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Kempston Mouse: Difference between revisions
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[[File:Datel_genius_mouse.png|270px|thumb|Datel Genius Mouse]] | |||
Note, | The Kempston mouse was a mouse interface for the ZX spectrum and compatables. | ||
In particular, plugging an Amiga or ST mouse into the original interface will fry the mouse as it puts +5v right into the output of one of the mouse | |||
it uses an interface with two signals per direction 180 degrees out of phase to determine the direction the mouse is going in[[https://en.wikipedia.org/wiki/Incremental_encoder quadrature encoding]]. | |||
Note, The original Mice have a different pinout to either Amiga, Atari or Datel mice, so don't mix them up! | |||
In particular, plugging an Amiga or ST mouse into the original interface will fry the mouse as it puts +5v right into the output of one of the mouse comparators! | |||
{| class="wikitable" | {| class="wikitable" | ||
| Line 15: | Line 19: | ||
| xxxx x011 xx0x xxxx | | xxxx x011 xx0x xxxx | ||
| X axis | | X axis | ||
| 00-FF Roll over at 0 | | 00-FF Roll over at 0 and $FF | ||
|- | |- | ||
| 65503 | | 65503 | ||
| Line 21: | Line 25: | ||
| xxxx x111 xx0x xxxx | | xxxx x111 xx0x xxxx | ||
| Y Axis | | Y Axis | ||
| 00-FF Roll over at 0 | | 00-FF Roll over at 0 and $FF | ||
|- | |- | ||
| 64223 | | 64223 | ||
| Line 29: | Line 33: | ||
| D0:Right D1:Left D2:Middle (Some compatables only) | | D0:Right D1:Left D2:Middle (Some compatables only) | ||
|} | |} | ||
==External Links== | |||
* [https://k1.spdns.de/Vintage/Sinclair/82/Peripherals/Mouse%20Interfaces/Kempston%20Mouse%20Interface/ black-ice] contains full details including PCB pictures and a schematic. | |||
