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Annotation of os2sdk/demos/examples/iopl/ioplmain.c, revision 1.1

1.1     ! root        1: /* This example illustrates the use of an IOPL segment. This program
        !             2:  * gets the cursor location by calling a routine running at I/O
        !             3:  * privilege level and prints it on the screen.
        !             4:  *
        !             5:  * This needs to run on a CGA compatible display.
        !             6:  *
        !             7:  * Copyright (C) Microsoft Corp. 1986
        !             8:  */
        !             9: 
        !            10: #define        COLUMNS 80                      /* number of columns on CRT screen   */
        !            11: 
        !            12: unsigned far GetCurLoc();              /* gets cursor position on CRT screen*/
        !            13: 
        !            14: main()
        !            15: {
        !            16:        unsigned Cursor;                        /* will hold cursor position */
        !            17: 
        !            18:        Cursor = GetCurLoc();
        !            19:        printf ( "cursor location: row = %u, column = %u\n", 
        !            20:                  (Cursor/COLUMNS)+1, (Cursor % COLUMNS)+1);
        !            21: }

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