Hello folks,
What a computer history! 
Of course my first computer was Apple II series that was school-owned. For home use, my first computer was TI-99/4A Home Computer. Its BASIC interpreter was pretty slow because it was interpreted twice. I wrote many BASIC programs on both TI and Apple computers.
Then Commodore 64, Commodore 128, Amiga 500, Amiga 1200HD before I went PC world.
During my college life (Gallaudet University), I had my accounts with VAX-11/780 and DECsystem10 mainframe systems. With many computer science courses, I wrote many programs on VAX systems and sometimes DECsystem10 running TOPS-10.
There are now emulators for VAX and DECsystem10.
Sword7
