Specifications

Jumper Configurations
Table A-1
Jumper Descriptions (continued).
JUMPER # DESCRIPTION
W68(A,B) Memory size selection jumper for socket
7D1. The "B" position connects Vcc to
socket 7D1 pin 30 for 128K and smaller
RAM devices. The "A" position connects
address line "LA17" to socket 7D1 pin 30 for
512K RAM devices. Factory default installs
W68B. The location of W68 is shown in
Figure A-9 on page A-26.
W68A W68B Function
IN OUT Selects 512K devices for socket 7D1
OUT IN† Selects 128K and smaller devices for socket 7D1
A-53