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APPENDIX A PC COM DIAGNOSTIC UNDER MS/DOS The PCCOMQC program provides a
diagnostic routine to test your PCCOM 4 port serial adapter under
MS/DOS. It provides internal and external loopback tests. A loopback
plug must be connected to each port being tested, and you can select
differnet signal's connection to test communication signals from
hardware configuration function.
To test your PCCOM 4 port adapter under MS/DOS, please type A>PCCOMQC
(A>means system prompt) * Then select "PCCOM 4 port RS232" item. The hardware configuration is shown in the following.  |
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