Amiga.org
Amiga computer related discussion => General chat about Amiga topics => Topic started by: stachu100 on April 30, 2010, 07:32:14 AM
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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 :D
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I can only say... CONGRATULATIONS my friend! This was a fine job and I expect more to come soon :)
/respect
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Great job Stanislaw!
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nice mod man! i envy that config :)
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Congratulations.. I hope to avail of your services in future :)
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Thanks All of you for these warm words :-)
As 375MHz version processors are rare and expensive I ordered few 604e@350MHz (604e@350MHz). I'm sure the can work stable @366MHz (5,5x66,667MHz).
But I'm still fighting to buy few 375MHz version.
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Congratulations! very good and clean upgrade :-)
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Zoom!
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Cool, nicely done
Have you done any OS4 tests?
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Thanks!
Not yet, but OS4 tests will be done as well :-)
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WOW! That's awesome. Was that the same card I sold you a few months back?
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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 :)
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if you're willing to sell a working card, let me know! :D
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Wow that is amazing!!! I'd love to get my card working that fast!!! :(
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Impressive. Props to you. A Cyber Vision PPC would be the icing on the cake... or a mediator with a vodoo or something like that.
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Very cool indeed. Any working processors you liberate during such mods could then be used to fix burned out CSPPC boards. I know I have one such board :) At least, the big brown spot under the PPC would seem to indicate that is most likely the problem.
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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 :-)
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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?
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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 :-)
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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. :)
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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.
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Hi Stachu100,
Out of curiosity, how do you reball the old devices? I guess you have to clean them all up and then apply solder to each individual pin? What about those nice new fast devices you have, are they already prepped in that respect or are you having to reball them?
Probably a good hour to two hours work for the entire job (remove old fit new) I'm guessing?
Oh - forgot to say, nice work by the way. Congratulations.
Apple Hammer
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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.
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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.
Interesting. How are you measuring the CPU supply voltage? If you're using a multimeter or similar instrument, then I suspect you're not seeing the whole story. It's quite possible that because the faster CPU draws significantly more current, the ripple voltage will have increased dramatically. Your multimeter would not necassarily pick up this ripple voltage, and this would explain why stability was not achieved simply by modifying the power supply for an increased output voltage. The supply could still be dipping well below the required supply voltage for fractions of a second, and these problems would not be seen on a multimeter. If you have access to a scope, it'd be interesting to have a look at it.
Of course, this would also explain why adding larger capacitance (I assume we're talking about the smoothing caps on the supply rail here) would improve the situation, since these would deal with the ripple voltage problem.
I'm not quite sure what you're getting at with the additional MOSFETs though. Are you saying you've changed the MOSFETs in the PSU for higher spec components or that you've added some additional ones? If the latter I can't really comment on that unless I saw the mod.
Happy Hacking! :)
Apple Hammer
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@AppleHammer,
Could answer longer, but I think one sentence will be enough:
I'm an electronic engineer and I know what I'm doing :-)
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@AppleHammer,
Could answer longer, but I think one sentence will be enough:
I'm an electronic engineer and I know what I'm doing :-)
I did not mean to suggest that you do not know what you're doing, so apologies if it came across that way. You clearly do have a good idea of what you're doing, else you'd never get it to work! I'm just showing a general interest in what you're doing.
Apple Hammer
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No, that's ok :-)
Just for your info: I have 3 oscilloscopes at home ;-)
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Nice. I used to have two - a quite modern but sort of entry level analogue scope, and more recently I bought a nice Tektronix DSO. A lot of people say you should always keep an analogue scope around, but to be honest I never used mine after I got the DSO so I gave it away for free to an Electronic Engineering student.
So... was the problem caused by increased ripple due to the power requirements of the faster device?
Apple Hammer
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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. ;-)
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Blimey, that's some CSPPC :-o
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Mmmm, speeeed!
How much would the mod cost, and is it a full 060?
EDIT: or do you do the PPC side only?
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How much would the mod cost, and is it a full 060?
EDIT: or do you do the PPC side only?
The days where 70+ MHz '060's were all EC varieties only have passed, really. The E71J mask has been around for quite a while now. That'll happily do 100MHz with the right cooling, though getting the rest of the card up to those sorts of speeds would be a big problem, I expect.