Int 21 Fn 25C0  P - Phar Lap 386/dos-extender - Allocate MS-dos Memory Bl  [E]

   AX = 25C0h
   BX = number of 16-byte paragraphs of MS-DOS memory requested

Return: CF clear if successful
       AX = real-mode paragraph address of memory
   CF set on error
       AX = error code
       07h MS-DOS memory control blocks destroyed
       08h insufficient memory
       BX = size in paragraphs of largest available memory block

See Also: AX=25C1h,AX=25C2h