The sieve example programs in testsource run, such as they are.

diff --git a/testsource/rs_sieve_bif.fs b/testsource/rs_sieve_bif.fs
index 532ca3d..ebcd53b 100644 (file)
--- a/testsource/rs_sieve_bif.fs
+++ b/testsource/rs_sieve_bif.fs
@@ -70,5 +70,7 @@ SHOWPRIMES
 
 COUNTPRIMES
 
-
+( 8192: 6 SECONDS TO FIND PRIMES )
+( 3 SECONDS TO COUNT )
+( XROAR NORMAL )
 

diff --git a/testsource/sievefig.bif6809 b/testsource/sievefig.bif6809
index cf02aea..3aafd2c 100644 (file)
--- a/testsource/sievefig.bif6809
+++ b/testsource/sievefig.bif6809
@@ -39,34 +39,33 @@ MAXSIEVE 1 - 2 /
 0 VARIABLE SIEVE 
 ( OLD FORTHS DON'T PROVIDE A ) 
 ( DEFAULT BEHAVIOR FOR CREATE )
-( GFORTH WILL LEAVE )
+( NEW FORTHS WILL LEAVE )
 ( THE ZERO THERE. )
 ( OLD FORTHS NEED )
 ( AN INITIAL VALUE. )
 
-   HERE SIEVE -
 ( OLD FORTHS DON'T PROVIDE )
 ( A CELL WIDTH. )
-   CONSTANT CELLWIDTH 
-( TO SHOW HOW IT CAN BE DONE. )
+  HERE SIEVE - DUP ( CELLWIDTH )
 
-CELLWIDTH MAXSIEVE SWAP - ALLOT 
 ( ALLOCATE THE REST )
 ( OF THE BYTE ARRAY. )
+  MAXSIEVE SWAP - ALLOT 
+
+( NOW DEFINE THE CONSTANT: )
+  CONSTANT CELLWIDTH 
 
 : NOT-PRIME! ( ADR N -- )
-+ 0 SWAP ! ;
++ 0 SWAP C! ;
 
 : IS-PRIME? ( ADR N -- F )
-+ @ ;
++ C@ ;
   -->
 
 
 : SIEVE-INIT ( ADR -- )
-0 OVER C!      
-( 0 IS NOT PRIME. )
-0 OVER 1+ C!   
-( 1 IS NOT PRIME. )
+DUP 0 NOT-PRIME!      
+DUP 1 NOT-PRIME!
 ( SET FLAGS TO TRUE )
 ( FOR 2 TO FINALPASS. )
 2+ MAXSIEVE 2- -1 FILL    
@@ -94,14 +93,15 @@ LOOP ;
 
 
 
+
+
 : COUNT-PRIMES ( ADR -- )
-." COUNT: " .
 0 SWAP
 MAXSIEVE 0 DO
    DUP I IS-PRIME? IF
       SWAP 1+ SWAP
    ENDIF
-LOOP DROP CR
+LOOP DROP
  ;
 
 
@@ -119,7 +119,7 @@ DROP ;
 : PRINT-PRIMES ( ADR -- )
 MAXSIEVE 0 DO
    DUP I IS-PRIME? 
-   IF . ENDIF
+   IF I . ENDIF
 LOOP 
 DROP CR ;
 -->
@@ -133,10 +133,15 @@ BIF   DEFINITIONS
 [ SIEVE-LOCAL ]
 SIEVE SIEVE-INIT
 SIEVE FIND-PRIMES
-SIEVE PRINT-PRIMES
-SIEVE COUNT-PRIMES ;
+SIEVE PRINT-PRIMES CR
+." COUNT: "
+SIEVE COUNT-PRIMES . CR ;
 
 
 SIEVEMAIN
 
 
+( 8192: 8 SECONDS TO FIND )
+( 3 TO COUNT )
+( XROAR, NORMAL CLOCK )
+

diff --git a/testsource/sievegforth.bif6809 b/testsource/sievegforth.bif6809
index aca59d7..cbb1f65 100644 (file)
--- a/testsource/sievegforth.bif6809
+++ b/testsource/sievegforth.bif6809
@@ -14,7 +14,7 @@
 ( SHALL RETAIN THIS COPYRIGHT )
 ( AND PERMISSION NOTICE. )
 
-256 CONSTANT MAXSIEVE
+256      CONSTANT MAXSIEVE
 MAXSIEVE 1- 2 / 
   CONSTANT FINALPASS
 
@@ -22,13 +22,13 @@ MAXSIEVE 1- 2 /
 ( ENOUGH DIGITS )
 ( TO DISPLAY MAXSIEVE )
 
-CREATE SIEVE MAXSIEVE ALLOT
-
- -->
-
-
+( BIF AND FIG HAVE NO DEFAULT )
+( BEHAVIOR FOR CREATE-D WORDS )
+0 VARIABLE SIEVE 
+  MAXSIEVE 2- ALLOT
 
 
+-->
 
 : SIEVEMAIN ( -- )
 0 SIEVE C!      
@@ -44,20 +44,20 @@ FINALPASS 2 DO
 ( CLEAR FLAGS AT MULTIPLES. )
    DUP I + C@ IF      
 ( DON'T BOTHER IF NOT PRIME. )
-      MAXSIEVE I DUP + ?DO    
+      MAXSIEVE I DUP + DO    
 ( START AT FIRST MULTIPLE )
 ( -- DOUBLE. )
          0 OVER I + C!      
 ( CLEAR AT THIS MULTIPLE. )
       J +LOOP           
 ( SIEVE STILL ON STACK. )
-   THEN
+   ENDIF
 LOOP  ( SIEVE STILL ON STACK. )
 MAXSIEVE 0 DO
    I DISPWIDTH .R ." : IS "
    DUP I + C@ 0= IF 
       ." NOT " 
-   THEN
+   ENDIF
    ." PRIME." CR
 LOOP DROP ;
  -->
@@ -65,4 +65,6 @@ LOOP DROP ;
 
 SIEVEMAIN
 
-
+( 8 SECONDS )
+( FROM CALL TO SIEVEMAIN )
+( ON XROAR. )

