Specifications

Jumper Configurations
Table A-1
Jumper Descriptions (continued).
JUMPER # DESCRIPTION
W65(A,B) Install W65B to drive the STD bus write
signal (WR*) during I/O cycles with the
8288 I/O Write control (IOWC*). Install
W65A to drive WR* with the 8288 Ad-
vanced I/O Write control (AIOWC*). The
AIOWC* signal starts one clock earlier with
respect to IOWC* in the four clock CPU
cycle. Factory default installs W65A.
W65A W65B Function
IN † OUT Select advanced write pulse for I/O cycles
OUT IN Select normal write pulse for I/O cycles
A-50