📄 wflash.asm
字号:
.global main
.text
main: LDP DA
LDI @STATE,ST
LDI @STACK,SP
XOR IE,IE
XOR IF,IF
LDI @ADDR,AR7
LDI 0c8H,R1
STI R1,*AR7
*************************************************
LDI @PROG_0,AR0
LDI @PROG_1,AR1
LDI @FLASHADD,AR2
LDI @DATADDR,AR3
LDI 0,R0
LDI 0,R1
CALL ERASE
NOP
NOP
NOP
LDI 4000,RC ;RC 的值为整个需要烧写的程序-1个3166
RPTB PROGRAM
LDI *AR3++,R0
CALL PROGBYTE
NOP
PROGRAM: NOP
LOP: BR LOP
ERASE: PUSH R7
LDI 0AAH,R7
STI R7,*AR0
LDI 055H,R7
STI R7,*AR1
LDI 080H,R7
STI R7,*AR0
LDI 0AAH,R7
STI R7,*AR0
LDI 055H,R7
STI R7,*AR1
LDI 010H,R7
STI R7,*AR0
LDI @ERASE_WAIT,R7
WAIT:
RPTS R7
NOP
POP R7
RETS
PROGBYTE:
PUSH ST
PUSH RC
PUSH RE
PUSH RS
PUSH R7
LOOP: LDI 0AAH,R7
STI R7,*AR0
LDI 055H,R7
STI R7,*AR1
LDI 0A0h,R7
STI R7,*AR0
STI R0,*AR2++
LDI @PROGRAM_WAIT,R7
REP: RPTS R7
NOP
POP R7
POP RS
POP RE
POP RC
POP ST
RETS
.data
DA:
DATADDR .word DATA
STATE .word 02800h
FLASHADD .word 0400000h
ADDR .word 0808064H
PROG_0 .word 0405555h
PROG_1 .word 0402aaah
ERASE_WAIT .word 7692308
PROGRAM_WAIT .word 1538
STACK .word 0809e00h
DATA:
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