Int 15 Fn E801  - Phoenix Bios V4.0 - Get Memory Size For >64m Configurat  [b]

   AX = E801h

Return: CF clear if successful
       AX = extended memory between 1M and 16M, in K (max 3C00h = 15MB)
       BX = extended memory above 16M, in 64K blocks
       CX = configured memory 1M to 16M, in K
       DX = configured memory above 16M, in 64K blocks
   CF set on error

Notes: supported by the A03 level (6/14/94) and later XPS P90 BIOSes, as well
     as the Compaq Contura, 3/8/93 DESKPRO/i, and 7/26/93 LTE Lite 386 ROM
     BIOS
   supported by AMI BIOSes dated 8/23/94 or later
   this interface is used by Windows NT 3.1, OS/2 v2.11/2.20, and is
     used as a fall-back by newer versions if AX=E820h is not supported

See Also: AH=8Ah"Phoenix",AX=E802h,AX=E820h,AX=E881h"Phoenix"