Installing External Cache
You can install 64KB, 128KB, or 256KB of external cache on
your system.
8x8, 20ns DIP chips, and one 8x8, 20ns tag chip
32 x 8, 20ns DIP chips, and one 8 x 8, 20ns tag chip
32 x 8, 20ns DIP chips, and one 32 x 8, 20ns tag chip
with a Pentium OverDrive processor, make sure the tag
chip is a 151ns chip.
For the cache memory to work properly, you must install chips
in the following configuration (each bank contains four cache
memory sockets):
Cache memory configurations
BANK0
U44,45,46,47
8 K x 8
I
3 2 K x 8
3 2 K x 8
Installing and Removing Options
4-22
BANK1
U 4 8 , 4 9 , 5 0 , 5 1
U 4 3
8 K x 8
I
I 8 K x 8
(empty)
3 2 K x 8
Tag SRAM
Total cache
8 K x 8
64KB
I
128KB
3 2 K x 8
I