; -*- coding: utf-8 -*-
; forthMSP430FR_SD_LOAD.asm
-; Tested with MSP-EXP430FR5994 launchpad
-; Copyright (C) <2019> <J.M. THOORENS>
-;
-; This program is free software: you can redistribute it and/or modify
-; it under the terms of the GNU General Public License as published by
-; the Free Software Foundation, either version 3 of the License, or
-; (at your option) any later version.
-;
-; This program is distributed in the hope that it will be useful,
-; but WITHOUT ANY WARRANTY; without even the implied warranty of
-; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-; GNU General Public License for more details.
-;
-; You should have received a copy of the GNU General Public License
-; along with this program. If not, see <http://www.gnu.org/licenses/>.
-
+;Z SD_ACCEPT addr addr len -- addr' len' get line to interpret from a SD Card file
+; no interrupt allowed
+; defered word ACCEPT is redirected here by the word LOAD"
+; "defered" word CIB is redirected to SDIB (PAD if RAM<2k) by the word LOAD"
+; sequentially move an input line ended by CRLF from SD_BUF to PAD
+; if end of SD_BUF is reached before CRLF, asks Read_HandledFile to refill buffer with next sector
+; then load the end of the line to PAD ptr.
+; when all LOAD"ed files are read, redirects defered word ACCEPT to default ACCEPT and restore interpret pointers.
+; see CloseHandleT.
; used variables : BufferPtr, BufferLen
; SD card OPEN, LOAD subroutines
;-----------------------------------------------------------------------
+; used variables : BufferPtr, BufferLen
+
; rules for registers use
; S = error
; T = CurrentHdl, pathname
; ----------------------------------;
-
-
; ----------------------------------; input : X = countdown_of_spaces, Y = name pointer in buffer
ParseEntryNameSpaces ;XY
; ----------------------------------; output: Z flag, Y is set after the last space char
; ----------------------------------;
MOV.B #0,HDLB_ClustOfst(T) ; reset Current_Cluster sectors offset
CALL #HDLCurClusToFAT1sectWofstY;WXY Output: W=FATsector, Y=FAToffset, Cluster=HDL_CurCluster
- CALL #ReadFAT1SectorW ;SWX (< 65536)
+ ADD &OrgFAT1,W ;
+ MOV #0,X ;
+ CALL #ReadSectorWX ;SWX (< 65536)
MOV #0,HDLH_CurClust(T) ;
MOV SD_BUF(Y),HDLL_CurClust(T) ;
CMP #1,&FATtype ; FAT16?
BIC #Z,SR ;
; ----------------------------------;
CloseHandleRet ;
- MOV @RSP+,PC ; Z = 1 if no more handle
+ MOV @RSP+,PC ; Z = 1 if no more handle
; ----------------------------------;
; ----------------------------------;
ReturnOfSD_ACCEPT ;
; ----------------------------------;
- ADD #6,RSP ; R-- QUIT3 empties return stack
+ ADD #6,RSP ; R-- QUIT4 empties return stack
MOV @RSP+,IP ; skip return to SD_ACCEPT
; ----------------------------------;
CALL #CloseHandleHere ; Z = 1 if no more handle
; Error 16 : NomoreHandle ; S = error 16
; ----------------------------------;
mDOCOL ; set ECHO, type Pathname, type #error, type "< OpenError"; no return
+ .word ECHO ;
.word XSQUOTE ; don't use S register
.byte 11,"< OpenError" ;
- .word BRAN,SD_QABORTYES ; to insert S error as flag, no return
-; ----------------------------------;
+ .word BRAN,ABORT_SD ; to insert S error as flag, no return
+; ----------------------------------;
+
+
+ .IFDEF BOOTLOADER
+ .IFNDEF CORE_COMPLEMENT
+ FORTHWORD "+"
+; https://forth-standard.org/standard/core/Plus
+; + n1/u1 n2/u2 -- n3/u3 add n1+n2
+ ADD @PSP+,TOS
+ MOV @IP+,PC
+ .ENDIF
+
+ FORTHWORD "BOOT"
+; BOOT RSTIV_MEM -- ; bootstrap on SD_CARD\BOOT.4th file
+; ; called by WARM
+; to enable bootstrap type: ' BOOT IS WARM
+; to disable bootstrap type: ' BOOT 2 + @ IS WARM
+ MOV @PC+,X
+PFA_BOOT .word INIT_SD ; X = INIT_SD
+ CMP #2,TOS ; RSTIV_MEM <> WARM ?
+ JC QSD_MEM ; yes
+ MOV @RSP+,PC ; if RSTIV_MEM U< 2, return to BODYWARM
+QSD_MEM BIT.B #CD_SD,&SD_CDIN ; SD_memory in SD_Card socket ?
+ JZ BOOT_YES ;
+ MOV 2(X),PC ; if no, goto previous INIT: INIT TERMINAL then ret to PFAWARM
+;---------------------------------------------------------------------------------
+; RESET 6: if RSTIV_MEM <> WARM, init TERM, init SD
+;---------------------------------------------------------------------------------
+BOOT_YES CALL X ; init TERM UC first then init SD card, TOS = RSTIV_MEM
+;---------------------------------------------------------------------------------
+; END OF RESET
+;---------------------------------------------------------------------------------
+ MOV #PSTACK-2,PSP ; PUSH 0 on Stack
+ MOV #0,0(PSP) ;
+ MOV #0,&STATE ; )
+ MOV #LSTACK,&LEAVEPTR ; > same as QUIT
+ MOV #RSTACK,RSP ; )
+ ASMtoFORTH ;
+ .word XSQUOTE ; -- RSTIV_MEM addr u
+ .byte 15,"LOAD\34 BOOT.4TH\34" ; LOAD" BOOT.4TH" issues error 2 if no such file...
+ .word BRAN,QUIT4 ; to interpret this string
+ .ENDIF
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