In a message dated 11/18/98 5:22:15 PM, matthews@tkb.att.ne.jp writes: >> What we usely do before calling '_setxxop1' is to store the value into >'a', no ?? > >Yep...right again. setxxop1 takes the acc and puts it in OP1. Yes, thats what setxxop1 does, you've confirmed that, but for this situation isnt a 16-bit one needed... setxxxxop1? =P --Jason K.