Compatibility: DPMI 1.0+
Expects: AX     0506H
ESI    memory block handle (as obtained via INT 31H 0504H)
EBX    base offset of page(s) of interest
ECX    number of pages
ES:EDX address of buffer to receive returned information
Returns: CF    NC (clear) if successful; else AX = DPMI Error Code
ES:EDX buffer contained returned info
Info: This obtains the information about one or more pages of linear
memory allocated via INT 31H 0504H.

ES:EDX on return, this buffer will be filled with ECX 16-bit values
formatted as follows:
 5  -  7 6 5 4 3 2 1 0 
 0 ... 0 m a f w  type 
    -                   bit  mask
               0-2: 0007H 0=uncommitted; 1=committed
                          2=mapped;3=unmapped;4-7 (res)
                 3: 0008H 1=read/write; 0=read-only
                 4: 0010H 1=access flags are in 6-6
                 5: 0020H 1=page has been accessed
                 6: 0040H 1=page has been modified

See Also: DPMI API
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INT 31H 0506H: Query Page Attributes