RGH RGH2 - CoolRunner Rev 3 outputs 100ms pulse instead of 100ns

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LarsBeugelaar

Noob Account
May 2, 2014
4
0
I have a Jasper 16MB Xbox360 Elite wich I would like to mod.

I have made two nand memory backups with my Nand-x using JRunner and uploaded the ecc image.

CoolRunner Rev 3 is wired as shown on these pictues: http://team-xecuter.com/RGH2/phat_rgh2.jpg

http://www.free60.org/Reset_Glitch_Hack

On the site above I read that the pulse that my CoolRunner sends over the CPU RST wire should have a length of about 100ns

After some trying without success I hooked up my scope and suprisingly the CPU RST pulse had a length of 100ms

The only thread I have been able to find on this issue is this: http://team-xecuter.com/forums/archive/index.php/t-85610.html

Though it states the same issue, it does not give any info on how to solve the issue.

Any help would be greatly appeciated. :)
 
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LarsBeugelaar

Noob Account
May 2, 2014
4
0
TX Product(s) used: Nand-X, CoolRunner Rev 3.

Console Type: Jasper (though it gives me trinity after the flash)
NAND size: 16MB
Dashboard version: Where Can I find this?
CB version: 9188

Screenshot of NAND details from J-Runner: attached

J-Runner log: nowhere to be found in my working folder :/

updflash.bin log (if applicable): also not

Image of Coolrunner: attached

Images of close-up soldering to motherboard: attached

Description of problem: see first post

Was the console working before you started: Y

The two (E, F) I2C wires are soldered on the bottom because one of the nand-x solder-on boards prevents me from soldering them on the top side. Though the wires are a bit longer scope still gives low noise, straight signal transistions. I2C appears to be running at 100KHz. The F wire is blue as I did not have any long brown wire laying around.

Hoping I provided enough info for you to help me out. If not just let me know. :)

Little sidenote: Xbox was purchased second hand at gooxbox360.nl wich sells almost all types of xboxes second hand. It did work perfectly.
 

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LarsBeugelaar

Noob Account
May 2, 2014
4
0
Many thanks. Have done everything you said exept changing the CPU reset wire. I will also try that, because it still doesn't boot.

What I just discovered is that the xbox pcb has a sticker on it that says 'CPU Rework HS'.

Also the CoolRunner still pulls the reset low for 100ms, not 100ns. Is this normal for RGH2? because if that is wrong it would not help changing the reset wire. It would still entirely reset the cpu and go nowhere.
 
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