Instruction set#21 (CMOV) has been dissociated from Chip family#123 (AMD K8 - Opteron Gen 2) by CarlosS.M.

Instruction set#21 (CMOV) has been associated to Chip family#266 (M2 - 6x86MX/MII) by CarlosS.M.

Instruction set#21 (CMOV) has been associated to Chip family#123 (K8 - Opteron Gen 2) by Rigo