Function            read_cursor - reads cursor information

  Syntax              unsigned int read_cursor(int *row, int *col);

  Prototype in        video.h

  Remarks             reads the cursor location and scan lines via
                      INTerrupts.

  Return value        returns the scan lines of the cursor as a word, the
                      high order byte the start and low order byte the
                      end.

  See also            cursor_blink(), cursor_flip(), cursor_off(),
                      cursor_on(), getcursor(), set_cursor(),
                      setcursor(), whereh(), wherev()

  Example             #include <video.h>

                      main()
                      {
                           int x,y;
                           unsigned int scan;

                           scan = read_cursor(&x,&y);
                           printf("Scan start %d and end %d\n",
                                scan&0xFF00, scan&0xFF);
                      }

  Program output      Scan start 6 and end 7         /* on CGA */