Re: ZIPGS

["Bryan Parkoff" <BParkoff@satx.rr.com>]

    Version 1.01 and Version 1.02 are the same except 1.02 has some
additional resistance, capicator and other parts.  I do not recommend to use
solder that it can damage your card easily.  You can only be able to add and
remove parts such as chip socket.

> + Oscillator - 32Mhz. 2 pin type. Based on the FAQ this should be a
> 8MHz Zip

    You can change oscillator chip with any range of MHz that will not
affect ZipGS card.  If you use the wrong type that FAQ does not recommend,
of course, it can damage ZipGS card.

> + Largest Chip - 9043 WD4701
> + WDC W65C816PL-7 (7Mhz?).
    You will need to replace WDC from 7MHz to 14MHz in order to allow ZipGS
to support up to 16MHz.

> + 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
    It does not matter that ZipGS can accept 16K, 32K and 64K cache unless
you use the proper type of memory chip.  I believe that narrow chip is
better than width chip, but you will need the special adapter socket that
will plug into width socket before narrow chip can be plugged into adapter.

> CDA.
>
> Is this a 8Mhz/16K Cache model?
    I am not sure about the model, but someone will be able to assist you in
the newsgroups.



>
> 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.
>
> 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
>