All about busses, chips, emulators, and the new “G3” PowerPC 750
When Apple introduced the Power Macintosh back in 1994, it pulled off an engineering feat that's rarely been equalled in the computing industry: Apple successfully migrated an operating system and the vast majority of existing applications from the 68000 family of processors to RISC-based PowerPC processors
In TidBITS-334, we looked at the PowerPC processor family and some of the terms and technologies associated with it. If you read the article, your probably know the difference between 68K and PowerPC chips, why clock speed and clock multipliers are important, the difference between Level 1 and Level 2 caches, and the differences among different PowerPC chips
Beginning in TidBITS-334, we published a series of articles explaining the technical guts of a PowerPC-based Mac. We examined differences between PowerPC 601, 603, and 604 processors; Level 1 and Level 2 processor caches, the importance of the system bus, the 68K emulator, and other items.
Since then, the PowerPC world has changed