Re: Please Help me Somebody with DEMUX Gate

Posted by WBahn on Jun 17, 2019; 9:46pm
URL: http://nand2tetris-questions-and-answers-forum.52.s1.nabble.com/Please-Help-me-Somebody-with-DEMUX-Gate-tp4033175p4033306.html

michael1978 wrote

hi,

its vga and pc/2,
i search on internet tutorial but i cant find nothing
 
do exist any chip ic for vga and pc/2 keyboard
or what i need to build? i dont know man, where can i learn for protocols of vga pc/2 do you know any book or tutorial in internet


thanks

There are lots of places where you can find out about the VGA signal characteristics.

https://en.wikipedia.org/wiki/Video_Graphics_Array#Technical_details

Is as good a place to start at any.

You can Google for things like "VGA video signal generation" or "interfacing to PS/2 keyboard" and just start seeing what is out there. You will probably find that you need to get bits and pieces from various sites in order to find out everything you happen to need.

But those will only address the device side of the interface. You also need to address the CPU side of the interface and that's going to be largely up to you (unless you happen to to find a site by someone that has already done this, which there are probably several out there).