27 lines
348 B
Text
27 lines
348 B
Text
checkhiddenbx PROC NEAR
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push si
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mov ax,es:[bx]
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mov si,es:[bx+2]
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sub ax,es:[bx+4]
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sub si,es:[bx+8+2]
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imul si
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push ax
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push dx
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mov ax,es:[bx+2]
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mov si,es:[bx]
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sub ax,es:[bx+4+2]
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sub si,es:[bx+8]
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imul si
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pop cx
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pop si
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sub ax,si
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sbb dx,cx
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pop si
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cmp dx,0
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jl @@1
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clc
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ret
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@@1: stc
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ret
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checkhiddenbx ENDP
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