diff --git a/testsource/sieveplay.dsk b/testsource/sieveplay.dsk
index 2946bdc..c1d74f4 100644 (file)
--- a/testsource/sieveplay.dsk
+++ b/testsource/sieveplay.dsk
@@ -1 +1 @@
-0) Index to BIF HI-LEVEL disk   2) Title page, Copr. notice     3) MONITOR CALL TO DEBUG        4) ERROR MESSAGES               6) HIGH LEVEL TOOLS & UTILITIES 7) LIST, INDEX, TRIAD           8) HIGH LEVEL DISK & SCREEN     11) FORWARD REFERENCING         12) PERIPHERAL UTILITIES        13) SLIST                       15) DUMP DEFINITION BY NAME     16) ASSEMBLER                   32) DOUBLES IN ASSEMBLER                                        40) ERATOSTHENES FROM ROSETTA   44) MY FIG COMPATIBLE SIEVE     50 A GFORTH COMPATIBLE SIEVE    54 ROSETTA SIEVE FIXED?                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       BIF                      EDITOR, UTILITIES,           ASSEMBLER, AND EXAMPLES               VERSION 1.0                                                                                  COPYRIGHT    1989               JOEL MATTHEW REES                                           THESE ALGORITHMS ARE         EXPRESSED IN THREE LANGUAGES:   BIF, BIF ASSEMBLER FOR THE      MOTOROLA M6809 MICROPROCESSOR,  AND HEXADECIMAL MACHINE CODE FORTHE M6809.                                                         THE TEXT IS ORGANIZED FOR    EDITING ON A 32-COLUMN TERMINAL,SUCH AS IS FOUND ON A RADIO     SHACK COLOR COMPUTER 2.                                            THESE ALGORITHMS AND THEIR   TEXT ARE INTENDED FOR NO PURPOSEOTHER THAN EXPERIMENTATION, AND NO CLAIMS OR WARRANTIES ARE MADECONCERNING THEIR USEFULNESS IN  ANY PARTICULAR APPLICATION.                                     PUBLISHED 1989                     JOEL MATTHEW REES               SOUTH SALT LAKE CITY, UTAH                                   ( CALL TO MONITOR, IF SWI IS BREAKPOINT           JMR-88OCT?? )                                 CREATE MON HEX 3F C, 6EB1 ,       SMUDGE HERE 1- FENCE ! ;S                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     ( ERROR MESSAGES )              DATA STACK UNDERFLOW            DICTIONARY FULL                 ADDRESS RESOLUTION ERROR        HIDES DEFINITION IN             NULL VECTOR WRITTEN             DISC RANGE?                     DATA STACK OVERFLOW             DISC ERROR!                     CAN'T EXECUTE A NULL!           CONTROL STACK UNDERFLOW         CONTROL STACK OVERFLOW          ARRAY REFERENCE OUT OF BOUNDS   ARRAY DIMENSION NOT VALID       NO PROCEDURE TO ENTER                          ( WAS REGISTER )                                 COMPILATION ONLY, USE IN DEF    EXECUTION ONLY                  CONDITIONALS NOT PAIRED         DEFINITION INCOMPLETE           IN PROTECTED DICTIONARY         USE ONLY WHEN LOADING           OFF CURRENT EDITING SCREEN      DECLARE VOCABULARY              DEFINITION NOT IN VOCABULARY    IN FORWARD BLOCK                ALLOCATION LIST CORRUPTED: LOST CAN'T REDEFINE nul!             NOT FORWARD REFERENCE                         ( WAS IMMEDIATE )                                 ( MORE ERROR MESSAGES )         HAS INCORRECT ADDRESS MODE      HAS INCORRECT INDEX MODE        OPERAND NOT REGISTER            HAS ILLEGAL IMMEDIATE           PC OFFSET MUST BE ABSOLUTE      ACCUMULATOR OFFSET REQUIRED     ILLEGAL MEMORY INDIRECTION      ILLEGAL INDEX BASE              ILLEGAL TARGET SPECIFIED        CAN'T STACK ON SELF             DUPLICATE IN LIST               REGISTER NOT STACK              EMPTY REGISTER LIST             IMMEDIATE OPERAND REQUIRED      REQUIRES CONDITION                                              COMPILE-TIME STACK UNDERFLOW    COMPILE-TIME STACK OVERFLOW                                                                                                                                                                                                                                                                                                                                                                                                                                     ( UTILITIES DUMP QLIST QINDEX ) ( L/SCR ULIST      JMR-88NOV16)  BIF DEFINITIONS HEX             ( UTILITIES IS NOW IN KERNEL )  UTILITIES DEFINITIONS          : BYTE-DUMP -DUP IF                 0 DO DUP I + C@ 4 .R LOOP     ENDIF DROP ;  ( BASE > 6)      BIF DEFINITIONS                : DUMP -DUP IF OVER + SWAP          DO I 0 6 D.R I 4                  [ UTILITIES ] BYTE-DUMP         [ BIF ] 3A EMIT I 4 TYPE        CR ?TERMINAL 0< IF                KEY 0< IF LEAVE ENDIF         ENDIF 4 +LOOP ENDIF ;     : QLIST BLOCK [ EDITOR ] QDUMP    [ BIF ] 500 88 ! ( CENTER ) ; : QINDEX 1+ SWAP DO I QLIST         ." SCREEN=" I 4 /MOD .          3A EMIT . ."  BLOCK=" I .       KEY 0< IF LEAVE ENDIF         LOOP ;                         UTILITIES DEFINITIONS          : L/SCR B/BUF B/SCR C/L */ ;    : ULIST ( SCREEN N, FLAG BRK )    DUP SCR ! ." SCR # " . 0 ( F )  L/SCR 0 DO CR I 3 .R SPACE        I SCR @ .LINE                   ?TERMINAL 0< IF  ( BREAK? )       KEY 0< IF 1- LEAVE ENDIF      ENDIF LOOP CR ; -->         ( LIST INDEX TRIAD )                            ( JMR-88NOV16 )  BIF DEFINITIONS                : LIST ( WIDE OUTPUT ) DECIMAL    CR UTILITIES ULIST BIF DROP ;                                 : INDEX ( PRINT COMMENT LINES )   0C EMIT ( FORM FEED ) CR        1+ SWAP DO                        CR I 3 .R SPACE                 0 I .LINE                       C/L 49 < IF 1 I .LINE ENDIF     ?TERMINAL 0< IF                   KEY 0< IF LEAVE ENDIF         ENDIF                         LOOP ;                                                        : TRIAD ( LIST MULTIPLE ) >PRT    0C EMIT ( FORM FEED )           [ DECIMAL ] UTILITIES L/SCR     BIF 22 > IF 2 ELSE 3 ENDIF      >R R / R * DUP R> + SWAP        DO I UTILITIES ULIST BIF          0< IF LEAVE ENDIF               UTILITIES L/SCR BIF DUP         32 = SWAP 22 = OR NOT IF          CR CR ENDIF                 LOOP >VID ;    HEX                                                                                                                                         -->( HOME CLS QSAVE SAVE-BUFFERS    QCAN )         ( JMR-88DEC10 )  UTILITIES DEFINITIONS HEX      : HOME 400 88 ! ;               : MID 500 88 ! ;                 BIF DEFINITIONS                : CLS 400 200 60 FILL             UTILITIES HOME BIF ;           UTILITIES DEFINITIONS          : CAN-UP ( CANCEL UPDATE IN BUF)  DUP @ 7FFF AND OVER ! ;                                       : W-BUF ( WRITE BUF AT ADR )      DUP 2+ OVER @ 7FFF AND 0 R/W    CAN-UP ;                                                      : SAVE-BUF     ( IF UPDATED )     DUP @ 0< IF W-BUF ENDIF ;                                      BIF DEFINITIONS                : QSAVE PREV @ ( SAVE PREVIOUS )  UTILITIES SAVE-BUF BIF DROP ;                                                                 : SAVE-BUFFERS PREV @             BEGIN UTILITIES SAVE-BUF BIF      +BUF NOT UNTIL DROP ;                                       : QCAN PREV @ ( CAN UP OF PREV )  UTILITIES CAN-UP BIF DROP ;   -->                                                             ( CANCEL-UPDATES RE-QUICK .PREV  .BUFFERS QPREV   JMR-88DEC10 ) : CANCEL-UPDATES PREV @           BEGIN UTILITIES CAN-UP BIF        +BUF NOT UNTIL DROP ;                                       : RE-QUICK ( QUICK OLD PREVIOUS)  PREV @ DUP @ 7FFF AND 0 ROT !   [ EDITOR ] QUICK BIF ;                                        UTILITIES DEFINITIONS           : .BUF ( QLIST BUFFER, . BLOCK )  DUP @ DUP 7FFF AND DUP QLIST    MID ." BLOCK=" .                0< IF ."  UPDATED" ENDIF CR ;                                  BIF DEFINITIONS                : .BUFFERS PREV @ ( .BUF, PAUSE)  BEGIN UTILITIES .BUF BIF          +BUF DROP KEY 0< ( BREAK? )   UNTIL DROP ;                                                  : .PREV PREV @ UTILITIES .BUF     BIF DROP ;                                                    : EDIT DUP UTILITIES MID BIF      ." BLOCK=" . CR [ EDITOR ]      QUICK BIF PREV @ @              0< IF ." UPDATED" ENDIF ;                                     : QPREV PREV @ @ 7FFF AND         EDIT ;                     -->( QOPY COPY QBACK BACK-UP )                     ( JMR-88DEC11 ) : QOPY SWAP BLOCK SWAP BLOCK      B/BUF 2/ MOVE UPDATE ;                                        : COPY 2* 2*      ( SCREEN  )     SWAP 2* 2* DUP 4 + SWAP         DO I OVER QOPY 1+ LOOP DROP ; : QBACK  1+ SWAP DO I QLIST       I BLOCK DUP [ EDITOR ] QDUMP    ." BLOCK " I . ." TO "          0 DRIVE-OFFSET @ I + DUP .      KEY 59 = IF 0 R/W ( YES? )        ELSE DROP DROP                ENDIF LOOP ;                                                  : EEDIT ( ERASE AND EDIT BLOCK )  DUP BLOCK 2- UTILITIES .BUF 2+  MID BIF ." BLOCK=" OVER .       ."  CLEAR?" CR                  KEY 59 = IF ( YES? )              B/BUF BLANKS UPDATE           ELSE DROP ( DON'T CLEAR )       ENDIF EDIT ;             -->                                                                                                                                                                                                                                                                  ( RES-ERROR FORWARD :RESOLVE     :RESOLVE ;RES    JMR-16MAY89 )  UTILITIES DEFINITIONS HEX      : RES-ERROR ( ADR RESOLUTION )    3 ERROR ;                                                      BIF DEFINITIONS UTILITIES      : FORWARD ( REFERENCE HEADER )    CREATE 7E C, ( JMP EXTENDED )   IP, [ ' RES-ERROR CFA , ]       ( INIT TO RES-ERROR ) SMUDGE    FOREWARD @ 0= IF ( EARLIEST? )    LATEST FOREWARD ! ENDIF ;    ASSEMBLER DEFINITIONS           UTILITIES                      : :RESOLVE ( :ASM FORWARD REFS )  ?EXEC !CSP [COMPILE] ' DUP      CFA DUP 1+ SWAP C@ 7E - ( JMP)  OVER @ ' RES-ERROR CFA -        OR 1D ?ERROR ( HEADER? )        HERE SWAP ! ( LINK IT )         FOREWARD @ = IF ( END FORWD? )    0 FOREWARD ! ENDIF ;         IMMEDIATE                                                       BIF DEFINITIONS ASSEMBLER      : :RES ( RESOLVE : FORWARDS )     [COMPILE] :RESOLVE [ BIF ]      ( ASSEMBLE JMP <XCOL, COMPILE)  IP, [ LATEST CFA @ , ]  ] ;   : ;RES [COMPILE] ; SMUDGE ;      IMMEDIATE                      ( PL PTEST )                                    ( JMR-89AUG25 )  BIF DEFINITIONS DECIMAL        : PL 79 0 DO I 33 + EMIT LOOP ;                                 : PT    ( PL UNTIL KEY PRESS )    BEGIN PL ?TERMINAL UNTIL ;                                    : PTEST >PRT PT >VID ;           ;S                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             ( SLIST )                                       ( JMR-16OCT90 )  ROOT @ UTILITIES                                               : SLIST ( LIST SCREENS TO PRT )  >PRT 1+ SWAP DO                  I ULIST 0<  IF LEAVE ENDIF     LOOP >VID ;                     ROOT ! ;S                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      ( DISK ACCESS WORDS JMR-900228)                                 HEX                             : CM! FF48 C! ; : ST@ FF48 C@ ; : TR! FF49 C! ; : TR@ FF49 C@ ; : SE! FF4A C! ; : SE@ FF4A C@ ; : DA! FF4B C! ; : DA@ FF4B C@ ; : DR FF40 ! ;                   : DWAIT BEGIN ST@ DUP 1 AND       WHILE DROP REPEAT ;           : 1I DR 40 CM! DWAIT 0 DR . ;   : 1O DR 60 CM! DWAIT 0 DR . ;   : IN 0 DO DUP 1I LOOP DROP ;    : OUT 0 DO DUP 1O LOOP DROP ;   : ?ADR 0 FF42 C! 0 FF46 C!        28 OR DR ( MOTOR ON, DBL DNS)   C4 FF4C C! DWAIT . FF44 @ DROP  0 FF42 C! 0 FF46 C!             