@Kronos
Let me clarify that the Classic Boing Ball mouse will work on a Classic Amiga without any adapter. They are 1000 dpi and feature laser technology- they simply plug into your A500, A1200, A2000, A3000 or A4000 and you can start using straight away. No drivers or adapters needed.
There is also some great software to download for to configure extra buttons and scrollwheel that they have.
Just a heads up that the driver for this causes all kinds of crazy issues when the user had a Vampire 600 or 500 installed. It will not let the right mouse button work in some applications properly. For example in DPOUS 4 when you right click on the "s" in the bottom file window to bring up all your mounted drives it does not click and instead makes the scroll bar move to the right.
Also when you open a file selector window it will let you select the volumes, but when you go into one to view contends it will start to jump all over and not let you go into the selected drawer. Example, open Text editor, select open to pick your file, Click DH0: click TEMP drawer, it shots over to ENV: or something strange like that instead. Click into the path bar and it will shoot you over to the root again, very odd.
I didnt know what was happening at first since I set this up and then started having issues on another hard drive after installing it, didnt notice this driver was the cause untill I put a new motherboard in my 2000 with vampire and then a new OS install without the drive. Things worked, reinstalled this driver last night and the issue came back. Commented out the user-startup entry for c:mx1000.driver and moved freewheel to inactive in WBstartup, reboot and problem gone.