In a message dated 97-10-30 19:57:06 EST, you write: > > Once I have _OP1 loaded with user input how do I check the sign. Is this > correct: > > ld hl,_OP1 > bit 0,hl ^^^^^^^^ There's a problem there. It should be (hl) > jr nz,Neg ;is it nz or z? ^^^^^^^^^ That's right > > Pos: > > ;code > > Neg: > > ;code > > TIA, > Andres Garcia > > That works, as long as you change that one line I marked.