
3 I/O CONNECTIONS
3.1 CONNECTOR DIAGRAM
The 100-pin, high-density connector is accessible through the computer’s expansion
bracket (Figure 3-1). The outputs signals from 8255 emulation registers are buffered
for higher current capacity. Three signals for each of the 15 82C54 counters, internal
PC +5V, and the 10 MHz oscillator output are also available.
Figure 3-1. 100-Pin Connector
3
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