Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!uflorida!haven!umd5!vargish
From: vargish@umd5.umd.edu (Nick Vargish)
Newsgroups: comp.sys.ibm.pc
Subject: Modem Woes
Message-ID: <4608@umd5.umd.edu>
Date: 14 Mar 89 18:35:34 GMT
Reply-To: vargish@umd5.umd.edu (Nick Vargish)
Organization: University of Maryland, College Park
Lines: 47


Hi, I need some help.  I've recently acquired a second-hand modem, and I
can't seem to get the bugger to work.   Here are the details:

The modem:

Type: internal half-card. Hayes-compatible.
Brand name: Datatronics
Speed: 1200 Baud
Important features:

	10 dip switches labeled 1-10.  switches 1, 2, and 10 were on
	when I got it.  The characters 12H05377 are on the switch box,
	with the 12 part closest to switch 10.

	A jumper on the lower edge of the card with two positions
	labeled IRQ4 and IRQ5.  When I got it the jumper was set to
	IRQ4.

My system:

XT clone, 4/8 megahertz switchable (I've only tested the modem at 8 mh).
Phoenix ROM BIOS.

EGA card, or no identifiable pedigree (Taiwanese, I'm pretty sure).
I/O card, with a unused parallel port, and a mouse in the serial port. The
	mouse needs to use COM 1.
Hard Drive controller.
Floppy drive controller.

I have enough slot-space so that I should be able to plug the card into
any unoccupied slot.

The problem:

If the modem doesn't keep the system from booting up, which it has done,
then the mouse driver won't find my mouse, and any communications program
I use hangs my system and I have to do a cold re-boot.

I haven't tried playing with the dip switches... I suspect the jumper is
to allow one to plug the thing into slot 8.


Any help would be very gratefully accepted.

Nick Vargish 
vargish @ umd5.umd.edu