FF4E ? FF4E ? FF4E ? ;  ;S                                                                                                                                                                                                                                                                                                                                                                                                                                    ( NAMES )                                       ( JMR-89MAY16 )  BIF DEFINITIONS HEX            : NAME ( CFA TO NAME )            2+ NFA ID. ;                                                                                                                  : NAMES ( DUMP BY NAME )          -DUP IF 2* OVER + SWAP ( 0? )     DO I 0 6 D.R ( ADR )              I @ DUP 0 5 D.R ( NUMERIC)      3A EMIT NAME CR                 ?TERMINAL 0< IF                   KEY 0< IF LEAVE ENDIF       ENDIF 2 +LOOP ENDIF ; ;S                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    ( ^asm-util DREG REGISTERS #     DPREG DPR SETDP  JMR-88DEC19 )  ASSEMBLER DEFINITIONS HEX      VOCABULARY ^asm-util ( HIDDEN )  ^asm-util DEFINITIONS          : DREG ( REGISTER OPERANDS )      0FF0F AND 5245 DCONSTANT ;     ASSEMBLER DEFINITIONS           ^asm-util ( INDEX IN HI BYTE ) 8B00 DREG D     8608 DREG A     8509 DREG B     8C05 DREG PC    4003 DREG U     6004 DREG S     2002 DREG Y     0001 DREG X     EF0A DREG CC    EF0B DREG DP     ( ALL OPERANDS ARE DBL INTS )                                  ( ABSOLUTE IS 0 OR -1 HI WORD ) ( DIRECT IS ABSOLUTE IN DPAGE ) 494D CONSTANT # ( HI WORD )                                      ^asm-util DEFINITIONS           ( ASSEMBLY TIME DIRECT PAGE )  42 USER DPREG ( EMULATOR )       ( INIT DPREG ) UTILITIES DP@    ASSEMBLER ^asm-util DPREG !                                     ASSEMBLER DEFINITIONS           ( ACCESS DPREG )               : DPR [ ^asm-util ] DPREG         BIF @ ;                       : SETDP 0FF00 AND [ ^asm-util ]   DPREG BIF ! ; -->             ( OFF, ABS, V, PCOFF PCR, )                      ( JMR-89JAN2 )  ^asm-util DEFINITIONS          : OFF, ( SET IX b0, COMPILE 2 )   OVER DUP 80 < SWAP -81 > AND    IF C, C, ( SHORT )              ELSE 1 OR C, , ( LONG )         ENDIF ;                                                       : OP, ( COMPILE BYTE OR WORD )    DUP 0FF00 AND                   IF , ELSE C, ENDIF ;                                          : ABS, >R ( COMPILE ABS ADR OP )  OVER 0FF00 AND DPR =            IF R> DROP OP, C, ( DIR PAGE)   ELSE R> OR OP, ,   ( EXT )      ENDIF ;                                                       : PCOFF  ( ABSOLUTE TO PC REL )   HERE + 1+ - ( CALC OFFSET )     DUP 7F > OVER -80 < OR          IF 1- 0 ( WORD OFF )            ELSE -1 ( BYTE OFF ) ENDIF ;                                  : ?ABS ( TRUE IF ABSOLUTE )       DUP NOT 0= = ; ( USE T/F VAL)                                 : PCR, ( COMPILE A PC REL INDEX)  >R ?ABS NOT 25 ?ERROR           1 PCOFF IF R> C, C, ( BYTE )    ELSE R> 1 OR C, , ENDIF ; --> ( AUTO MASK, REG, IXOFF, EI, )                   ( JMR-89JAN2 )  ASSEMBLER DEFINITIONS          4155.0082 DCONSTANT -) ( AUTO ) 4155.0081 DCONSTANT )++ ( REG ) 4155.0080 DCONSTANT )+ ( MODE ) 4155.0083 DCONSTANT --) ( CONS)  ^asm-util DEFINITIONS                                          : MASK, OR C, ; ( FOR POSTBYTE)                                 : REG, ( REG OFF TO POST-BYTE )   SWAP DUP D DROP =                 OVER A DROP = OR OVER           B DROP = OR NOT 26 ?ERROR     SWAB OR C, ;                   ( REG, USES DUAL CODED REGS )                                  : IXOFF, ( REGISTER + CONSTANT )  OVER IF OVER ( NON-ZERO? )        DUP 0F > SWAP -10 < OR          OVER 10 AND OR ( []? )          IF 88 OR OFF, ( EXTERNAL )      ELSE ( OFFSET IN POST-BYTE)       SWAP 1F AND OR C,             ENDIF                         ELSE 84 OR C, DROP ( 0 OFF )    ENDIF ;                                                       : EI,  ( EXTENDED INDIRECT )      SWAP ?ABS NOT 27 ?ERROR         C, , ; -->                    ( IX, , INDIRECT )                               ( JMR-89JAN4 ) : IX, ( COMPILE AN INDEX MODE )   DUP 9F = IF EI,                 ELSE DUP 8F AND 8C = IF PCR,      ELSE SWAP DUP 4155 =              IF DROP MASK, ( AUTO )          ELSE DUP 5245 =                   IF DROP REG,                    ELSE ?ABS NOT 22 ?ERROR           IXOFF, ENDIF            ENDIF ENDIF ENDIF ;                                            ASSEMBLER DEFINITIONS          : , ( CONVERT TO INDEX )          5245 = ( REGISTER? )            OVER 00FF AND DUP 0 > SWAP      6 < AND ( X Y U S PC ? )        AND NOT 28 ?ERROR               SWAB 4958 ;                                                   : ) ( CONVERT TO INDIRECT )       DUP 5245 = ( REGISTER? )        IF ( ASSEMBLER ) ,              ELSE DUP [ ^asm-util ] ?ABS       [ ASSEMBLER ] IF 4958.009F      ELSE ( INDEX? )                   DUP 4958 = NOT 27 ?ERROR    ENDIF ENDIF ( SET BIT 4 )       SWAP 10 OR SWAP ;       -->                                                                   ( ACCM UNARY REG )                               ( JMR-89JAN5 )  ^asm-util DEFINITIONS HEX      : ACCM ( ENCODE ACCUMULATOR )     SWAP DUP 0FE AND ( A OR B? )    8 = NOT 29 ?ERROR               1 AND ( MASK B IN? )            IF OR ELSE DROP ENDIF ;                                       : UNARY ( OP-CODE COMPILER )      <BUILDS 0F AND C, ( OP-CODE )   DOES> C@ ( OP-CODE )            OVER 5245 = ( REGISTER? )       IF DUP 0E = 29 ?ERROR ( JMP?)     40 OR ROT 10 ACCM C, DROP     ELSE OVER 4958 = ( INDEX? )       IF 60 OR C, DROP IX,            ELSE SWAP ?ABS NOT 21 ?ERROR      70 ( EXT BITS ) ABS,        ENDIF ENDIF ;                                                 : REG ( ENCODE TARGET REG )       DUP C@ 8D = IF C@ 1 ( JSR )     ELSE SWAP 5245 - 29 ?ERROR        OVER DUP A DROP =               SWAP B DROP = OR                IF C@ SWAP 40 ACCM 0 ( BYTE)    ELSE SWAP 00FF AND ( REG? )       OVER 1+ C@ ( CT? ) OVER         > NOT 29 ?ERROR ( RANGE )       2* + 2+ @ -1 ( WORD REG )   ENDIF ENDIF ; -->             ( #, BINARY REG-REG )                           ( JMR-89JAN12 ) : #, ( COMPILE AN IMMEDIATE )     SWAP DUP 0F AND 5 - ( BIT OK)   OVER 5 AND 5 = ( ST OR JSR? )   AND 24 ?ERROR    OP,            IF BIF , [ ^asm-util ] ( WORD)  ELSE C, ENDIF ;      ( BYTE )                                 : BINARY ( OP-CODE COMPILER )     <BUILDS 8F AND C, ( A/B OP )    05 AND DUP C, -DUP IF ( OP CT)    0 DO 11CF AND BIF , ( DXYUS)      [ ^asm-util ] LOOP ENDIF    DOES> REG ROT ( SOURCE )        DUP 4958 = IF ( INDEX ? )         DROP DROP 20 OR OP, IX,       ELSE DUP 494D = ( IMMEDIATE? )    IF DROP #,                      ELSE ?ABS NOT 21 ?ERROR           DROP 10 OR 20 ABS,          ENDIF ENDIF ;                                                                                 : REG-REG ( OP-CODE COMPILER )    <BUILDS C, ( OP-CODE ) DOES>    C@ C, ( OP-CODE )               5245 = ROT 5245 = AND           NOT 23 ?ERROR ( 2 REGS? )       0F AND SWAP SWAN 0F0 AND        OR C, ; -->                                                   ( REG-BITS PACK MOVEM )                         ( JMR-89JAN12 ) 0 0B 1 1ARRAY REG-BITS ( PACK )  0 REG-BITS ( INITIALIZE )       06 OVER C! 1+ 10 OVER C! 1+     20 OVER C! 1+ 40 OVER C! 1+     40 OVER C! 1+ 80 OVER C! 1+     -1 OVER ! 2+ ( UNDEFINED )      02 OVER C! 1+ 04 OVER C! 1+     01 OVER C! 1+ 08 SWAP C!        ( STABILIZE PACK: UNDEF=ALL )                                  : PACK >R 0 ( PSH/PUL LIST )      BEGIN OVER 5245 = WHILE           SWAP DROP SWAP ( REG )          DUP R = 2A ?ERROR ( SELF? )     0FF AND REG-BITS C@ ( BIT )     OVER OVER AND 2B ?ERROR         OR REPEAT ( ^ IS DUPLICATE?)  R> DROP ;                                                     : MOVEM ( OP-CODE COMPILER )      <BUILDS 0FD AND C, DOES> ( OP)  C@ >R ( OP ) 5245 = OVER        1+ 0FE AND 4 = AND ( S OR U?)   NOT 2C ?ERROR                   R> OVER U DROP = ( SELECT S/U)  IF 2 OR ENDIF C,                PACK DUP 0= 2D ?ERROR           C, ; -->                                                                                      ( BR DCOND CC-IMM IMPLY )                       ( JMR-89JAN13 )  ASSEMBLER DEFINITIONS          : BR ( COMPILE CONDITIONAL BR )   434F - 2F ?ERROR ( CONDITION?)  [ ^asm-util ] SWAP ( ADR? )     ?ABS NOT 21 ?ERROR              SWAP 1 PCOFF IF ( SHORT )         SWAP DUP 0<                     IF 0FF AND ( BSR )              ELSE 0F AND 20 OR ENDIF         C, C, ( BOTH BYTES )          ELSE SWAP DUP 01000 AND           IF SWAB 017 AND ( BSR/BRA )     ELSE 0F AND 1020 OR               SWAP 1- SWAP ENDIF            OP, BIF , ENDIF ; ASSEMBLER  ^asm-util DEFINITIONS          : DCOND ( CONDITIONAL OPERANDS)   434F DCONSTANT ;                                              : CC-IMM ( OP-CODE COMPILER )     <BUILDS C, ( OP-CODE ) DOES>    C@ C, ( OP-CODE )               494D - 2E ?ERROR ( IMMEDIATE?)  C, ;                                                          : IMPLY    ( OP-CODE COMPILER )   <BUILDS BIF , ( OP-CODE )       DOES> @ OP, ; -->                                                                             ( MNEMONICS )                                   ( JMR-89JAN13 )  ASSEMBLER DEFINITIONS           ^asm-util                       10CE 0CE 108E 8E 0CC 5 86      BINARY LD                        10CF 0CF 108F 8F 0CD 5 87      BINARY ST                        118C 1183 108C 8C 1083 5 81    BINARY CMP                      35 MOVEM PUL    34 MOVEM PSH    46 UNARY ROR    49 UNARY ROL    39 IMPLY RTS    3B IMPLY RTI    0 82 BINARY SBC 978D DCOND SR   1F REG-REG TFR  4D UNARY TST    83 1 80 BINARY SUB              103F IMPLY SWI2 113F IMPLY SWI3 3F IMPLY SWI    13 IMPLY SYNC   0 84 BINARY AND 0 89 BINARY ADC 48 UNARY ASL    47 UNARY ASR    0C3 1 8B BINARY ADD             3A IMPLY ABX    5 DCOND CS      43 UNARY COM    4F UNARY CLR    1600 DCOND AL   0 85 BINARY BIT 4A UNARY DEC    19 IMPLY DAA    2 DCOND HI      0B DCOND MI     7 DCOND EQ      0C DCOND GE     1E REG-REG EXG  4C UNARY INC    0 8D BINARY JSR 4E UNARY JMP    0 88 BINARY EOR 0E DCOND GT     4 DCOND HS      12 IMPLY NOP    3 DCOND LS      0A DCOND PL --> ( MORE MNEMONICS )                              ( JMR-89JAN13 ) 44 UNARY LSR    48 UNARY LSL    0D DCOND LT     6 DCOND NE      3D IMPLY MUL    40 UNARY NEG    0 8A BINARY OR  1A CC-IMM ORCC  1 DCOND NV      1D IMPLY SEX    1C CC-IMM ANDCC 3C CC-IMM CWAI  8 DCOND VC      9 DCOND VS      4 DCOND CCLR ( LO LE FOLLOW )                                    ^asm-util DEFINITIONS          1 4 1 1ARRAY EA-IX ( TRANSLATE)  1 EA-IX ( INITIALIZE )          0 OVER C! 1+    1 OVER C! 1+    3 OVER C! 1+    2 SWAP C!                                       ASSEMBLER DEFINITIONS          : LEA ( OP-CODE ASSEMBLER )       5245 - 23 ?ERROR ( REGISTER?)   0F BIF AND [ ^asm-util ]        EA-IX C@  30 BIF OR C,          4958 - 21 ?ERROR ( INDEX? )     [ ^asm-util ] IX, ;                                           0F DCOND LE     5 DCOND LO -->                                                                                                                                                                                                  ( [CD]  & ! ^ NEXT )                            ( JMR-89JAN17 )  ASSEMBLER DEFINITIONS BIF HEX  : [CD]   ( CFA OF DEF )           -IFIND DROP DUP 0= 0 ?ERROR     CFA 0 [COMPILE] DLITERAL ;     IMMEDIATE                                                      CREATE &  [CD] AND JMP SMUDGE   CREATE !  [CD]  OR JMP SMUDGE   CREATE ^  [CD] XOR JMP SMUDGE                                    ASSEMBLER                      : NEXT )++ Y ) JMP ; -->                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        ( INVERTCC LIF IF )                              ( JMR-89FEB3 )  ^asm-util DEFINITIONS  HEX                                     CREATE INVERTCC ( CONDITIONS )    0. U , X LD 434F # X CMP        HERE DUP 2+ 0 NE BR ( CC? )     2. U , D LD ( BSR? )            HERE DUP 2+ 0 MI BR             A CLR 1 # B EOR ( TOGGLE CC )   HERE 4 + 0 NE BR ( ALWAYS? )    AL DROP SWAB # A LD             2. U , D ST   NEXT ( FILL BR)   1+ HERE OVER 1+ - SWAP C!       1+ HERE OVER 1+ - SWAP C!       2F # D LD D U PSH ( TO ERROR)   [CD] ERROR JMP SMUDGE                                          ASSEMBLER DEFINITIONS                                          : LIF ( MARK AND ASM LONG BR )    [ ^asm-util ] INVERTCC          [ ASSEMBLER ] >R >R             HERE 4146 ( MARK )              [ UTILITIES ] [CD] RES-ERROR    [ ASSEMBLER ] R> R> BR ;                                      : IF ( MARK AND ASM SHORT BR )    [ ^asm-util ] INVERTCC          [ ASSEMBLER ] >R >R             HERE 4146 ( MARK )              OVER 2+ 0 R> R> BR ; -->      ( FILL-IN )                                      ( JMR-89FEB7 )  ^asm-util DEFINITIONS                                          CREATE FILL-IN ( BR OFFSETS )     UTILITIES DP@ 0 X LD DP DP@ @    - ASSEMBLER 0 X , D LD         0. U , D SUB  D U PSH ( OFFS)   2. U , X LD  0. X , D LD ( BR)  16 # A CMP ( ALWAYS? )          HERE DUP 2+ 0 EQ BR             0FE # A AND  0F0 # B AND        1020 # D CMP ( LONG? )          HERE DUP 2+ 0 EQ BR             ( SHORT BRANCH )                0F0 # A AND  20 # A CMP ( BR?)  UTILITIES [CD] RES-ERROR        ASSEMBLER NE BR                 0. U , D LD  7E # D ADD A TST   UTILITIES [CD] RES-ERROR        ASSEMBLER NE BR ( TOO FAR? )    80 # B SUB                      1. X , B ST ( OFFSET )          HERE 4. U , U LEA NEXT          ROT 1+ HERE OVER 1+ - SWAP C!   0. U , D LD ( LONG BR ALWAYS)   3 # D SUB  1. X , D ST          DUP 0 AL BR SWAP                1+ HERE OVER 1+ - SWAP C!       0. U , D LD ( LONG BR COND )    4 # D SUB  2. X , D ST          0 AL BR SMUDGE -->            ( ELSE LELSE ENDIF )                             ( JMR-89FEB6 )  ASSEMBLER DEFINITIONS HEX       ^asm-util                                                      : ELSE ( SHORT BRANCH, RESOLVE)   4146 ?PAIRS                     >R NV IF R> FILL-IN ;                                         : LELSE ( LONG BRANCH, RESOLVE)   4146 ?PAIRS                     >R NV LIF R> FILL-IN ;                                        : ENDIF 4146 ?PAIRS FILL-IN ;                                   : BEGIN HERE 4142 ;                                             : UNTIL ( COND BR TO BEGIN )      >R >R 4142 ?PAIRS 0             R> R> INVERTCC BR ;                                           : WHILE ( COND BR PAST REPEAT )   ROT 4142 ?PAIRS                 IF DROP 4157 ;                                                : REPEAT ( LOOP, RESOLVE WHILE)   4157 ?PAIRS SWAP 0 AL BR        FILL-IN ;                                                     : LWHILE ( LONG WHILE )           ROT 4142 ?PAIRS                 LIF DROP 4157 ;  -->          ( :ASM ;ASM )                                   ( JMR-89MAR28 )  ASSEMBLER DEFINITIONS HEX                                      : :ASM CREATE !CSP ;                                            : ;ASM ?CSP SMUDGE ;                                            : I-CODE ( SHIFT TO HI-LEVEL )    [ ' :ASM CFA @ ] LITERAL        [ BIF ] , ( ASMBL JMP <XCOL )   DROOT @ ROOT !  ] ; ( COMPILE) ASSEMBLER                                                                                                                      : MACHINE ( SHIFT TO LO-LEVEL )   COMPILE (MACHINE) ( IN DEF )    [COMPILE] [ ( NOW INTERPRET )   [COMPILE] ASSEMBLER ;          IMMEDIATE  ;S                                                                                                                  ÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿ( D! D@ )                                       ( JMR-89FEB16 )  BIF DEFINITIONS ASSEMBLER                                      :ASM D! ( STORE DBL ) X U PUL     D U PUL  0. X , D ST            D U PUL  2. X , D ST            NEXT ;ASM                                                     :ASM D@ ( FETCH DBL ) X U PUL     0. X , D LD    2. X , X LD      D X U PSH   NEXT  ;ASM                                        :ASM DOVER ( DOUBLE OVER DOUBLE)  4. U , D LD   6. U , X LD       D X U PSH     NEXT  ;ASM                                      :ASM DSWAP ( SWAP DOUBLES )       4. U , D LD    0. U , X LD      4. U , X ST    0. U , D ST      6. U , D LD    2. U , X LD      6. U , X ST    2. U , D ST      NEXT ;ASM                      ;S                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             ( FROM ROSETTA CODE )                                           ( https://rosettacode.org/wiki/Sieve_of_Eratosthenes#Forth )                                    : PRIME? ( N -- ? )               HERE + C@ 0= ;                                                : COMPOSITE! ( N -- )             HERE + 1 SWAP C! ;                                            : 2DUP OVER OVER ;                                              : SHOWPRIMES                      ." PRIMES: "                    2 DO I PRIME?                     IF I . ENDIF                  LOOP ;                                                        : COUNTPRIMES                     ." PRIME COUNT: "               0 SWAP                          2 DO I PRIME?                     IF 1+ ENDIF                   LOOP                            . ;                                                           -->                                                                                                                                                                                                                             : SIEVE ( N -- )                  HERE OVER ERASE                 2                               BEGIN                             2DUP DUP * >                  WHILE                             DUP PRIME? IF                     2DUP DUP * DO                     I COMPOSITE!                  DUP +LOOP                     ENDIF                           1+                            REPEAT                          DROP                            ;                             -->                             ( SIEVE DEFINED. )                                              ( EDIT SIEVE COUNT TO DO MORE )                                 ( SIEVE IS KEPT IN THE )        ( FREE RAM AREA, )              ( WITH THE EXPECT-ED )          ( CONSEQUENCES. )                                               ( MAY MISBEHAVE )               ( IF RUN TWICE IN A ROW )       ( WITHOUT REPEAL-ING BACK. )                                                                    ( OKAY UP TO AT LEAST 8192. )   100     SIEVE                                                   DUP                                                             SHOWPRIMES                                                      COUNTPRIMES                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     ( ARCHETYPICAL IMPLEMENTATION ) ( OF THE SIEVE OF ERATOSTHENES )( IN FORTH -- FIG, BIF-C --  )  ( USING A LITTLE MORE )         ( OF THE FORTH AND BIF IDIOMS. )( COPYRIGHT 2015, 2019,         ( JOEL MATTHEW REES )           ( BY JOEL MATTHEW REES, )       ( AMAGASAKI, JAPAN, 2015 )      ( ALL RIGHTS RESERVED. )        ( PERMISSION GRANTED BY THE )   ( AUTHOR TO USE THIS CODE )     ( FOR ANY PURPOSE,  )           ( ON CONDITION THAT )           ( SUBSTANTIAL USE  )            ( SHALL RETAIN THIS COPYRIGHT ) ( AND PERMISSION NOTICE. )                                      ( PERL-ESQUE, TOO. )                                            VOCABULARY SIEVE-LOCAL          ( MAKE A LOCAL SYMBOL TABLE. )  SIEVE-LOCAL DEFINITIONS         ( SWITCH TO THE )               ( LOCAL VOCABULARY. )                                                                           256 CONSTANT MAXSIEVE           MAXSIEVE 1 - 2 /                   CONSTANT FINALPASS            -->                                                                                            5 CONSTANT DISPWIDTH            ( ENOUGH DIGITS )               ( TO DISPLAY MAXSIEVE )                                                                         0 VARIABLE SIEVE                ( OLD FORTHS DON'T PROVIDE A )  ( DEFAULT BEHAVIOR FOR CREATE ) ( GFORTH WILL LEAVE )           ( THE ZERO THERE. )             ( OLD FORTHS NEED )             ( AN INITIAL VALUE. )                                              HERE SIEVE -                 ( OLD FORTHS DON'T PROVIDE )    ( A CELL WIDTH. )                  CONSTANT CELLWIDTH           ( TO SHOW HOW IT CAN BE DONE. )                                 CELLWIDTH MAXSIEVE SWAP - ALLOT ( ALLOCATE THE REST )           ( OF THE BYTE ARRAY. )                                          : NOT-PRIME! ( ADR N -- )       + 0 SWAP ! ;                                                    : IS-PRIME? ( ADR N -- F )      + @ ;                             -->                                                                                           : SIEVE-INIT ( ADR -- )         0 OVER C!                       ( 0 IS NOT PRIME. )             0 OVER 1+ C!                    ( 1 IS NOT PRIME. )             ( SET FLAGS TO TRUE )           ( FOR 2 TO FINALPASS. )         2+ MAXSIEVE 2- -1 FILL           ;                                                                                              : PRIME-PASS ( ADR PRIME -- )   (  DOUBLE IS FIRST MULTIPLE )   MAXSIEVE OVER DUP + DO             OVER I NOT-PRIME!               DUP +LOOP ( NEXT MULTIPLE )  DROP ;                                                          : FIND-PRIMES ( ADR -- )        FINALPASS 2 DO                     DUP I IS-PRIME? IF                 I PRIME-PASS                 ENDIF                        LOOP ;                                                          -->                                                                                                                                                                                                                             : COUNT-PRIMES ( ADR -- )       ." COUNT: " .                   0 SWAP                          MAXSIEVE 0 DO                      DUP I IS-PRIME? IF                 SWAP 1+ SWAP                 ENDIF                        LOOP DROP CR                     ;                                                                                              : PRINT-ALL ( ADR -- )          MAXSIEVE 0 DO                      I DISPWIDTH .R ." : IS "        DUP I IS-PRIME? 0= IF              ." NOT "                     ENDIF                           ." PRIME." CR                LOOP                            DROP ;                                                                                          : PRINT-PRIMES ( ADR -- )       MAXSIEVE 0 DO                      DUP I IS-PRIME?                 