In article <sheldonCwtLso.279@netcom.com> Sheldon Simms, sheldon@netcom.com writes: > LDY $0 > LDA (R15L),Y ;FETCH INSTR > AND $F ;MASK REG SPECIFICATION Uhhh...either I'm imagining things, or the "#" signs are missing throughout that source posting. I didn't see -any- immediate mode instructions...it actually looks like every "$" should be "#$" (except for the EQUs and the ORG). Dave Lyons Mr Tangent