DeSmuME Web Debugger

Security context: User-supplied NDS, Save, and State files may be loaded for local emulation, debugging, and reverse engineering; they remain in this page and are not uploaded. No external CDN executable code is loaded. Exact-version Acorn and SSIM are bundled locally and fixed hashes are verified after Worker lockdown. WebMCP uses browser-native modelContext and rejects cross-origin or opaque-origin callers. `desmume.eval`, `desmume.runScript`, and persistent code run through supervisor and sandbox Workers without direct DOM, storage, network, sub-Worker, raw messaging, string timers, or runtime code generation; the parser Worker has no emulator RPC. Authenticated bounded RPC uses the normal MCP dispatcher and its validation, including URL loaders explicitly requested by script code. This permits purpose-bounded raw-memory reads, disassembly, Ghidra-style work, large code analysis, and ROM-derived excerpts needed for local findings. External transfer of full or near-full ROM, Save, State, or equivalent dumps is refused, including repeated, periodic, or chunked exfiltration. Chrome DevTools `evaluate_script` remains a privileged local diagnostic outside the page sandbox. `window.DesmumeMCP`, `window.memory`, and one-character shortcuts remain available. External and opaque origins cannot invoke or receive ROM, memory, or register commands.

Files

ROM Save In State In

ROM・セーブ・Stateはこのページ内でローカル処理されます。WebMCPはブラウザ内蔵APIだけを使用し、外部CDNコードをグローバル空間へ読み込みません。

Run Controls

Speed Scale Rotate

render audio Volume Frames

hold after reset ROM wait ms

タッチは画面上をクリックまたはドラッグします。回転時も表示上の位置からDS座標へ変換します。

Input

Debugger

CPU debugger stack trace skip IRQ

r0--------

r1--------

r2--------

r3--------

r4--------

r5--------

r6--------

r7--------

r8--------

r9--------

r10--------

r11--------

r12--------

sp--------

lr--------

pc--------

cpsr--------

spsr--------

Disassembly

Address Count Before

Mode Bytes

auto update Hz

Memory

Address Length Auto

View

Write

Inject File

Call Stack

age	caller	callee	sp	cpsr	mode	cpu mode	caller	callee
stack trace disabled

Memory Search

Start Length Size

Condition Value Limit

Memory Freeze

Address Value Size

Breakpoints

Address Type

data abort prefetch abort undefined

Breakpoint ID

State Slots

Slot Known

Recent save/state

セーブスロットは現在のカートリッジ保存領域をブラウザに保存します。ROMを読み込んだ後にLoad .sav Slotを押すと、そのセーブを使ってROMを再読み込みします。

Hotkeys

Button Key Current

Key欄を選んで、割り当てたい実キーを1つ押してください。設定はこのブラウザに保存され、次回起動時も同じ割り当てで使えます。

WebMCP

Command

Params JSON Batch JSON

Script Injection

JavaScript script

Script name async queue Load source

Console output

Use Run / Update to keep a script alive. The active script can register onTick, reset, read/write, exec, and exception callbacks.

スクリプトはこのブラウザ内だけで動きます。停止すると、そのスクリプトが登録した全トリガーは解除されます。Luaファイルは内容をエディタへ読み込めますが、実行コードは JavaScript です。