X-Hacker.org- Interrupts & Ports

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        Free memory (INT 21h, 49h)

        Entry:
          AH = 49h
          ES = Segment address of area to be freed
        Return:
          CF = 1 if error
                  AX = Error Code

See Also: INT 21h, 48h INT 21h, 4Ah INT 21h, 58h Error codes

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