The steps for defining a basic playfield are summarized below:

1. Define Playfield Characteristics
   --------------------------------
   a.  Specify color  for each pixel:

      * Load desired colors in color table registers.

      * Define color of each pixel in terms of the binary value
        that points at the desired color register.

      * Build bitplanes and set bitplane registers:

           Bits 12-14 in  BPLCON0  - number of bitplanes ( BPU2 - BPU0 ).
            BPLxPTH  - pointer to bitplane starting position in memory
	               (written as a long word).

   b.  Specify resolution :

      * Low resolution:

          320 pixels in each horizontal line.
          Clear bit 15 in register  BPLCON0  ( HIRES ).

      * High resolution:

          640 pixels in each horizontal line.
          Set bit 15 in register  BPLCON0  ( HIRES ).

   c.  Specify interlaced or non-interlaced mode :

      * Interlaced mode:

          400 vertical lines for NTSC, 512 for PAL.
          Set bit 2 in register  BPLCON0  ( LACE ).

      * Non-interlaced mode:

          200 vertical lines for NTSC, 256 for PAL.
          Clear bit 2 in  BPLCON0  ( LACE ).

2.  Allocate Memory . To calculate data-bytes in the total bitplanes,
   -----------------  use the following formula:

          Bytes per line * lines in playfield * number of bitplanes

3.  Define Size of Display Window .
   -------------------------------
   * Write start position of display window in  DIWSTRT :

      Horizontal position in bits 0 through 7 (low order bits).
      Vertical position in bits 8 through 15 (high order bits).

   * Write stop position of display window in  DIWSTOP :

      Horizontal position in bits 0 through 7.
      Vertical position in bits 8 through 15.

4.  Define Data Fetch . Set registers  DDFSTRT  and  DDFSTOP :
   -------------------
   * For  DDFSTRT , use the horizontal position as shown in
      Setting the Display Window Starting Position .

   * For  DDFSTOP , use the horizontal position as shown in
      Setting the Display Window Stopping Position .

5.  Define Modulo . Set registers  BPL1MOD and BPL2MOD .  Set modulo to 0
   ---------------  for non-interlaced, 40 for interlaced.

6. Write Copper Instructions To Handle  Redisplay .
   -----------------------------------------------

7.  Enable Color Display .For the A1000: set bit 9 in  BPLCON0  to enable the
   ---------------------- the color display on a composite video monitor.
                          RGB video is not affected.  Only the A1000 has
                          color composite video output, other Amiga models
                          cannot enable this feature using standard
                          hardware.