>
> Veronica wrote:
> > You could start with
> > http://www.microchip.com/download/appnote/devspec/16c5x/00519c.pdf
> > No circuit but doesn't look there is much to it.
>
>
> > Does anyone know where I can find a schematic diagram for the standard two
> > button PS/2 style MS mouse?
> > Google does not give me any hope.
> >
> > Regards,
> > Stephen D. Barnes
>

> Thanks...I'll check it out.
>
> Regards,
> Stephen D. Barnes


The document referenced describes implementation of the standard serial mouse. What I am
looking for is a schematic for the PS/2 style mouse (any additional reference info would
be great also). The Microsoft PS/2 mouse (the version I have here) uses a PIC16c58 OTP
device with encoders connected to RB0:RB3. It also appears that transistors are used in
some fashion to switch the IR emitters (note that PS/2 mouse is capable of receiving
initialization data from the PC). I'm not so interested in the protocol as I am the
hardware as I want to utilize portions of the existing circuitry.
Thanks!

Regards,
Stephen D. Barnes

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