略語大辞典 [C] 19 EM emulate processor extension エミュレート プロセッサ拡張. emulate processor extension; a MSW(machine status word) bit function of a 80*86 CPU; causes a processor extension not present exception on ESC instructions to allow emulating a processor extension; [C]. 丸善「略語大辞典」JLogosID : 11873554