|12||Display Start Address (High)||xx000000||32
|-
|13||Display Start Address (Low)||00000000||0||Allows you to offset the start of screen memoryfor hardware scrolling, useful when and if using memory from address &0000with the firmware.
|-
|14||Cursor Address (High)||xx000000||0
|-
|15||Cursor Address (HighLow)||00000000||0
|-
|16||Light Pen Address (High)||xx000000||||Read Only
|-
|17||Light Pen Address (HighLow)||00000000||||Read Only
|-
|}