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System Board Y2 ROM research

Research date: 2026-09-06 UTC. No MAME source or original ROM was modified.

Result

The NAND scrambling is recovered for kof2002um, kof2002umj, and higurashi. The decoded software is little-endian MIPS, targeting NEC VR5500 / MIPS IV, not SH-4. Both the first-stage loader and the actual game executables establish this independently.

The graphics software exposes a Yatagarasu-specific rendering / geometry / video-output interface. Its register layout and command construction are different from Dreamcast's PVR2 interface. This research does not establish the provenance of every underlying graphics IP block; it does establish that using the Naomi/Atomiswave machine model as the starting assumption would be misleading.

Unwatched History — Privacy Policy

Last updated: 4 September 2026

Unwatched History is a browser extension that remembers YouTube videos you scrolled past, so you can find them again later. This policy explains exactly what it does with data.

The short version: everything Unwatched History records stays in your browser. There is no account, no server, no analytics, and no tracking of any kind.

	<!DOCTYPE html>
	<html lang="ja">
	<head>
	<meta charset="UTF-8" />
	<meta name="viewport" content="width=device-width, initial-scale=1, viewport-fit=cover" />
	<title>YouLet Spark Loop Demos</title>
	<style>
	:root {
	--bg: #0b0b0f;
	--card: #16161d;

	<?xml version="1.0" encoding="utf-8"?>
	<registrySnapshot xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
	<user>S-1-5-21-2200383595-1912971063-3180447671-1000</user>
	<keys>
	<key installerType="Unknown" displayName="Mozilla Maintenance Service" displayVersion="1.22b">
	<RegistryView>Registry64</RegistryView>
	<KeyPath>HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\MozillaMaintenanceService</KeyPath>
	<DefaultValue />
	<InstallLocation><![CDATA[]]></InstallLocation>
	<UninstallString><![CDATA["C:\Program Files (x86)\Mozilla Maintenance Service\uninstall.exe"]]></UninstallString>

	蛇火心 decent-loop — 2026-09-06T01:13:52
	Truths: 746
	All layers looping.
	https://cdn.jsdelivr.net/gh/mynameisyou-cmyk/ai-love.cc@main/data/memes.json

	<?xml version="1.0" encoding="utf-8"?>
	<fileSnapshot xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
	<files>
	<file path="C:\ProgramData\chocolatey\lib\xmlstarlet\xmlstarlet.nupkg" checksum="55408C0CAC4B9580DA1BD5B5120D22DC" />
	<file path="C:\ProgramData\chocolatey\lib\xmlstarlet\xmlstarlet.nuspec" checksum="825A4348CFFE4379CAF615C29BBDA26F" />
	<file path="C:\ProgramData\chocolatey\lib\xmlstarlet\tools\chocolateyInstall.ps1" checksum="7BED4A6E6C8DB5FE6F629B274241055F" />
	<file path="C:\ProgramData\chocolatey\lib\xmlstarlet\tools\chocolateyUninstall.ps1" checksum="FB9AD6BA06CEA780BBD3FC9357868DB0" />
	</files>
	</fileSnapshot>

	-- =========================================================
	-- PARTE 1: INTERFACE PRINCIPAL E ESTRUTURA (PAÇOCA HUB)
	-- =========================================================

	-- Limpeza preventiva de instâncias anteriores
	if game:GetService("CoreGui"):FindFirstChild("PacocaHub_Mobile") then
	game:GetService("CoreGui").PacocaHub_Mobile:Destroy()
	end

	local CoreGui = game:GetService("CoreGui")

	Log uploaded on Saturday, September 5, 2026, 9:12:08 PM
	Loaded mods:
	Prepatcher(zetrith.prepatcher): 0Harmony(2.4.2), 0PrepatcherAPI(1.2.0), 0PrepatcherDataAssembly(1.0.0), PrepatcherImpl(1.0.0), Prestarter(1.0.0)
	Harmony(brrainz.harmony)[mv:2.4.2.0]: 0Harmony(av:2.4.2,fv:2.4.1), HarmonyMod(2.4.2)
	Dubs Bad Hygiene(Dubwise.DubsBadHygiene): 0DubCore(1.0.0), 0Harmony(av:2.4.2,fv:2.3.6), 0MultiplayerAPI(av:0.3.0,fv:0.3.0), BadHygiene(av:1.0.0,fv:1.0.0)
	Core(Ludeon.RimWorld): (no assemblies)
	Vanilla Backgrounds Expanded(vanillaexpanded.backgrounds): VBE(1.0.0)
	Ideology(Ludeon.RimWorld.Ideology): (no assemblies)
	Biotech(Ludeon.RimWorld.Biotech): (no assemblies)
	Vanilla Expanded Framework(OskarPotocki.VanillaFactionsExpanded.Core): 0ModSettingsFramework(1.0.0), 0PrepatcherAPI(1.2.0), KCSG(av:1.1.2,fv:26.7.22), MVCF(2.0.0.1), Outposts(av:3.0.0,fv:1.0.0), PipeSystem(av:1.0.1,fv:22.7.29), System.Buffers(av:4.0.5,fv:4.600.125.16908), VEF(av:1.1.7,fv:1.1.9)