Int 15 Fn 08  - Ibm Surepath Bios - Wait Requested Time Period             [B]

   AH = 08h
   AL = function
       00h wait in increments of 15.025 microseconds
       CX = number of time increments to wait (0000h = maximum)
       80h wait in increments of 840 ns
       ECX = number of time increments to wait
       81h I/O event wait
       BH = bitmask of bits to check
       BL = expected pattern
       DX = I/O port address
       ECX = number of 840 ns microticks to wait

       Return: ECX = 00000000h if expected pattern did not occur
       82h memory event wait
       BH = bitmask of bits to check
       BL = expected pattern
       ES:SI -> BYTE to check
       ECX = number of 840 ns microticks to wait

       Return: ECX = 00000000h if expected pattern did not occur
       other reserved

Return: CF clear if successful
   CF set on error
   AH = status
       00h successful
       01h used 15.025 microsecond interval, time rounded up
       08h reserved subfunction
       86h function not supported

Notes: IBM classifies this function as optional
   if the POST determines that the timer is nonfunctional, this function
     uses the 15.025 microsecond refresh timer instead of the
     full-resolution timer

See Also: AH=07h"IBM",AH=09h"IBM",AH=86h