Hello all,

I'm new to the forum. I have been repairing these visionetics boxes for over 6 months now and have quit a stack of them building up. Does anyone have a JTAG pinout for them. They have st20tp4 chips, i tried going by the st20tp2 datasheet but get no response on the majority of tools. I have also gained access through the serial port on the back with a standard serial cable after soldering some cut traces on the max202 chip and can gain access to a command line but it is very limited.

I basically need access to test the chips and to pull down a local copy of the flash/firmware and any other things i can tinker with.

I have pics and information here, http://sleepy3d.ath.cx/mods/visionetics.htm

Any help would be greatly appreciated.

I also have a second brand box with OMEGA STi5518FVC chip in them that i cannot find a data sheet for that i would like to do the same with.

thanks all