Daystar 68030/68882 50 mhz

[Dan]

Brian wrote:
I would think they are motorola chips and "Daystar" is just the name of the product.

yes, Daystar was a acceleratorbrand for Mac, they also made really cool multiprocessor powermac-clones later 8-).

Another thing about mac-accelerators, watch out if you want to use parts from 040cards as mac-accelerators manufacturers for a brief period used the internal clockspeed to make it look better compared to pc. So a card advertised as 040-66Mhz or 040-50Mhz was really 040-33Mhz and 040-25Mhz.

[Dan]

jjans wrote:
OK I won the chips, and am awaiting their arrival. The FPU will be no problem from what I understand. I did some digging around, and found I can disable the onboard circuitry for MMU, if the MC68E030 is replaced with a real MC68030. So far so good.

The original CPU is a 40MHZ. (5 volts)

The Daystar is 50 MHZ.       (also 5 volts).

Figure I'll fry anything if I try it?
Should I consider more cooling?
Is the performance increase worth the risk?

Clockspeed is determined by a oscillator isn´t it?
So if you just replace the 030 the 50mhz 030 will just run at 40Mhz, if you want to run it at 50Mhz you will also have to swap the oscillator.
You can´t fry a processor by underclocking it. And as for cooling I only know one 030 accelerator that needed that, the A630 for the really cramped A600.
Running at 50Mhz depends on memspeed but is probably possible. I don´t think that it can damage anything, it just won´t boot up properly if it don´t works as cpu and mem gets out of sync.

So try the new 030 in the A530 and see if it runs at 40 or 50MHz. If you need to swap the oscillator to reach 50Mhz ask again as it probably invovles soldering, maybe one of the real overclockers can answer it.