A developer implements a 6502 microprocessor emulator in Markdown that executes via an LLM (GLM 5.1 on Grunden.ai), treating Markdown as machine code. The emulator simulates the classic 8-bit processor used in 1980s computers like the Commodore 64 and Apple II, complete with registers, memory addressing, and a fetch-decode-execute cycle.
An article explaining systematic techniques for generating cycle-exact delay sequences on 8-bit CPUs (6502, 6809, Z80, SM83, 8080, 6800). The author describes a general method using tight delay loops with the formula An + B, combined with lookup tables for remainders, to achieve precise timing for sound generation and graphical effects.