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    {
    Well, there are two basic ways of using Graphics mode.
    1) Use the BIOS routines to enter this mode.
    2) Use the BGI (Borland Graphics Interface) used With the Graph Unit
       and the appropriate BGI File (as mentioned by you).

    Since you intend to display PCX Files, I guess you have no business
    with the Graph Unit and the BGI, so I suggest the first way.

    Example:
    }

    Program Enter256;

    Uses
      Dos;

    Var
      Regs : Registers;

    begin
      Regs.Ah := 0;
      Regs.Al := $13;
      Intr($10, Regs);

      Readln;
    end.

    {
      At the end of this Program you will be in 320x200 256 color mode.
    }

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