23 Jan
2008
23 Jan
'08
4:17 p.m.
So you're saying this would indicate there's
some
sort of firmware built into the mouse itself?
Serial mice (not just RS232 mice, but anything with a bit-serial
interface, including PS/2) invaraibly contain a microcontroller. IIRC one
of the old PIC application notes included schematics and firmware to make
a Microsoft-compatible RS232-interfaced mouse.
If the IBM 6150 mouse is the one I think it is, it's an optical mouse
contianing a 40-pin 8051 microcontroller.
-tony