Re: Replacing 28.6 oscillator with 40 or 35 mhz?

["Bryan Parkoff" <nospam@nospam.com>]

Hello,

>I was wondering if replacement of the original quartz oscillator
> located above the VGC might be useful to increase overall IIgs speed.
> 4 mhz would be an interesting increase. Furthermore 65C816 cpu
> commonly used on IIgs is rated to 4 mhz.
>
> http://lh6.ggpht.com/icoloridellamela/SCnkTsJKvUI/AAAAAAAAAGE/MHcCOgyOEkc/rom0012.jpg?imgmax=912

    Like a hacker?  No, it won't work.  Faster than 28 MHz osc chip will 
fail to refresh all RAM chips.  I can't imagine how RAM chips can be 
replaced to sustain faster speed.  Transwarp GS card or Zip GS card is the 
solution when they have cache.

> The quartz i'm referring to Is located above the VGC but a replacement
> with a faster unit i guess could affect refresh of video signal,
> serial ports funcionality and even smartport. According you might be
> worth a try?

    Yes, all will be affected and cease to function.

Bryan Parkoff