Hi guys, thanks for your replies. I have tried both, Cyberpatcher (1.153) and Oxypatcher (3.12) and they have no effect on the issue that I experience.
Sysinfo 3.24 always ran fine (with the exception that it doesn't know the 060 and reports it as 040) and never crashed while testing. Also my Amiga never gave me any trouble when I used it for coding or other things. It just seems that certain instructions behave funny.
What version of 68060.library and setpatch do you recommend for OS3.0?
I'd recommend you use 3.1 roms and workbench 3.1 over workbench 3.0 And use the 3.1 setpatch.
I'd use the latest phase 5 libraries.
On the Mark 1 afaik ALL the RAM simms had to be identical.