USB programming interface for the P8X Game System.
Seen by the operating system as two serial ports compatible with Parallax Prop-plug.
Windows
- GPU_ICSP = COM15
- CPU_ISCP = COM16
Linux
- GPU_ICSP = /dev/ttyACM0
- CPU_ISCP = /dev/ttyACM1
Note: Actual port numbers may vary depending on other USB devices plugged on the system.
Parts List
- R1 = 220 ohm 1/4 watt
- R2 = 220 ohm 1/4 watt
- R3 = 220 ohm 1/4 watt
- R4 = 220 ohm 1/4 watt
- R5 = 33.000 ohm 1/4 watt
- R6 = 10.000 ohm 1/4 watt
- R7 = 10.000 ohm 1/4 watt
- R8 = 10.000 ohm 1/4 watt
- C1 = 100.000 pF poli
- C2 = 10 uF 63v elettr.
- C3 = 22 pF disc
- C4 = 22 pF disc
- C5 = 10.000 pF poli
- DL1 = Red LED
- DL2 = Yellow LED
- DL3 = Yellow LED
- DL4 = Green LED
- XTAL1 = 12 MHz crystal
- IC1 = PIC18F24J50
- TR1 = Transistor BC547
- CN1 = USB-B connector
PCBs are shared on OSH Park and can be ordered from there:
https://oshpark.com/shared_projects/9SPZhAax