Re: ZIPGS

[Andrew.webber2@btinternet.com (Andrew Webber)]

"Charlie" <charlied@NOSPAMbboard.com> wrote in message news:<acb5a0016fe@enews3.newsguy.com>...
> "Andrew Webber" <andrew.webber2@btinternet.com> wrote in message
> 6b297ed0.0205191041.2247cc39@posting.google.com">news:6b297ed0.0205191041.2247cc39@posting.google.com...
> > I finally got hold of an accelerator for my IIGS, but I recieved it
> > with no instructions. I have looked on the FAQ and got all the dip
> > settings sorted. I am unsure which model ZIP card I have. Its a ZIP GS
> > 1.01 with the following chips:-
> >
> > + Oscillator - 32Mhz. 2 pin type. Based on the FAQ this should be a
> > 8MHz Zip
> > + Largest Chip - 9043 WD4701
> > + WDC W65C816PL-7 (7Mhz?).
> > + 4 Cache banks. TAG 1 = UM62640-70L, DATA 1 = 6264BL-10, TAG 2
> > =6264-70L, DATA 2 = 6264BL-10. Cache size? The system says 16K in the
> > CDA.
> >
> > Is this a 8Mhz/16K Cache model?
> >
> > The problem is that the system hangs every now and then. I thought it
> > might be because its actually a 7Mhz/8k card not an 8Mhz/16K card? The
> > system will work for a relatively long period then it will just stop.
> > This has happened in GS/OS and in a game. I am able to soft reset the
> > machine and all is ok, I don't have to power off, so I don't think its
> > heat related.
> 
> There is a remote possibility that the system hanging problem is being
> caused by a known bug in the ZipGS CDA.  Under certain conditions the CDA
> writes a zero into the wrong memory location, possibly into another program.
> I believe there is more information and a fix in the CSA2 FAQs.
> 
> Charlie

I had a look in the CSA2 and could not see anything on the fixed CDA.
Do you know where to get hold of the new CDA?,FTAs version, or Zippy?
I have looked everywhere but am unable to get a usable version.

> 
> 
> > Also what is the easiest upgrade I can do to this card without
> > involving any major work (I would not trust myself with a soldering
> > iron!). If its chip replacement does anyone now a good source for the
> > right type of cache/processor chips?
> >
> > Thanks for all your help in advance! :-)
> >
> > Andrew