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- Newsgroups: comp.os.linux
- Path: sparky!uunet!usc!zaphod.mps.ohio-state.edu!caen!destroyer!cs.ubc.ca!newsserver.sfu.ca!rchen
- From: rchen@fraser.sfu.ca (Robert Chen)
- Subject: internal modem and serial device driver
- Message-ID: <1992Dec16.230026.9878@sfu.ca>
- Sender: news@sfu.ca
- Organization: Simon Fraser University, Burnaby, B.C., Canada
- Date: Wed, 16 Dec 1992 23:00:26 GMT
- Lines: 32
-
- I have the following setup:
-
- Serial card on COM1 and COM2 (14450s) (mouse and 14.4 modem respectively)
- 2400baud modem on COM3
-
- At bootup, linux only recognises /dev/ttys0 and /dev/ttys1 (COM1 and
- COM2). No mention of ttys2 (the internal modem).
-
- The strange thing is, I can use the 2400 fine to dial in and dial out.
- In fact, I have a 14.4kbps on /dev/ttys1 and I have dialed in from
- home to my 2400 and the out through the 14.4. I am using using the
- new getty_ps which works great for me.
-
- Now for the problem. I have a 9600bps mouse on /dev/ttys0. While
- getty_ps is running (and hence accessing ttys2), my X cursor is jumpy
- when I move the mouse. Since ttys0 and ttys2 share IRQ3, I assume
- that this has something to do with the serial driver (and the fact
- that my modem on ttys2 is not recognised at bootup).
-
- What I would like to be able to do is access all three com ports
- simultaneously. I would rather not move the 2400 baud modem to
- another IRQ (not 5 anyway) because I have an ethernet board using that
- IRQ (and it shouldn't be neccessary since at 2400bps, sharing an IRQ
- shouldn't be a problem).
-
- Can anybody point me to a solution? Is anybody successfully using
- COM1 and COM3 simultaneously? Why is my internal modem not
- recognised?
-
- Any suggestions would be very appreciated.
-
- - Ken
-