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Toivo Henningsson said...

It's interesting to see that they made the codes for e g AL and AH differ in the fourth and fifth bits, while they differ in the third bit instead in the instruction encoding. But I suppose it makes the hardware that needs to decode the register numbers simpler.

Mar 13, 2023, 4:49:29 AM

Posted to Reverse-engineering the register codes for the 8086 processor's microcode