Int 2F/AX=4A04h

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Windows95 - DOS KERNEL - GET START OF HMA MEMORY CHAIN

AX = 4A04h

Return:
AX = 0000h if function supported ES:DI -> first HMA memory control block (see #02800)

Format of Windows95 HMA memory control block: Offset Size Description (Table 02800) 00h 2 BYTEs signature "MS" (4Dh 53h) 02h WORD segment of owner (or segment at which to address block???) 0000h = free 0001h = DOS??? FF33h = IO.SYS FFFFh = MSDOS.SYS 04h WORD size of memory block (not including this header) 06h WORD offset of next memory block in segment FFFFh, or 0000h if last 08h 8 BYTEs unused (explicitly set to 0 for MS-DOS 7.10)

Category: DOS Kernel - Int 2Fh - W

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