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use an eprom (27C2001/27C020 or bigger) or flashrom (29F020 or bigger)
connect pins 22, 24 and 31 of the eprom to GND (pin 16 of the eprom).
you might have to connect 31 to 5V (pin 32) if you are using a flashrom.
Reset is A18 on this diagram.
FOR XBOX v1.0/v1.1
The two unused points are only two additional Adress-Lines for the Chip (with which you can access everything beyong 256 kByte) ... so they are NOT needed.
FOR XBOX v1.2/v1.3 (Thanks to D-BlooD who posted this diagram on Please login or register to see this link. )
FOR XBOX v1.4/v1.5 (Thanks to pcmerc who posted this diagram on Please login or register to see this link. ) WE is the location you jump on the bottom of the board along with the other point on top that is standard on all motherboards. These are the write enable for reflashing the TSOP.
Pad 33 is also known as link to 32 in previous pinouts.
I've got a 1.6 with good traces that won't power on. If I hold the power button in I can hear the HDD spinning but nothing else happens, no video output, the led's don't light up, nothing.. Before I go about ordering the replacement transistor for the mb, I'd like to test the psu to make sure it's working, and I don't have any other 1.6's around to try it out in.
I've been looking around online for 45 mins and can't find anything specific to testing the psu for correct voltage (it's a Delta if that matters, and everything looks flawless on it, no obvious problems.)
If anyone can help me out with this, or has another idea of what may be the problem, I'd appreciate it immensely (and yes I have a multimeter handy :P)
Just interested in which bios you flashed?
I've used the Hexen 2017 disc and followed a tutorial on YT which suggested the M8 Evo x
What are your suggestions and recommendations... and also why? i.e. what benefit, features etc...