Re: Overclocking an Apple ][?

[see_sig_for_valid_email@no.spam (Simon Williams)]

Michael J. Mahon <mjmahon@aol.com> wrote:

> Simon Williams wrote:
> 
> >Michael J. Mahon <mjmahon@aol.com> wrote:
> >
> >> The Apple IIc+ is such a two-domain system, and it alone
> >> offers the possibility of easy overclocking of its "fast"
> >> processor/cache domain.
> >
> >Which brings us back to the original question of what might be wrong
> >with _my_ IIc+... since it seems to function perfectly well aside from
> >the aforementioned lack of speed.
> 
> Hi, Simon!
> 
> This problem is sufficiently exotic that it makes me wonder
> exactly how you know what speed your machine is running
> at.

The short answer is "I don't"  
It seems my method of drag racing the IIc+ against other Apples was a
bit misguided. I had them doing:

10 FOR I = 1 TO 10000 : PRINT I : NEXT

With the result being that the IIc+ was running slightly slower than a
stock IIe. 

> As you probably know, the IIc+ is a Zip Chip "workalike", and
> it can be configured to run at various speeds and to slow down
> for certain slots, speaker, joystick, etc. by a configuration
> utility that usually runs just after ProDOS loads.

Which made me wonder about the validity of my test, so I changed it to:

10 FOR I = 1 TO 10000 : NEXT
20 PRINT CHR$(7)

Without printing to the screen, the IIc+ ran the test considerably
faster than my IIgs (in fast mode), so I can only conclude that a) I've
spent several days worrying about nothing and b) the IIc+ slows down
dramatically when printing text. 

Live and learn, I guess... 
:-|

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