Is
case Is:
/*05*/ { "add", FALSE, LONG, op2(Is, A), 0 },
/*15*/ { "adc", FALSE, LONG, op2(Is, A), 0 },
/*1d*/ { "sbb", FALSE, LONG, op2(Is, A), 0 },
/*2d*/ { "sub", FALSE, LONG, op2(Is, A), 0 },
/*3d*/ { "cmp", FALSE, LONG, op2(Is, A), 0 },