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How works Bios Chips
Posted: Sun Dec 18, 2011 1:37 pm
by sumas
Hello Guys,
Is there any documentation how the Qoob and Viper Chips work?
Im interrested in how it get controller before the org. BIOS boots.
How can i stop the boot process of the normal cube.
Later on it would be interesting how to get one code in there. (dreams of the future)
Would be nice if i can get some informations.
thanks for all informations
Sumas
Re: How works Bios Chips
Posted: Sun Dec 18, 2011 3:13 pm
by _Nold_
sumas wrote:
Im interrested in how it get controller before the org. BIOS boots.
That is exactly the same i was wondering about today, too ^^
I'm pretty exited for the answer
Re: How works Bios Chips
Posted: Sun Dec 18, 2011 9:10 pm
by emu_kidid
Do you mean when you hold X to boot to original BIOS? that's just cause it always boots to Qoob first and if it notices X is held down it'll boot the original IPL.
You can get your own code on the Qoob (by XOR'ing a headerless DOL file compiled for 0x81300000 with the IPL XOR key) and for Viper GC/Extreme via the makevgc application.
Re: How works Bios Chips
Posted: Sun Dec 18, 2011 9:39 pm
by sumas
I didn´t want to get to the normal bios.
I want to stop the boot process.
And then i want to go on with the boot process
In detail:
I want to put a pulse VU to my cube.
To set up the chip i must push a botton. the only bottom on cube is the reset one.
So i have to stop the boot process.
Setup Pulse VU
and after 30sec. it boots to normal bios.
In short:
Power on
timer coutdown startet
setup pulse vu
timer at 0
original bios start
So if i could stop the normal boot process like the bios chips, it would be possible to run a timer and then it go on normal.
For future it would be nice to know how i can run own code before original bios.