2026-02-14 17:45 UTC
Instruction decoding in the 8087 has many more complications: hardcoded instructions handled by the "Bus Interface Unit", instructions that load a constant from the constant ROM, and handling the instruction queue. For more details, see my latest blog post:
https://www.righto.com/2026/02/8087-instruction-decoding.html
Replies (1)
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@Sonic2k@oldbytes.space 2026-02-14 20:50
@kenshirriff I imagine this circuitry to be not much different to the integrated circuits made in the late 1960s that were explicitly designed to implement desktop calculators. Indeed it sure feels that way