Date   : Tue, 14 Aug 2007 17:16:39 +0100
From   : julesrichardsonuk@... (Jules Richardson)
Subject: Depraz mice + Master 512

Johan Heuseveldt wrote:
>> [1] One's missing its middle button. I'm pretty sure GEM only uses left/right 
>> buttons anyway; can anyone confirm that?
> 
> Yes, I can confirm (just looked at one).

OK... so, does anyone know what pinout the M512 is expecting? I get no 
response from the mouse that I just tried (it's possible that it's broken of 
course) - GEM just starts up OK but the mouse pointer never moves.

The Depraz User Port connector pinout seems to be:

   port pin   function
     1        +5V
     6 (PB0)  Middle button
     8 (PB1)  Left button
    10 (PB2)  Right button
    14 (PB4)  Y1
    16 (PB5)  Y2
    18 (PB6)  X1
    19        GND
    20 (PB7)  X2

... anyone know if that matches the mouse pinout for whatever mouse actually 
came with the M512?

Alternatively, is there some specific *CO. command I need to issue on the M512 
side before the mouse will work under GEM? (it's either that or the User port 
is dead in the Master, which I suppose is possible... I'm not sure of the 
easiest way of quickly testing the port, though)


Fixing the mouse / rewiring the mouse / fixing the User Port / issuing *CO. 
commands is all easy enough, but it'd be nice to get to the bottom of which of 
the four is actually needed :-)

cheers

Jules