Hello,

looks like there is no vrisa device defined in the config file. To 
enable pcmcia support you could try to add the following lines to the 
kernel config file and build a new kernel:

vrisab0 at vrgiu? platform COMPAQ_AERO isaportoffset 0x1000000
isa0    at vrisab0
pcic0   at isa0 port 0x3e0 iomem 0x70000 iosiz 0x4000 irq 0x00090003

Actually I don't know the correct irq value for your device, but it 
seems that it is irq 3 (all devices with a vrc4171 are using that irq. 
The gpio port number is the thing you would have to find out for 
yourself. Look at the verbose output of the kernel.

Greetings
  Markus