Dear Samuel,
Well, I looked through our documentation archive here at work, and
only came up with one manual for a Cardinal Modem - but not the
one you describe (it was for a 2400bps modem).
However, I've found myself in your position several times - having an
internal modem with unknown jumpers. At least yours has
jumpers, and is not Plug-n-PRAY, so rejoice! You've got a fighting
chance.
You should be able to map out which jumpers mean what by a
combination of trial and error, and a lot of restarts of the computer.
Start with one jumper at a time, and set it on the first pair of pins.
Disable the other COM ports, if you can, and start the computer,
staying in DOS. If it starts, then run Microsoft Diagnostics
(MSD.EXE, a program that comes with DOS versions >3.3, IIRC) or
similar tool, which can report on the com ports that it detects. By
restarting again and again, and changing the jumpers, and
checking with MSD, you can determine when you hit a
combination of jumpers that is recognized by the diagnostics as
being a COM port. Keep careful notes as you work.
If asked to hazard a guess, though, I'm going to guess that the
jumpering works as follows:
> 6 . . 2
> 5 . . 5
> 4 . . 3
> 3 . . 4
These would set the IRQ, I think - the IRQ's are the number on
the right.
> 2 . . no number
> 1 . . no number
These would set the address of the card - I'm going to guess that
you use set 1 for COM1&2 and set 2 for 3&4 OR that set 1 is
COM1&3, and set 2 is for COM2&4. I've seen both on modem
cards before.
Hope this helps,
Anthony J. Albert
On 13 Oct 99, at 13:08, Samuel W. Heywood wrote:
> Hi Folks,
>
> I have recently acquired a Cardinal Technologies 14400 modem, model
> number 10750. I have no documentation. Cardinal Technologies went
> out of business a couple of years ago and of course no longer provides
> technical support. I should like to configure this modem so that it is
> set up for COM port 2, IRQ 3. The modem has 12 jumper pins arranged
> in six rows of a column of two. The numbering of the pins does not
> seem to provide any clues as to which pins are for what. It looks
> like this:
>
> 6 . . 2
> 5 . . 5
> 4 . . 3
> 3 . . 4
> 2 . . no number
> 1 . . no number
<SNIP>
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Systems and Software Support Specialist Postmaster
Computer Services - University of Maine, Presque Isle
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