Posted By
gpz
on 2025-05-17
19:17:28
|  Re: "Speedy" cartridge info wanted
First - please lets not get into discussing how useless this cartridge is or how pointless it is in emulation - i am well aware of that  For choosing which cartridges to include in VICE, all that matters is that they existed "in the wild" (usually with a loose definition of "3 copies" - if this was really a prototype and noone actually had one we can stop right here - but do we actually know this is the case?).
I am just looking at it (again) because it is the last cartridge type we do not emulate yet - and because it is so obscurely implemented, which is always a challenge to make work in the emulator.
That said, i also believe that those schematics are not 100% correct - i can tell what it wants to do in principle, but when looking at the details, some things don't match up. Hence the question for someone who owns this or at least has seen it maybe
And then there is the ROM dump... which doesn't make sense to me either, when trying to match it against the supposed/guessed working of the hardware (but this might be easier to figure out for someone who is more familiar with the plus4 ROMs and banking things) |
