[102031] in RedHat Linux List
Re: Newbie Modem Questions
daemon@ATHENA.MIT.EDU (Jan Carlson)
Tue Dec 1 02:02:43 1998
Date: Tue, 01 Dec 1998 01:58:30 -0500
From: Jan Carlson <janc@iname.com>
To: redhat-list@redhat.com
Resent-From: redhat-list@redhat.com
Reply-To: redhat-list@redhat.com
Marshall Dunlap wrote:
> First of all, thanks to those who have helped me so far. I am a newbie as
> we all were once so I am sure you realize how much the help from all you
> Guru's is appreciated.
>
> I am trying to configure an internal Askey 56k (x2) modem. I was told to
> check the IRQ and port settings. My IRQ's are this:
Is the modem PCI or ISA?
Plug and Play?
Winmodem?
Does it have COM, IRQ and disable-PNP jumpers?
Do you have docs for it?
Do the docs/web site say it supports DOS, OS/2, Linux or Unix?
>
>
> 0: 32140 timer
> 1: 388 keyboard
> 2: 0 cascade
> 3: 17 aic7xxx
> 4: 1 + rtc
> 12: 0 PS/2 mouse
> 13: 1 math error
> 14: 20768 + ide0
> 15: 0 + ide1
Here are the standard PC serial port assignments:
COM1 io 0x3F8 irq 4
COM2 io 0x2F8 irq 3
COM3 io 0x3E8 irq 4
COM4 io 0x2E8 irq 3
aic7xxx is a scsi controler - can you switch that to 10 or 11,
to free up irq3?
If so you could configure the modem for COM2 or COM4,
after disabling COM2 and COM4 in the machine's BIOS.
Right now, COM2 may be enabled - it should be disabled in the BIOS,
unless you are using the builtin COM2 for something.
>
>
> I understand the timer, keyboard, cascade, PS/2 mouse and I think the ide0
> and 1 are the two hard drives. I don't know what 17 aic7xxx is but I think
> it is our SCSI adapter. We also have a Kingston NIC and a Seagate tape
> drive which I will also need to configure. I also want to RAID (mirror)
> the two hard drives but first things first so back to the modem.
>
> Obviously I have a lot of IRQ's to choose from but I didn't want to pick
> one for the modem if one of the above says it already sees the modem. Does
> it?
It is finding something at IRQ3 and4, and the io port 2f8 = com2,
which could be the modem, or the builtin com2. Check the bios,
and see what the modem jumpers are set for.
>
>
> My IO port readings are as follows:
>
> 0000-001f : dma1
> 0020-001f : pic1
> 0040-005f : timer
> 0040-006f : keyboard
> 0070-007f : rtc
> 00a0-00bf : pic2
> 00c0-00df : dma2
> 00f0-00ff : npu
> 0170-0177 : ide1
> 01f0-17f7 : ide0
> 02f8-02ff : serial (auto)
> 0376-0376 : ide1
> 03c0-03df : vga+
> 03f0-03f5 : floppy
> 03f6-03f6 : ide0
> 03f7-03f7 : floppy DIR
> e800-e8be : aic7xxx
> f000-f007 : IDE DMA
> f008-f00f : IDE DMA
>
> My question here is, how can I tell from the above which COM ports are
> being used? Once I know that I can ln -s /dev/cauX/dev/modem where X is 0
> if it is COM 1 and 1 if it is COM 2. Then I can do cu -l/dev/modem -s
> 38400. From there I am going to use UUCP for connection to another UNIX
> box. I used RPM to install that and my books tell me how to write the
> scripts for it.
Linuxconf can also set up uucp scripts for you...
>
>
> Thanks in advance,
>
> Marshall
--
Jan Carlson
janc@iname.com Scarborough, Ontario, Canada
Mailed with Netscape 4.5 on Red Hat Linux 5.2
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