APPENDIX A
PC COM DIAGNOSTIC UNDER MS/DOS

The TESTCOM is a diagnostic program, provide routines to test your PCCOM PCI 4 port serial adapter under MS-DOS. It has both internal and external loopback tests. During external loopback 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.

User can get TESTCOM program from Decision Studio CD.

    To test your PCCOM 4 port adapter under MS/DOS, please type

TESTCOM

The TestCom menu will appear.

Setup RS232/RS422 – is used to setup the baud rate, 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.