Can I select an opcode?

[fuzzball]

NASM converts "and al,al" to "20C0", but I need "22C0".
Is there a way?

[fuzzball]

additional information:

Code: [Select]

% ndisasm test.bin
00000000  20C0              and al,al  ; AND reg/mem,reg
00000002  22C0              and al,al  ; AND reg,reg/mem


[vitsoft]

Only few assemblers let you choose operation code used for encoding, for instance €ASM:

|0000:20C0    |  AND AL,AL
|0002:20C0    |  AND AL,AL,CODE=SHORT
|0004:22C0    |  AND AL,AL,CODE=LONG

[fuzzball]

Only few assemblers let you choose operation code used for encoding, for instance €ASM:

Thank you. I will try that a little.
I want to work on Windows and macOS, so it's a shame I can't find a binary for macOS.