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- 2004-9-21
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- 1970-1-1
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发表于 2005-5-17 17:34:00
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就是这个程序:
.org $4000
.db $ae,$ee,$ea,$00,$20,$00,$20
jmp start
.db $d0,$07,$30,$03,$ff,$ff
start:lda #$00
sta $40
lda #$00
sta $41
lda #$00
sta $42
lda #$00
sta $43
lda #$00
sta $44
lda #$00
sta $45
jsr Copy
Copy:pha
txa
pha
tya
pha
php
ldy #$00
L1:lda ($40),y
sta ($44),y
lda $40
cmp $42
bne L2
lda $41
cmp $43
bne L2
pla
tay
pla
tax
pla
plp
rts
L2:inc $40
bne L3
inc $41
L3:inc $44
bne L4
inc $45
L4:jmp L1
××××××××××××××××××××××××××××××××××××××
随便农个程序试一下就出毛病了
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