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PREPARATION FOR USE
Table 2-15.
Parallel Port Jumper Configuration (continued)
Port Mode
Driver
Jumper Configuration
Restrictions
Terminator
Delete
Add
Effect
Port
• Bit 1--Port CA
Input
Buf~r
Full
(IBF) output.
• Bit 2--Port CA
Strobe (STB/)
input.
-
• Bit 3--If Port C8
is in Mode 0, bit
3 can be input or
output.
Otherwise, bit 3
is reserved.
• Bits 4,5--Depends
on Port C8 mode.
• Bits 6,7--Input
or output (both
must be in same
direction).
CA
1 Output
T: U18
E58-E49
11
Connects
C8
None.
(latched) D: U19,U20
OBF B /
U21
output to
J1-22.
CC
Port CC bits per-
form the following:
E53-E44*
E44-E59
Connects
• Bit O--Port CA
and
J1-32 to
interrupt (PB
E59-E50*
ACK B /
INTR to interrupt
input.
jumper matrix.
E57-E48*
E57-E64
Connects
• Bit 1--Port CA
INTB
Output Buffer Full
output tc
(OBF/) output.
interrupt
matrix.
• Bit 2--Port CA
Acknowledge
(ACK/) input.
2-39
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