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36 Interface Specifications
B. PARALLEL (CENTRONICS)
The parallel port is a standard 36-pin Centronics-type
connection. Its pin assignments are listed as following.
Pin Direction Definition Pin Direction Definition
1 In /STROBE 13 Out SELECT
2 In Data 1 14,15 NC
3 In Data 2 16 - Ground
4 In Data 3 17 - Ground
5 In Data 4 18 NC
6 In Data 5 19~30 - Ground
7 In Data 6 31 NC
8 In Data 7 32 Out /Fault
9 In Data 8 33~36 - NC
10 Out /ACK
11 Out BUSY
12 Out PE
C. AUTO POLLING
Both the serial and parallel ports are active at the same time on
this printer, so data can be received on either one, however no
provision is made for port contention. If data is transmitted to
both ports simultaneously, it will cause the data in the received
buffer to be corrupted.
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