$PROCESSOR ( 9F0104 ) PUBLIC _get_ei ; ; PSWのEIを読み出します。 ; ROM_CODE CSEG BASE _get_ei: set1 CY and1 CY,PSW.7 ; check IE bit. if 0, all interrupts are disabled. bnc $ie_dis mov C,#01h ret ie_dis: mov C,#00h ret end