Micronics M4Pe System Board Manual
3-8
Figure 3-3 Upgrading to 256K External Cache
Upgrading to 512K Cache
Boards can be upgraded to 512K by removing any SRAM chips installed in
Sockets U20, U21, U22, and U23 and adding four 128K x 8 SRAM chips,
rated at 15 nanoseconds or faster (Figure 3-4). Complete the following steps
to upgrade your system to 512K:
1.
Turn off the computer system and remove its cover.
2.
Locate sockets U20, U21, U22, and U23 and remove any SRAM
chips installed in these sockets.
3.
Locate sockets U24, U25, U26, and U27.
4.
Align the notch on the SRAM chip with the notch on the socket.
5.
Carefully place the chips into place, making sure each pin is inserted
into the proper receptacle.
6.
Configure the jumpers for 512K of Level 2 Cache (Table 2-1).
Figure 3-4 Upgrading to 512K External Cache
