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Step 6. Calculate the size of VRAM and the size of the table stored in VRAM, and confirm that the table can be stored in VRAM.

• VRAM size
• Character pattern (number and size)
• Pattern name table (number and size)
• Bitmap pattern (number and size)
• Line scroll table
• Vertical cell scroll table
• Rotation parameter table
• Coefficient table
• Line color screen table
• Back screen table
• Line window table

Step 7. Select to use VRAM.

• VRAM bank division
• VRAM access method

Step 8. Create a character pattern and pattern name table.

• Selects the character number auxiliary mode.
• Sets the reverse function bit.
  Creates a bitmap pattern for the bitmap format.

Step 9. Create other VRAM tables.
Step 10. Define priority and color operations taking into account sprite data.
Step 11. Set special functions.

• Special function code
• Special priority function
• Extended color calculation function
• Blur calculation function
• Color offset function
• Shadow function (Normal, MSB)

Step 12. Consider the story, reconfigure the screen, redefine and reconfigure VRAM and registers.

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