The prism54 driver is available in Linux and OpenBSD and requires firmware.
They were solid cards that supported b/g transmission rates with WPA although they tended to run a little hot. Wireless cards tend to be inexpensive and if running FreeBSD is a priority, you should be able to find a compatible card for under 20USD.
pkg search prism54 but it came up nothing.If you have a Windows XP driver for your card, you can also try using ndis(4). See https://www.freebsd.org/doc/en_US.I...config-network-setup.html#config-network-ndis