Date   : Sun, 30 Jul 2006 22:04:40 +0100
From   : dominic beesley <dominic@...>
Subject: Re: How to make an AMX mouse

Excellent, thanks.

Will buy the plugs and sockets tomorrow and put the diagrams up on my 
website.

Got a prototype mouse driver working under - well a dot moving about on 
the screen :) - beebem but suspect that it may not work the same as real 
hardware!

Cheers

Dom

Jonathan Graham Harston wrote:
>>Message-ID: <44CC8325.80801@...>
> 
>  
> dominic beesley <dominic@...> wrote:
> 
>>I'd quite like to test some mouse driven software I'm writing on real
> 
>  
> Mouse driver at http://mdfs.net/Info/Comp/BBC/Mouse
>  
> 
>>I've got quite a few old Archimedes mice around the place, is it easy
>>enough to rewire / interface one of these to the user port to appear as
>>an AMX mouse?
> 
>  
> A quadrature mouse (such as an Archimedes mouse) should be
> connected to the BBC user port as follows:
>  
>   +5v  1 | 11  CB1 - Xaxis
>        2 | 12  CB2 - Yaxix
>    0v  3 | 13  D0  - Xdir
>        4 | 14  D1  - YDir
>        5 | 15  D2
>        6 | 16  D3
>        7 | 17  D4
>        8 | 18  D5  - Left
>        9 | 19  D6  - Middle
>       10 | 20  D7  - Right
>  
> I tend to put a 9-pin D plug on mice using the Master Compact
> pinouts:
>  
>            1 Xdir
>    Left 6
>            2 Right
>     +5v 7
>            3 Middle
>      0v 8
>            4 Ydir
>   Yaxis 9
>            5 Xaxis
>  
> and make a userport to 9-pin D socket connector so I don't have to
> scrabble around underneath the computer, and the mice are also
> usable on Compacts.
>  
> Note that the Master Compact mouse connectopr actually connects to
> different user port signals than the other machines. The *Mouse
> command refered to above takes this into account.
>