Initial commit

tools/PicoLoaderConverter/.gitignore

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+## Ignore Visual Studio temporary files, build results, and
+## files generated by popular Visual Studio add-ons.
+##
+## Get latest from https://github.com/github/gitignore/blob/master/VisualStudio.gitignore
+
+# User-specific files
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+x86/
+[Ww][Ii][Nn]32/
+[Aa][Rr][Mm]/
+[Aa][Rr][Mm]64/
+bld/
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+[Oo]bj/
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+[Ll]og/
+[Ll]ogs/
+
+# Visual Studio 2015/2017 cache/options directory
+.vs/
+.idea/
+# Uncomment if you have tasks that create the project's static files in wwwroot
+#wwwroot/
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+# Visual Studio 2017 auto generated files
+Generated\ Files/
+
+# MSTest test Results
+[Tt]est[Rr]esult*/
+[Bb]uild[Ll]og.*
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+# NUnit
+*.VisualState.xml
+TestResult.xml
+nunit-*.xml
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+# Build Results of an ATL Project
+[Dd]ebugPS/
+[Rr]eleasePS/
+dlldata.c
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+# Benchmark Results
+BenchmarkDotNet.Artifacts/
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+# .NET Core
+project.lock.json
+project.fragment.lock.json
+artifacts/
+
+# ASP.NET Scaffolding
+ScaffoldingReadMe.txt
+
+# StyleCop
+StyleCopReport.xml
+
+# Files built by Visual Studio
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+*_p.c
+*_h.h
+*.ilk
+*.meta
+*.obj
+*.iobj
+*.pch
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+# Chutzpah Test files
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+# Visual C++ cache files
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+*.cachefile
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+# Visual Studio profiler
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+# Visual Studio Trace Files
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+# TFS 2012 Local Workspace
+$tf/
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+# Guidance Automation Toolkit
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+# ReSharper is a .NET coding add-in
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+*.[Rr]e[Ss]harper
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+# TeamCity is a build add-in
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+# DotCover is a Code Coverage Tool
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+
+# AxoCover is a Code Coverage Tool
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+!.axoCover/settings.json
+
+# Coverlet is a free, cross platform Code Coverage Tool
+coverage*.json
+coverage*.xml
+coverage*.info
+
+# Visual Studio code coverage results
+*.coverage
+*.coveragexml
+
+# NCrunch
+_NCrunch_*
+.*crunch*.local.xml
+nCrunchTemp_*
+
+# MightyMoose
+*.mm.*
+AutoTest.Net/
+
+# Web workbench (sass)
+.sass-cache/
+
+# Installshield output folder
+[Ee]xpress/
+
+# DocProject is a documentation generator add-in
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+DocProject/Help/*.HxT
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+# Click-Once directory
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+
+# Publish Web Output
+*.[Pp]ublish.xml
+*.azurePubxml
+# Note: Comment the next line if you want to checkin your web deploy settings,
+# but database connection strings (with potential passwords) will be unencrypted
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+# Microsoft Azure Web App publish settings. Comment the next line if you want to
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+# NuGet Packages
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+*.snupkg
+# The packages folder can be ignored because of Package Restore
+**/[Pp]ackages/*
+# except build/, which is used as an MSBuild target.
+!**/[Pp]ackages/build/
+# Uncomment if necessary however generally it will be regenerated when needed
+#!**/[Pp]ackages/repositories.config
+# NuGet v3's project.json files produces more ignorable files
+*.nuget.props
+*.nuget.targets
+
+# Microsoft Azure Build Output
+csx/
+*.build.csdef
+
+# Microsoft Azure Emulator
+ecf/
+rcf/
+
+# Windows Store app package directories and files
+AppPackages/
+BundleArtifacts/
+Package.StoreAssociation.xml
+_pkginfo.txt
+*.appx
+*.appxbundle
+*.appxupload
+
+# Visual Studio cache files
+# files ending in .cache can be ignored
+*.[Cc]ache
+# but keep track of directories ending in .cache
+!?*.[Cc]ache/
+
+# Others
+ClientBin/
+~$*
+*~
+*.dbmdl
+*.dbproj.schemaview
+*.jfm
+*.pfx
+*.publishsettings
+orleans.codegen.cs
+
+# Including strong name files can present a security risk
+# (https://github.com/github/gitignore/pull/2483#issue-259490424)
+#*.snk
+
+# Since there are multiple workflows, uncomment next line to ignore bower_components
+# (https://github.com/github/gitignore/pull/1529#issuecomment-104372622)
+#bower_components/
+
+# RIA/Silverlight projects
+Generated_Code/
+
+# Backup & report files from converting an old project file
+# to a newer Visual Studio version. Backup files are not needed,
+# because we have git ;-)
+_UpgradeReport_Files/
+Backup*/
+UpgradeLog*.XML
+UpgradeLog*.htm
+ServiceFabricBackup/
+*.rptproj.bak
+
+# SQL Server files
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+*.ldf
+*.ndf
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+# Business Intelligence projects
+*.rdl.data
+*.bim.layout
+*.bim_*.settings
+*.rptproj.rsuser
+*- [Bb]ackup.rdl
+*- [Bb]ackup ([0-9]).rdl
+*- [Bb]ackup ([0-9][0-9]).rdl
+
+# Microsoft Fakes
+FakesAssemblies/
+
+# GhostDoc plugin setting file
+*.GhostDoc.xml
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+# Node.js Tools for Visual Studio
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+# Visual Studio 6 build log
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+# Visual Studio 6 workspace options file
+*.opt
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+# Visual Studio 6 auto-generated workspace file (contains which files were open etc.)
+*.vbw
+
+# Visual Studio LightSwitch build output
+**/*.HTMLClient/GeneratedArtifacts
+**/*.DesktopClient/GeneratedArtifacts
+**/*.DesktopClient/ModelManifest.xml
+**/*.Server/GeneratedArtifacts
+**/*.Server/ModelManifest.xml
+_Pvt_Extensions
+
+# Paket dependency manager
+.paket/paket.exe
+paket-files/
+
+# FAKE - F# Make
+.fake/
+
+# CodeRush personal settings
+.cr/personal
+
+# Python Tools for Visual Studio (PTVS)
+__pycache__/
+*.pyc
+
+# Cake - Uncomment if you are using it
+# tools/**
+# !tools/packages.config
+
+# Tabs Studio
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+# Telerik's JustMock configuration file
+*.jmconfig
+
+# BizTalk build output
+*.btp.cs
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+# OpenCover UI analysis results
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+# Azure Stream Analytics local run output
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+# MSBuild Binary and Structured Log
+*.binlog
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+# NVidia Nsight GPU debugger configuration file
+*.nvuser
+
+# MFractors (Xamarin productivity tool) working folder
+.mfractor/
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+# Local History for Visual Studio
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+# BeatPulse healthcheck temp database
+healthchecksdb
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+# Backup folder for Package Reference Convert tool in Visual Studio 2017
+MigrationBackup/
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+# Ionide (cross platform F# VS Code tools) working folder
+.ionide/
+
+# Fody - auto-generated XML schema
+FodyWeavers.xsd
+
+# Wavefront obj resources
+!*/Resources/Models/*.obj

