I'm always a few years behind bleeding edge, so while 386's with 4Mb RAM and a HD were entry level I was busy writing my own BBS software for an ageing BBC Model B Micro (6502 8 bit processor w/ 32k RAM, circa 1981). The BBS was written in BASIC and it had "read only" fidonet mail areas filled by capturing messages from a real BBS.
I even started working on a multiline multithreaded version written in pure 6502 assembly language.

I found a printout of the source code when I was moving, weird seeing your own code from 15 years ago.