@easy_john
In my testing Radeon does NOT WORK on OS 4.0 in the Amiga 4000 configuration.
Some A1200 users have got it to work, but they have Zorro 2 only.
If you are able to get it to work on OS 4.0 classic then I would be interested to know.
I have tried many times myself (with OS 4.0) to get the Radeon to work on the Zorro-3 based Amiga 4000, but so far no luck.
OS 3.9 it works, though, as you have found out
