[[File:Atari-ST mouse adapter.gif]]
The schematic was released in german magazine "Schneider Magazin, 07/1988", apparently using 5 diodes and a 4.5V battery.  CPC Joy Port                     Atari-ST Mouse      Amiga Mouse  JoyUp    Pin1 --|>|------------- Pin1 XB             Pin1 YA  JoyDown  Pin2 --|>|------------- Pin2 XA             Pin2 XA  JoyLeft  Pin3 --|>|------------- Pin3 YA             Pin3 YB  JoyRight Pin4 --|>|------------- Pin4 YB             Pin4 XB  JoyFire2 Pin6 ------------------ Pin6 Left Button    Pin6 Left Button  JoyFire1 Pin7 ------------------ Pin9 Right Button   Pin9 Right Button  JoyFire3 Pin5 --|>|------------- Pin8 GND            Pin8 GND  JoySel1  Pin8 ------------------ Pin8 GND            Pin8 GND  Batt4.5V (+)  ------------------ Pin8 GND            Pin8 GND  Batt4.5V (-)  ------------------ Pin7 +5V            Pin7 +5V Supported The Atari-ST adapter is supported by G-Paint 2.0.