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Article #3564Serial Port I/O...
From: Ted Halmrast
Date: Tue, 10 Nov 1992 18:09
Date: Tue, 10 Nov 1992 18:09
26 lines
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1637 bytes
I am attempting to write a BBS type of application that needs to access the serial port at 57K baud and the only documentation I seem to possess refers to the BIOS and DOS interface methods which are, of course, unacceptably slow. I have some documentation on how to use the COM1 and COM2 ports beginning at 2F8h and 3F8h but it is lacking. For example, I do not know which bit in which port address to check to determine if the DSR is set, or DTR is set, and so on. If someone could post such information or mail me such information, I would greatly appreciate it. ALSO, if I initialize the UART to 57K baud and someone calls in at another baud, such as 2400, 1200, 9600, 14.4K, does the UART automatically adjust? And if so, is it even necessary to initialize the UART when you only going to be answer the phone (and not calling out)? Thank you. Ted Halmrast halmrast@main.mndly.umn.edu ONE MORE THING... Does anyone know how to access the Clarkson TCP/IP packet drivers from MD- DOS? I am currently on a Novell network with an internet connection and we're using the 8003PKDR drivers on the network.
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Newsgroups: comp.os.msdos.programmer Path: arc1-ca.pugleaf.net!sparky!uunet!think.com!yale.edu!spool.mu.edu!umn.edu!BUS24.mndly.umn.edu!halmrast From: halmrast@main.mndly.umn.edu (Ted Halmrast) Subject: Serial Port I/O... Message-ID: <halmrast.2.721418944@main.mndly.umn.edu> Lines: 26 Sender: news@news2.cis.umn.edu (Usenet News Administration) Nntp-Posting-Host: bus24.mndly.umn.edu Organization: the Minnesota Daily (U of MN Student Newspaper) Date: Tue, 10 Nov 1992 18:09:04 GMT Lines: 26