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- Newsgroups: comp.os.linux
- Path: sparky!uunet!mcsun!Germany.EU.net!Urmel.Informatik.RWTH-Aachen.DE!cip-s02!u31b3hs
- From: u31b3hs@cip-s02.informatik.rwth-aachen.de (Michael Haardt)
- Subject: Re: How to run a second modem on COM3, IRQ5
- Message-ID: <u31b3hs.715505811@cip-s02>
- Sender: news@Urmel.Informatik.RWTH-Aachen.DE (Newsfiles Owner)
- Nntp-Posting-Host: cip-s02
- Organization: Rechnerbetrieb Informatik / RWTH Aachen
- References: <1992Sep2.202602.18765@magnus.acs.ohio-state.edu>
- Date: 3 Sep 92 07:36:51 GMT
- Lines: 24
-
- bjones@magnus.acs.ohio-state.edu (William A Jones) writes:
- >I just obatined a Gateway Telepath modem from a coworker who decided that he
- >didn't want it anymore. So, now I have two high speed modems. But, after
- >reading the documentation, I discovered that the Telepath can be configured
- >to use any of the 4 COM ports as IRQ5. So, what I was hoping to do is
- >keep my current installation (Microsoft Mouse on COM1, IRQ4; modem on
- >COM2, IRQ3) and run the Gateway on COM3 (or COM4) using IRQ5. Is this
- >possible? If so, what changes (I'm sure there are some) would I need to
- >make to the kernel? What else would I have to do to get this to happen?
-
- I use a usual serial card aat COM3 with IRQ 5 without any problems. I
- changed only the interrupt number in the table, somwhere in the kernel
- sources (serial.c?) Anyway, that is all you need to do.
-
- It might be a nice idea to see which device uses which port addresses
- and IRQs during boot, having kind of a unique format like:
-
- ttys? at 0x??? using irq ?
-
- Btw: I can't find any more free interrupts in the range from 0 to 7,
- are there any? Using interrupts from the second irq controller would
- mean that I have to solder something :(
-
- Michael
-