I have noticed that some notebooks have vender specific serial comms drivers
installed instead of the default Win95 drivers. This could be your problem.
Generally you can install the default Win95 driver and it will work, but
slower?. Look at Hsflop.PDR in the windows\system\iosubsys folder.
Dave.
> -----Original Message-----
> From: Grant Black [SMTP:[EMAIL PROTECTED]]
> Sent: Wednesday, 9 June 1999 11:26 am
> To: Multiple recipients of list delphi
> Subject: [DUG]: Serial comms (again)
>
> Had some annoying problems pop up at client sites with modems dropping
> out during comms.
>
> I found one bug in our xmodem handing in that we were not sending back
> NAK's on comm errors which partly solves the problem (the app recovers
> after an error) but the errors are still being logged far too often
> (every 20-30 seconds during calls).
>
> The component we are using (TMSComm - this is D1), is reporting 'windows
> errors' which from the Delphi/MS help are described as:
> "Set when a line-status error occurs. Line-status errors are
> CE_FRAME, CE_OVERRUN, and CE_RXPARITY. "
>
> Weird thing is that the errors occur everytime on a Win95 laptop we have
> here (and the clients Win95 machines) but not the Win98 machines that we
> have tried (with the same modem init strings, port settings etc).
>
> I am still doing some experimentation but I am starting to suspect that
> something was broken in the comm driver for Win95 (version 8-24-1996)
> and fixed in the Win98's comm driver (dated 4-10-1998). Somewhat
> annoying is that IE5 or something updates the driver again - on my
> machine the driver is dated 5-11-1998.
>
> Anyone else notice anything weird with windows Comm drivers or am I just
> being paranoid?
>
>
> Grant Black
> Software Developer
> SmartMove (NZ) Ltd
> Phone: +64 9 361-0219 extn 719
> Fax : +64 9 361-0211
> Email: [EMAIL PROTECTED]
>
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