Bitfields for PCMCIA window capabilities:
Bit(s)	Description	)
 0	programmable base address
 1	programmable window size
 2	window disable/enable supported
 3	8-data bus
 4	16-data bus
 5	base address alignment on size boundary required
 6	power-of-two size granularity
---memory windows---
 7	card offset must be aligned on size boundary
 8	paging hardware available
 9	paging hardware shared
 10	page disable/enable supported
 11-15	reserved (0)
---I/O windows---
 7-15	reserved (0)