[jeffwass]

Yeah, they really did put a lot of effort in supporting a variety of scattered audio and video options back in those days.

Kings quest IV, as well as Hero's Quest I, both specifically supported my Casio keyboard. Multi-channel MIDI output using different instruments which they mapped correctly, and even some of the built-in sound effect channels for effects like flowing water or bird chirps.

Same with video, I had a Tandy which had its own proprietary video mode of 320x200 resolution in 16 colours, which was specifically supported you most Sierra games, along with the generic CGA and EGA modes. Tandy also had a proprietary 3-channel sound mode which was supported, though the MIDI via my external keyboard sounded way better.

[Narishma]

It wasn't that proprietary. It's the same 3-voice TI PSG used in the IBM PCjr, TI 99/4A, BBC Micro and various other computers, consoles and arcade machines of the time.

[jeffwass]

Was the programming interface the same? Curious because I recall "Tandy" being a specific sound option at the time.