Original Kempston mouse interface contain some counters and mouse is very similar as original Amiga/Atari mouse. Only old russian Kempston mouse clones support direct connection of AMIGA mouse.
If you connect real AMIGA mouse to kempston joystick connector then is possible use only software with "A-MOUSE" support. Software support is small and mouse driver is complette controlled with Z80CPU. Software for A-MOUSE:
http://velesoft.speccy.cz/othermouse-cz.htmOn this page is also software for ATARI MOUSE, AMX MOUSE, etc...
KEMPSTON MOUSE INTERFACE = amiga mouse + next hardware (or PS/2toAMIGA MOUSE adapter + next hardware, or complette emulation in PIC/ATMEL). K-MOUSE TURBO enable connection of PS/2 mouse or real AMIGA MOUSE and convert it to KEMPSTON MOUSE compatible mode. K-MOUSE also enable A-MOUSE emulation in same time.