APPENDIX A
PC COM DIAGNOSTIC UNDER MS/DOS

The TESTCOM is a diagnostic program, provide routines to test your PCCOM PCI 2 port serial adapter under MS-DOS. It has both internal and external loop back tests. During external loop back test, a loop back plug must be connected to each port being tested. You can also select different hardware settings during testing from the SETUP RS232/RS422 menu.

To test your PCCOM 2 port adapter under MS/DOS, please type

A>TESTCOM
        ( A> means system prompt )

The TestCom menu will appear.

Setup RS232/RS422 – is used to setup the baud rate, flow control, etc.
Internal loop test – is used to test the IC.
External loop test – is used to test the ports.
Auto – is used to test the IC and the ports of the card.