Window attribute masks define memory or I/O window configurations. The following table shows the defined window attribute masks.
Attribute mask |
Attribute meaning |
| WIN_ATTR_IO_SPACE | 1 = I/O window; 0 = memory window |
| WIN_ATTR_ATTRIBUTE | 1 = attribute; 0 = common |
| WIN_ATTR_ENABLED | 1 = window enabled; 0 = window disabled |
| WIN_ATTR_16BIT | 1 = 16 bit; 0 = 8 bit |
| WIN_ATTR_PAGED | 1 = size is 16 KB multiple |
| WIN_ATTR_SHARED | 1 = shared memory request |
| WIN_ATTR_FIRST_SHARED | 1 = first shared request |
| WIN_ATTR_OFFSETS_SIZED | Card offsets window sized |
| WIN_ATTR_ACCESS_SPEED_VALID | Causes window’s access speed to change |