TWGS upgrade, was (none)

[voss@i40s16.ira.uka.de (Stefan Voss)]

In article <15284.9306080317@hercules.cs.uregina.ca>, yuen@CS.UREGINA.CA writes:
|> 	
|> 	I am the owner of a (a little slow) 7Mhz Transwarp GS. Does anyone
|> 	out there modify the card to accomdate faster chips ? 
|> 	I heard guys saying that they upgraded their TWGS to 8, 9 even 12 Mhz.
|> 	Is it save to do so? And will it cause any compatibility problem?
|> 	Anyone please shard some light on the subject.
|> 	

If you have the lastest TWGS ROMs (1.8), you can to up to ca. 12-12.5 MHz by
replacing the CPU on your TWGS with a 14-MHz-65816 from the Western Design Center.

Of course, you also have to replace the oscillator with a faster one. 
You need a 4*x MHz oscillator to archive a TWGS speed of x MHz. e.g., I use a
50MHz oscillator which results in a TWGS running at 12.5 MHz.

I haven't had any problems, yet. In fact, despite the faster speed I have the
impression that my TWGS becomes less hot, because the new CPU eats less power.
(I haven't measured that.)

That's it for now.

Stefan Voss
(voss@ira.uka.de)