SCREEN

Format

SCREEN number1

Description

This statement will transfer the computer between text mode and graphics modes. Number1 must be an integer constant with a value of 0, 1, 2, 7, 9, or 13. These modes are described in the table below. The "Mode" column identifies the value of number1 to specify on the SCREEN command to select that graphics mode. The "Graphics Resolution" column has three numbers. The first identifies the number of rows of pixels supported in this mode. The second number identifies the number of columns. The third number identifies the number of colors which may displayed on screen at one time. The numbers in the "Text Resolution" column tell you how many rows, columns and colors you may display on the screen when displaying text. The adapters column identifies the type of graphics adapter required to use this mode.
     Mode      Graphics Resolution      Text Resolution     Adapters
     -----     -------------------      ---------------     -------
       0       None                     25 x 80 x 16        Any Adapter
       1       200 x 320 x 4            25 x 40 x 4         CGA/EGA/VGA
       2       200 x 640 x 2            25 x 80 x 2         CGA/EGA/VGA
       7       200 x 320 x 16           25 x 40 x 16        EGA/VGA
       9       350 x 640 x 16           25 x 80 x 16        EGA/VGA
      13       200 x 320 x 256          25 x 40 x 16        VGA

Example

SCREEN 13
After execution of this statement, the PC will be in Graphics Mode 13 which will allow you to display 200 rows by 320 columns of pixels in 256 different colors. Up to 25 rows and 80 columns of text can be displayed in up to 256 colors. And finally, mode 13 requires a VGA Graphics Card.

Comments

Any program which uses the SCREEN command should issue a "SCREEN 0" command before terminating. Otherwise, the screen will not be reset properly when you return to DOS.

See Also

  • PSET
  • PRESET
  • POINT
  • ZMODE