XYBASIC for CP/M-80 (opens in new tab)

Great find! (I see it falls into the camp of sophisticated (rather than simple) handling of what the source called “vacuous condition” in FOR..NEXT, as we’ve been discussing in the Back To BASIC: Kemeny & Kurtz’s book from 1985 thread..) Also of interest, a feature to suppress output while execution continues: On the other hand, actually suppresses console output; execution of your program continues, but output is not sent to the console until the next is typed, or unt...