PCI to PCMCIA adapter PC99

External Since: Apr 05, 2004 Posts: 1

I installed a PCI to PCMCIA adapter card into my desktop so I could then use
my wireless card to access my wireless network. I understand that the
adapter I installed is PC99 compliant and that if you have a PC with ISA
slots then the adapter will not work. Does anybody have any insight to this
or what options exist with respect to be able to use this adapter?

External Since: Nov 18, 2003 Posts: 582

On Mon, 5 Apr 2004 15:34:50 -0700, "DBM" <dmargol RemoveThis @netzero.net> wrote:

>I installed a PCI to PCMCIA adapter card into my desktop so I could then use
>my wireless card to access my wireless network. I understand that the
>adapter I installed is PC99 compliant and that if you have a PC with ISA
>slots then the adapter will not work. Does anybody have any insight to this
>or what options exist with respect to be able to use this adapter?

Just a guess, but it's possible the device used on your new adapter card does
"subtractive decode" of PCI address space to determine when it should claim a
transaction.

Most South Bridges include a PCI-to-ISA bridge, and most (if not all) South
Bridges do subtractive decode.

But as you can only have one subtractive-decoding agent on a PCI bus, your
card wouldn't play nice with most (if not all) South Bridges.

Sounds reasonable from here...

/daytripper (...but, otoh, I could be wrong Wink