AOpen AP43 User Manual page 34

Hardware Setup
Press the SRAM chip gently but firmly into
place. Be careful not to bend the pins.
When upgrading the cache, install the SRAM chips and set jumpers
JP1, JP2, JP3, JP4 and JP5 accordingly. See the following figure.
128 KB
32 Kb x 4
JP1
JP2
JP3
JP4
JP5
2-16
256 KB 256 KB 512 KB 512 KB
32 Kb x 8 64 Kb x 4 128 Kb x 4 64 Kb x 8
User's Guide