Cache Memory Configuration
There are two jumpers to be set for the cache memory selection
The jumper selections are as follows:
64K Open
128K
1-2
256K 2-3
Open
Close
Close
Note:
Table 3: Cache Memory Configurations
For 64K cadre,
install 8Kx8 SRAM in locations 1143, U34, 1135,
U36, U37, U39, U40, U41, and U42.
For 128K cache, install 8Kx8 SRAM in locations 1143, and 32Kx8
SRAM in locations U34, U35, U36, and U37.
For 256K cache install 32Kx8 SRAM in locations U43, U34,
U35, U36, U37, U39, U40, U41, and U42.
VESA VL-Bus Identifier Jumpers (JP19, JP20)
The identifier jumpers (JP19, JP20) allow VL-Bus slave to identify
the speed of the host CPU.
0 wait write min.
1 wait write min.
Open
Close
<=33MHz
> 33MHz
Open
Close
10
80486VESA Users Manual
