| # Pentium Pro possible unit masks | |
| # | |
| name:zero type:mandatory default:0x0 | |
| 0x0 No unit mask | |
| name:mesi type:bitmask default:0x0f | |
| 0x08 (M)odified cache state | |
| 0x04 (E)xclusive cache state | |
| 0x02 (S)hared cache state | |
| 0x01 (I)nvalid cache state | |
| 0x0f All cache states | |
| name:ebl type:exclusive default:0x20 | |
| 0x00 self-generated transactions | |
| 0x20 any transactions |