Hi at all, i'm working to make alive my bigboard 1. It has input for a parallel keyboard so I'd like to build or to know where to find an interface to convert a ps2 keyboard in parallel way. Well here <http://www.rasmicro.com/FTP/an434.pdf> http://www.rasmicro.com/FTP/an434.pdf there is a schematic to convert ps2 to IIC way. What I asking for is: 1) Is there anyone who know the way to modify the assembly to make the 8xc751 working on its p1.0 to p1.7 output to generate a parallel ascii code corresponding to the key pressed on the ps2 keyboard? 2) What could be the programmer to save the program onto the 8xc751? Thanks Enrico