Hi,
As an experiment I tried to put 604e@350MHz CPU onto Blizzard PPC.
Modification done:
1) PPC CPU replaced :wink:
2) Oscillator 60MHz with x5,5 which gives 330MHz frequency for CPU core
3) Removed original 2,5V voltage regulator
4) 1,9V/10A voltage regulator added ("classic" type soldered ad-hoc just to proof the concept)
5) +5V from power supply connected to 1,9V voltage regulator directly; without it I've measured 4,5V on the Blizzard PPC instead of 5V
As a results card is booting without RAM, but PPC is not recognized:
http://www.youtube.com/watch?v=YH99QWKycO4
With RAM installed I have RAM error:
http://www.youtube.com/watch?v=6H-huajbnVA
Pictures:
http://picasaweb.google.pl/stacho100/BlizzardPPCWith604e350MHzUnsuccessful#
So I assume that Blizzard PPC software inside flash memory cannot init 604e correctly (lack of proper routines inside Blizzard PPC flash) and/or logic on the board is not working with 604e because onboard CPLD IC's are not adopted to serve 604e.
Anyway as I'm not a genius :wink: I will drop the idea to modify Blizzard PPC hardware/software and just un-solder 604e and put standard 603e@300MHz.
But at least I tried. :banghead:
As an experiment I tried to put 604e@350MHz CPU onto Blizzard PPC.
Modification done:
1) PPC CPU replaced :wink:
2) Oscillator 60MHz with x5,5 which gives 330MHz frequency for CPU core
3) Removed original 2,5V voltage regulator
4) 1,9V/10A voltage regulator added ("classic" type soldered ad-hoc just to proof the concept)
5) +5V from power supply connected to 1,9V voltage regulator directly; without it I've measured 4,5V on the Blizzard PPC instead of 5V
As a results card is booting without RAM, but PPC is not recognized:
http://www.youtube.com/watch?v=YH99QWKycO4
With RAM installed I have RAM error:
http://www.youtube.com/watch?v=6H-huajbnVA
Pictures:
http://picasaweb.google.pl/stacho100/BlizzardPPCWith604e350MHzUnsuccessful#
So I assume that Blizzard PPC software inside flash memory cannot init 604e correctly (lack of proper routines inside Blizzard PPC flash) and/or logic on the board is not working with 604e because onboard CPLD IC's are not adopted to serve 604e.
Anyway as I'm not a genius :wink: I will drop the idea to modify Blizzard PPC hardware/software and just un-solder 604e and put standard 603e@300MHz.
But at least I tried. :banghead: