seemingly inexplicable things like that happen fairly often on TI's hardware, and, like art said, usually the only way to fix it is by resetting things. if even overwriting the operating system doesn't do anything, though, you should post about the issue somewhere. there isn't much 68k activity around here, but someone might be able to help you out all the same.

as for calculators, i like the prizm much more, because of how open it is to writing programs. if you are going to be using it only as a device for playing games, though, then an nspire, with it's larger available library, is probably the better option.

it's always wonderful to see more z80 activity around here =).
what other details can you give us about the game. have you written any code yet?

WOOOO
this will Definitely bring more people to the prizm, and i bet we'll be seeing much more C activity because of it as well.

there isn't really any precedent, so do what you like. it would probably be less confusing to have one thread, though.

=D my brothers and i used to wear our thumbs raw in SSB N64 tournaments
those hard plastic analogue sticks are rough.

when working with a big project, planning things out beforehand will almost always save you having to rewrite everything once or twice. also, saving fun bits like titlescreens for last and getting main game engines out of the way first will help to keep you motivated. however, too much planning things out and not enough actually writing will demotivate as well, as it pushes back the yielding of visible results. it's a difficult thing to balance, which is why so many projects get dropped.

that along with some "prevent more than three ratings per half hour" rule or something like that would be helpful. i have no clues if something like that is even feasible, though, so i suppose it goes on the stack of ideas along with the 10% rule for spam.

they are both things that can be useful but can also be taken advantage of far too easily.