SOYO 5SM2, User'S Manual & Technical Reference, Page: 17 / 37

14
Hardware Setup
Memory Configuration
The mainboard supports two banks of 72-pin SIMM or FDO DRAM (with or
without parity). The mainboard requires SIMM of at least 80ns access time.
The mainboard supports from 2 to 512 Mbytes with no other restrictions on
memory configurations. You can install DRAM in any combination without having to
rely on a memory configuration table. Memory configuration is thus ‘
(
Table-Free.”
. You can use single 32 bits DRAM on SIMM2 and SIMM4.
Cache Configuration
The mainboard has a write-back caching scheme. You can configure the
mainboard's cache by installing cache chips in
jumpers
JP
26 and JP27 to set the mainboard
Figures 2-2-2-3 for cache configurations,
the sockets noted below and then set
for the type of SRAM installed. See
Cache Size and RAM locations
1
Cacheable
Cache Size Cache RAM
TAG RAM Range
256KB U19, U20 8K,
16Kx8/
3 2 M B
U18
512KB U19, U20,
and 256KB
16K, 32Kx8/ 64MB
Pipelined Burst upgrade U18
module
I
I