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by userbinator
2118 days ago
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Does the microcode give any hints on why the general PUSH and POP are in completely different places in the opcode map (push is FF/6, pop is in its own group in 8F/0 with 8F/1-7 invalid, while FF/7 is unused)? It almost looks like FF/7 was supposed to be the pop. I've always wondered what 8F/1-7 and FF/7 do on an 8086/8 too, but it's very hard to find that information. |
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