Jeff - welcome aboard! I too am a Ham - N3KAK - and sometimes active. 10m was open to Europe yesterday from Colorado so I made a few brief contacts.
I look forward to hearing more about your older systems. My S100 system started out over 30 years ago but recently I have changed to a smaller terminated MB and replaced the monster boat anchor linear PS's with Meanwell switchers. As you may discover I am mostly a 6502/65C02 fan but keep my nose in CP/M and Z80s a bit. I have two 65C02 CPU boards for my S100 system.
Rich Leary