Developer Documentation
PATHHardware Documentation > Original Power Mac G3 Computers Developer Note


Block Diagrams and Main ICs

The architecture of the main logic board is based on the PowerPC G3 microprocessor and two buses: the processor bus and the PCI bus. The processor bus connects the microprocessor, video, cache, and memory; the PCI bus connect the expansion slots and the I/O devices. The PCI interface on the Power Macintosh G3 computers conforms to PCI specification revision 2.1. Figure 2-1 shows the main logic board block diagram.

Figure 2-1 Main logic board block diagram  


© 1998 Apple Computer, Inc. - Revised 8/13/98