Startup code

Address	Description
80CC	Copy data from a row of the screen
81C8	Start
D700	Logo, icon panel and score box graphic data (segment 1/5)
D800	Logo, icon panel and score box graphic data (segment 2/5)
D900	Logo, icon panel and score box graphic data (segment 3/5)
DA00	Logo, icon panel and score box graphic data (segment 4/5)
DB00	Logo, icon panel and score box graphic data (segment 5/5)
DD00	Prepare the bottom 4 lines of the screen