PCI/ISA System Board
2-13
u
Installation Overview
Cache Configuration
The 586OP system board can be configured to three
different cache sizes: 256KB, 512KB and 1MB. 256KB
is the default size. The SRAM sockets allow you to
install either 32Kx8, 64Kx8 or 128Kx8 SRAM. Regard-
less of the amount of cache memory installed, one
optional 64Kx1 dirty bit (U26) and one 32Kx8 (U25) is
needed for tag RAM to store the cacheable addresses.
The locations of the SRAM sockets on the system board
are shown below.
OPTi
82C547
OPTi
82C606
Locations of the SRAM Sockets on the 586OP System Board
U4
U7
U9
U11
U5
U8
U10
U12
OPTi
82C546
NS
PC87332VF
NS
PC87410
OPT
i
82C20
6
OPT
i
82C60
6
OPTi
82C822
U25 U26
Socket 4
(ZIF SOcket)
Pin 1 of the SRAM socket
