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- Newsgroups: comp.os.msdos.programmer
- Path: 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
-
-
- 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.
-