Bitfields for Card Services Request Window attributes |
Bit | Description |
---|---|
0 |
I/O window instead of memory window |
1 |
attribute memory instead of normal memory (16-bit PC Cards only) |
2 |
window enabled |
3 |
16-bit data path instead of 8-bit path (16-bit PC Cards only, v2.10+) (ignored if bit 9 set) |
4 |
size is given in 16K pages (invalid for CardBus PC Cards) |
5 |
shared (invalid for CardBus) |
6 |
first shared (invalid for CardBus) |
7 |
"CS_BindingSpecific" (memory window only) |
8 |
card offsets are window-size granular (16-bit PC Card memory window) |
9 |
32-bit data path (CardBus only) |
10 |
reserved (0) |
12 - 11 |
prefetch/cache 00 neither prefetchable nor cacheable 01 prefetchable but not cacheable 10 prefetchable and cachable 11 reserved |
15 - 13 |
decoded base address register number (CardBus only) |
See Also: |