>+{ "mov", 2, 0xa0, X, Cpu64, bwlq_Suf|D|W, { Disp64, Acc, 0 } }, One more note: If you change this here, you'll also want to add { "movq", 2, 0xa0, X, Cpu64, bwlq_Suf|D|W, { Disp64, Acc, 0 } }, further down the file. Jan