Kajar notes of ChronoRET, rebuilding Chrono Trigger one matched routine at a time

Crono · 1000 AD Home

The Journey

Devlog Gallery Progress

Systems

Overview Boot Frame cycle & NMI Engine core Field event scripts Sprites & objects Scene engine Text windows Menu Battle engine Battle actions Battle menu Battle targeting Status bar & text

How It Works

Architecture ROM Map Sprite Init Explainer Target ROM

For Time Travelers

Contributing asar Quirks Glossary CI Setup

Credits

Party Status

HP 249,251/249,251

code bytes matched · 100.0% of code · 23,638 B data

MP 3736/3736

functions readable

TP 3736/3736

functions verified

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Sessions

14 August 2026: opening bank C1, from the math helpers to the battle windows

battle-ui

2026-08-14

14 August 2026: opening bank C1, from the math helpers to the battle windows

Bank $C1, the battle engine, is open. In one day it went from an empty file to 4,085 matched bytes: math and number formatting, the battle status bar and all its callees, the item and tech list renderers, and the per-frame window upkeep. 33 functions over sessions 34 to 40, plus a root-cause fix in the disassembler.

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