Re: IIGS hardware questions

[schultp@aa.wl.com (Paul Schultz)]

Chris Deschu (cdeschu@nyx10.cs.du.edu) wrote:
: Hello,

: 	Last question. I'm trying to squeeze just a little more out
: of my TWGS. I've done all the cache RAM, GAL, etc upgrades, but I
: think I got a sub standard CPU from WDC. It crashes randomly, every
: once in awhile, if I go 10mhz or above, more often as you increase
: the clock rate above 10mhz. I was wondering, does anyone sell like
: a clip or clamp on heat sink for chips of the type used for the
: 65816 CPU which is used in TWGS or Zips? Thanks!

I have a ROM 01 and a ZipGS and can't get mine above 10.5 MHz. My
shmoo plot which came with my 65816 shows that it should be easily
stable at 12 MHz. I wonder if it isn't the CPU but rather the fact
that we both have ROM 01 boards? Maybe there is more 'noise' with
our motherboards? Wait, this could be an explanation for the ZipGS
flakiness but I just remembered that the TWGS is not a 'low' power
board and can withstand noise much better that the Zip. Oh well, I
still would like to hear how your speed upgrade turns out!

Paul Schultz
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