Hello, I've got a query about the compatibility of the keyboard connected mouse for the Olivetti M24/AT&T 6300. I was just wondering what other people experiences with it were. Following advice on this forum, I've re-wired an Atarti ST mouse to work with the AT&T6300 keyboard. Without a driver, it's working, and providing arrow key input and responding to button presses. With the mouse driver (AT&T version 1.0), it's also working, but only on a sub-set of programs. It works (as a full mouse) in the provided configuration program and Microsoft Works. But it doesn't work on lemmings or Monkey Island. Is this expected behaviour, and if so is there a work-around? Is it just that the mouse has limited support? Are there any other drivers that work with the mouse? I'm running DOS 3.3 and BIOS version 1.36, if that makes any difference. Thanks, Alastair Quick reply to this message Reply Reply With Quote Reply With Quote Multi-Quote This Message Blog this Post Yesterday, 02:32 PM #2 1ST1's Avatar 1ST1 1ST1 is offline Senior Member Join Date Oct 2014 Location near frankfurt/m, germany Posts 414 Default I have the original Olivetti mouse, but signal wise it is exactly the same as Atari ST/PC (PC 1-3) or Commodore Amiga (just two wires swapped compared to ATARI) and even some Schneider Euro PC. It's running fine with Windows 1.0, 2.0 and GEM when I select there the Olivetti Keyboard mouse driver (it's independent from the dos driver). The DOS driver works fine with Norton Commander and PC-Tools, but until yet I haven't tryed some games using the mouse. As basically your mouse adapter works, I don't think you have done something wrong. Don't forget, that mouse driver is very old and that mouse was not very common even on M24/6300, maybe it's incompatible in some way to some newer software. Quick reply to this message Reply Reply With Quote Reply With Quote Multi-Quote This Message Blog this Post Today, 11:34 AM #3 Simone2013 Simone2013 is online now Member Join Date Aug 2013 Location Ravenna (Italy) Posts 99 Default Quote Originally Posted by AlG View Post Hello, I've got a query about the compatibility of the keyboard connected mouse for the Olivetti M24/AT&T 6300. I was just wondering what other people experiences with it were. Following advice on this forum, I've re-wired an Atarti ST mouse to work with the AT&T6300 keyboard. Without a driver, it's working, and providing arrow key input and responding to button presses. With the mouse driver (AT&T version 1.0), it's also working, but only on a sub-set of programs. It works (as a full mouse) in the provided configuration program and Microsoft Works. But it doesn't work on lemmings or Monkey Island. Hi Alastair, From your description about the two game it seems that mouse is not working at all. I had a similar experience re-writing mouse driver for Olivetti Prodest PC1 (similar @ M24 keyboard mouse). The PC1 mouse uses keyboard scan codes for emulation mouse key. (I Think M24 uses scan codes also for movement). The problem with these two games (Monkey & Lemmings) is that thy hook int09 (keyboard interrupt) WITHOUT calling it back. So the original mouse driver cannot catch special scancode and (in my case) didn't operate mouse click. BAD programming indeed. Buy maybe they need all single MHz power from the processor. I re-wrote my driver to check hook int09 periodically and take it back if necessary. The good news is that they are the only games I found that have this problem!