z80

A comprehensive reverse engineering of the TI-84 Plus OS, documenting memory mapping, paging, system calls, interrupts, floating-point engine, variable system, tokenizer, and I/O subsystems.

A blog post exploring how to use a Raspberry Pi Pico RP2350 with PIO to monitor the address and data buses of a Z80 microprocessor, including timing considerations and clock speed limits.

Boriel BASIC is a modern, open-source BASIC compiler SDK designed primarily for the ZX Spectrum, offering enhanced features, integer types, and inline assembly support for retro game development.