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Avoiding Microcoded Instructions On The PPU
http://cellperformance.beyond3d.com/articles/2006/04/avoiding-microcoded-instructions-on-the-ppu.html
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What are microcoded instructions? Microcode is a special instruction set that is (usually) only available to the hardware. On the PPU (PowerPC Unit), small microprograms made up of microcode are stored in ROM and executed in the place of those...