[1518] in RedHat Linux List
Re: Adding more serial ports
daemon@ATHENA.MIT.EDU (BORG)
Mon Oct 28 19:53:59 1996
Date: Mon, 28 Oct 1996 16:23:04 -0800
From: BORG <vladimip@iceonline.com>
To: redhat-list@redhat.com
Resent-From: redhat-list@redhat.com
Reply-To: redhat-list@redhat.com
Robert Hart wrote:
>
> Hi
>
> I have noticed a couple of people have had problems with adding serail
> ports above cua1 (ie standard DOS com ports com3 and com4) - problems with
> mouse and modem on cua0 and cua1.
Yes, I did have such a problem, even worse, I couldn't
use cua3 (com4) because my videocard told me it wanted
0x03e8 to be empty otherwise it would complain. :)
My setup is like following:
/dev/cua0, UART: 16550A, Port: 0x03f8, IRQ: 4 (modem #1)
/dev/cua1, UART: 16450, Port: 0x02f8, IRQ: 3 (M$ mouse)
/dev/cua2, UART: 16550A, Port: 0x02e8, IRQ: 5 (Modem #2)
/dev/cua3, UART: unknown, Port: 0x03e8, IRQ: 3 (nothing)
All I had to do was change jumpers on my serial
card accordingly to a little manual that came with it
and set jumpers on my modems accordingly. Took me
a couple of days or so to figure everything out until
I could make all 3 devices work simultaneously
without sharing each other resources and locking up.
Regards,
Vlad
--
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