Article View: comp.windows.ms.programmer
Article #64Windows and high (>19.2K) baud rates
From: Courtney Meissen
Date: Sat, 25 Jul 1992 23:08
Date: Sat, 25 Jul 1992 23:08
29 lines
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1489 bytes
Questions on Serial communications from Windows:
1) Standard Windows API's don't accept baud rates higher than 19200
(API's like BuildCommDCB(), SetCommState()).
Is there a workaround from Windows?
What are the baud rate indices in the 3.1 Windows.h (CBR_*) for?
They are not used by any of the sample code in the 3.1 SDK.
If I ignore the API's and set up the DCB myself, SetCommState
still fails (don't know what the error codes mean, this one
returns -5).
I would be willing to talk to the port directly, but I see that
the Dos int $14 functions only document a maximum baud of 19200
(int $14, function 4 - Extended initialize comm port).
Is there an inherent limit of 19200 with Windows since it is built
on top of Dos?
Are there any substitute comm.drv drivers for Windows that would
support higher baud rates?
Please help!!
--
Courtney Meissen Microtek Development Systems Division
courtney@data.rain.com 3300 NW 211th Terrace
uunet!intelhf!percy!data!courtney Hillsboro, OR 97124 (503)645-7333x446
"There's a light at the end of the tunnel.. I hope it ain't no train."
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Path: arc1-ca.pugleaf.net!sparky!uunet!psgrain!percy!data!courtney From: courtney@data.rain.com (Courtney Meissen) Newsgroups: comp.windows.ms.programmer Subject: Windows and high (>19.2K) baud rates Message-ID: <698@data.rain.com> Date: 25 Jul 92 23:08:28 GMT Organization: Microtek DSD, Hillsboro, OR Lines: 29