This was triggered by the "Subject:" question in the dosonly list:

There was a short discussion on this thread lately here on the SurvPC
list.  It appears that IBM's PC-DOS (7 or "2000") indeed provides a
PCMCIA driver.  But someone wrote that this is eating rather a lot of
precious low memory (75 K, IIRR).

At least for the modem-only PC cards there is a simpler, and better
solution.  I found a DOS prog (!) for the (originally all-Win$) laptop's
modem card which is a bit dated (according to the few-days lifespan of
certain technologists), i.e. a 14.4 K "SCM" fax-modem.

When I replaced this modem with a faster one (Psion Dacom Gold card 56K)
the thingy worked with it too - pleasant surprise.

Because it does apparently nothing else than just *setting* the card
modem's address and IRQ, thus no driver at all !

In case of the laptop here, it's set to COM_4, Irq_3, and I can run
any one of the DOS commprogs using it like that.

There's a very short doc with it, in German. I says that port, irq,
slot number [of the PCMCIA card] and something called "Memorywindow"
can be set from the command line.
In any case it checks existing serial ports and whether these are in use,
and then takes the first one which is free, if nothing else is ordered
on the command line.

So apparently, those (modem!) cards are easily software-"switchable".

Only drawback is perhaps that the prog must be run anew everytime before
using it; but that could be as well an effect of using TERMIN.COM for
unloading the packet driver (which is what I'm doing almost always).
[There seem no whatsoever negative effects of running it repeatedly.]

The thingy is called SETMODEM.exe

I found it at the German website of SCM (the name is something *like*
"www.SCM-pc-cards.de") but I cannot find back my note of the precise URL,
sorry !  It's apparently firmware but was free to download, and as far as
I can see there are no restrictions to use it. The better so as it
clearly works with other than SCM modems too.

So I put the original package "DOS-W3XX.ZIP" just up at the download
corner of my www-place. Welcome !

// Heimo Claasen // <hammer at revobild dot net> // Brussels 2000-11-17
The WebPlace of ReRead - and much to read ==> http://www.inti.be/hammer

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