Path: utzoo!attcan!uunet!cs.utexas.edu!usc!apple!agate!ucbvax!pro-generic.cts.COM!ericmcg
From: ericmcg@pro-generic.cts.COM (Eric Mcgillicuddy)
Newsgroups: comp.sys.apple
Subject: 6V power
Message-ID: <170.infoapple.net@pro-generic>
Date: 22 Nov 89 08:23:41 GMT
Sender: daemon@ucbvax.BERKELEY.EDU
Organization: The Internet
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The power supply has a 12V line in addition to +-5V lines. I have a //c so I
don't know if it comes to the slots, I assume it does. (STD cards support it
so one assumes Apple does) Two resistors of equal value can be used as a
voltage divider, one between ground and Vdd and the other between Vdd and
+12V. The 65816 require 4mA/MHz, so 40mA are required for 10Mhz. The resistors
shoould be fairly small around 150 ohms to supply the current. Also the power
trace needs to be cut on the card.

I take no responsibility for any damages that may result from implimenting
this information. I personally do not think it is worth voiding the warranty
for 15-20% increase in speed. 

BTW make sure you have a good fan, the heat dissipation morre than doubles at
this speed and the chips is more susceptible to heat variations when 'pushed'.