>We are having problems with a communications program we wrote using COMET.BIN years ago which is integrated into our product. We currently market both a Windows version of our product and an old DOS version for existing cutomers which need more capacity. Our problem is that we can no longer detect various modem events in the DOS version running on a P4. We can dial and make a connection but after that all bets are off. I know there is a patch for 2.6 Windows but will the same patch work with DOS or is there another patch available?
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Are you sure this is related to the P4? Sounds more like an OS thing to me. Communications may be handled differently under Windows NT/2000/XP. Also, if you're using XP, there are some Compatibility settings that might help.