@deepskies @root42 I learned to code in BASIC on the #C64, then switched to an #Amiga 500, on which I started learning C.
The CPU on which I learned the most was definitely the 25MHz 68040 of my Amiga 4000. By this time I was in high-school, old enough to start coding seriously on AmigaOS.
This machine also ran a #FidoNet BBS and, later, #NetBSD.
This is the original CPU card of my A4000, photographed last week during a restoration with my friends. And, yes, it still works perfectly! โค๏ธ