62 lines
597 B
ArmAsm
62 lines
597 B
ArmAsm
.define prdec
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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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! print hl-reg as a decimal number.
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prdec: push h
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push d
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push b
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push psw
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lxi d,table
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mvi b,4
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1: call convert
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ori 0x30
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call putchar
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dcr b
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jnz 1b
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mov a,l
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ori 0x30
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call putchar
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pop psw
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pop b
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pop d
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pop h
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ret
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convert:
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push b
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mov b,h
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mov c,l
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xchg
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mov e,m
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inx h
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mov d,m
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inx h
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push h ! save pointer to new value
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mov h,b
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mov l,c
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mvi b,255
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1: inr b
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mov a,l
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sub e
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mov l,a
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mov a,h
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sbb d
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mov h,a
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jnc 1b
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dad d
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mov a,b
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pop d
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pop b
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ret
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table:
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.data2 10000
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.data2 1000
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.data2 100
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.data2 10
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