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thejayman77 ec82764bef Initial commit: retroDE_ps2 — first-of-its-kind PS2 GS FPGA core (DE25-Nano / Agilex 5)

RTL (GS rasterizer, EE core stub, platform bridge, LPDDR4B path), sim regression
(272 TBs), docs, and tooling. Copyrighted PS2 content (BIOS, game code, GS dumps,
and all dump-derived textures/traces) is excluded via .gitignore and stays local.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

2026-06-29 20:10:50 -04:00

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Source Log

Research pass date: 2026-04-16

This log records the main sources used to build the planning notes in this folder.

Hardware and low-level behavior

ps2tek - Documentation on PS2 internals URL: https://psi-rockin.github.io/ps2tek/index.html Notes: best low-level consolidated hardware reference found in this pass; useful for memory map, register blocks, BIOS structure, IOP boot modules, DMA channels, and subsystem inventory.
Making a PS2 Emulator: From Bits to Pixels URL: https://github.com/PSI-Rockin/DobieStation/wiki/Making-a-PS2-Emulator%3A-From-Bits-to-Pixels Notes: strong practical explanation of the minimum pieces needed for first visible output; especially helpful for framing memory map + DMAC + GIF + GS.

SDK, tooling, and software-visible platform shape

ps2dev URL: https://ps2dev.github.io/ Notes: community entry point for PS2 homebrew development.
ps2dev/ps2dev URL: https://github.com/ps2dev/ps2dev Notes: active toolchain/build umbrella for ps2toolchain, ps2sdk, ps2sdk-ports, and gsKit.
ps2dev/ps2sdk URL: https://github.com/ps2dev/ps2sdk Notes: important because it exposes the software-facing EE/IOP split and offers samples and platform libraries.
ps2dev/gsKit URL: https://github.com/ps2dev/gsKit Notes: low-level GS interface library; useful for understanding software-side GS initialization and DMAC usage.

Emulator projects

PCSX2/pcsx2 URL: https://github.com/PCSX2/pcsx2 Notes: deepest and longest-running open-source PS2 emulator in this pass.
PCSX2 Memory.cpp URL: https://raw.githubusercontent.com/PCSX2/pcsx2/master/pcsx2/Memory.cpp Notes: useful implementation-side memory summary and a signpost for how a mature emulator structures host-visible EE/IOP/VU memory.
PSI-Rockin/DobieStation URL: https://github.com/PSI-Rockin/DobieStation Notes: helpful as a second emulator reference and because it publishes useful implementation commentary.
jpd002/Play- URL: https://github.com/jpd002/Play- Notes: useful contrasting design point; uses a built-in HLE BIOS rather than external BIOS dumps.

Search outcome note

I specifically looked for credible open-source HDL / FPGA PS2 core material. This pass did not surface a meaningful public RTL implementation. The strongest public sources that appeared were emulator codebases, PS2 homebrew tooling, and reverse-engineering references.

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