Hello Nick,
On Tue, 29 Jan 2002 ncoplin@orbeng.com wrote:
> The C64 cartridge is indeed the one I got late last year. It was made by
> HESware. I modified the code and installed the ROMs into a SuperGames cart
> to allow it to boot in either EXROM or in Ultimax mode should the C64 have a
> bad ROM.
What was the code you added? Just a simple $100-$1ff memory test and
then a jump to ($8000), where the cartridge would also be mapped? I
guess the cartridge will then complain about the KERNAL and BASIC ROMs
and any RAM above $1000, as they are not available in the UltiMax
configuration. There are 1014 $aa bytes at the end of the 8k ROM,
which is pretty much space for additions.
Marko
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