📄 system.asm
字号:
.include hardware.inc
.code
.public _Delay
_Delay: .proc //传入参数为1,延时2.5ms
push r1,r5 to [sp] //延时时间T = 2.5ms*n
bp = sp+3
L_Loop1:
r2 = r1
r3 = 1
r4 = 0x7012
[r4] = r3
call _ClearWatchdog
L_Loop2:
r2 -= 1
jnz L_Loop2
r1 -= 1
jnz L_Loop1
pop r1,r5 from [sp]
retf
.endp
.public _ClearWatchdog
_ClearWatchdog:.proc
push r1 to [sp]
r1 = 0x0001
[0x7012] = r1
pop r1 from [sp]
retf
.endp
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