INT 1aH 00H: Read System Clock (Ticks)

                                                              [PC] [XT] [AT]

 Expects: AH    00H


 Returns: AL    0 if timer has not overflowed past 24 hrs since reset

          CX,DX Ticks since last reset; CX is high, DX is low


    Info: Obtains the current tick-count.  The tick count is stored at

          0040:006E in the BIOS Data Area.  It is incremented about once

          every 55 ms by INT 08H:

            clock updates at 1193180/65536 (about 18.2) ticks per second.

            counts per second ÷ 18

            counts per minute ÷ 1092

            counts per hour   ÷ 65543

            counts per day    ÷ 1573040

See Also: INT 1aH (BIOS Time I/O)

          DOS fn 2cH (get system time)

          ROM-BIOS Functions