Re: Can anyone help me with TranswarpGS problems?

["Tim Haynes" <timhaynes@no.spam.please.alumni.uwaterloo.ca>]

Hi Dean,

Thanks for pointing me at mouser - they look great!  Nice prices with no
minimum - very sweet.

I'm going to try getting a 48MHz and a 50MHz crystal, on the off-chance that
I can squeeze out 12.5MHz from the TWGS.  What do you think of this line of
crystals?
http://www.mouser.com/index.cfm?handler=displayproduct&&lstdispproductid=563282

They have 48 and 50 MHz versions so I can get one of each.  The one you
pointed out has only 48, but I will go with it if you think the one I found
is no good.

Thanks!
Tim

"Dean Shutt" <junk@punaka.com> wrote in message
l6ohe05g2erlif8csq1ompjm5hi214di6h@4ax.com">news:l6ohe05g2erlif8csq1ompjm5hi214di6h@4ax.com...
> www.mouser.com is a good source.  A 48 Mhz crystal is $1.70 and Mouser
> has no minimum order.  I ordered a number of different frequency
> crystals to test in my Transwarp GS from this source.  The 48 MHz part
> number is 520-TCH4800.
>
> Check the web site for the other speeds available.  They range from 1
> MHz to 66.666 MHz all at the same price.
>
>
>
>
>
> On Sun, 4 Jul 2004 16:17:36 -0400, "Tim Haynes"
> <timhaynes@no.spam.please.alumni.uwaterloo.ca> wrote:
>
> >Thanks to Mark, Glenn, and Wayne for their suggestions regarding
replacing
> >the CPU on my TWGS.  I did the swap today, and have posted some pictures
of
> >the work to my website again (www.csclub.uwaterloo.ca/~tshaynes/TWGS).
The
> >new pictures are dated today (July 4).
> >
> >I had to remove a plastic collar from around the CPU, and I did that with
> >tiny screwdrivers.  after that, replacing the chip was easy.  I
considered
> >drilling a small hole through the bottom and pushing it out, but you can
see
> >that that would be inadvisable as there seem to be some metal contacts on
> >the top of the PCB beneath the socket that are not visible from beneath
the
> >PCB.
> >
> >Anyway, I swapped in the faster CPU and got a clean bootup right away
(even
> >without putting the plastic collar back on the socket!).  The very last
> >picture I posted shows the TWGS booting up minus the collar on the
socket.
> >Heh.
> >
> >So I have it running a continual self-test.  After about 20 minutes, have
> >been getting one freeze-up or another (last time it was socket slowdown
> >test)... before that, it was a lockup on a RAM test).
> >
> >Does anybody know a good source for 50MHz half can crystal?
> >George from Michigan mentioned in email that someone at one point was
> >selling (for $10) gold plated chip/ribbon connectors.  Does the person
who
> >used to make them still come around?  Does anybody remember who that was?
> >Was it Joachim?
> >
> >Thanks again
> >Tim
> >
>