Jeff Thomas schrieb: > > Is it possible to use a PC mouse, PS/2 or Serial and reconfigure it, to > work with Apple IIe or IIc? Or is the circuitry too much different? Get a regular PC mouse and remove everything inside except for the LED/phototransistor assemblies. Use a 74LS14 to raise the phototransistor's outputs to TTL level (Howeyer, some Mac/IIe/IIc mice did use the open-collector signals directly, without any buffering). Or find a Serial-to-XY/IQ-Adapter. These have been sold for Amiga machines. I have one that calles itself "Topolino", a small dongle with a MAX232 and a PIC inside. Amiga mice have a different pinout so you have to rewire the converter's Amiga side. Patrick