Welcome to the forum @romdump . I have two working 386's and three working 486's. Had a fourth 486 but passed it on to another member this summer. I tend to gravitate toward 8088 to 80486 stuff but have lots of Pentium's also.
I am actually trying to deisgn a 386/486 trainer, and to port the ANNABIOS (Autobios) to load a minimal DOS OS. I purchased a Microtek EA486 ICE to aid me but unfortunately I can't find the software to use it, (Micetek has a very old version of the software not compatible my version of ICE).
I tried reaching out to Microtek ex-employees with little success. I am hoping someone on the forum has the software.
I am also hoping to get in contact with a user on the forum who had the Sourcer 8.0 manuals. I am trying to reverse engineer my OPTI 486 motherboard BIOS.