Path: utzoo!attcan!uunet!know!zaphod.mps.ohio-state.edu!uwm.edu!bionet!agate!ucbvax!gnh-applesauce.cts.com!flee From: flee@gnh-applesauce.cts.com (FRANK LEE) Newsgroups: comp.sys.apple2 Subject: Re: Posting a series of questions for a friend. Message-ID: <0093E3C8835AD980.00000111@dcs.simpact.com> Date: 16 Oct 90 15:55:09 GMT Sender: daemon@ucbvax.BERKELEY.EDU Organization: The Internet Lines: 15 X-Unparsable-Date: Sat Oct 13 90 at 08:43:10 (EDT) Even easier than that! Assume s is the slot with the expansion rom. Go into the Monitor (CALL-151 from AppleSoft) and type: CFFF Cs00 C800LLLLLL And that's it!! No messy asm. The 6502 *doesn't* have to be executing the code on the expansion card for the expansin rom to be activated. All you have to do is get the addresses CFFF and Csxx on the 6502 address bus, in that order, for it to be toggled, and what more convenient way can you do that other than thru the Monitor? INET: flee@gnh-applesauce.cts.com UUCP: crash!pnet01!gnh-applesauce!flee ARPA: crash!pnet01!gnh-applesauce!flee@nosc.mil