1 # Pentium II possible unit masks 2 # 3 name:zero type:mandatory default:0x0 4 0x0 No unit mask 5 name:mesi type:bitmask default:0x0f 6 0x08 (M)odified cache state 7 0x04 (E)xclusive cache state 8 0x02 (S)hared cache state 9 0x01 (I)nvalid cache state 10 0x0f All cache states 11 name:ebl type:exclusive default:0x20 12 0x00 self-generated transactions 13 0x20 any transactions 14 name:mmx_uops type:mandatory default:0xf 15 0x0f mandatory 16 name:mmx_instr_type_exec type:bitmask default:0x3f 17 0x01 MMX packed multiplies 18 0x02 MMX packed shifts 19 0x04 MMX pack operations 20 0x08 MMX unpack operations 21 0x10 MMX packed logical 22 0x20 MMX packed arithmetic 23 0x3f all of the above 24 name:mmx_trans type:exclusive default:0x0 25 0x00 MMX->float operations 26 0x01 float->MMX operations 27 name:seg_rename type:bitmask default:0xf 28 0x1 ES register 29 0x2 DS register 30 0x4 FS register 31 # IA manual says this is actually FS again - no mention in errata 32 # but test show that is really a typo error from IA manual 33 0x8 GS register 34 0xf ES, DS, FS, GS registers 35