tools/PicoLoaderConverter/PicoLoaderConverter.sln

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+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.12.35707.178 d17.12
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "PicoLoaderConverter", "PicoLoaderConverter\PicoLoaderConverter.csproj", "{6E300AFC-8AC1-45C8-8B87-51CFED9B7DF1}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{6E300AFC-8AC1-45C8-8B87-51CFED9B7DF1}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{6E300AFC-8AC1-45C8-8B87-51CFED9B7DF1}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{6E300AFC-8AC1-45C8-8B87-51CFED9B7DF1}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{6E300AFC-8AC1-45C8-8B87-51CFED9B7DF1}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+EndGlobal

tools/PicoLoaderConverter/PicoLoaderConverter/ApList/ApList.cs

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+namespace PicoLoaderConverter.ApList;
+
+sealed class ApList
+{
+    public IReadOnlyList<ApListEntry> Entries { get; }
+
+    public ApList(IEnumerable<ApListEntry> entries)
+    {
+        Entries = entries.ToArray();
+    }
+}

tools/PicoLoaderConverter/PicoLoaderConverter/ApList/ApListEntry.cs

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+namespace PicoLoaderConverter.ApList;
+
+sealed record ApListEntry(
+    uint GameCode,
+    byte GameVersion,
+    DSProtectVersion DSProtectVersion,
+    byte DSProtectFunctionMask,
+    ushort RegularOverlayId,
+    ushort SOverlayId,
+    uint RegularOffset,
+    uint SOffset)
+{
+    public const ushort OVERLAY_ID_STATIC_ARM9 = 0xFFFE;
+    public const ushort OVERLAY_ID_INVALID = 0xFFFF;
+}

