Cyberstorm PPC hardware mod: 060@72MHz/PPC@396MHz

[stachu100]

Done, working stable so far
http://picasaweb.google.com/stacho100/CyberstormPPC06066MHzPPC400MHz#
 
http://www.youtube.com/watch?v=k2Xg7wEvd5c
 
What I must do is to put clean AOS system because my system is very "dirty" over last years :lol:
Once I will do so I will run some benchmarks to see what is the speed increase.
 
And I hope to get x6 multiplier working to break 400MHz

[stachu100]

Thanks All of you for these warm words :-)
 
As 375MHz version processors are rare and expensive I ordered few 604e@350MHz. I'm sure the can work stable @366MHz (5,5x66,667MHz).
But I'm still fighting to buy few 375MHz version.

[stachu100]

Thanks!
Not yet, but OS4 tests will be done as well :-)

[stachu100]

WOW! That's awesome. Was that the same card I sold you a few months back?

No
But your card is in the queue.
Again thanks a lot for this nice deal

[stachu100]

Thanks all of you!
And yes, brown spot under PPC processor means that CPU was overheated (defective fan for example). It should be easy to fix and upgrade at the same time :-)

[stachu100]

I have a Cyberstorm PPC that was converted to 060 by Amiga Center France when the board died... never was told what the problem was just that it would never work with PPC again. The PPC chip was removed from the board. Can the PPC chip be replaced and get working again as a 060/PPC board?

Well, if it was only PPC CPU defective (95% that it was the case) it's possible to put PPC back on your board.
The condition is that solder pads are in good conditions: no missing pads, no scratches on soldermask and so on.
In general it must look like that:
http://picasaweb.google.com/lh/photo/C93AAUKOClYg5NkoR1FIlg?feat=directlink
 
Pictures of your board are more than welcome.

[stachu100]

Very cool stuff. Any chance you could show us some videos of it in use running some heavier software please ? Would be cool to see it running some videos and emulators (vice/mame/trureality/etc.) for example :-) iFusion should be very nice on that setup too :-)

It will be done
I just need some time to fine-tune my A4000D setup.

[stachu100]

Thanks!
I have special tool for reballing, this one takes me 2 days to finish.
First trial I did was without extra capacitors on the back of the board and i couldn't get stable work if frequency was higher than 233MHz...
So after changing voltage from 1,8V to 1,97V without any improvement in stability) I decided to put low-ESR capacitors on 1,9V line and add 2 extra MOSFET transistors (they are not really necessary; I did it just to be 100% sure).
Only after all these operations CSPPC started to work stable.
But of course for next upgrade it will be quicker as I know what to do already.

[stachu100]

@AppleHammer,
Could answer longer, but I think one sentence will be enough:
I'm an electronic engineer and I know what I'm doing :-)

[stachu100]

No, that's ok :-)
 
Just for your info: I have 3 oscilloscopes at home ;-)

[stachu100]

yes, ripple level was higher (don't remember values) and after adding these low-ESR caps riple level was much lower. And 604e is working almost at 400MHz as you can see.
The only problem I must look is that x6 multiplier is not working...
Need some time to investigate.
 
P.S. Mine analogue scope was not used for years as well, so time to sell. ;-)