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Strange. Perhaps someone else can dig up some more info or even already knows more details. I'll have to give up on the VGPU mod here. For one because I don't have much spare time ATM and because I just don't know where to look for more details.
Seems like recently a lot of new small semiconductor companies from Asia entered the market, so it's quite easy to miss something. And some of them seem to lack good documentation, too. At least in english, that is.
Thanks for looking, it's appreciated. They were pretty cheap so I'm going to probe around a little and maybe do an experiment :D
For Vmem, you probably already know. Take the resistance between pin "FB" and GND on the RT9259A, multiply that resistance by ~20 and that's the value for the trimmer that you should use. Should work just fine. Trimmer also between FB and GND.
HAH, you'd be surprised how little I know about electronics but I'm slowly learning. I think the mem will be nice with a bit more volts so it's a good place to start. If I have a 'breakthrough' I'll be back. :DQuote:
Originally Posted by celemine1Gig
And don't forget to tune the trimmer to max resistance before soldering it in between FB and GND. That's the easiest way.