tools/PicoLoaderConverter/PicoLoaderConverter/ApList/ApListFactory.cs

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+using CsvHelper.Configuration;
+using CsvHelper;
+using System.Globalization;
+
+namespace PicoLoaderConverter.ApList;
+
+sealed class ApListFactory
+{
+    private const int BINARY_AP_LIST_ENTRY_SIZE = 16;
+
+    public ApList FromBinary(byte[] data)
+    {
+        int entryCount = data.Length / BINARY_AP_LIST_ENTRY_SIZE;
+        var entries = new ApListEntry[entryCount];
+        using (var reader = new BinaryReader(new MemoryStream(data)))
+        {
+            for (int i = 0; i < entryCount; i++)
+            {
+                entries[i] = ReadBinaryApListEntry(reader);
+            }
+        }
+
+        return new ApList(entries);
+    }
+
+    public byte[] ToBinary(ApList apList)
+    {
+        var memoryStream = new MemoryStream();
+        using var writer = new BinaryWriter(memoryStream);
+        foreach (var entry in apList.Entries)
+        {
+            WriteBinaryApListEntry(writer, entry);
+        }
+        return memoryStream.ToArray();
+    }
+
+    public ApList FromCsv(string csv)
+    {
+        var config = new CsvConfiguration(CultureInfo.InvariantCulture)
+        {
+            Delimiter = ";"
+        };
+        using var reader = new StringReader(csv);
+        using var csvReader = new CsvReader(reader, config);
+        var csvEntries = csvReader
+            .GetRecords<CsvApListEntry>()
+            .Select(ConvertFromCvsApListEntry)
+            .OrderBy(entry => entry.GameCode)
+            .ThenBy(entry => entry.GameVersion)
+            .ToArray();
+        return new ApList(csvEntries);
+    }
+
+    public string ToCsv(ApList apList)
+    {
+        var config = new CsvConfiguration(CultureInfo.InvariantCulture)
+        {
+            Delimiter = ";"
+        };
+        using var writer = new StringWriter();
+        using var csvWriter = new CsvWriter(writer, config);
+        csvWriter.WriteRecords(
+            apList.Entries
+                .Select(ConvertToCvsApListEntry)
+                .OrderBy(entry => entry.GameCode)
+                .ThenBy(entry => entry.GameVersion));
+        return writer.ToString();
+    }
+
+    private ApListEntry ReadBinaryApListEntry(BinaryReader reader)
+    {
+        uint gameCode = reader.ReadUInt32();
+        ushort info = reader.ReadUInt16();
+        byte gameVersion = (byte)(info & 0x1F);
+        var dsProtectVersion = (DSProtectVersion)((info >> 5) & 0x1F);
+        byte dsProtectFunctionMask = (byte)(info >> 10);
+        ushort regularOverlayId = reader.ReadUInt16();
+        ushort sOverlayId = reader.ReadUInt16();
+        uint regularOffset = ReadUInt24(reader);
+        uint sOffset = ReadUInt24(reader);
+        return new ApListEntry(
+            gameCode,
+            gameVersion,
+            dsProtectVersion,
+            dsProtectFunctionMask,
+            regularOverlayId,
+            sOverlayId,
+            regularOffset,
+            sOffset);
+    }
+
+    private uint ReadUInt24(BinaryReader reader)
+    {
+        var bytes = reader.ReadBytes(3);
+        return (uint)(bytes[0] | (bytes[1] << 8) | (bytes[2] << 16));
+    }
+
+    public void WriteBinaryApListEntry(BinaryWriter writer, ApListEntry entry)
+    {
+        writer.Write(entry.GameCode);
+        writer.Write((ushort)(entry.GameVersion | ((byte)entry.DSProtectVersion << 5) | (entry.DSProtectFunctionMask << 10)));
+        writer.Write(entry.RegularOverlayId);
+        writer.Write(entry.SOverlayId);
+        writer.Write((byte)(entry.RegularOffset & 0xFF));
+        writer.Write((byte)((entry.RegularOffset >> 8) & 0xFF));
+        writer.Write((byte)((entry.RegularOffset >> 16) & 0xFF));
+        writer.Write((byte)(entry.SOffset & 0xFF));
+        writer.Write((byte)((entry.SOffset >> 8) & 0xFF));
+        writer.Write((byte)((entry.SOffset >> 16) & 0xFF));
+    }
+
+    private ApListEntry ConvertFromCvsApListEntry(CsvApListEntry csvApListEntry)
+    {
+        return new ApListEntry(
