this post was submitted on 19 May 2025
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What's a piece of esoteric knowledge you have? (lemm.ee)
submitted 2 days ago by Irelephant@lemm.ee to c/asklemmy@lemmy.ml
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[โ€“] CapriciousDay@lemmy.ml 5 points 13 hours ago* (last edited 13 hours ago) (1 children)

The Dreamcast SH4 processor has an instruction FTRV to accelerate FP32 4D Matrix*4-Vector multiplies. As far as I understand it, it was the first home console CPU that allowed you to perform effectively multiple MAD operations in one instruction. But it has a bit of a latency penalty.

[โ€“] Dagwood222@lemm.ee 2 points 6 hours ago (1 children)

Keep that shit under your hat. Consequences could be dire.