Level 2 Cache Options - Abit PR5 User Manual

Level 2 Cache Options

The Level 2 cache on the PR5 greatly speeds up system
operation. There will be at least 256KB of very fast Pipe-
line Burst Static RAM (SRAM) cache memory mounted
either on the mainboard or on a cache module that in-
stalls in the cache socket. You can upgrade the Level 2
cache to a maximum of 512KB regardless of whether the
memory is on the board or on a module.
If there is 256KB of cache memory mounted on the
mainboard, you can use a 256KB cache module to up-
grade the Level 2 cache to 512KB. See the cache options
in the following table. Jumper JP1 sets the cache size.
PR5 Level 2 Cache Configuration Settings
Onboard Module Total
0 K B 0 K B
2 5 6 K B
2 5 6 K B 2 5 6 K B
2 5 6 K B 2 5 6 K B 5 1 2 K B
5 1 2 K B
5 1 2 K B 5 1 2 K B
Note: Onboard 256KB uses 32K32 SRAM, 512KB uses 64K32 SRAM.
JP1 settings, ON = Jumper cap installed, OFF = Cap on one pin only.
Jumper JP1 Location
J P 1
JP1 Setting
0 K B O F F
2 5 6 K B O F F
O F F
O N
5 1 2 K B O F F
O N