Apollo 060 fault (A1200)

[PG]

Who is this swedish person?

I am.. :-)

Well, your card is an Apollo 1260 and yes, it has the correct jumper settings...

The fact is that most Apollo:s are not stable at 50Mhz FSB, thats why for example eyetech always used the 040 position for the FSB (FSB =1/2x cpu clock), regardless what cpu they used, 040 or 060.

If you want to try and overclock your card to 80Mhz, you could do so by simply changing the crystal oscillator.
However, unless you have the latest MC68060 cpu, im afraid your card wont run.
Always use a cooler when overclocking!

The other option you have is to try the 060 setting (FSB = cpu clock) but you MUST then also move one soldered resistor on the board from GND (where it is now) to the CLKEN position.
If your card still wont run at 50Mhz, now try a 40 MHZ crystal oscillator and your card will run fine.
Of course, you will now UNDERclock your cpu but will have a faster FSB.
I havent done any overall performance test because i have MC68060 cpu:s, and they run fine at 80Mhz with 40Mhz FSB.. :-)

If you or anyone else need a cooling solution you could contact me.
I have new coolers for both desktop and tower versions.
I will soon also have the PLD:s as spare part (Mach 210, 130/31) in stock.

[PG]

"Hello there PG!  Thanks for replying.  But now I'm really confused...

The manual says it should be on the 060 setting but you say it should be on 040?  So do I have a 50MHz processor or a 25MHz processor?  It seems cheeky that they claim it's a 060/50 if it's the latter."

Your cpu runs at 50Mhz internally but with 25Mhz external speed.
I agree with you, i dont like it either.
But eyetech wanted to be safe, and used the 040 setting with all cpu:s.
Beside from that, the Apollo is a really good card.

"Also is it not true that the 040/40 uses a 80MHz clock, hence a 40MHz processor speed?  If so a 80MHz clock is surely not overclocking the board."

Its exactly the same thing here, the 040 runs at half speed externally.
I think Motorola could have marked the 68040 cpu 80Mhz instead of 40Mhz.
However, its a different thing with the 060.
Its DESIGNED to run at same speed internally as externally.
It is just the Apollo board that runs the cpu at half speed externally in most cases...

"How about a 66MHz clock, if I can get my hands on one?  And is MC68060 better than XC68060?"

It could work with a good cooler.
You could buy the oscillator from me, if you cant find any.
The MC68060 is a better cpu than XC68060 but with amiga accelerators the XC cpu work fine also.

"Also any ideas why benchmark programs seem to crash now?"

It could be that you are using the wrong libs?
You must use the correct Apollo libs, otherwise your card wont run stable.
Dont use Phase5 libs, it wont work.

[PG]

Yes, you must use a cooler if you want to try 66Mhz.
Regarding the Install disk, you have PM.. :-)

[PG]

alexh wrote:

The MC68060 is a better cpu than XC68060 but with amiga accelerators the XC cpu work fine also.

It should be said that there are several revisions of MC68060RC50 chips. If you are considering replacing one you SHOULD only get a revision 6 (denoted by a mask suffix of 1E41J)

Im not sure if thats correct..?
I think all MC68060RC50 comes with 1E41J Mask.
Anyway, besides from that you are correct, thats the best mask.. :-)