[AT] Expects: AX 8301H ────────────────────────────────────────────────────────────────── Returns: AX 8300H CF NC (0) no error CY (1) error; fn is busy ────────────────────────────────────────────────────────────────── Info: Cancels the most recent timer interval set via INT 15H 8300H. See Also: INT 15H (extended AT services) BIOS Data Area ROM-BIOS Functions -♦-