I asked one of the CPU guys at IBM about that, and he said, yes they did a lot of profiling of MacOS, and common opcodes were given hardware, while seldom used instructions were done in microcode. In other words, the G3 was a 603e tuned for MacOS. The 604 was a mainstream (for IBM) Power processor, with emphasis on FP, multiprocessing, and multitasking in a server environment. One was an engine for a Mustang, the other an engine for a Greyhound bus.
Post #22 by H3NRY
| Source Forum | 68kMLA |
|---|---|
| Category | PowerPC |
| Post Date | Mon, 8 Mar 2010 - 06:20 |
| Original URL | https://68kmla.org/bb/threads/604e-versus-the-g3.16155/ |
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