Removing an Option Card

You may need to remove an option card installed in your computer to access components on the main system board-to change a jumper setting, for example. You may also want to remove a card if you no longer need it. Follow these steps:

1.Remove the retaining screw securing the option card to the computer. Then pull the card straight out of the slot.

2.Set the card aside with the component side facing up.

Adding Video Memory

Your computer comes with 256KB of video memory. You can increase your video memory to either 512KB or 1024KB by installing four or six video DRAM, 20-pin, 70ns or 80ns, 44256 DIP (Dual Inline Package) chips. This is useful for running graphics-intensive applications or for supporting resolutions up to 1024 x 768 on your monitor. See Appendix A for a table identifying supported colors and resolutions for each amount of video memory.

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

Video memory chip

configuration

 

 

 

 

 

 

 

 

 

 

 

 

 

Total

Bank 0

Bank 1

 

Bank 2

Bank 3

memory

 

 

 

 

 

 

Soldered

 

 

 

 

256KB*

 

 

 

 

 

 

Soldered

Filled

 

 

 

512KB

 

 

 

 

 

 

Soldered

Filled

 

Filled

Filled

1024KB

 

 

 

 

 

 

•Standard video memory

3-16 Installing and Removing Options