Int 15 Fn D802  - Eisa System ROM - Clear Nonvolatile Memory (eisa Cmos)   [X]

   AX = D802h
   BH = EISA config utility major revision level
   BL = EISA config utility minor revision level

Return: CF clear if successful
       AH = 00h
   CF set on error
       AH = error code
       84h error clearing CMOS
       86h invalid BIOS-FW function call
       88h config utility version not supported

Note:  call with AL=82h if using 32-bit CS addressing mode instead of 16-bit

See Also: AX=D803h