BASIC Pseudo identifiers - Bricksnspace/MegaBASIC GitHub Wiki
INKEY$
Returns (and eats) the last key pressed (non-blocking, returns immediately). If no key are available, returns empty string.
30 a$ = INKEY$
MSTIME
Returns milliseconds from power up. Uses Arduino function millis().
PRINT MSTIME
502382
RND
Returns pseudo-random number betweeen 0 and 1.
20 a = RND
30 PRINT a