IF . ENDIF                   LOOP                            DROP CR ;                       -->                                                                                                                                                             BIF   DEFINITIONS                                               : SIEVEMAIN ( -- )              [ SIEVE-LOCAL ]                 SIEVE SIEVE-INIT                SIEVE FIND-PRIMES               SIEVE PRINT-PRIMES              SIEVE COUNT-PRIMES ;                                                                            SIEVEMAIN                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       ( ARCHETYPICAL IMPLEMENTATION ) ( OF THE SIEVE OF ERATOSTHENES )( IN FORTH -- BIF-6809 -- )     ( COPYRIGHT 2015, 2019, )       ( JOEL MATTHEW REES )           ( WRITTEN BY JOEL MATHEW REES, )( AMAGASAKI, JAPAN, 2015, 2019 )( ALL RIGHTS RESERVED. )        ( PERMISSION GRANTED BY THE )   ( AUTHOR TO USE THIS CODE )     ( FOR ANY PURPOSE,  )           ( ON CONDITION THAT )           ( SUBSTANTIAL USE  )            ( SHALL RETAIN THIS COPYRIGHT ) ( AND PERMISSION NOTICE. )                                      256 CONSTANT MAXSIEVE           MAXSIEVE 1- 2 /                   CONSTANT FINALPASS                                            5 CONSTANT DISPWIDTH            ( ENOUGH DIGITS )               ( TO DISPLAY MAXSIEVE )                                         CREATE SIEVE MAXSIEVE ALLOT                                      -->                                                                                                                                                                                            : SIEVEMAIN ( -- )              0 SIEVE C!                      ( 0 IS NOT PRIME. )             0 SIEVE 1+ C!                   ( 1 IS NOT PRIME. )             SIEVE MAXSIEVE 2 DO             ( SET FLAGS TO TRUE )           ( FOR 2 TO FINALPASS. )            -1 OVER I + C! LOOP          ( SIEVE PTR STILL ON STACK. )   FINALPASS 2 DO                  ( CLEAR FLAGS AT MULTIPLES. )      DUP I + C@ IF                ( DON'T BOTHER IF NOT PRIME. )        MAXSIEVE I DUP + ?DO      ( START AT FIRST MULTIPLE )     ( -- DOUBLE. )                           0 OVER I + C!          ( CLEAR AT THIS MULTIPLE. )           J +LOOP                   ( SIEVE STILL ON STACK. )          THEN                         LOOP  ( SIEVE STILL ON STACK. ) MAXSIEVE 0 DO                      I DISPWIDTH .R ." : IS "        DUP I + C@ 0= IF                   ." NOT "                     THEN                            ." PRIME." CR                LOOP DROP ;                      -->                                                                                            SIEVEMAIN                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       ( FROM ROSETTA CODE )           ( MODIFIED TO GIVE ROOM )       ( FOR OTHER WORDS THAT )        ( USE THE HERE REGION )         ( WITHOUT ALLOCATION. )                                         ( https://rosettacode.org/wiki/Sieve_of_Eratosthenes#Forth )                                    ( USE BOTTOM TO MOVE )          ( OUT OF EXPECT BUFFER )        : BOTTOM HERE 256 + ;                                           : PRIME? ( N -- ? )               BOTTOM + C@ 0= ;                                              : COMPOSITE! ( N -- )             BOTTOM + 1 SWAP C! ;                                          : 2DUP OVER OVER ;                                              : SHOWPRIMES                      ." PRIMES: "                    2 DO I PRIME?                     IF I . ENDIF                  LOOP ;                                                        -->                                                                                                                                                                                             : COUNTPRIMES                     ." PRIME COUNT: "               0 SWAP                          2 DO I PRIME?                     IF 1+ ENDIF                   LOOP                            . ;                                                           : SIEVE ( N -- )                  BOTTOM OVER ERASE               2                               BEGIN                             2DUP DUP * >                  WHILE                             DUP PRIME? IF                     2DUP DUP * DO                     I COMPOSITE!                  DUP +LOOP                     ENDIF                           1+                            REPEAT                          DROP                            ;                                                             -->                                                                                                                                                                                             ( SIEVE DEFINED. )                                              ( EDIT SIEVE COUNT TO DO MORE )                                 ( SIEVE IS KEPT IN THE )        ( FREE RAM AREA, )              ( MOVED DOWN BY BOTTOM )        ( TO AVOID EXPECT-ED CONFLICT )                                 ( BUT IT DOESN'T WORK. )                                        ( SHOULD BE OKAY BEYOND 8192 )  100     SIEVE                                                   DUP                                                             SHOWPRIMES                                                      COUNTPRIMES                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             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+0) Index to BIF HI-LEVEL disk   2) Title page, Copr. notice     3) MONITOR CALL TO DEBUG        4) ERROR MESSAGES               6) HIGH LEVEL TOOLS & UTILITIES 7) LIST, INDEX, TRIAD           8) HIGH LEVEL DISK & SCREEN     11) FORWARD REFERENCING         12) PERIPHERAL UTILITIES        13) SLIST                       15) DUMP DEFINITION BY NAME     16) ASSEMBLER                   32) DOUBLES IN ASSEMBLER                                        40) ERATOSTHENES FROM ROSETTA   44) MY FIG COMPATIBLE SIEVE     50 A GFORTH COMPATIBLE SIEVE    54 ROSETTA SIEVE FIXED?                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       BIF                      EDITOR, UTILITIES,           ASSEMBLER, AND EXAMPLES               VERSION 1.0                                                                                  COPYRIGHT    1989               JOEL MATTHEW REES                                           THESE ALGORITHMS ARE         EXPRESSED IN THREE LANGUAGES:   BIF, BIF ASSEMBLER FOR THE      MOTOROLA M6809 MICROPROCESSOR,  AND HEXADECIMAL MACHINE CODE FORTHE M6809.                                                         THE TEXT IS ORGANIZED FOR    EDITING ON A 32-COLUMN TERMINAL,SUCH AS IS FOUND ON A RADIO     SHACK COLOR COMPUTER 2.                                            THESE ALGORITHMS AND THEIR   TEXT ARE INTENDED FOR NO PURPOSEOTHER THAN EXPERIMENTATION, AND NO CLAIMS OR WARRANTIES ARE MADECONCERNING THEIR USEFULNESS IN  ANY PARTICULAR APPLICATION.                                     PUBLISHED 1989                     JOEL MATTHEW REES               SOUTH SALT LAKE CITY, UTAH                                   ( CALL TO MONITOR, IF SWI IS BREAKPOINT           JMR-88OCT?? )                                 CREATE MON HEX 3F C, 6EB1 ,       SMUDGE HERE 1- FENCE ! ;S                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     ( ERROR MESSAGES )              DATA STACK UNDERFLOW            DICTIONARY FULL                 ADDRESS RESOLUTION ERROR        HIDES DEFINITION IN             NULL VECTOR WRITTEN             DISC RANGE?                     DATA STACK OVERFLOW             DISC ERROR!                     CAN'T EXECUTE A NULL!           CONTROL STACK UNDERFLOW         CONTROL STACK OVERFLOW          ARRAY REFERENCE OUT OF BOUNDS   ARRAY DIMENSION NOT VALID       NO PROCEDURE TO ENTER                          ( WAS REGISTER )                                 COMPILATION ONLY, USE IN DEF    EXECUTION ONLY                  CONDITIONALS NOT PAIRED         DEFINITION INCOMPLETE           IN PROTECTED DICTIONARY         USE ONLY WHEN LOADING           OFF CURRENT EDITING SCREEN      DECLARE VOCABULARY              DEFINITION NOT IN VOCABULARY    IN FORWARD BLOCK                ALLOCATION LIST CORRUPTED: LOST CAN'T REDEFINE nul!             NOT FORWARD REFERENCE                         ( WAS IMMEDIATE )                                 ( MORE ERROR MESSAGES )         HAS INCORRECT ADDRESS MODE      HAS INCORRECT INDEX MODE        OPERAND NOT REGISTER            HAS ILLEGAL IMMEDIATE           PC OFFSET MUST BE ABSOLUTE      ACCUMULATOR OFFSET REQUIRED     ILLEGAL MEMORY INDIRECTION      ILLEGAL INDEX BASE              ILLEGAL TARGET SPECIFIED        CAN'T STACK ON SELF             DUPLICATE IN LIST               REGISTER NOT STACK              EMPTY REGISTER LIST             IMMEDIATE OPERAND REQUIRED      REQUIRES CONDITION                                              COMPILE-TIME STACK UNDERFLOW    COMPILE-TIME STACK OVERFLOW                                                                                                                                                                                                                                                                                                                                                                                                                                     ( UTILITIES DUMP QLIST QINDEX ) ( L/SCR ULIST      JMR-88NOV16)  BIF DEFINITIONS HEX             ( UTILITIES IS NOW IN KERNEL )  UTILITIES DEFINITIONS          : BYTE-DUMP -DUP IF                 0 DO DUP I + C@ 4 .R LOOP     ENDIF DROP ;  ( BASE > 6)      BIF DEFINITIONS                : DUMP -DUP IF OVER + SWAP          DO I 0 6 D.R I 4                  [ UTILITIES ] BYTE-DUMP         [ BIF ] 3A EMIT I 4 TYPE        CR ?TERMINAL 0< IF                KEY 0< IF LEAVE ENDIF         ENDIF 4 +LOOP ENDIF ;     : QLIST BLOCK [ EDITOR ] QDUMP    [ BIF ] 500 88 ! ( CENTER ) ; : QINDEX 1+ SWAP DO I QLIST         ." SCREEN=" I 4 /MOD .          3A EMIT . ."  BLOCK=" I .       KEY 0< IF LEAVE ENDIF         LOOP ;                         UTILITIES DEFINITIONS          : L/SCR B/BUF B/SCR C/L */ ;    : ULIST ( SCREEN N, FLAG BRK )    DUP SCR ! ." SCR # " . 