pokesave-cathode

Sat, 04 Jul 2026 00:00:00 +0000

Overview

A native save editor for the Pokémon Cathode romhack. Built on Tauri 2 (Rust backend + system webview frontend) so the binary is small, fast, and feels native on every OS. The save parser is clean-room, sourced from the romhack’s own headers and data files — no vendored dependencies on Emerald libraries that don’t know about Cathode’s custom flag block, custom moves, custom maps, or custom trainers.

What it does

Open any .sav written by a Pokémon Cathode playthrough on real hardware or in an emulator
Edit your party, PC boxes, items, money, trainer card, Pokédex, event flags, badges, time played
Edit Cathode-specific state: Cathode flag block (0x4A0–0x4BF), MOVE_METEOR_MIND availability, TRAINER_VEX defeat, custom maps unlocked, custom items
Validate the save (checksum + sector signature + slot counter) on open and on every save
Round-trip safe: editor edits don’t introduce drift; checksum and slot counter are recomputed correctly so the game reads the save as native

Why a dedicated editor

The romhack introduces a Cathode flag block at offsets 0x4A0–0x4BF and several custom items / moves / trainers that the vanilla Emerald save libraries don’t understand. Reusing a vanilla save editor would silently corrupt or silently drop the Cathode-specific state. This editor’s parser is sourced directly from the romhack’s headers, so it knows about every field that matters to a Cathode playthrough.

Save-Editor on Herman

pokesave-cathode

Overview

What it does

Why a dedicated editor