Hello, * On Sat, May 12, 2018 at 06:43:14PM +0200 Mia Magnusson wrote: > Den Fri, 11 May 2018 14:55:02 +0200 skrev And Fachat <afachat@gmx.de>: > > Am 11. Mai 2018 14:36:55 schrieb Mia Magnusson <mia@plea.se>: [...] > > > Are there any people around who has made the german magazine 64er > > > modification for a 1541 to become a 2031lp? > > > > Yes in fact I have made it. Never had any problems. But the 64er > > modified the ROMs such that they only changed the 1541 IEC routines > > to IEEE, but not all of the ROMs. So it is more of a modified 1541. > > Interesting. I had thought that the ROMs were more or less the same. They are. But as the higher ROM is changed, the entry points into the routines change, too. Thus, $C000-$DFFF also differes whenever an entry point to routines in $E000-$FFFF is referenced. The 64er magazine made sure that the routines stayed at the same place they have in a 1540/1541, so there was no need to modify the $C000-$DFFF ROM. Regards, Spiro. -- Spiro R. Trikaliotis http://www.trikaliotis.net/Received on 2018-05-26 12:00:07
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