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From: faheyr@silver.ucs.indiana.edu (Bob Fahey <NECR0SIS>)
Newsgroups: comp.sys.amiga
Subject: 14Mhz hack on a 500?!?!?!??
Message-ID: <60575@iuvax.cs.indiana.edu>
Date: 27 Sep 90 20:01:30 GMT
Sender: news@iuvax.cs.indiana.edu
Reply-To: faheyr@silver.ucs.indiana.edu (Bob Fahey <NECR0SIS>)
Organization: Indiana University, Bloomington
Lines: 24

Hi there.

I tried putting in the 14Mhz hack that people are talking about here, but to 
no avail. I tried tapping the 28Mhz clock, & made a div-by-2 out of a D flip-
flop, but I couldn't get the 14Mhz signal to work. The 7Mhz side continued to
work fine, though. (BTW, it was with a 12Mhz 68000).

Where does one tap the 28Mhz signal? Directly from the crystal? And, does the
div-by-2 need to be synchronous or a-sync? If anyone knows the CORRECT way to
peice one of these 14Mhz-er's together, please mail me! (For example, if you 
know how to build the div-by-2, and where to tap the signal)

If this makes any difference, it is on a Rev. 5 motherboard, with (yikes!) 1.2
kickstart. Will this hack work on a rev. 7?


					Tanx in advance,
					Bob Fahey@silver.ucs.indiana.edu


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