On 03/03/2015 08:00 PM, William Levak wrote: > On Mon, 2 Mar 2015, Gerrit Heitsch wrote: > >> On 03/02/2015 12:15 PM, Ullrich von Bassewitz wrote: >>> >>> Hi! >>> >>> On Mon, Mar 02, 2015 at 08:39:36AM +0100, Spiro Trikaliotis wrote: >>>> does anyone know if there exists a as complete as possible ROM listing >>>> of the c264 series machines that were actually sold? >>> >>> There was a German ROM listing by Christian Spirin Quintzner(?) for >>> the Plus/4. >>> I'm not at home, so I cannot lookup the correct author and/or title. >>> I've used >>> it as base of some work of mine. >> >> I think I remember that one. I had a ROM-Listing in book form once, >> but it disappeared. The main problem with it was that all addresses >> were decimal while the monitor on the system itself of course used hex. >> >> Also, the one I had was based on KERNAL -04 while -05 was the one you >> wanted to use. >> >> I remember there being a rather simple test to find out if you had a >> -05 ROM, some BASIC command would crash if you didn't. Anyone remember >> details? The differences between -04 and -05 are rather small. > > > peek 65408 > > The answers are 4 and 5, appropriately. The hex bytes in that location ($FF80) are $83, $84 and $85 for the 3 known ROMs. So your peek would need a 'and 127' to give the proper result. But I was more looking for the command sequence that only -05 executes properly. :) Gerrit Message was sent through the cbm-hackers mailing listReceived on 2015-03-03 20:00:41
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