@jose1711 said in Tesla PMD-85 computer in RetroPie?:
multi-game tapes (such as games-1.ptp) are lacking information about the position of the game on the tape - is trial&error the only option
Pretty much, combined with using savestates.
What I do is, if I've got a tape with (say) five games on it, I make five copies of it and give each one the name of a different game.
Then I load the first one, note the tape count, and make a savestate at the start of the game.
Then I go to the second file, start it at the tape count I just noted, load the second game and make a savestate at the start of the game. And so on.
Now I've got five files in the EmulationStation menu called GAME 1, GAME 2 etc (even though they're all technically the same file), and all I have to do is boot them up then load the savestate to play them instantly.