Re: Choplifter, still no go on Apple IIc +

[Polymorph <polymorph69@hotmail.com>]

On Jun 21, 2:00 pm, mdj <mdj....@gmail.com> wrote:
> 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

Matt,

I ran Choplifter on my ROM03 IIgs with a Zip GSX installed - but with
the control panel speed set to "normal" (ie. 1Mhz). I don't know if
this has any relevance to the //c+ though? I thought it might, as
isn't the //c+ accelerated by an onboard ZIP chip? I can try running
it with the Zip GSX enabled, however, it will be pretty freaky trying
to play the game running at 8Mhz.  ;-)

As a side note: I'd never even heard of a //c+ until last year when I
returned to toying with my A2 after 15 years (I don't think the //c+
ever made into Australia, except maybe via direct individual
imports?).

Anyway, over to you guys with the //c+ 's... hope you get it sorted
out.  :-)

cheers,
-p