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microprossesor 8086 opcode need help.

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ericyeoh

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Hi guys, just wanna ask is below are correct?

ADD Bx,1234.

Using --> "ADD immed to reg/mem 100000sw mod000r/m [addr] data"

then 1000 0001[SW] 11MODERATOR ACTION: 011[BX] 110 [direct address]

opcode = 81 DE H

Is is correct?

How about MOV [1234],AX?
 

Take my advice, don't waste your time coding 8086 programs in binary.

Get hold of a free assembler, I suggest NASM or FASM and just type the instruction in. If you really must see the binary code, assemble the opcode then look at the resulting list file, it will show the instruction and it's hex or binary equivalent side-by-side.

Brian.
 

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