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Date: Tue, 8 May 2001 08:41:45 +0200
From: Jamie Lokier <lm@tantalophile.demon.co.uk>
To: Don Pearsall <donpearsall@home.com>
Cc: discuss@linmodems.org
Subject: Re: Can a PCI Winmodem work in DOS?
Message-ID: <20010508084145.A17720@pcep-jamie.cern.ch>
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In-Reply-To: <053401c0d76f$c8bf5d20$c4980c41@mshome.net>; from donpearsall@home.com on Mon, May 07, 2001 at 08:34:27PM -0700

Don Pearsall wrote:
> I am researching ways that we can keep our legacy shipping application alive
> now that new PCs will be using PCI busses and no slots will be ISA. So far,
> I have been unable to locate any PCI hardware or software modems that will
> work in a native DOS environment. Some will work in a DOS window under
> Windows, but not DOS.
> 
> Does anyone know of a way to get PCI winmodems working with DOS, the same
> way (or ANY way) that the Linux world has been able to?

There are some PCI modems that are not winmodems -- they pretend to be a
serial port just like the old ISA modems, although the I/O port
addresses aren't the standard ISA ones.

You might have more luck with these.  Provided either your BIOS will
enable the PCI device, or you can find a DOS program that enables PCI
devices generically.

There's a list of some known PCI serial port modems in the Linux kernel
source, in drivers/char/serial.c.  I see there things like "3Com US
Robotics 56k Voice Internal PCI modem 5610", "Rastel 2 port modem",
"Elsa model 56k PCI Modem", but those are just the ones that need
special entries in the table.  Plenty more generic PCI modems are
detected.

Of course you can always just use the PC's serial port and an external
modem if you have one.

-- Jamie