+            GameCodeToUint(csvApListEntry.GameCode),
+            (byte)csvApListEntry.GameVersion,
+            ParseDSProtectVersion(csvApListEntry.DSProtectVersion),
+            (byte)csvApListEntry.DSProtectFunctionMask,
+            (ushort)csvApListEntry.RegularOverlayId,
+            (ushort)csvApListEntry.SOverlayId,
+            (uint)csvApListEntry.RegularOffset,
+            (uint)csvApListEntry.SOffset);
+    }
+
+    private CsvApListEntry ConvertToCvsApListEntry(ApListEntry apListEntry)
+    {
+        return new CsvApListEntry
+        {
+            GameCode = $"{(char)(apListEntry.GameCode & 0xFF)}{(char)((apListEntry.GameCode >> 8) & 0xFF)}" +
+                $"{(char)((apListEntry.GameCode >> 16) & 0xFF)}{(char)(apListEntry.GameCode >> 24)}",
+            GameVersion = apListEntry.GameVersion,
+            DSProtectVersion = FormatDSProtectVersion(apListEntry.DSProtectVersion),
+            DSProtectFunctionMask = apListEntry.DSProtectFunctionMask,
+            RegularOverlayId = (short)apListEntry.RegularOverlayId,
+            SOverlayId = (short)apListEntry.SOverlayId,
+            RegularOffset = (int)apListEntry.RegularOffset,
+            SOffset = (int)apListEntry.SOffset
+        };
+    }
+
+    private uint GameCodeToUint(string gameCode)
+    {
+        if (gameCode.Length != 4)
+        {
+            throw new ArgumentException(
+                $"Game code '{gameCode}' is not valid. It must consist of exactly 4 characters.", nameof(gameCode));
+        }
+        return (uint)gameCode[0] | ((uint)gameCode[1] << 8) | ((uint)gameCode[2] << 16) | ((uint)gameCode[3] << 24);
+    }
+
+    private DSProtectVersion ParseDSProtectVersion(string dsProtectVersion)
+    {
+        return dsProtectVersion switch
+        {
+            "1.05" => DSProtectVersion.V1_05,
+            "1.06" => DSProtectVersion.V1_06,
+            "1.08" => DSProtectVersion.V1_08,
+            "1.10" => DSProtectVersion.V1_10,
+            "1.20" => DSProtectVersion.V1_20,
+            "1.22" => DSProtectVersion.V1_22,
+            "1.23" => DSProtectVersion.V1_23,
+            "1.23Z" => DSProtectVersion.V1_23Z,
+            "1.25" => DSProtectVersion.V1_25,
+            "1.26" => DSProtectVersion.V1_26,
+            "1.27" => DSProtectVersion.V1_27,
+            "1.28" => DSProtectVersion.V1_28,
+            "2.00" => DSProtectVersion.V2_00,
+            "2.01" => DSProtectVersion.V2_01,
+            "2.03" => DSProtectVersion.V2_03,
+            "2.05" => DSProtectVersion.V2_05,
+            "2.00s" => DSProtectVersion.V2_00s,
+            "2.01s" => DSProtectVersion.V2_01s,
+            "2.03s" => DSProtectVersion.V2_03s,
+            "2.05s" => DSProtectVersion.V2_05s,
+            _ => throw new ArgumentException(
+                $"DS Protect Version '{dsProtectVersion}' could not be parsed.", nameof(dsProtectVersion))
+        };
+    }
+
+    private string FormatDSProtectVersion(DSProtectVersion dsProtectVersion)
+    {
+        return dsProtectVersion switch
+        {
+            DSProtectVersion.V1_05 => "1.05",
+            DSProtectVersion.V1_06 => "1.06",
+            DSProtectVersion.V1_08 => "1.08",
+            DSProtectVersion.V1_10 => "1.10",
+            DSProtectVersion.V1_20 => "1.20",
+            DSProtectVersion.V1_22 => "1.22",
+            DSProtectVersion.V1_23 => "1.23",
+            DSProtectVersion.V1_23Z => "1.23Z",
+            DSProtectVersion.V1_25 => "1.25",
+            DSProtectVersion.V1_26 => "1.26",
+            DSProtectVersion.V1_27 => "1.27",
+            DSProtectVersion.V1_28 => "1.28",
+            DSProtectVersion.V2_00 => "2.00",
+            DSProtectVersion.V2_01 => "2.01",
+            DSProtectVersion.V2_03 => "2.03",
+            DSProtectVersion.V2_05 => "2.05",
+            DSProtectVersion.V2_00s => "2.00s",
+            DSProtectVersion.V2_01s => "2.01s",
+            DSProtectVersion.V2_03s => "2.03s",
+            DSProtectVersion.V2_05s => "2.05s",
+            _ => throw new ArgumentException("Invalid DS Protect Version.", nameof(dsProtectVersion))
+        };
+    }
+}

