Re: Overclocking an Apple ][?

["Bill Garber" <willy46pa@comcast DOT net>]

"Simon Williams" <see_sig_for_valid_email@no.spam> wrote in
message
1gdfoll.jjgr3rw4fe6N%see_sig_for_valid_email@no.spam">news:1gdfoll.jjgr3rw4fe6N%see_sig_for_valid_email@no.spam...
: 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...
: :-|

A much better and sensible test, which proves speed
each and everytime for me is: Run Ms.Pacman and observe
the travel speed of the ghosts as you attempt to get
away from them. You'll know whether it's running at
1 MHz or 4 MHz in a flash.  8o)

Bill @ GarberStreet Enterprizez };-)
Web Site - http://garberstreet.netfirms.com
Email - willy46pa @ comcast DOT net
Change DOT to a dot to contact me



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