I bought an Amiga 1000 second-hand many years ago for $50. In this deal I received a spare motherboard as the one installed in the chassis was upgraded; most notably, it had KickStart on ROM and thus didn't require a disk at power-on (other than the Workbench, naturally).
It has been a while since I've looked at this machine, but before I go digging it out and disassembling it to see, I'm curious about this ROM modification. I know about the Phoenix motherboard, but I don't think that is what I have hiding in my basement shelves. Was a ROM-based A1000 motherboard a factory or aftermarket modification? Was this common or do I have some unusual specimen?
Last I turned on the machine (probably 2 years ago), it did work but the floppy drive needs some maintenance so I put it away for a future date. As far as opening it up to see what is inside, I haven't done that for probably 20 years.