Re: Choplifter, still no go on Apple IIc +

[mdj <mdj.mdj@gmail.com>]

On Jun 20, 7:46 pm, Linards Ticmanis <ticma...@gmx.de> wrote:
> Polymorph wrote:
> > I don't have a //c or //c+, but that image that Bill posted works fine
> > on my ROM03 IIgs, so there must be some incompatibility specific to
> > the //c+ (maybe even the //c?). Do you have problems with any other
> > programs/games on your //c+?
>
> Hmmmm... are there any Soft Switches or hardware registers peculiar to
> the //c+ ? Mabye one of them gets hit by accident in this game?
>
> Or maybe this has to do with interrupts? Interrupts normally occur in a
> //c but not in a //e, right?

I can confirm choplifter works just fine on a ROM04 //c, which pretty
close to a IIc+. Since interrupts are probably disabled during the
game anyway, I'd imagine it's some incompatibility with the
accelerator hardware. I assume you guys are testing this with the
accelerator disabled ?

This is going to one of those problems where finding the culprit is a
bit like looking for a tiny piece of hay in a massive stackful of
needles. The solution once it's found, is probably trivial.

Matt