2.3 Core Value Proposition

D3-TUI provides: 1. Native terminal interface for Dreamcast development and debugging 2. Hardware-accurate rendering via PVR2 3. Text-based UI framework for system tools 4. Integration with VMU for portable display and input 5. Foundation for TUI-based applications on Dreamcast

3. Scope Definition

3.1 In Scope

• C99 implementation on KOS
• Text rendering via PVR2
• Terminal emulation (ANSI/VT100 subset)
• VMU display integration
• Controller input handling
• Memory-constrained design (16MB RAM target)
• Integration with SPECTRE specs (VMU, SH4 Math, Asset formats)