Re: More //c woes...

["Frank Townsend" <ftownsen@iamdigex.net>]

Just out of interest, I tried to enter the self-test on an original ROM
(PEEK(64447) = 255) Apple IIc.

The result is a changing screen pattern that seems to cycle as if it were
testing video in some way.  Each cycle lasts a few seconds and a cycle
change is marked by a click from the speaker.  This behavior continues
apparently indefinitely.

I also found a better source for the Stephen Buggie diagnostic software
review (Parts I and II) at

>
http://ground.ecn.uiowa.edu/apple2/Collections/Buggie/



"Frank Townsend" <ftownsen@iamdigex.net> wrote in message
news:DaBQ8.7649$ua4.6269@nwrddc03.gnilink.net...
> To enter the self-test, you must hold down both the open apple and closed
> apple keys while powering on the IIc.
>
> If the self-test ROM is present, a checkerboard pattern appears on the
> screen which changes slightly every few seconds.  Then the checkerboard
> cycles more rapidly 5 or 6 times with the same number of beeps.  If all
> tests are passed, the checkerboard display is replaced by the words
"SYSTEM
> OK" on a blank screen.  If not, error messages are displayed which can
> identify the location of defective RAM.
>
> A nice summary by Stephen Buggie of that and other diagnostic software may
> be found at
>
>
>http://www.apple2.org.za/gswv/gsezine/GS.WorldView/v1996/Oct/BUGGIE.PART2.t
> xt
>
> "O Aaland" <oaaland@aol.com> wrote in message
> 20020620200835.06700.00000007@mb-fm.aol.com">news:20020620200835.06700.00000007@mb-fm.aol.com...
> >
> > If you have a IIc that supports a 3.5 drive, any one except the earliest
> > version, you can run the built in diagnostics. It is posible that you
have
> a
> > defective memory chip that causes problems when you try to use that area
> of
> > memory.
> >
> > Hold down the option (closed apple) key while turning on the computer to
> run
> > the dianostics.
>
>