Int 32 Fn 6E11  - Noise.sys V0.53+ - Get Entropy Estimate                  [y]

   AX = 6E11h

Return: CF set on error
       AL = error code (00h,FDh,FEh) (see #2837)
   CF clear if successful
       EBX = estimated bit count (refer to note below)
       CL = FRACBITS (number of fractional bits)
       EDX = low 32-bits of total number of samples added

Note:  the estimated number of fresh random bits is equal to
     (EAX >> FRACBITS) + ((EAX & ((1 << FRACBITS)-1) / (1 << FRACBITS))

See Also: AH=6Eh,AX=6E00h