0 ( F )  L/SCR 0 DO CR I 3 .R SPACE        I SCR @ .LINE                   ?TERMINAL 0< IF  ( BREAK? )       KEY 0< IF 1- LEAVE ENDIF      ENDIF LOOP CR ; -->         ( LIST INDEX TRIAD )                            ( JMR-88NOV16 )  BIF DEFINITIONS                : LIST ( WIDE OUTPUT ) DECIMAL    CR UTILITIES ULIST BIF DROP ;                                 : INDEX ( PRINT COMMENT LINES )   0C EMIT ( FORM FEED ) CR        1+ SWAP DO                        CR I 3 .R SPACE                 0 I .LINE                       C/L 49 < IF 1 I .LINE ENDIF     ?TERMINAL 0< IF                   KEY 0< IF LEAVE ENDIF         ENDIF                         LOOP ;                                                        : TRIAD ( LIST MULTIPLE ) >PRT    0C EMIT ( FORM FEED )           [ DECIMAL ] UTILITIES L/SCR     BIF 22 > IF 2 ELSE 3 ENDIF      >R R / R * DUP R> + SWAP        DO I UTILITIES ULIST BIF          0< IF LEAVE ENDIF               UTILITIES L/SCR BIF DUP         32 = SWAP 22 = OR NOT IF          CR CR ENDIF                 LOOP >VID ;    HEX                                                                                                                                         -->( HOME CLS QSAVE SAVE-BUFFERS    QCAN )         ( JMR-88DEC10 )  UTILITIES DEFINITIONS HEX      : HOME 400 88 ! ;               : MID 500 88 ! ;                 BIF DEFINITIONS                : CLS 400 200 60 FILL             UTILITIES HOME BIF ;           UTILITIES DEFINITIONS          : CAN-UP ( CANCEL UPDATE IN BUF)  DUP @ 7FFF AND OVER ! ;                                       : W-BUF ( WRITE BUF AT ADR )      DUP 2+ OVER @ 7FFF AND 0 R/W    CAN-UP ;                                                      : SAVE-BUF     ( IF UPDATED )     DUP @ 0< IF W-BUF ENDIF ;                                      BIF DEFINITIONS                : QSAVE PREV @ ( SAVE PREVIOUS )  UTILITIES SAVE-BUF BIF DROP ;                                                                 : SAVE-BUFFERS PREV @             BEGIN UTILITIES SAVE-BUF BIF      +BUF NOT UNTIL DROP ;                                       : QCAN PREV @ ( CAN UP OF PREV )  UTILITIES CAN-UP BIF DROP ;   -->                                                             ( CANCEL-UPDATES RE-QUICK .PREV  .BUFFERS QPREV   JMR-88DEC10 ) : CANCEL-UPDATES PREV @           BEGIN UTILITIES CAN-UP BIF        +BUF NOT UNTIL DROP ;                                       : RE-QUICK ( QUICK OLD PREVIOUS)  PREV @ DUP @ 7FFF AND 0 ROT !   [ EDITOR ] QUICK BIF ;                                        UTILITIES DEFINITIONS           : .BUF ( QLIST BUFFER, . BLOCK )  DUP @ DUP 7FFF AND DUP QLIST    MID ." BLOCK=" .                0< IF ."  UPDATED" ENDIF CR ;                                  BIF DEFINITIONS                : .BUFFERS PREV @ ( .BUF, PAUSE)  BEGIN UTILITIES .BUF BIF          +BUF DROP KEY 0< ( BREAK? )   UNTIL DROP ;                                                  : .PREV PREV @ UTILITIES .BUF     BIF DROP ;                                                    : EDIT DUP UTILITIES MID BIF      ." BLOCK=" . CR [ EDITOR ]      QUICK BIF PREV @ @              0< IF ." UPDATED" ENDIF ;                                     : QPREV PREV @ @ 7FFF AND         EDIT ;                     -->( QOPY COPY QBACK BACK-UP )                     ( JMR-88DEC11 ) : QOPY SWAP BLOCK SWAP BLOCK      B/BUF 2/ MOVE UPDATE ;                                        : COPY 2* 2*      ( SCREEN  )     SWAP 2* 2* DUP 4 + SWAP         DO I OVER QOPY 1+ LOOP DROP ; : QBACK  1+ SWAP DO I QLIST       I BLOCK DUP [ EDITOR ] QDUMP    ." BLOCK " I . ." TO "          0 DRIVE-OFFSET @ I + DUP .      KEY 59 = IF 0 R/W ( YES? )        ELSE DROP DROP                ENDIF LOOP ;                                                  : EEDIT ( ERASE AND EDIT BLOCK )  DUP BLOCK 2- UTILITIES .BUF 2+  MID BIF ." BLOCK=" OVER .       ."  CLEAR?" CR                  KEY 59 = IF ( YES? )              B/BUF BLANKS UPDATE           ELSE DROP ( DON'T CLEAR )       ENDIF EDIT ;             -->                                                                                                                                                                                                                                                                  ( RES-ERROR FORWARD :RESOLVE     :RESOLVE ;RES    JMR-16MAY89 )  UTILITIES DEFINITIONS HEX      : RES-ERROR ( ADR RESOLUTION )    3 ERROR ;                                                      BIF DEFINITIONS UTILITIES      : FORWARD ( REFERENCE HEADER )    CREATE 7E C, ( JMP EXTENDED )   IP, [ ' RES-ERROR CFA , ]       ( INIT TO RES-ERROR ) SMUDGE    FOREWARD @ 0= IF ( EARLIEST? )    LATEST FOREWARD ! ENDIF ;    ASSEMBLER DEFINITIONS           UTILITIES                      : :RESOLVE ( :ASM FORWARD REFS )  ?EXEC !CSP [COMPILE] ' DUP      CFA DUP 1+ SWAP C@ 7E - ( JMP)  OVER @ ' RES-ERROR CFA -        OR 1D ?ERROR ( HEADER? )        HERE SWAP ! ( LINK IT )         FOREWARD @ = IF ( END FORWD? )    0 FOREWARD ! ENDIF ;         IMMEDIATE                                                       BIF DEFINITIONS ASSEMBLER      : :RES ( RESOLVE : FORWARDS )     [COMPILE] :RESOLVE [ BIF ]      ( ASSEMBLE JMP <XCOL, COMPILE)  IP, [ LATEST CFA @ , ]  ] ;   : ;RES [COMPILE] ; SMUDGE ;      IMMEDIATE                      ( PL PTEST )                                    ( JMR-89AUG25 )  BIF DEFINITIONS DECIMAL        : PL 79 0 DO I 33 + EMIT LOOP ;                                 : PT    ( PL UNTIL KEY PRESS )    BEGIN PL ?TERMINAL UNTIL ;                                    : PTEST >PRT PT >VID ;           ;S                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             ( SLIST )                                       ( JMR-16OCT90 )  ROOT @ UTILITIES                                               : SLIST ( LIST SCREENS TO PRT )  >PRT 1+ SWAP DO                  I ULIST 0<  IF LEAVE ENDIF     LOOP >VID ;                     ROOT ! ;S                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      ( DISK ACCESS WORDS JMR-900228)                                 HEX                             : CM! FF48 C! ; : ST@ FF48 C@ ; : TR! FF49 C! ; : TR@ FF49 C@ ; : SE! FF4A C! ; : SE@ FF4A C@ ; : DA! FF4B C! ; : DA@ FF4B C@ ; : DR FF40 ! ;                   : DWAIT BEGIN ST@ DUP 1 AND       WHILE DROP REPEAT ;           : 1I DR 40 CM! DWAIT 0 DR . ;   : 1O DR 60 CM! DWAIT 0 DR . ;   : IN 0 DO DUP 1I LOOP DROP ;    : OUT 0 DO DUP 1O LOOP DROP ;   : ?ADR 0 FF42 C! 0 FF46 C!        28 OR DR ( MOTOR ON, DBL DNS)   C4 FF4C C! DWAIT . FF44 @ DROP  0 FF42 C! 0 FF46 C!             FF4E ? FF4E ? FF4E ? ;  ;S                                                                                                                                                                                                                                                                                                                                                                                                                                    ( NAMES )                                       ( JMR-89MAY16 )  BIF DEFINITIONS HEX            : NAME ( CFA TO NAME )            2+ NFA ID. ;                                                                                                                  : NAMES ( DUMP BY NAME )          -DUP IF 2* OVER + SWAP ( 0? )     DO I 0 6 D.R ( ADR )              I @ DUP 0 5 D.R ( NUMERIC)      3A EMIT NAME CR                 ?TERMINAL 0< IF                   KEY 0< IF LEAVE ENDIF       ENDIF 2 +LOOP ENDIF ; ;S                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    ( ^asm-util DREG REGISTERS #     DPREG DPR SETDP  JMR-88DEC19 )  ASSEMBLER DEFINITIONS HEX      VOCABULARY ^asm-util ( HIDDEN )  ^asm-util DEFINITIONS          : DREG ( REGISTER OPERANDS )      0FF0F AND 5245 DCONSTANT ;     ASSEMBLER DEFINITIONS           ^asm-util ( INDEX IN HI BYTE ) 8B00 DREG D     8608 DREG A     8509 DREG B     8C05 DREG PC    4003 DREG U     6004 DREG S     2002 DREG Y     0001 DREG X     EF0A DREG CC    EF0B DREG DP     ( ALL OPERANDS ARE DBL INTS )                                  ( ABSOLUTE IS 0 OR -1 HI WORD ) ( DIRECT IS ABSOLUTE IN DPAGE ) 494D CONSTANT # ( HI WORD )                                      ^asm-util DEFINITIONS           ( ASSEMBLY TIME DIRECT PAGE )  42 USER DPREG ( EMULATOR )       ( INIT DPREG ) UTILITIES DP@    ASSEMBLER ^asm-util DPREG !                                     ASSEMBLER DEFINITIONS           ( ACCESS DPREG )               : DPR [ ^asm-util ] DPREG         BIF @ ;                       : SETDP 0FF00 AND [ ^asm-util ]   DPREG BIF ! ; -->             ( OFF, ABS, V, PCOFF PCR, )                      ( JMR-89JAN2 )  ^asm-util DEFINITIONS          : OFF, ( SET IX b0, COMPILE 2 )   OVER DUP 80 < SWAP -81 > AND    IF C, C, ( SHORT )              ELSE 1 OR C, , ( LONG )         ENDIF ;                                                       : OP, ( COMPILE BYTE OR WORD )    DUP 0FF00 AND                   IF , ELSE C, ENDIF ;                                          : ABS, >R ( COMPILE ABS ADR OP )  OVER 0FF00 AND DPR =            IF R> DROP OP, C, ( DIR PAGE)   ELSE R> OR OP, ,   ( EXT )      ENDIF ;                                                       : PCOFF  ( ABSOLUTE TO PC REL )   HERE + 1+ - ( CALC OFFSET )     DUP 7F > OVER -80 < OR          IF 1- 0 ( WORD OFF )            ELSE -1 ( BYTE OFF ) ENDIF ;                                  : ?ABS ( TRUE IF ABSOLUTE )       DUP NOT 0= = ; ( USE T/F VAL)                                 : PCR, ( COMPILE A PC REL INDEX)  >R ?ABS NOT 25 ?ERROR           1 PCOFF IF R> C, C, ( BYTE )    ELSE R> 1 OR C, , ENDIF ; --> ( AUTO MASK, REG, IXOFF, EI, )                   ( JMR-89JAN2 )  ASSEMBLER DEFINITIONS          4155.0082 DCONSTANT -) ( AUTO ) 4155.0081 DCONSTANT )++ ( REG ) 4155.0080 DCONSTANT )+ ( MODE ) 4155.0083 DCONSTANT --) ( CONS)  ^asm-util DEFINITIONS                                          : MASK, OR C, ; ( FOR POSTBYTE)                                 : REG, ( REG OFF TO POST-BYTE )   SWAP DUP D DROP =                 OVER A DROP = OR OVER           B DROP = OR NOT 26 ?ERROR     SWAB OR C, ;                   ( REG, USES DUAL CODED REGS )                                  : IXOFF, ( REGISTER + CONSTANT )  OVER IF OVER ( NON-ZERO? )        DUP 0F > SWAP -10 < OR          OVER 10 AND OR ( []? )          IF 88 OR OFF, ( EXTERNAL )      ELSE ( OFFSET IN POST-BYTE)       SWAP 1F AND OR C,             ENDIF                         ELSE 84 OR C, DROP ( 0 OFF )    ENDIF ;                                                       : EI,  ( EXTENDED INDIRECT )      SWAP ?ABS NOT 27 ?ERROR         C, , ; -->                    ( IX, , INDIRECT )                               ( JMR-89JAN4 ) : IX, ( COMPILE AN INDEX MODE )   DUP 9F = IF EI,                 ELSE DUP 8F AND 8C = IF PCR,      ELSE SWAP DUP 4155 =              IF DROP MASK, ( AUTO )          ELSE DUP 5245 =                   IF DROP REG,                    ELSE ?ABS NOT 22 ?ERROR           IXOFF, ENDIF            ENDIF ENDIF ENDIF ;                                            ASSEMBLER DEFINITIONS          : , ( CONVERT TO INDEX )          5245 = ( REGISTER? )            OVER 00FF AND DUP 0 > SWAP      6 < AND ( X Y U S PC ? )        AND NOT 28 ?ERROR               SWAB 4958 ;                                                   : ) ( CONVERT TO INDIRECT )       DUP 5245 = ( REGISTER? )        IF ( ASSEMBLER ) ,              ELSE DUP [ ^asm-util ] ?ABS       [ ASSEMBLER ] IF 4958.009F      ELSE ( INDEX? )                   DUP 4958 = NOT 27 ?ERROR    ENDIF ENDIF ( SET BIT 4 )       SWAP 10 OR SWAP ;       -->                                                                   ( ACCM UNARY REG )                               ( JMR-89JAN5 )  ^asm-util DEFINITIONS HEX      : ACCM ( ENCODE ACCUMULATOR )     SWAP DUP 0FE AND ( A OR B? )    8 = NOT 29 ?ERROR               1 AND ( MASK B IN? )            IF OR ELSE DROP ENDIF ;                                       : UNARY ( OP-CODE COMPILER )      <BUILDS 0F AND C, ( OP-CODE )   DOES> C@ ( OP-CODE )            OVER 5245 = ( REGISTER? )       IF DUP 0E = 29 ?ERROR ( JMP?)     40 OR ROT 10 ACCM C, DROP     ELSE OVER 4958 = ( INDEX? )       IF 60 OR C, DROP IX,            ELSE SWAP ?ABS NOT 21 ?ERROR      70 ( EXT BITS ) ABS,        ENDIF ENDIF ;                                                 : REG ( ENCODE TARGET REG )       DUP C@ 8D = IF C@ 1 ( JSR )     ELSE SWAP 5245 - 29 ?ERROR        OVER DUP A DROP =               SWAP B DROP = OR                IF C@ SWAP 40 ACCM 0 ( BYTE)    ELSE SWAP 00FF AND ( REG? )       OVER 1+ C@ ( CT? ) OVER         > NOT 29 ?ERROR ( RANGE )       2* + 2+ @ -1 ( WORD REG )   ENDIF ENDIF ; -->             ( #, BINARY REG-REG )                           ( JMR-89JAN12 ) : #, ( COMPILE AN IMMEDIATE )     SWAP DUP 0F AND 5 - ( BIT OK)   OVER 5 AND 5 = ( ST OR JSR? )   AND 24 ?ERROR    OP,            IF BIF , [ ^asm-util ] ( WORD)  ELSE C, ENDIF ;      ( BYTE )                                 : BINARY ( OP-CODE COMPILER )     <BUILDS 8F AND C, ( A/B OP )    05 AND DUP C, -DUP IF ( OP CT)    0 DO 11CF AND BIF , ( DXYUS)      [ ^asm-util ] LOOP ENDIF    DOES> REG ROT ( SOURCE )        DUP 4958 = IF ( INDEX ? )         DROP DROP 20 OR OP, IX,       ELSE DUP 494D = ( IMMEDIATE? )    IF DROP #,                      ELSE ?ABS NOT 21 ?ERROR           DROP 10 OR 20 ABS,          ENDIF ENDIF ;                                                                                 : REG-REG ( OP-CODE COMPILER )    <BUILDS C, ( OP-CODE ) DOES>    C@ C, ( OP-CODE )               5245 = ROT 5245 = AND           NOT 23 ?ERROR ( 2 REGS? )       0F AND SWAP SWAN 0F0 AND        OR C, ; -->                                                   ( REG-BITS PACK MOVEM )                         ( JMR-89JAN12 ) 0 0B 1 1ARRAY REG-BITS ( PACK )  0 REG-BITS ( INITIALIZE )       06 OVER C! 1+ 10 OVER C! 1+     20 OVER C! 1+ 40 OVER C! 1+     40 OVER C! 1+ 80 OVER C! 1+     -1 OVER ! 