MapleEngineer
If your circuit is behaving weirdly, switching on when you touch a wire or move your hand over the circuit you almost certainly have a floating input. You can solve this problem with a pull-up resistor. Many AVRs have built-in pull-up resistors that you can turn on using code.
In Sketch:
pinMode(2, INPUT_PULLUP);
In BascomAVR:
Config Portb.1 = Input Set Portb.1
There's a great article at SparkFun about Pull-up Resistors.
If your circuit is behaving weirdly, switching on when you touch a wire or move your hand over the circuit you almost certainly have a floating input. You can solve this problem with a pull-up resistor. Many AVRs have built-in pull-up resistors that you can turn on using code.
In Sketch:
pinMode(2, INPUT_PULLUP);
In BascomAVR:
Config Portb.1 = Input Set Portb.1
There's a great article at SparkFun about Pull-up Resistors.
The CIAs, 6510, and VIC are original. In this photo I have original BASIC, Kernel, and Character ROMs in stalled for testing but I normally use 25256 to 23xx adapters to use modern ROM chips with this motherboard. I bought the parts kit from Retro8BITshop and soldered it myself.
