SandboxSX2

🌍 Vision: Universal Access

Most emulators prioritize Snapdragon flagships, leaving millions of players excluded. SandboxSX2 takes a different path — one built on accessibility, safety, and respect for device limits.

• Universal Processor Support → Works on any ARM or x86 CPU, without chipset lock‑ins.
• Inclusive Design → Runs on Android 6.0+, including Android Go Edition.
• Safety & Stability → Sandboxed execution model avoids unsafe native execution and overheating.

🔒 Why SandboxSX2 Is Safe

• Sandboxed Core Execution → Controlled sandbox limits system access.
• Predictable Resource Usage → No unsafe JIT tricks, no forced overclocks.
• Thermal & Battery Friendly → Stable operation reduces overheating and battery stress.
• No System Modification → No root, no kernel changes, runs entirely in user space.
• Privacy‑First → No ads, trackers, or hidden network activity.

🚀 SandboxSX2 v0.7 Features

• Interrupt Framework (INTC) fully implemented — CPU can handle software-level interrupts.
• Hardware Timers refined for accurate scheduling using clock dividers.
• DMA subsystem upgraded — Source Chain mode and full DMAtag (CNT, NEXT, END) support.
• EE and IOP cores synchronized with precise 8:1 clock ratio for stable timing.
• Live debug overlay shows PC, cycles, GIF activity, and subsystem status.
• Compatible with low-end devices while maintaining stability and safe resource usage.
• Foundation laid for GS rendering and Hybrid JIT in v0.8.

📂 Project Structure

• app/ → Android front‑end (Jetpack Compose UI)
• jni/ → Native C++ core
• bios/ → User BIOS files
• README.md → Project overview
• index.html → SandboxSX2 landing page

⚠️ BIOS Requirements

To run SandboxSX2, you only need the official PS2 BIOS .bin file — this is enough to start the VM loop and see the live debug.
Other files like ROM1, ROM2, EROM, NVM, or MEC are optional. If you don’t have them, the emulator will still work, but some games or features may not be fully compatible.

Tip: Use a file manager (like ZArchiver) to copy your BIOS file into Android/Data/com.maxrblx1.sandboxsx2/files/ps2_bios.

📱 System Requirements

Android → 6.0+ (including Android Go Edition)
Processor → Universal ARM/x86 support
RAM → 2 GB minimum, up to 16 GB supported

🚀 Roadmap

v0.1 → EE CPU skeleton ✅
v0.2 → Instruction decoder + BIOS loader ✅
v0.3 → Memory map ✅
v0.4 → GS / IOP / SPU2 stubs ✅
v0.5 → Full VM loop ✅
v0.6 → Instruction semantics (ADD, SUB, MULT, DIV, Branches, Memory Access…) ✅
v0.7 → Interrupts, Timers & DMA Refinement ✅
v0.8 → GS Rendering + Hybrid JIT 🌌
v0.9 → SPU2 Audio + IOP Expansion 🌌
v1.0 → Public Beta Release (Playable) 🌌

👤 About the Developer

SandboxSX2 is built entirely by MaxRBLX1 — a solo developer focused on ethical emulation, low‑end accessibility, and transparent engineering.

📜 License

MIT License — free to use, modify, and share.

📥 Installation

1. **Download** the latest APK from GitHub Releases.
2. **Install** the APK on your Android device (enable “Install from Unknown Sources” if needed).
3. **Open SandboxSX2 once** to let it create the necessary folders.
4. **Copy your PS2 BIOS .bin file**: - Use a file manager like **ZArchiver** (or any file manager you prefer).
- Go to your **Downloads** folder, hold or tap your `.bin` file, and choose **Copy**.
- Paste it into: Android/Data/com.maxrblx1.sandboxsx2/files/ps2_bios.
- If you don’t have a BIOS yet, you can download a free PS2 BIOS from the internet (official PS2 BIOS required for legal use).
5. **Launch SandboxSX2**, tap Setup BIOS, then tap Start Engine.
⚠️ Reminder: v0.7 currently **only loads the BIOS and runs the VM with live debug**. Games are not playable yet — full gameplay will come in v1.0.