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- ArcMouse 1.0a
- =============
-
- Archimedes Mouse Conversion for Amiga
-
- Copyright © 5 April 1996
-
- by Dave Harris
-
- Archive Contents:
- -----------------
-
- ArcMouse.txt this file
- ArcMouse.ilbm IFF ILBM picture of the connectors
-
- Distribution:
- -------------
-
- These plans are copyright © 1996 by Dave Harris.
-
- However, you have permission to distribute these plans and make this project
- as long as you don't sell it commercially. Selling this project for the
- cost of parts plus the local equivalent of $5.00US or less is acceptable.
-
- If you distribute these plans, all files listed in the contents must be
- distributed. Don't leave any out!
-
- In short, I don't want others taking credit for or making money from this
- project, and don't want it to be distributed with missing or hacked up
- files. Remember that I can waive any of the rules if you talk to me first!
-
- Disclaimer:
- -----------
-
- I am not responsible for anything in here, even if I got it wrong.
- If you do it wrongly, differently, or even exactly as I say, you
- take all responsibility for the consequences.
-
- In particular, as with any hardware modification, don't try this
- if you don't know what you're doing.
-
- All I'll say is that it worked for me. Proceed at your own risk!
-
- Introduction:
- -------------
-
- A few years ago, there was an article in _Amazing Computing for the
- Commodore Amiga_ on using an IBM PC-compatible bus mouse with the
- Amiga. This interested me greatly, as I only had the standard Amiga
- mouse (which wasn't very good). However, I couldn't find a bus mouse
- anywhere.
-
- In Autumn 1992, I managed to find a copy of Acorn's BBC A3000 Welcome
- Guide at school (*that*'s an odd thing: Acorn computers in a British
- school ;-). This thin booklet has the computer's pinouts in the back.
- I was particularly struck that the Acorn machines have a 9-pin
- mini-DIN mouse port (the same as a bus mouse port, according to the AC
- article); I already knew they had three buttons. Now I just had to
- find an Acorn-compatible mouse.
-
- On 16 October 1992, I went to the _Acorn User_ show at the Wembley
- Exhibition Centre in London. I found two stands selling Clares Micro
- Mouses: Clares, selling them for £19.99, and someone else, selling
- them for £19.95. I asked a bloke at the latter whether they were
- compatible with bus mouses; he told me that they were.
-
- I compared the Welcome Guide pinouts with the AC article, and I saw
- that they were not particularly similar. This is when I decided to
- go ahead and attempt to convert the mouse anyway.
-
- Stuff You Need:
- ---------------
-
- 9-pin `D' female connector
- multimeter or continuity tester (but see 4 below)
- something to strip wires with (such as a pair of wire strippers)
- something to cut a cable with
- soldering iron and solder
- 9-pin `D' hood (note that you might need a low-profile hood if
- you plan to use the mouse with an Amiga 2000, 500, or perhaps
- certain other models)
- screwdriver
-
- Pinouts:
- --------
-
- 9-pin mini-DIN Function Wire colour 9-pin `D'
- male connector (Acorn name) (Amiga name) female connector
- (Acorn side) (Amiga side)
-
- 7 Y Reference Mouse V ___________ 1
-
- 5 X Direction Mouse H ___________ 2
-
- 9 Y Direction Mouse VQ ___________ 3
-
- 1 X Reference Mouse HQ ___________ 4
-
- 3 Switch 2 Mouse Button 2 ___________ 5
- (Menu)
-
- 2 Switch 1 Mouse Button 1 ___________ 6
- (Select)
-
- 6 5V supply +5V ___________ 7
-
- 4 0V return GND ___________ 8
-
- 8 Switch 3 Mouse Button 3 ___________ 9
- (Adjust)
-
- How to do it:
- -------------
-
- 1. See how your mouse opens. Mine has a screw underneath each of the
- bottom corners of a silver-coloured label:
-
- .----------------------------.
- | CLARES MICRO MOUSE |
- | |
- | FOR THE ARCHIMEDES ® |
- | | `X' represents
- | Serial No: 0000431 | a screw
- | |
- | A Naksha O.E.M. Product |
- | |
- |X Made in Taiwan R.O.C. X|
- `----------------------------'
-
- 2. Open your mouse. For mine, this involved peeling back the label,
- removing two Philips-head screws, and separating the two halves of
- the mouse's case.
-
- 3. If your mouse's plug is attached to its circuit board by wires
- terminating in a header plug, remove it from the board. Mine
- did, so I did.
-
- 4. Find out which colour wire is attached to which mini-DIN pin. You
- can use a multimeter for this; if you don't have one, you can make
- a continuity tester:
- __________
- .----------------|__________|-----------.
- | |
- | resistor |
- ----- cell _
- === / \ lamp
- | \_/
- | |
- | |
- negative probe positive probe
-
- You probably ought to note the colours down; I have provided space
- on the pinouts chart above for this.
-
- 5. Reassemble the mouse.
-
- 6. Cut off the 9-pin mini-DIN plug a few centimetres from the mini-DIN
- plug end of the lead.
-
- 7. Strip the wires from the mouse's cable. I stripped about 7 mm
- of insulation; this was more than plenty. If you're using a
- hood that doesn't separate around the cable entry, you probably
- ought to slip it over the cable now.
-
- 8. With the help of the chart above, solder the wires to the
- appropriate pins of the `D' socket. I swapped the right mouse
- button wire with the middle mouse button wire so I could carry on
- using my middle finger for menus.
-
- 9. Once the solder has cooled, fit the hood.
-
- 10. Test your new mouse!
-
- Conclusion:
- -----------
-
- I've been using my converted mouse for nearly three and a half years,
- and I haven't had any problems yet (neither hardware nor software).
- Your mileage might vary, and please remember that I take no
- responsibility for anything that might happen in your life, including
- (but not limited to) any possible damage to your computer system.
-
- Enjoy!
-
- Revision History:
- -----------------
-
- 1.0 (2 July 1995): First public release.
-
- 1.0a (5 April 1996): Bug fix on diagram (the numbers were previously
- the wrong way round :-( )
-
- Credits:
- --------
-
- Thanks to the author of the AC article (sorry, but I can't remember
- the name) for the original idea. Thanks to Darren Ewaniuk (author
- of RomSwitch) for the Distribution section.
-
- Contacting the Author:
- ----------------------
-
- If you feel the urge to contact me (for instance, to send me money
- (though I'm not asking for any, I won't refuse it), questions,
- comments, bug reports, or even questions), you'll be needing this:
-
- E-mail: dah31@cam.ac.uk
-
- USnail: 3558 Ashford Dunwoody Rd NE Apt S
- Atlanta, GA 30319-2013
- USA
-
- (or, during term time until summer 1998)
- Royal Snail: Churchill College
- Cambridge
- England
- CB3 0DS
-
- Dave Harris ``Your rug's very
- dah31@cam.ac.uk slippy.''---Rachel Fisher
-