Int 67 Fn 5D04  - Nanosoft Md386 - Get Alternate Map Structure             [m]

   AX = 5D04h
   BX = alternate register set number
   ES:DI -> 1024-byte buffer for map structure

Return: AH = status (see #3319)
   buffer filled if AH=00h

Note:  used for debugging purposes

See Also: AX=5D05h