| Bits | Meaning when set |
|---|---|
| 0-7 | 13 (&0D) |
| 8 | map bufferable space (0 is normal, non-bufferable) |
| 9 | map cacheable space (0 is normal, non-cacheable) |
| 16 | to doubly map |
| 17 | access privileges specified |
| 24-27 | access privileges (if bit 17 set) – specified under Page Access. |
| All other bits are reserved, and must be zero | |
Flags are specific to this reason code.