User's Manual

In all cases, make sure you need to alter the jumper settings for the option

you are installing before you change anything.

Table A-l shows the functions for the jumpers on the memory card.

Table A-1. Memory card jumper settings

Jumper number

Function

2 3

5 6

A A A

640KB *

B A A

512KB (disable upper 128KB)

B B A

256KB (disable upper 384KB)

B B B

0KB (disable all RAM)

A A

Select EPROM size 27128

B B

Select EPROM size 27256

A A

Select EPROM pair 24A and 24B

B B

Select EPROM pair 23A and 23B*

* Default setting

To access the memory card jumpers, you need to remove the card from

the main unit first:

Remove the retaining screw from the bracket on the memory card, as

shown in Figure A-3.

Figure A-3. Removing memory card retaining screw

Lift the card gently out of the computer, taking care not to catch it on

any cables inside the computer. Set it on a soft surface, such as a towel,

with the component side facing up,

A-3