Upgrading Cache Memory,
Continued
Upgrade Procedure
Step
Action
1
Move all SW1 switches to ON.
2
Remove all old SRAM chips from U31, U32, U34, U37, U39,
U41, U42, U44, U45, U46, and U47.
3
Place the new 24-pin 64 KB x 4 static RAM chips in U31,
U34, U37, U39, U41, U42, U44, U45, U46, and U47. Make
sure that the pins are straight and that all pins are inserted in
the receptacles.
Do not install a Static RAM chip in U32 when upgrading to
256 KB cache memory.
4
Turn the system on. The Boot Screen should display 256 KB
of cache memory. If 256 KB does not display, check for bent
pins on the new SRAM chips.
Summary of Contents for 42 Series
Page 1: ...American Megatrends Inc Series 42 Mark V Baby Screamer 80386 Motherboard User s Guide ...
Page 2: ...MAN 642 Rev C 9 11 92 ...
Page 13: ......
Page 35: ...A29 SA02 B29 5 A30 SA01 B30 OSC A31 SA00 B31 GND ...
Page 59: ......
Page 82: ......
Page 85: ...SRAM Locations ...