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Old 16th Oct 2018, 12:45 pm   #43
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Location: Ipswich, Suffolk, IP4, UK.
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Default Re: 486 PC. Keyboard problem.

The com ports do require drivers. I think this applies regardless of the OS used.

The drivers are installed during the initialisation phase of the application software and confirmation of their installation is reported on screen. The problem was that the actual driver files weren't on the FD which had been produced from a download. The app didn't report this as a specific failure, but just aborted.

I added the driver files to the FD and they were installed correctly. Trouble is that, immediately after installing the drivers, the app still aborts with no reason given. At this point the mode command returns no useful information about the com ports and of course the echo command doesn't work.

I'll have to try a different approach like using another PC with three com ports, or perhaps trying to talk directly to the machine using say HyperTerminal.
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