Developing a custom Z80 game engine for TI-83 Plus hardware using z88dk, with hand-written assembly for interrupt handling, RAM paging, and flash memory management
Implemented 4-level greyscale rendering on a 1-bit display via timed buffer swapping and crystal-timer-driven interrupts (~60 Hz)
Built cooperative multitasking runtime with separate game-loop and compositor tasks under strict memory and cycle constraints
Designed room/object architecture with Python code generation for multi-page ROM layout and scalable content structure
Optimized hot paths by relocating critical routines to executable RAM and tuning interrupt dispatch for audio, display, and game tick
