component side (not the solder side) o f the component
board is showing.
3. Refer to Figure 1.2. The factory settin g of the wire
jumpers J10» J9, and J8 as shown in this Figure is al]
OFF. I f you are using one of the three mice named above,
these jumpers must be a ll ON. To set a jumper to the Of
position, unhook the wire from its retaining c lip anc
hook i t under the retaining c lip immmediately to the
le ft.
4. A small panel holding 7 pairs of connector pins ie
situated immediately behind the multipin connector plug
at the position marked J1 on the component board. I f yov
wish to change the IFSEL number, you must place the twc
bridge connectors over the appropriate pins. In Figure
1.2, the leftm ost pair o f pins is J1, the rightmost J7,
These connectors are factory set to IFSEL 2A. The table
included in Figure 1.2 states which two pairs of pins
have to be bridged for each IFSEL number.
5. Re-assemble the Mouse Interface.
Figure 1.3 shows the group o f port addresses belonging tc
each IFSEL number.
rosa,
poms
OA
60-67
OB
68-6F
1A
70-77
1B
7&-7F
2k
30-37
a
38-3F
3A
BÖ-B7
3B
B8-W
4A
c o - a
4B
C8-CF
Figure 1.3 IFSEL Port Assignments
MOUS E-4
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