[coldacid]

Probably AMOS, unless you were using an A1000 running OS 1.x. I don't think Amiga Basic worked on anything else.

[harel]

It was Amiga 500, and it was either 1988 or 89. Amiga Basic most definitely worked on the A500 (although it's equal chance I used it or Amos).

[coldacid]

It might have worked on a 500, but it definitely didn't work on OS 2 or newer.

[harel]

I'm not sure how this relates to what I said but no worries. All good.