📄 double_mul.asm
字号:
.def _double_mul
.data
multi01: .word 08080h
multi02: .word 08000h
multi11: .word 08080h
multi12: .word 08000h
.bss w0,1
.bss w1,1
.text
_double_mul:
stm #multi02,ar2
stm #multi12,ar3
stm #w0,ar4
ld #0,a
macsu *ar2,*ar3-,a
ld a,-16,a
macsu *ar2-,*ar3+,a
macsu *ar3-,*ar2,a
ld a,-16,a
mac *ar2,*ar3,a
ld a,1,a
sth a,*ar4+
stl a,*ar4
nop
RET
.end
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