|1||Horizontal Displayed||Write Only||Write Only||Write Only||(note 2)
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|2||Horizontal Sync Position||Write Only||Write Only||Write Only||(note 2)
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|3||Horizontal and Vertical Sync Widths||Write Only||Write Only||Write Only||(note 2)
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|4||Vertical Total||Write Only||Write Only||Write Only||(note 2)
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|5||Vertical Total Adjust||Write Only||Write Only||Write Only||(note 2)
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|6||Vertical Displayed||Write Only||Write Only||Write Only||(note 2)
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|7||Vertical Sync position||Write Only||Write Only||Write Only||(note 2)
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|8||Interlace and Skew||Write Only||Write Only||Write Only||(note 2)
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|9||Maximum Raster Address||Write Only||Write Only||Write Only||(note 2)
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|10||Cursor Start Raster||Write Only||Write Only||Write Only||(note 2)
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|11||Cursor End Raster||Write Only||Write Only||Write Only||(note 2)
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|12||Display Start Address (High)||Read/Write||Write Only||Write Only||Read/Write||(note 2)
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|13||Display Start Address (Low)||Read/Write||Write Only||Write Only Read/Write||(note 2)
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|14||Cursor Address (High)||Read/Write||Read/Write||Read/Write||Read/Write||(note 2) ***check
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|15 ||Cursor Address (Low) Read/Write Read/Write Read/Write Read/Write (note 2) **check
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|16 ||Light Pen Address (High) Read Only Read Only Read Only Read Only (note 2) **check
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|17 ||Light Pen Address (High) Read Only Read Only Read Only Read Only (note 2) **check
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