2+ ( UNDEFINED )      02 OVER C! 1+ 04 OVER C! 1+     01 OVER C! 1+ 08 SWAP C!        ( STABILIZE PACK: UNDEF=ALL )                                  : PACK >R 0 ( PSH/PUL LIST )      BEGIN OVER 5245 = WHILE           SWAP DROP SWAP ( REG )          DUP R = 2A ?ERROR ( SELF? )     0FF AND REG-BITS C@ ( BIT )     OVER OVER AND 2B ?ERROR         OR REPEAT ( ^ IS DUPLICATE?)  R> DROP ;                                                     : MOVEM ( OP-CODE COMPILER )      <BUILDS 0FD AND C, DOES> ( OP)  C@ >R ( OP ) 5245 = OVER        1+ 0FE AND 4 = AND ( S OR U?)   NOT 2C ?ERROR                   R> OVER U DROP = ( SELECT S/U)  IF 2 OR ENDIF C,                PACK DUP 0= 2D ?ERROR           C, ; -->                                                                                      ( BR DCOND CC-IMM IMPLY )                       ( JMR-89JAN13 )  ASSEMBLER DEFINITIONS          : BR ( COMPILE CONDITIONAL BR )   434F - 2F ?ERROR ( CONDITION?)  [ ^asm-util ] SWAP ( ADR? )     ?ABS NOT 21 ?ERROR              SWAP 1 PCOFF IF ( SHORT )         SWAP DUP 0<                     IF 0FF AND ( BSR )              ELSE 0F AND 20 OR ENDIF         C, C, ( BOTH BYTES )          ELSE SWAP DUP 01000 AND           IF SWAB 017 AND ( BSR/BRA )     ELSE 0F AND 1020 OR               SWAP 1- SWAP ENDIF            OP, BIF , ENDIF ; ASSEMBLER  ^asm-util DEFINITIONS          : DCOND ( CONDITIONAL OPERANDS)   434F DCONSTANT ;                                              : CC-IMM ( OP-CODE COMPILER )     <BUILDS C, ( OP-CODE ) DOES>    C@ C, ( OP-CODE )               494D - 2E ?ERROR ( IMMEDIATE?)  C, ;                                                          : IMPLY    ( OP-CODE COMPILER )   <BUILDS BIF , ( OP-CODE )       DOES> @ OP, ; -->                                                                             ( MNEMONICS )                                   ( JMR-89JAN13 )  ASSEMBLER DEFINITIONS           ^asm-util                       10CE 0CE 108E 8E 0CC 5 86      BINARY LD                        10CF 0CF 108F 8F 0CD 5 87      BINARY ST                        118C 1183 108C 8C 1083 5 81    BINARY CMP                      35 MOVEM PUL    34 MOVEM PSH    46 UNARY ROR    49 UNARY ROL    39 IMPLY RTS    3B IMPLY RTI    0 82 BINARY SBC 978D DCOND SR   1F REG-REG TFR  4D UNARY TST    83 1 80 BINARY SUB              103F IMPLY SWI2 113F IMPLY SWI3 3F IMPLY SWI    13 IMPLY SYNC   0 84 BINARY AND 0 89 BINARY ADC 48 UNARY ASL    47 UNARY ASR    0C3 1 8B BINARY ADD             3A IMPLY ABX    5 DCOND CS      43 UNARY COM    4F UNARY CLR    1600 DCOND AL   0 85 BINARY BIT 4A UNARY DEC    19 IMPLY DAA    2 DCOND HI      0B DCOND MI     7 DCOND EQ      0C DCOND GE     1E REG-REG EXG  4C UNARY INC    0 8D BINARY JSR 4E UNARY JMP    0 88 BINARY EOR 0E DCOND GT     4 DCOND HS      12 IMPLY NOP    3 DCOND LS      0A DCOND PL --> ( MORE MNEMONICS )                              ( JMR-89JAN13 ) 44 UNARY LSR    48 UNARY LSL    0D DCOND LT     6 DCOND NE      3D IMPLY MUL    40 UNARY NEG    0 8A BINARY OR  1A CC-IMM ORCC  1 DCOND NV      1D IMPLY SEX    1C CC-IMM ANDCC 3C CC-IMM CWAI  8 DCOND VC      9 DCOND VS      4 DCOND CCLR ( LO LE FOLLOW )                                    ^asm-util DEFINITIONS          1 4 1 1ARRAY EA-IX ( TRANSLATE)  1 EA-IX ( INITIALIZE )          0 OVER C! 1+    1 OVER C! 1+    3 OVER C! 1+    2 SWAP C!                                       ASSEMBLER DEFINITIONS          : LEA ( OP-CODE ASSEMBLER )       5245 - 23 ?ERROR ( REGISTER?)   0F BIF AND [ ^asm-util ]        EA-IX C@  30 BIF OR C,          4958 - 21 ?ERROR ( INDEX? )     [ ^asm-util ] IX, ;                                           0F DCOND LE     5 DCOND LO -->                                                                                                                                                                                                  ( [CD]  & ! ^ NEXT )                            ( JMR-89JAN17 )  ASSEMBLER DEFINITIONS BIF HEX  : [CD]   ( CFA OF DEF )           -IFIND DROP DUP 0= 0 ?ERROR     CFA 0 [COMPILE] DLITERAL ;     IMMEDIATE                                                      CREATE &  [CD] AND JMP SMUDGE   CREATE !  [CD]  OR JMP SMUDGE   CREATE ^  [CD] XOR JMP SMUDGE                                    ASSEMBLER                      : NEXT )++ Y ) JMP ; -->                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        ( INVERTCC LIF IF )                              ( JMR-89FEB3 )  ^asm-util DEFINITIONS  HEX                                     CREATE INVERTCC ( CONDITIONS )    0. U , X LD 434F # X CMP        HERE DUP 2+ 0 NE BR ( CC? )     2. U , D LD ( BSR? )            HERE DUP 2+ 0 MI BR             A CLR 1 # B EOR ( TOGGLE CC )   HERE 4 + 0 NE BR ( ALWAYS? )    AL DROP SWAB # A LD             2. U , D ST   NEXT ( FILL BR)   1+ HERE OVER 1+ - SWAP C!       1+ HERE OVER 1+ - SWAP C!       2F # D LD D U PSH ( TO ERROR)   [CD] ERROR JMP SMUDGE                                          ASSEMBLER DEFINITIONS                                          : LIF ( MARK AND ASM LONG BR )    [ ^asm-util ] INVERTCC          [ ASSEMBLER ] >R >R             HERE 4146 ( MARK )              [ UTILITIES ] [CD] RES-ERROR    [ ASSEMBLER ] R> R> BR ;                                      : IF ( MARK AND ASM SHORT BR )    [ ^asm-util ] INVERTCC          [ ASSEMBLER ] >R >R             HERE 4146 ( MARK )              OVER 2+ 0 R> R> BR ; -->      ( FILL-IN )                                      ( JMR-89FEB7 )  ^asm-util DEFINITIONS                                          CREATE FILL-IN ( BR OFFSETS )     UTILITIES DP@ 0 X LD DP DP@ @    - ASSEMBLER 0 X , D LD         0. U , D SUB  D U PSH ( OFFS)   2. U , X LD  0. X , D LD ( BR)  16 # A CMP ( ALWAYS? )          HERE DUP 2+ 0 EQ BR             0FE # A AND  0F0 # B AND        1020 # D CMP ( LONG? )          HERE DUP 2+ 0 EQ BR             ( SHORT BRANCH )                0F0 # A AND  20 # A CMP ( BR?)  UTILITIES [CD] RES-ERROR        ASSEMBLER NE BR                 0. U , D LD  7E # D ADD A TST   UTILITIES [CD] RES-ERROR        ASSEMBLER NE BR ( TOO FAR? )    80 # B SUB                      1. X , B ST ( OFFSET )          HERE 4. U , U LEA NEXT          ROT 1+ HERE OVER 1+ - SWAP C!   0. U , D LD ( LONG BR ALWAYS)   3 # D SUB  1. X , D ST          DUP 0 AL BR SWAP                1+ HERE OVER 1+ - SWAP C!       0. U , D LD ( LONG BR COND )    4 # D SUB  2. X , D ST          0 AL BR SMUDGE -->            ( ELSE LELSE ENDIF )                             ( JMR-89FEB6 )  ASSEMBLER DEFINITIONS HEX       ^asm-util                                                      : ELSE ( SHORT BRANCH, RESOLVE)   4146 ?PAIRS                     >R NV IF R> FILL-IN ;                                         : LELSE ( LONG BRANCH, RESOLVE)   4146 ?PAIRS                     >R NV LIF R> FILL-IN ;                                        : ENDIF 4146 ?PAIRS FILL-IN ;                                   : BEGIN HERE 4142 ;                                             : UNTIL ( COND BR TO BEGIN )      >R >R 4142 ?PAIRS 0             R> R> INVERTCC BR ;                                           : WHILE ( COND BR PAST REPEAT )   ROT 4142 ?PAIRS                 IF DROP 4157 ;                                                : REPEAT ( LOOP, RESOLVE WHILE)   4157 ?PAIRS SWAP 0 AL BR        FILL-IN ;                                                     : LWHILE ( LONG WHILE )           ROT 4142 ?PAIRS                 LIF DROP 4157 ;  -->          ( :ASM ;ASM )                                   ( JMR-89MAR28 )  ASSEMBLER DEFINITIONS HEX                                      : :ASM CREATE !CSP ;                                            : ;ASM ?CSP SMUDGE ;                                            : I-CODE ( SHIFT TO HI-LEVEL )    [ ' :ASM CFA @ ] LITERAL        [ BIF ] , ( ASMBL JMP <XCOL )   DROOT @ ROOT !  ] ; ( COMPILE) ASSEMBLER                                                                                                                      : MACHINE ( SHIFT TO LO-LEVEL )   COMPILE (MACHINE) ( IN DEF )    [COMPILE] [ ( NOW INTERPRET )   [COMPILE] ASSEMBLER ;          IMMEDIATE  ;S                                                                                                                  ÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿ( D! D@ )                                       ( JMR-89FEB16 )  BIF DEFINITIONS ASSEMBLER                                      :ASM D! ( STORE DBL ) X U PUL     D U PUL  0. X , D ST            D U PUL  2. X , D ST            NEXT ;ASM                                                     :ASM D@ ( FETCH DBL ) X U PUL     0. X , D LD    2. X , X LD      D X U PSH   NEXT  ;ASM                                        :ASM DOVER ( DOUBLE OVER DOUBLE)  4. U , D LD   6. U , X LD       D X U PSH     NEXT  ;ASM                                      :ASM DSWAP ( SWAP DOUBLES )       4. U , D LD    0. U , X LD      4. U , X ST    0. U , D ST      6. U , D LD    2. U , X LD      6. U , X ST    2. U , D ST      NEXT ;ASM                      ;S                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             ( FROM ROSETTA CODE )                                           ( https://rosettacode.org/wiki/Sieve_of_Eratosthenes#Forth )                                    : PRIME? ( N -- ? )               HERE + C@ 0= ;                                                : COMPOSITE! ( N -- )             HERE + 1 SWAP C! ;                                            : 2DUP OVER OVER ;                                              : SHOWPRIMES                      ." PRIMES: "                    2 DO I PRIME?                     IF I . ENDIF                  LOOP ;                                                        : COUNTPRIMES                     ." PRIME COUNT: "               0 SWAP                          2 DO I PRIME?                     