Date : Mon, 18 Sep 2006 12:17:50 +1000
From : "Bob Devries" <bdevries@...>
Subject: Re: AMX mouse wiring
Ah-hah!
I have found a website that shows D2 not D1 as the Y-Dir. Changing that made
the Y direction correct.
Using a logic probe, I can see that the amiga mouse has the one Quadrature
line idling high and the other at low.
I will try reversing the X-Axis abd the X-dir wires to see what happens.
--
Regards, Bob Devries, Dalby, Queensland, Australia
Isaiah 50:4 The sovereign Lord has given me
the capacity to be his spokesman,
so that I know how to help the weary.
website: http://www.home.gil.com.au/~bdevasl
my blog: http://bdevries.invigorated.org/
----- Original Message -----
From: "Bob Devries" <bdevries@... >
To: <bbc-micro@... >
Sent: Monday, September 18, 2006 11:16 AM
Subject: Re: [BBC-Micro] AMX mouse wiring
> Regardsless of which numbering convention you use, I have the wiring done
> correctly according to information I have gleaned from websites:
> +5V goes to mouse pin 7
> 0V to pin 8
> CB1 to pin 4 (mouse Hquadrature)
> CB2 to pin 3 (mouse Vquadrature)
> D0 to pin 2 (mouse H)
> D1 to pin 1 (mouse V)
> D5 to pin 6 (left mouse button)
> D6 to pin 5 (middle mouse button)
> D7 to pin 9 (right mouse button)
>
> The buttons work fine, but the horizontal direction is reversed, and the
> vertical direction only goes one way towards the top of the screen.
>
> My guess is that the information I have is somehow incorrect, but where do
> I find a reliable connection diagram?
>
> --
> Regards, Bob Devries, Dalby, Queensland, Australia
>
> Isaiah 50:4 The sovereign Lord has given me
> the capacity to be his spokesman,
> so that I know how to help the weary.
>
> website: http://www.home.gil.com.au/~bdevasl
> my blog: http://bdevries.invigorated.org/
>
> ----- Original Message -----
> From: "Philip Pemberton" <philpem@... >
> To: <bbc-micro@... >
> Sent: Saturday, September 16, 2006 8:07 PM
> Subject: Re: [BBC-Micro] AMX mouse wiring
>
>
>> Bob Devries wrote:
>>> More info on my mouse problem:
>>> I swapped the two VIA chips, and found no difference.
>>> The BBC in question has a Revision 4 motherboard. It is fitted with the
>>> 8271 floppy disc controller, and the speech chips, but no econet.
>>> I hope I have the correct pinout for the user port Pin 1 is at the east
>>> side and the pins number 1 to 10 along the north edge, and then 11 to 20
>>> starting at the pin 1 end again. If this is not correct, please let me
>>> know.
>>
>> That pin numbering scheme is completely wrong.
>> IDC connectors are numbered like this:
>>
>> 1 3 5 7 9 11 .... 19
>> +---+
>> +--------+ +--------+
>> | o o o o o o o o o o |
>> | o o o o o o o o o o |
>> +---------------------+
>> 2 4 6 8 10 ...... 20
>>
>> The little arrow on the connector denotes pin one -- normally the red
>> line on the cable. If you pull the back off the connector (assuming
>> you've got an uncrimped one), you'll notice that the pins are
>> interleaved. Near the arrow, there will be one pin that's closest to the
>> outside of the plastic - that's the IDC tag for pin one. Pin two is the
>> one below it, about 0.05" (1.27mm) to the right. Pin three is then on the
>> same row as pin one, 0.05" further along than pin two. This continues to
>> the edge of the connector.
>>
>> Thanks.
>> --
>> Phil. | (\_/) This is Bunny. Copy and paste
>> Bunny
>> philpem@... | (='.'=) into your signature to help him
>> gain
>> http://www.philpem.me.uk/ | (")_(") world domination.
>>
>>
>>
>> --
>> No virus found in this incoming message.
>> Checked by AVG Free Edition.
>> Version: 7.1.405 / Virus Database: 268.12.4/449 - Release Date:
>> 15/09/2006
>>
>>
>
>
>
>
> --
> No virus found in this incoming message.
> Checked by AVG Free Edition.
> Version: 7.1.405 / Virus Database: 268.12.4/449 - Release Date: 15/09/2006
>
>