[Coco] ps2 mouse on coco

[Mark McDougall]

On 10/01/2012 12:43 PM, Robert Hermanek wrote:

> That being said, thought I'd post this as a little converstaion starter,
> thought if anyone had already done this they could throw in their two
> cents.

I have done simple PS/2 communications in VHDL (for FPGA) so I know a bit 
about the protocol etc. I've also done changes to a PS/2 keyboard routine on 
an old PIC micro.

As David mentions elsewhere in this thread, your best bet is probably a 
cheap micro, and do the relative->absolute conversion in there, rather than 
tying up CPU cycles on the Coco. You could even make it emulate an existing 
serial mouse (via the micro UART of course), negating the need for a driver, 
and would also get you compatibility under various OSes (RSDOS, OS/9, 
proprietary software etc).

Regards,

-- 
|              Mark McDougall                | "Electrical Engineers do it
|  <http://members.iinet.net.au/~msmcdoug>   |   with less resistance!"