IF 1+ ENDIF                   LOOP                            . ;                                                           -->                                                                                                                                                                                                                             : SIEVE ( N -- )                  HERE OVER ERASE                 2                               BEGIN                             2DUP DUP * >                  WHILE                             DUP PRIME? IF                     2DUP DUP * DO                     I COMPOSITE!                  DUP +LOOP                     ENDIF                           1+                            REPEAT                          DROP                            ;                             -->                             ( SIEVE DEFINED. )                                              ( EDIT SIEVE COUNT TO DO MORE )                                 ( SIEVE IS KEPT IN THE )        ( FREE RAM AREA, )              ( WITH THE EXPECT-ED )          ( CONSEQUENCES. )                                               ( MAY MISBEHAVE )               ( IF RUN TWICE IN A ROW )       ( WITHOUT REPEAL-ING BACK. )                                                                    ( OKAY UP TO AT LEAST 8192. )   100     SIEVE                                                   DUP                                                             SHOWPRIMES                                                      COUNTPRIMES                                                     ( 8192: 6 SECONDS TO FIND PRIMES )                              ( 3 SECONDS TO COUNT )          ( XROAR NORMAL )                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                ( ARCHETYPICAL IMPLEMENTATION ) ( OF THE SIEVE OF ERATOSTHENES )( IN FORTH -- BIF, FIG --  )    ( USING A LITTLE MORE )         ( OF THE FORTH AND BIF IDIOMS. )( COPYRIGHT 2015, 2019,         ( JOEL MATTHEW REES )           ( BY JOEL MATTHEW REES, )       ( AMAGASAKI, JAPAN, 2015 )      ( ALL RIGHTS RESERVED. )        ( PERMISSION GRANTED BY THE )   ( AUTHOR TO USE THIS CODE )     ( FOR ANY PURPOSE,  )           ( ON CONDITION THAT )           ( SUBSTANTIAL USE  )            ( SHALL RETAIN THIS COPYRIGHT ) ( AND PERMISSION NOTICE. )                                      ( PERL-ESQUE, TOO. )                                            VOCABULARY SIEVE-LOCAL          ( MAKE A LOCAL SYMBOL TABLE. )  SIEVE-LOCAL DEFINITIONS         ( SWITCH TO THE )               ( LOCAL VOCABULARY. )                                                                           256 CONSTANT MAXSIEVE           MAXSIEVE 1 - 2 /                   CONSTANT FINALPASS            -->                                                                                            5 CONSTANT DISPWIDTH            ( ENOUGH DIGITS )               ( TO DISPLAY MAXSIEVE )                                                                         0 VARIABLE SIEVE                ( OLD FORTHS DON'T PROVIDE A )  ( DEFAULT BEHAVIOR FOR CREATE ) ( NEW FORTHS WILL LEAVE )       ( THE ZERO THERE. )             ( OLD FORTHS NEED )             ( AN INITIAL VALUE. )                                           ( OLD FORTHS DON'T PROVIDE )    ( A CELL WIDTH. )                 HERE SIEVE - DUP ( CELLWIDTH )                                ( ALLOCATE THE REST )           ( OF THE BYTE ARRAY. )            MAXSIEVE SWAP - ALLOT                                         ( NOW DEFINE THE CONSTANT: )      CONSTANT CELLWIDTH                                            : NOT-PRIME! ( ADR N -- )       + 0 SWAP C! ;                                                   : IS-PRIME? ( ADR N -- F )      + C@ ;                            -->                                                                                           : SIEVE-INIT ( ADR -- )         DUP 0 NOT-PRIME!                DUP 1 NOT-PRIME!                ( SET FLAGS TO TRUE )           ( FOR 2 TO FINALPASS. )         2+ MAXSIEVE 2- -1 FILL           ;                                                                                              : PRIME-PASS ( ADR PRIME -- )   (  DOUBLE IS FIRST MULTIPLE )   MAXSIEVE OVER DUP + DO             OVER I NOT-PRIME!               DUP +LOOP ( NEXT MULTIPLE )  DROP ;                                                          : FIND-PRIMES ( ADR -- )        FINALPASS 2 DO                     DUP I IS-PRIME? IF                 I PRIME-PASS                 ENDIF                        LOOP ;                                                          -->                                                                                                                                                                                                                                                                                             : COUNT-PRIMES ( ADR -- )       0 SWAP                          MAXSIEVE 0 DO                      DUP I IS-PRIME? IF                 SWAP 1+ SWAP                 ENDIF                        LOOP DROP                        ;                                                                                              : PRINT-ALL ( ADR -- )          MAXSIEVE 0 DO                      I DISPWIDTH .R ." : IS "        DUP I IS-PRIME? 0= IF              ." NOT "                     ENDIF                           ." PRIME." CR                LOOP                            DROP ;                                                                                          : PRINT-PRIMES ( ADR -- )       MAXSIEVE 0 DO                      DUP I IS-PRIME?                 IF I . ENDIF                 LOOP                            DROP CR ;                       -->                                                                                                                                                             BIF   DEFINITIONS                                               : SIEVEMAIN ( -- )              [ SIEVE-LOCAL ]                 SIEVE SIEVE-INIT                SIEVE FIND-PRIMES               SIEVE PRINT-PRIMES CR           ." COUNT: "                     SIEVE COUNT-PRIMES . CR ;                                                                       SIEVEMAIN                                                                                       ( 8192: 8 SECONDS TO FIND )     ( 3 TO COUNT )                  ( XROAR, NORMAL CLOCK )                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         ( ARCHETYPICAL IMPLEMENTATION ) ( OF THE SIEVE OF ERATOSTHENES )( IN FORTH -- BIF-6809 -- )     ( COPYRIGHT 2015, 2019, )       ( JOEL MATTHEW REES )           ( WRITTEN BY JOEL MATHEW REES, )( AMAGASAKI, JAPAN, 2015, 2019 )( ALL RIGHTS RESERVED. )        ( PERMISSION GRANTED BY THE )   ( AUTHOR TO USE THIS CODE )     ( FOR ANY PURPOSE,  )           ( ON CONDITION THAT )           ( SUBSTANTIAL USE  )            ( SHALL RETAIN THIS COPYRIGHT ) ( AND PERMISSION NOTICE. )                                      256      CONSTANT MAXSIEVE      MAXSIEVE 1- 2 /                   CONSTANT FINALPASS                                            5 CONSTANT DISPWIDTH            ( ENOUGH DIGITS )               ( TO DISPLAY MAXSIEVE )                                         ( BIF AND FIG HAVE NO DEFAULT ) ( BEHAVIOR FOR CREATE-D WORDS ) 0 VARIABLE SIEVE                  MAXSIEVE 2- ALLOT                                                                             -->                                                             : SIEVEMAIN ( -- )              0 SIEVE C!                      ( 0 IS NOT PRIME. )             0 SIEVE 1+ C!                   ( 1 IS NOT PRIME. )             SIEVE MAXSIEVE 2 DO             ( SET FLAGS TO TRUE )           ( FOR 2 TO FINALPASS. )            -1 OVER I + C! LOOP          ( SIEVE PTR STILL ON STACK. )   FINALPASS 2 DO                  ( CLEAR FLAGS AT MULTIPLES. )      DUP I + C@ IF                ( DON'T BOTHER IF NOT PRIME. )        MAXSIEVE I DUP + DO       ( START AT FIRST MULTIPLE )     ( -- DOUBLE. )                           0 OVER I + C!          ( CLEAR AT THIS MULTIPLE. )           J +LOOP                   ( SIEVE STILL ON STACK. )          ENDIF                        LOOP  ( SIEVE STILL ON STACK. ) MAXSIEVE 0 DO                      I DISPWIDTH .R ." : IS "        DUP I + C@ 0= IF                   ." NOT "                     ENDIF                           ." PRIME." CR                LOOP DROP ;                      -->                                                                                            SIEVEMAIN                                                       ( 8 SECONDS )                   ( FROM CALL TO SIEVEMAIN )      ( ON XROAR. )                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   ( FROM ROSETTA CODE )           ( MODIFIED TO GIVE ROOM )       ( FOR OTHER WORDS THAT )        ( USE THE HERE REGION )         ( WITHOUT ALLOCATION. )                                         ( https://rosettacode.org/wiki/Sieve_of_Eratosthenes#Forth )                                    ( USE BOTTOM TO MOVE )          ( OUT OF EXPECT BUFFER )        : BOTTOM HERE 256 + ;                                           : PRIME? ( N -- ? )               BOTTOM + C@ 0= ;                                              : COMPOSITE! ( N -- )             BOTTOM + 1 SWAP C! ;                                          : 2DUP OVER OVER ;                                              : SHOWPRIMES                      ." PRIMES: "                    2 DO I PRIME?                     IF I . ENDIF                  LOOP ;                                                        -->                                                                                                                                                                                             : COUNTPRIMES                     ." PRIME COUNT: "               0 SWAP                          2 DO I PRIME?                     IF 1+ ENDIF                   LOOP                            . ;                                                           : SIEVE ( N -- )                  BOTTOM OVER ERASE               2                               BEGIN                             2DUP DUP * >                  WHILE                             DUP PRIME? IF                     2DUP DUP * DO                     I COMPOSITE!                  DUP +LOOP                     ENDIF                           1+                            REPEAT                          DROP                            ;                                                             -->                                                                                                                                                                                             ( SIEVE DEFINED. )                                              ( EDIT SIEVE COUNT TO DO MORE )                                 ( SIEVE IS KEPT IN THE )        ( FREE RAM AREA, )              ( MOVED DOWN BY BOTTOM )        ( TO AVOID EXPECT-ED CONFLICT )                                 ( BUT IT DOESN'T WORK. )                                        ( SHOULD BE OKAY BEYOND 8192 )  100     SIEVE                                                   DUP                                                             SHOWPRIMES                                                      COUNTPRIMES                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             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