HwMuseum | Index

ZENITH DATA SYSTEMS

MULTIPORT I/O CARD

Card Type

Multi-I/O

Chipset/Controller

Unidentified

I/O Options

Parallel, serial I/O via DB-37 port

Maximum DRAM

N/A

CONNECTIONS

Purpose

Location

Parallel and serial I/O DB-37 port

CN1

SERIAL RECEIVE CLOCK

» Setting

J10

»

External clock

Pins 2 & 3 closed

»

Internal clock

Pins 1 & 2 closed

SERIAL TRANSMIT CLOCK

» Setting

J11

»

External clock

Pins 1 & 2 closed

»

Internal clock

Pins 2 & 3 closed

MISCELLANEOUS TECHNICAL NOTES

The DB-37 port is designed to connect to a "breakout box" consisting of two DB-25 external connectors for parallel and serial I/O.