Alphnumeric Display
NORMAL
00	Undefined
01	Alphanumeric Display
02-1F	Reserved
20	Display Attributes Report
21	ASCII Character Set
22	Data Read Back
23	Font Read Back
24	Display Control Report
25	Clear Display
26	Display Enable
27	Screen Saver Delay
28	Screen Saver Enable
29	Vertical Scroll
2A	Horizontal Scroll
2B	Character Report
2C	Display Data
2D	Display Status
2E	Stat Not Ready
2F	Stat Ready
30	Err Not a loadable character
31	Err Font data cannot be read
32	Cursor Position Report
33	Row
34	Column
35	Rows
36	Columns
37	Cursor Pixel Positioning
38	Cursor Mode
39	Cursor Enable
3A	Cursor Blink
3B	Font Report
3C	Font Data
3D	Character Width
3E	Character Height
3F	Character Spacing Horizontal
40	Character Spacing Vertical
41	Unicode Character Set
42-FFFF	Reserved