"Brian Bagnall" < XXXX@XXXXX.COM > writes:
IIRC, Donkey Kong and Dig Dub are 1+5 games, but Ms Pacman, Pole Position
and Jungle Hunt are 3+5 games. I don't know why Atari chose to map two
games differently. Try to set VIC into unexpanded mode, and attach
cartridge images (you can determine on the file name which part goes
where) followed by soft reset or SYS 64802.
Alternatively, you can still load the images into an expanded VIC, but
since the games were written for "standard", unexpanded setup and these
programmers didn't bother to adjust for other memory models, you have to
issue these POKEs before loading:
POKE 648,30:POKE 36866,150:POKE 36869,240:POKE 44,16:POKE 4096,0: \ cont
This long line of POKEs will set the VIC memory map into an unexpanded
mode, let alone the video matrix now resides in the middle of BASIC RAM,
so a long BASIC program would be damaged somewhere in the middle by what
happens on the screen. In the case of cartridges, this is not an issue
as the code is located far away from the unexpanded work area.
In a few cases, you might come across a copy protected cartridge, i.e.
one which tries to overwrite itself. I think by attaching cartridge
images rather than loading into RAM, you will overcome this defect.
"Please not to close to the hair, finger, clothes to run about the
inside's vehicle, in order to prevent quilt involvement." -- Bit Racer