> Surely the DOS error number is stored somewhere in memory. I'd forgotten all this stuff ... a quick Google shows DOS errors are stored in the same place Applesoft errors are, and can be read with a PEEK(222). A table on this page lists the errors: http://www.apple2.org.za/gswv/USA2WUG/FOUNDING.MEMBERS/HOME.PAGES/EDHEL/texts/pokes.html Cheers, Nick.