You can view the pinout here:

http://sunsite.tut.fi/hwb/co_Pcmcia.html

Notably, there are no serial lines.  The PCMCIA is essentially a 16 bit
data bus that's very similar to ISA.  The major differences allow for
hot-swapping, automatic card identification, and IIRC allows the OS to
change the I/O space and IRQ usage of the card itself.

I suspect you'll find that your old modem card has or emulates a generic
16550 UART.  You need to determine if it uses a fixed I/O address, or if
it's configurable.  If it's fixed you may have luck just talking
directly to the 16550.  If it's configurable, there may be a default and
you can simply talk to it.  Worst case you'll have to initialize the
card and change those values every time you power up, and it won't be a
16550 compatible chip.

However, the only experience I have with these cards is getting them to
work with DOS machines, so I don't have the in-depth experience you will
need to solve your problem - I could be wrong on the above information.

Good luck!

-Adam

Justin Grimm wrote:

>Hi All
>I would like to use an old pcmcia modem I have to connect to a pic. The pic
>will use the modem to dial a phone number. I have this already working with
>a normal serial modem but would prefer to use the pc card because of its
>size.
>
>Does anyone know what pin numbers to use on the card or how to communicate
>with the card at all? I have done a small search and come up with some
>standards that are gobblygook to me.
>
>Any ideas?
>
>Thanks
>Justin.
>
>--
>http://www.piclist.com hint: The PICList is archived three different
>ways.  See http://www.piclist.com/#archives for details.
>
>
>
>
>

--
http://www.piclist.com hint: The PICList is archived three different
ways.  See http://www.piclist.com/#archives for details.