5 lines
509 B
Markdown
5 lines
509 B
Markdown
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| Opcode | Instruction | Op/En | 64-Bit Mode | Compat/Leg Mode | Description |
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| ---------- | ----------- | ----- | ----------- | --------------- | ------------------------------ |
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| 99 | CWD | ZO | Valid | Valid | DX:AX := sign-extend of AX. |
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| 99 | CDQ | ZO | Valid | Valid | EDX:EAX := sign-extend of EAX. |
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| REX.W + 99 | CQO | ZO | Valid | N.E. | RDX:RAX:= sign-extend of RAX. |
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