The new 68060 100mhz work on amiga?

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NightShade737 wrote:

It wouldn`t help anyway, as Amiga Accelerators aren`t meant for this high busspeeds. Even if the CPU would manage the 100 MHz the rest of the board won`t even if it is only for the RAM that can`t keep up.

What are you talking about? The bus-speed would be exactly the same as all the other 060s and the board and RAM wouldn't need to 'keep up' anyway as it is pure processor speed. It isn't like putting 30ns RAM in a board that only takes 70...

The Processor gets it's frequency from the Front side bus. The Amiga CPU boards used the same clock for the CPU as they did for the RAM usually a 50MHz clock.

If you put a 100Mhz crystal in there, the CPU and RAM would then run at 100Mhz. The CPU might be able to cope with that frequency, but the ram will fail.

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Karlos wrote:
-edit-

Matt beat me to it :-D

Great minds... etc... ;-)

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NightShade737 wrote:
So 25MHz 040s have the RAM running at 25MHz?

the 25Mhz 040 has a 50Mhz cpu clock :-)

-Edit- The 25Mhz 040 has a 0.5 multiplier :-)

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NightShade737 wrote:
So what is to stop you from using a 2x multiplier on a 50MHz 060 board?

I don't know any 060's that had a multiplier in them and you can't rework the board electronics.

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NightShade737 wrote:
Ah, I assumed they all did as I read the CyberstormPPC has jumpers for multipliers.

Thats because the PPC needs to get it's clock from the bus clock, and it needs multipliers to get from 50Mhz (or probably 60MHz) upto 240Mhz etc