3rd party 360 controller... With writable memory?

[stuntpenguin007]

I've had an xbox 360 with a short in the usb cable laying around for a while, so today I decided to crack it open to cut out about an inch of cord and make it usable again. When I flipped the board over I saw the usual microcontroller I would expect to see that interfaces with all the buttons, but wired directly into it, I saw an 8mbit readable /writable tsop looking thing.

it was called 39vf800a
http://www.semiconductorstore.com/pdf/n ... A-800A.pdf" onclick="window.open(this.href);return false;

O.K. so lets start by assuming things aren't so simple as to do something with a write enable pin and then plug it into a computer and read it... but I could always try. hmmmm.... would I have to gnd it or what?


edit: Upon closer inspection, DQ0 - DQ15 aren't connected at all, so I'll have to do some looking around.

[Axaj]

Dang, that is one burly chip. If you can find a good library (for Arduino) I think it would be worth a shot to try and sniff (if you can smd solder).

[stuntpenguin007]

I've performed a ram transplant on one of my original xbox's, so smd soldering should be no problem. Now just to figure out how to build a tsop reader / writer.

when you say "a good library for arduino", are you saying you think it could be read with an arduino or I could sniff it? I think getting the firmware from that chip would be a little better than sniffing it.

edit: Found out it can be read via an eprom programmer and a tsop 48 adapter. I've been meaning to get a cheap willem eprom programmer, but in the auction description it says the adapter isn't compatible with willem programmers.