You probably didn't catch, somewhere else in the forum threads, that I used to be a registered third-party developer with Atari Corp., back in the 90's. So I used to write software for Atari 8-bit and Atari ST/STe/TT/Falcon/etc., the latter series coming with a combined TOS/GEM operating system (TOS in ROM chips which would provide the combined BIOS/DOS functionality along with a DEC licensed GEM GUI). Man, I can tell you a lot of stupid, uselessly outdated details about those systems.