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Old 09 June 2014, 01:13   #1
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Blizzard 1220 / 4 40Mhz FPU Crystal

Hi i have fitted a MC68882 FN40A FPU to my Blizzard 1220 / 4 card in my amiga 1200. It seems to be running fine at 28Mhz, I am wanting to find the correct oscillator crystal to use the full 40Mhz of the FPU.

I am new to overclocking with crystals but i am guessing i will need a 40Mhz crystal. Will this do the job ? http://www.amazon.co.uk/Crystal-Osci.../dp/B0084ZO3UG

Any advice would be muchly appreciated.

Thanks in advance.
Old 11 June 2014, 23:15   #2
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Should work with 40MHz, maybe 50MHz and more.

But FPU will not provide You much benefits. Probalby You wont see any difference, except benchmarks
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Old 12 June 2014, 00:41   #3
Michael Sykes
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This could be interesting:http://datasheets.chipdb.org...mc68882.pdf
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