KIM-1 Copyright: You may copy the schematics for NON-commercial use. I hope you enjoy it. If you use it, just give me at least some credit like "Stolen from Ruud" :-) The schematics are without the power suply or the power connector. The fact is that you have to provide your own PS which you have to connect to the applicationport. As you can see there are a lot of switches. With one exception they represent the keys. Unfortunally Ulticap denies me to name them after their real names, so I simply called them K1..K25: K0 = RS = Reset K1 = ST = Step K2 = 0 ... K11 = 9 K12 = A ... K17 = F K18 = AD = Addressmode K19 = DA = Datamode K20 = + = Increment address K21 = GO = Execute program K22 = PC = Program Counter K23 = SST = Single Step mode (real switch) You will find instructions how to build your own KIM-1 on my home page at . Ruud Baltissen