1987-01-08 10:13:48 +00:00
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.sect .text; .sect .rom; .sect .data; .sect .bss
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.sect .text
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1985-02-07 15:33:13 +00:00
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.define .inn
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! #bytes in cx
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! bit # in ax
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.inn:
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pop bx ! return address
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xor dx,dx
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xor si,si
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mov di,8
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div di
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mov di,sp
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add di,ax
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cmp ax,cx
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xchg ax,dx
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xchg ax,si ! ax:=si,si:=dx,does not change carry
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jae 1f
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movb dl,bits(si)
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testb (di),dl
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jz 1f
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inc ax
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1:
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add sp,cx
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! ax is result
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jmp bx
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1987-01-08 10:13:48 +00:00
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.sect .data
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1985-02-07 15:33:13 +00:00
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bits:
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1987-01-08 10:13:48 +00:00
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.data1 1,2,4,8,16,32,64,128
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