American Megatrends 42 Series User Manual page 86

SRAM Type by Location
The following table shows the SRAM types that should be installed for each SRAM socket for both 64 KB and 256 KB Cache
Memory at 33 MHz operation.
U32 is a 22-pin SRAM DIP . All other SRAMs are 22/24 pins DIPs.
Socket 64 KB Cache 256 KB Cache
U31 16 KB x 4 64 KB x 4
U32 16 KB x 4 Not Installed
U34 16 KB x 4 64 KB x 4
U37 16 KB x 4 64 KB x 4
U38 64 KB x 1 64 KB x 1
U39 16 KB x 4 64 KB x 4
U41 16 KB x 4 64 KB x 4
U42 16 KB x 4 64 KB x 4
U44 16 KB x 4 64 KB x 4
U45 16 KB x 4 64 KB x 4
U46 16 KB x 4 64 KB x 4
U47 16 KB x 4 64 KB x 4