Computer Hardware User Manual

A - 1
The table below provides the DIP-Switch settings for
valid base I/O addresses of the ISI551PC. The
switches can be set to "OPEN" (O in the table below)
or to "CLOSED" (C in the table below). Holding the
board with the switch facing you (reading numbers
1-8 left to right), the "UP" position for the switch is
OPEN, and the "DOWN" position is CLOSED. "S1"
below is labeled as "1" on the left side of the switch
and so on, through S8. For an example, turn to page
A-3 and compare the default switch settings (2F8)
with the address 380h listing.
I/O Addr. DIP-Switch Settings
(hex) S1 S2 S3 S4 S5 S6 S7 S8
Table A-1
I/O Address Switch Settings for ISI Cards
100CCCCCO CC
108 O CCCCO CC
110 C O CCCO CC
118 OOCCCO CC
120 C C O CCO CC
128 O C O CCO CC
130 C OOCCO CC
138 OOOCCO CC
140 C C C O C O CC
148 O CCO C O CC
150 C O C O C O CC
158 OOC O C O CC
160 C C OOC O CC
168 O C OOC O CC
Appendix A Base I/O Address
Switch Settings