Int 2F Fn 4A06  CU - Dos 5+ - Dos Supervisor "reboot Panel" - Adjust Memo  [D]

   AX = 4A06h
   DX = segment following last byte of conventional memory

Return: DX = segment following last byte of memory available for use by DOS
Desc:  used to override the default memory size when booting diskless
     workstations

Notes: called by MS-DOS 5+ IO.SYS startup code if the signature "RPL" is
     present three bytes beyond the INT 2F handler; this call overrides
     the value returned by INT 12
   hooked by RPL code at the top of memory to protect itself from being
     overwritten; DOS builds a memory block with owner = 0008h and name
     "RPL" which must be freed by the RPL code when it is done

See Also: INT 12"BIOS",INT 18"BOOT HOOK"