-\ BOOT.4th
+; --------
+; BOOT.f
+; --------
+\
+\ to see kernel options, download FastForthSpecs.f
+\ FastForth kernel options: MSP430ASSEMBLER, CONDCOMP, SD_CARD_LOADER, BOOTLOADER
+\
\ TARGET SELECTION
\ MSP_EXP430FR5739 MSP_EXP430FR5969 MSP_EXP430FR5994 MSP_EXP430FR6989
-\ MSP_EXP430FR2433 MSP_EXP430FR4133 MSP_EXP430FR2355 CHIPSTICK_FR2433
-
-
-
-\ SYSRSTIV decimal values for MSP430FR5994 (device specific)
-\ ----------------------------------------------------------
-\ 00 No interrupt pending
-\ 02 Brownout (BOR)
-\ 04 RSTIFG RST/NMI (BOR)
-\ 06 PMMSWBOR software BOR (BOR)
-\ 08 LPMx.5 wake up (BOR)
-\ 10 Security violation (BOR)
-\ 12 Reserved
-\ 14 SVSHIFG SVSH event (BOR)
-\ 16 Reserved
-\ 18 Reserved
-\ 20 PMMSWPOR software POR (POR)
-\ 22 WDTIFG watchdog timeout (PUC)
-\ 24 WDTPW password violation (PUC)
-\ 26 FRCTLPW password violation (PUC)
-\ 28 Uncorrectable FRAM bit error detection (PUC)
-\ 30 Peripheral area fetch (PUC)
-\ 32 PMMPW PMM password violation (PUC)
-\ 34 MPUPW MPU password violation (PUC)
-\ 36 CSPW CS password violation (PUC)
-\ 38 MPUSEGIPIFG encapsulated IP memory segment violation (PUC)
-\ 40 MPUSEGIIFG information memory segment violation (PUC)
-\ 42 MPUSEG1IFG segment 1 memory violation (PUC)
-\ 44 MPUSEG2IFG segment 2 memory violation (PUC)
-\ 46 MPUSEG3IFG segment 3 memory violation (PUC)
-
-
-
-
-
-\ SYSRSTIV values added by FAST FORTH
-\ -----------------------------------
-\ 05 reset after compilation of FAST FORTH kernel
-\ -1 hardware DEEP RESET: restores state of the lastest FastForth flashed
-
-
+\ MSP_EXP430FR4133 MSP_EXP430FR2433 MSP_EXP430FR2355 CHIPSTICK_FR2433
+\
+\ SYSRSTIV decimal/hex values for MSP430FR5994 (device specific)
+\ ----------------------------------------------------------
+\ #00 $00 No interrupt pending
+\ #02 $02 Brownout (BOR)
+\ #04 $04 RSTIFG RST/NMI (BOR)
+\ #06 $06 PMMSWBOR software BOR (BOR)
+\ #08 $08 LPMx.5 wake up (BOR)
+\ #10 $0A violation memory protected areas (BOR)
+\ #12 $0C Reserved
+\ #14 $0E SVSHIFG SVSH event (BOR)
+\ #16 $10 Reserved
+\ #18 $12 Reserved
+\ #20 $14 PMMSWPOR software POR (POR)
+\ #22 $16 WDTIFG watchdog timeout (PUC)
+\ #24 $18 WDTPW password violation (PUC)
+\ #26 $1A FRCTLPW password violation (PUC)
+\ #28 $1C Uncorrectable FRAM bit error detection (PUC)
+\ #30 $1E Peripheral area fetch (PUC)
+\ #32 $20 PMMPW PMM password violation (PUC)
+\ #34 $22 MPUPW MPU password violation (PUC)
+\ #36 $24 CSPW CS password violation (PUC)
+\ #38 $26 MPUSEGIPIFG encapsulated IP memory segment violation (PUC)
+\ #40 $28 MPUSEGIIFG information memory segment violation (PUC)
+\ #42 $2A MPUSEG1IFG segment 1 memory violation (PUC)
+\ #44 $2C MPUSEG2IFG segment 2 memory violation (PUC)
+\ #46 $2E MPUSEG3IFG segment 3 memory violation (PUC)
+\
+\ SYSRSTIV values added by FastForth
+\ ----------------------------------
+\ -3 reset after FastForth "flashing".
+\ -1 Deep Reset: restores FastForth as it was "flashed".
+\
\ note
-\ Origin of reset is kept in SYSRSTIV register. Their values are device specific.
+\ --------------------------------------------------------------------------------
+\ any reset event is kept in SYSRSTIV register. Their values are device specific.
\ WARM displays the content of SYSRSTIV register.
+\ --------------------------------------------------------------------------------
\ When BOOT.4TH is called by the FastForth bootstrap, the SYSRSTIV value is on
-\ the paramater stack, ready to test
+\ the Top Of paramater Stack -TOS- ready to test.
+\ --------------------------------------------------------------------------------
+\ to enable bootstrap: ' BOOT IS WARM
+\ to disable bootstrap: ' BOOT [PFA] IS WARM
+\ --------------------------------------------------------------------------------
+\
+\ first, we test for downloading driver only if good FastForth version
+
+CODE ABORT_BOOTSTRAP
+SUB #2,PSP
+MOV TOS,0(PSP) \
+MOV &VERSION,TOS \ -- sys_event version
+SUB #308,TOS \ FastForth V3.8
+COLON
+'CR' EMIT \ return to column 1 without 'LF'
+ABORT" FastForth V3.8 please!"
+PWR_STATE \ remove ABORT_BOOTSTRAP definition before resuming
+;
+
+ABORT_BOOTSTRAP
+
+[UNDEFINED] = [IF]
+\ https://forth-standard.org/standard/core/Equal
+\ = x1 x2 -- flag test x1=x2
+CODE =
+SUB @PSP+,TOS \ 2
+0<> IF \ 2
+ AND #0,TOS \ 1
+ MOV @IP+,PC \ 4
+THEN
+XOR #-1,TOS \ 1 flag Z = 1
+MOV @IP+,PC \ 4
+ENDCODE
+[THEN]
\ --------------------------------------------------------------------------------
\ WARNING !
\ --------------------------------------------------------------------------------
-\ it is not recommended to compile then execute a word to perform the bootstrap
-\ because the risk of crushing thereafter. Interpreting mode as below is required:
+\ it is not recommended here to compile then execute a word
+\ because the risk of crushing thereafter.
+\ Interpreting mode as below is required:
\ --------------------------------------------------------------------------------
-
\ it's an example:
-DUP $06 =
-[IF] \ origin of reset = COLD
+$04 = [IF] \ if PUC event is <reset>
LOAD" SD_TEST.4TH"
-[ELSE] DUP $02 =
- [IF] \ origin of reset = power ON
- LOAD" RTC.4TH"
- [THEN]
[THEN]
-DROP
-ECHO \ don't forget!
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