34 lines
454 B
ArmAsm
34 lines
454 B
ArmAsm
.define .sli2
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.sect .text
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.sect .rom
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.sect .data
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.sect .bss
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.sect .text
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! Shift 16 bits integer left
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! Expects on stack: number of shifts
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! number to be shifted
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! Yields in de-reg: result
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.sli2: pop h
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shld .retadr
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pop d !de = number of shifts
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pop h !hl= number to be shifted
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mov a,d !if de>15 return zero
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ora a
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jnz 2f
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mov a,e
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cpi 16
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jnc 2f
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1: dcr e
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jm 3f
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dad h
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jmp 1b
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2: lxi h,0
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3: xchg !result in de-registers
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lhld .retadr
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pchl
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