Re: System Bad 01010001

[lyleh888@yahoo.com (Lyle)]

lemonherb1@netscape.net (Herbert Fung) wrote in message news:<434d0987.0208281753.740f4b6f@posting.google.com>...
> "Mark Cummings" <NOTfigjams@primus.com.au> wrote in message news:<3d6cc210_1@news.iprimus.com.au>...
> > If it is a RAM fault, and I suspect it will be by the checkerboard
> > description, the board is certainly fixable.
> 
> This sounds OK
> 
> > I also got my first (and only) ROM-3 that was a no-goer.
> > 
> > The symptoms were:
> > 1. Failed to boot.
> > 2. No Post beep (from the speaker)
> > 3. Random graphics on the screen. (I think they were flickering too, but
> > can't remember for sure)
> 
> Exact symptoms I got.
> 
> > I did not get a System Bad error (or at least could not read the screen to
> > see if there was one)
>  
> I did a OpenApple-Option-Ctrl-Reset to run the self diagnostic and
> immediately it choked out the error.
> 
> > Also because the DRAMs are soldered onto a ROM-3, I would suggest you
> > replace them with IC-Sockets as you go,
> 
> I've considered that at one point. Just curious though, if I replaced
> the onboard RAM with faster memory chips, would it run any better? I
> have some 70ns RAM chips on hand.

Hi,

Super.Info.III v3.1 is a shareware NDA by Jim Lazar (I paid the $15 in
1992) that requires GS/OS System 6.0.  It has a lot of information
regarding different error messages, and much more.  I don't know where
it's available now, or if it is now freeware.  I got the following
information from Super.Info.III.

01010001 Is a ROM test that failed the checksum, and the last 01
indicates the test encountered bad RAM.

A rather cryptic message.

This may not help to get your machine up and running, but might help
get a very useful utility into the hands of some Apple IIers.

Lyle