5.Gently press the chip halfway into the socket (to make sure it is correctly aligned). If the chip goes in at an angle, remove it with a chip puller or a small flat-head screwdriver and try again.

6.When the chip is properly positioned, push down firmly on both ends of the chip to make sure it is well-seated.

7.Repeat steps 4 through 6 for each of the remaining chips.

8.Replace any option cards you removed. See page 4-14 for instructions.

When you start your computer, it displays the video memory briefly before it begins its memory test.

lnstalling ExternaI Cache

You can install 64Kl3,128KB, or 256KB of external cache on your system.

0To install 64KB of external cache, use eight SRAM, 28-pin, 8K x 8,20ns DIP chips, and one 8K x 8,20ns tag chip

0To install 128KB of external cache, use four SRAM, 28-pin, 32K x 8,20ns DIP chips, and one 32K x 8,20ns tag chip

0To install 256KB of external cache, use eight SRAM, 28-pin, 32K x 8,20ns DIP chips, and one 32K x 8,20ns tag chip.

For the cache memory to work properly, you must install chips in the following configuration (each bank contains four cache memory sockets).

Installing and Removing Options 4-23