On Apr 7, 9:19 pm, "John B. Matthews" <nos...@nospam.com> wrote: > Excellent! I use it all the time for exploring and file type editing. > > BTW, what assembler is that? I assembled it with p65, a 65C02 assembler written in Perl. I made some modifications to it; I think the .advancenop directive was one of the things I added.