isnt that a little bit expensive? 😮 you can have decent GPU for that

Yeah it's pricey. I'm putting together one of the hobby boards right now, but the parts for it + shipping are still somewhere in the neighborhood of $20, and that's not taking into account my lack of a ROM programming tool.

are you sure this cannot be done with some very basic microcontroller testboard by using its gpio pins? im no pro, but thats how i understand those things

It certainly can be done with a basic microcontroller.

http://www.vcfed.org/forum/showthread.php?159 … board-Converter

http://www.vcfed.org/forum/showthread.php?445 … to-XT-converter

I'm working on the first now, but realistically it's not THAT much cheaper. It's around $25 for the components shipped from Mouser, and it'll be an extra charge for a pre-programmed chip since I don't have a rom programming thingy. The board itself is another $7 shipped unless I want to just free-solder all the parts together.

The second option requires an Arduino Uno, which is not really a cheap option to begin with.

i see 😒 the problem is they take the popular approach i guess; would you happen to know what the real difference is between at and xt keyboard? maybe thats the easiest way out? i mean noone is going to reinvent the wheel without getting money out of it

http://www.ee.siue.edu/~bnoble/classes/ece381 … cxt_ps2_adb.pdf

No idea if that answers your question.

sadly it does 😮 i lack knowledge

For the record, the protocol converter I linked in the original post seems to work just fine. I occasionally get a missed/skipped key if I REALLY open up on it (>120wpm) but I can't say for certain if that's not simply a problem with the system speed/keyboard interrupt handling...