This card uses the Intersil ISL37300P chipset. It is a PRISM 2.5 implimentation and does not require an external firmware. It works out of the box with the orinoco_cs kernel module.
PDF for the Intersil ISL37300P WLAN PCCard reference design.
Note that Intersil sold it's Wireless Networking Product Group to GlobespanVirata, which has since been bought by Conexant.
The original PDF data sheet is no longer available from Intersil, though ChipDocs will sell you one.
Reference drivers for the Prism 2.5 chipset can be downloaded from HPC Factor
kernel: cs: memory probe 0xe0200000-0xe02fffff: excluding 0xe0200000-0xe020ff cardmgr[3920]: socket 0: ISL37300P kernel: orinoco 0.15rc2 (David Gibson <hermes@gibson.dropbear.id.au>, Pavel R kernel: orinoco_cs 0.15rc2 (David Gibson <hermes@gibson.dropbear.id.au>, Pave kernel: eth3: Hardware identity 800c:0000:0001:0000 kernel: eth3: Station identity 001f:0004:0001:0003 kernel: eth3: Firmware determined as Intersil 1.3.4 kernel: eth3: Ad-hoc demo mode supported kernel: eth3: IEEE standard IBSS ad-hoc mode supported kernel: eth3: WEP supported, 104-bit key kernel: eth3: MAC address 00:02:DD:32:29:09 kernel: eth3: Station name "Prism I" kernel: eth3: ready kernel: eth3: index 0x01: Vcc 3.3, irq 3, io 0xa080-0xa0bf cardmgr[3920]: executing: './network start eth3 2>&1' cardmgr[3920]: + Fill with your own settings... cardmgr[3920]: + iwconfig eth3 mode Managed cardmgr[3920]: + Debian network setup cardmgr[3920]: + /sbin/ifup eth3
# cardctl ident Socket 0: product info: "PCMCIA", "11M WLAN Card v2.5", "ISL37300P", "RevA" manfid: 0x0274, 0x1612 function: 6 (network) # cardctl info PRODID_1="PCMCIA" PRODID_2="11M WLAN Card v2.5" PRODID_3="ISL37300P" PRODID_4="RevA" MANFID=0274,1612 FUNCID=6 # cardctl status Socket 0: 3.3V 16-bit PC Card function 0: [ready] # cardctl config Socket 0: Vcc 0.2V Vpp1 99.2V Vpp2 109051904.0V interface type is irq 3 [exclusive] [level] function 0: config base 0x0001 option 0x00 io 0xa080-0xa0bf [16bit]