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QIMi Mouse Interface - Is it compatible with Atari/Amiga Mice?
Posted: Sat Aug 30, 2025 10:26 am
by martyn_hill
Good morning all!
On both my Thor XVI and my Aurora QL I have QIMI compatible mouse ports and wanted to explore the use of a more modern/available mouse.
As I use PS/2 mice, I was hoping that the Atari ST/Commodore Amiga type mice interface might be usable via a cheap PS/2 to Atari/Amiga Mouse converter, then attached to the Thor/Aurora.
Is the QIMSI Mouse interface in anyway similar to that used in the ST or Amiga?
Thanks for any advice!
Re: QIMi Mouse Interface - Is it compatible with Atari/Amiga Mice?
Posted: Sat Aug 30, 2025 10:45 am
by Peter
Good morning Martyn,
martyn_hill wrote: Sat Aug 30, 2025 10:26 am
Is the QIMSI Mouse interface in anyway similar to that used in the ST or Amiga?
You probably mean QIMI without the "S". Detlef has designed a QIMI interface for PS/2 mice:
https://forum.tlienhard.com/phpBB3/viewtopic.php?t=1109
All the best
Peter
Re: QIMi Mouse Interface - Is it compatible with Atari/Amiga Mice?
Posted: Sat Aug 30, 2025 11:30 am
by dex
“Once fitted, the other end of its ribbon cable attachment has a standard 9 pin socket and is compatible with contemporary Atari (e.g. the ST) mice.”
https://qxl.win/qimi_ql_mouse.htm
Re: QIMi Mouse Interface - Is it compatible with Atari/Amiga Mice?
Posted: Sat Aug 30, 2025 2:36 pm
by Pr0f
Hi Martyn,
I've used one of those PS/2 to Amiga mouse adapters with the QIMI compatible pins on Aurora bord - the wiring for Amiga is subtly different to the Atari, but apart from that it does work - it doesn't feel as responsive as a direct PS/2 interface.
Dave.
Re: QIMi Mouse Interface - Is it compatible with Atari/Amiga Mice?
Posted: Sat Aug 30, 2025 3:54 pm
by martyn_hill
Thanks guys!
I've got the PIC arriving shortly so will just need to find a way to program it and try it the converter.
Don't know how I missed the comment on the QXL.WIN site nor Detlef's PS/2 converter design - so thanks for the links!
And how that 'S' snuck-in my original post I can only assume was auto-correct on my phone
Re: QIMi Mouse Interface - Is it compatible with Atari/Amiga Mice?
Posted: Mon Sep 01, 2025 11:37 pm
by Derek_Stewart
Hi,
here is the connections of Amiga and Atari Mouse connections:
Code: Select all
Pin Atari Amiga
1 XB YA (V-pulse)
2 XA XA (H-pulse)
3 YA YB (VQ-pulse)
4 YB XB (HQ-pulse)
5 NC MBUT
6 LBUT LBUT
7 +5V +5V
8 GND GND
9 RBUT RBUT
taken from Atari Forum:
https://www.atari-forum.com/viewtopic.php?t=20207
usually, there is a switch to change the mouse between Atari and Amiga mode.
The QIMI mouse, was derived from the Atari mouse system, I think.
see the file about QL Circuit conne tuons, that detaiks QIMI /Atari Mouse connne tions:
https://dilwyn.theqlforum.com/docs/hard ... QBoard.zip
or from the zip archive:
Re: QIMi Mouse Interface - Is it compatible with Atari/Amiga Mice?
Posted: Tue Sep 02, 2025 9:36 am
by martyn_hill
Thank you Derek!
I've since received the PIC uC and have programmed them successfully with my humble TL866-CS, so will be wiring them up to connect PS/2 mice via the Atari compatible mice ports on my Aurora and Thor (once I've replaced the 68B02 on my Thor's IO board...)
I'll share my findings thereafter.