Chapter 6 — Text on the LCD
This chapter will introduce the TEC-1G LCD as the first friendly output device.
Planned coverage:
- writing a character through MON-3
- writing a zero-terminated string through MON-3
- sending an LCD command through MON-3
- row positioning and useful row constants
- when to use the LCD for instructions, status, and mode text
- what the HD44780 instruction and data ports are doing underneath
- the point where direct LCD port access becomes useful
The case-study games use the LCD for splash screens, status messages, pause/game-over text, and instructions. That makes it a good output channel for teaching program state before using matrix pixels.