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- AST RESEARCH TECHNICAL BULLETIN TB-0064 10-11-84
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- SERIAL PORT WRAP PLUG
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- In order to test the complete circuitry of the serial port on an
- AST board (when running IBM diagnostics) there must be signals
- coming into the port. This may be accomplished by installing a
- wrap plug on the serial port connector. To construct a wrap plug
- use a standard RS232 DB25 female connector and wire these pins
- together.
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- 2 > 3
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- 4 > 5 > 22
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- 6 > 8 > 20
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- * Use 30 AWG wire or greater.