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Author Topic: Chinese 68060 Rev 6  (Read 24416 times)

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Offline miggy1974

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Re: Chinese 68060 Rev 6
« on: January 23, 2009, 04:59:39 AM »
Hi all fellow amigans, just wondered if you could help me, i have a blizzard 1240 which i converted in to full revision 6 mc68060RC50 everything works as it should but i have replaced the 50mhz crystal with 70 and 80mhz ones trying to experiment but the board will not boot just flashes the amiga power led and resets works fine at 66mhz any ideas why it wont overclock further ?, the 060 is the full rev 6 version as i too bought it from IC china on ebay. I am using 60ns 64mb simm as i cant find any 50ns ram that works, do you know some where that sells that is compatible, also i installed a 3.3 volt fixed voltage regulator could this be the problem because i have heard that more voltage is required for the 060 at faster speeds. finally i have heard people on this forum have clocked 060s rev 6 to 80mhz using 50ns ram, is this correct ?
any help is much appreciated
 

Offline miggy1974

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Re: Chinese 68060 Rev 6
« Reply #1 on: January 23, 2009, 06:07:52 AM »
hi mate, thanks very much for the info, i will try and get 50ns compatible simm you mention on ebay and overclock in small steps to see what my blizzard will actually achieve

Thanks again