Primary / Alternate Address Jumper - IBM RT PC Options Installation

TNL SN20-9864 (May 1987) to 75X0217
Primary
I
Alternate Address Jumper
The position of jumper module J3 sets the adapter 110 address as Primary
(the default setting) or Alternate. Jumper J3 also sets the DMA level at 5
for Primary and 6 for Alternate. To change J3, do the following:
1. Carefully insert a small, flat-bladed screwdriver under the J3 jumper
module, alternately lifting the ends to extract the module evenly.
Warning: Do not bend the pins!
o
~
. . . . . . . . . . . . . . . . . . . . .
c:::::l
c=l ::;
c:::J
.------, aa ~ ....................
1 D 1
L=:J
~
..................
c:::::l
c:::::::::J
c:::::l
~
~ ~ c::::::J
c::::J c::::::J c=:::J c::::::J c::::J c=:::J
••••••••••• c::=:::J c::::::J c::::::J c::::=::::::J c::::=::::::J ~ c::::=::::::J
1:::::::::::1
=
I
D
I
c::::::J c::::::J c::::=::::::J c::::=::::::J c::::::J c::::=::::::J c::::=::::::J 0
~
c:::::l
0
III:::
\l11lII1lllilllllIllTlIIlllllll1DlllllllDlIDlllJ.J.]]lf""---J
or
Alternate
Part Number
61X3797
2. Turn the module 180
0
and reinstall.
6-22
Options Installation