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Re: ZIPGS



In article <C122494091151.1@ocean-side.ecore.fnet.org>,
 <Spaceman_Spiff@ocean-side.ecore.fnet.org> wrote:
>
>Can anyone tell me how to upgrade the speed of my ZIPGS?  I have a 7 Mhz ZIPGS
>that has a 28.3 Mhz oscillator.  I changed the oscillator to 36 Mhz thinking
>that the speed would be 9 Mhz.  Instead the card did work at all.  I just got
>junk on the screen when I turned on the computer.  Is there something else
>that needs to be changed along with the oscillator?  PLEASE HELP ME!

Hmm, it sounds like either your 65816 chip can't handle 9mhz speed,
which is possible, since Zip probably tested the chip just to operate
at the speed it was sold at (try 8mhz), or you might have put the
crystal in backwards. I've done this myself, and it fries the crystal.
Make sure the dot or square corner on the crystal (pin 1) is in the
same orientation as the original crystal was installed. This is probably
the top left hand corner, but I'm not positive. If you look at the
socket, there is a notch at one end. Make sure that the dot or square
corner on the crystal is at the same end as the notch in the socket.
Good Luck!

-- 
___________________________________________________________________________
 |___              Chris Deschu                       cdeschu@nyx.cs.du.edu
_|_|con   (610)791-3596   4804 Bowood Street, Center Valley, PA. 18034-9628
:-)|echnologies is IT in the Lehigh Valley for Apple ][ Consulting & Repair