Why can't I compare two operands?

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pepl2132018-10-31 16:29:11

assembler

pepl213, 2018-10-31 16:29:11

Why can't I compare two operands?

cmp si,al     ; si - счетчик в массиве; al - длина массива

Mistake:

processed: cmp si,al
error: operand sizes do not match.

What to do?

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1 answer(s)

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Sergey Gornostaev, 2018-10-31
@pepl213

Because SI is 16-bit and AL is 8-bit. Compare SI with AX.

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