User Guide

Basics Technology - 8
Technology
PowerPC 603ev
The PowerPC 603ev chip that is the CPU in the PowerBook
2400c is the same as the CPU on the PowerBook 3400c logic
board and includes a built-in cache of 32K (16K data and
16K instructions). The 603ev chip executes commands by
reading from ROM, writing to RAM, and communicating with
the I/O (input/output) via the PSX chip, and then outputs to
the video controller for display on the screen.
Level 2 Cache
To complement the Power PC 603ev processor, the
PowerBook 2400c implements 256K of level 2 (L2) cache.
Level 2 cache assists the processor by storing frequently