Int 2F/AX=4309h

HIMEM.SYS v3.09+ - GET XMS HANDLE TABLE

AX = 4309h

Return:
AL = 43h if function supported
ES:BX -> XMS handle table (see #02747)

Note: HIMEM.SYS v3.09 is part of MS-DOS 6.0.

See Also: AX=4308h


Format of XMS handle table:

Offset  Size    Description     (Table 02747)
00h    BYTE    ??? (01h in HIMEM.SYS v3.09)
01h    BYTE    size of one handle descriptor
02h    WORD    number of handles (default = 20h)
04h    DWORD   pointer to XMS handle array (see #02748)

See Also: #02777


Format of XMS handle descriptor [array]:

Offset  Size    Description     (Table 02748)
00h    BYTE    flag
01h=free, 02h=used, 04h=in pool but not associated with any EMB
01h    BYTE    lock count (00h=unlocked)
02h    DWORD   address of XMS block in KB (shift left by 10 for abs. address)
06h    DWORD   size of XMS block in KB

Category: Memory Management - Int 2Fh - H

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