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GoblinSlayer
2 days ago
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XOR'ing a register with itself is the idiom for ze...
Harvard Mark I? Not sure why people think programming started with Z80.
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bonzini
2 days ago
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[β]
The article is about x86, and x86 assembly is mostly a superset of 8080 (which is why machine language numbers registers as AX/CX/DX/BX, matching roughly the function of A/BC/DE/HL on the 8080βin particular with respect to BX and HL being last).
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GoblinSlayer
1 day ago
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So you say x86 wasn't made ex nihilo, but evolved from previous designs? When this evolution began? 8080 followed 8008, code for which was written in macro-11
https://en.wikipedia.org/wiki/PDP-11_architecture#Example_co...
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flohofwoe
2 days ago
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My WW2-era assembly is a bit rusty, but I don't think the Harvard Mark 1 had bitwise logical operations?
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