My first RPG was a game called Tunnels of Doom for the TI/994A computer. A few years later, I played Dungeon Explorer on the Turbografx-16. When I finally got a PC (a 386SX), I immediately played The Magic Candle and Ultima VI. It all went uphill from there.
For the record, I do consider action RPGs such as Diablo to be RPGs, but just a different style of RPG than Baldur's Gate, similar as a WRPG (Western RPG) has a different style from a JRPG (Japanese RPG).