The PropJoy allows Atari™ style joysticks to be plugged into the 2 supplied connectors. This provides an easy connection to SpinStudio or a modified Protoboard. This along with the Audio/Video adapter will allow you to play some of the games currently available on the Parallax™ forums.
Assembly
- Start by inserting the 2 ICs (labeled as red "A"s in the picture above) into the top side of the PCB(the side with white silkscreened legend). Match the indexing notch with the silkscreen image on the PCB. The legs of the chip may need to be bent inward slightly to seat properly into the holes in the board. Carefully turn the board over and solder the chips in place.
- Next insert the Resistor Networks (labeled as yellow "A"s in the picture above) from the top side of the PCB. These are polarized! Be careful to match the indexing dot above pin 1 and the end labeled 1 on the silkscreen. Carefully turn the board over and solder in place.
- It's time to insert the joystick connectors (labeled as green "A"s in the picture above) from the top of the PCB and solder in place. Ignore the pin numbering on the silkscreen. Just insert the connectors from the top of the board.
- Now install the 20 pin SpinStudio connector in the position marked with a Green B. Note - This component is inserted from the bottom of the board, and soldered on the top, opposite of the other components! You may want to solder 1 pin first, check to be sure the connector is positioned snuggly against the bottom of the circuit board before soldering the remaining 19 pins. Also you may want to turn the circuit board while soldering, to "attack" the pins in each row from a different angle.
Using
the PropJoy joystick adapter with SpinStudio
or Modified Proto Board
or Modified Proto Board
The 20 pin female header provides the following connections when plugged into Socket A on a SpinStudio Mainboard. Socket A is the prefered location for the PropJoy Joystick Adapter to provide compatibility with existing code that utilitizes P3-P6 as the default interface pins. A Socket A can also be easily added to a Parallax ProtoBoard using the simple steps in the Propeller Cookbook, with is hosted in the Tutorials section of this website.
| PropJoy | Propeller Pins |
| Common Clock | P3 |
| Common Latch | P4 |
| Player 1 Data | P5 |
| Player 2 Data | P6 |
The Bitmasks for the various inputs from a standard Atari one button Joystick are as follows:
| Input | Bitmask |
| Right | 00001000 |
| Left | 00000100 |
| Down | 00000010 |
| Up | 00000001 |
| Fire | 00100000 |
More Bitmasks will be added to this documentation as other joysticks are tested. If help is needed in modifying a games source code to use the PropJoy Adapter, let me know and I can help with the modifications needed to run on SpinStudio.