Here are the parts needed to build the pokey printer port interface circuit. Parts except where noted are from a JDR catalog. Prices do change so don't hold me to these prices. Quantity Description JDR Part Number Price -------- --------------- --------------- -------- 2 74HC574 74HC574 $ 0.79 1 1.8432 Mhz TTL Level Osciallator OSC1.8432 $ 2.79 1 25 pin D-Sub Connector Right Angle DB25SC $ 0.89 1 Atari Pokey Sound Chip C2294* $ 3.50 C012294** $ 5.00 1 1K Ohm Resistor R1.0K $ 0.05 1*** 1/4 Mini Jack Mono Plug M14P $ 0.79 1**** 4.5 X 6.5 inch breadboard JDR-BB65 $ 3.95 * This is the price quoted from B&C Computer vision ** This is the price quoted from Best Electronics *** I believe this is the same jack as the back of your IBM sound card. You then take a simple 1/4 plug (on both ends) and plug it into the pokey device and then into your line in on your sound card, or your stereo. **** This is more breadboard than you will need, if you can find some place that sells smaller boards go for it. Some other things you might need. Power Supply. There is no power available on the printerport. You need to get a +5 volt regulated supply. You can get these at radio shack, JDR, etc. If your inventive you could steal it from your Joystick connector on your PC. Take your supply and either put some type of connector on the board, or just place the +5 volt line of your supply to the circuit board and connect to your +5 line somewhere in the circuit. Do the same with your GND line on the power supply and connect it to one of the GND signals on the circuit. Make sure you get this correct. Don't wire them backwards. If you put your volt meter on the power supply wires directly and read +5 volts, then the wire your RED volt meter lead is on is your +5 volt line and the other is ground. Don't use a 6 volt power supply or anything besides +5 for that matter. If you do make sure you put a +5 volt regulator on it. Case. If you want to be fancy I would get a small case to put it in. ---------------------------------------------------------------------------- If after reading this you are scared about doing the circuit you should stop and have a more electronically inclined friend do it. See the readme.now file for info on a possible PC card slot version of this I might have made. This would fit in your PC and not require an external power supply, no printer port. And be faster for the emulators to use. ---------------------------------------------------------------------------- Phone Numbers. JDR MicroDevices 1-800-538-5000 http://www.jdr.com Best Electronics 2021 The Alemeda Suite 290 San Jose, California 95126 408-243-6950 B&C Computer Visions 1725 De La Cruz Blvd. #7 Santa Clara, CA 95050 408-986-9960