tools/PicoLoaderConverter/PicoLoaderConverter/ApList/CsvApListEntry.cs

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+using CsvHelper.Configuration.Attributes;
+using PicoLoaderConverter.Csv;
+
+namespace PicoLoaderConverter.ApList;
+
+sealed class CsvApListEntry
+{
+    [Name("gameCode")]
+    public string GameCode { get; set; } = string.Empty;
+
+    [Name("gameVersion")]
+    public int GameVersion { get; set; }
+
+    [Name("dsprotVersion")]
+    public string DSProtectVersion { get; set; } = string.Empty;
+
+    [Name("dsprotFuncMask")]
+    [TypeConverter(typeof(BinaryNumberConverter))]
+    public int DSProtectFunctionMask { get; set; }
+
+    [Name("regularOvlId")]
+    public int RegularOverlayId { get; set; }
+
+    [Name("regularOffset")]
+    [TypeConverter(typeof(HexNumberConverter))]
+    public int RegularOffset { get; set; }
+
+    [Name("sOvlId")]
+    public int SOverlayId { get; set; }
+
+    [Name("sOffset")]
+    [TypeConverter(typeof(HexNumberConverter))]
+    public int SOffset { get; set; }
+}

tools/PicoLoaderConverter/PicoLoaderConverter/ApList/DSProtectVersion.cs

@@ -0,0 +1,25 @@
+namespace PicoLoaderConverter.ApList;
+
+enum DSProtectVersion
+{
+    V1_06,
+    V1_05,
+    V1_08,
+    V1_10,
+    V1_20,
+    V1_22,
+    V1_23,
+    V1_23Z,
+    V1_25,
+    V1_26,
+    V1_27,
+    V1_28,
+    V2_00,
+    V2_01,
+    V2_03,
+    V2_05,
+    V2_00s,
+    V2_01s,
+    V2_03s,
+    V2_05s
+}

tools/PicoLoaderConverter/PicoLoaderConverter/Csv/BinaryNumberConverter.cs

@@ -0,0 +1,22 @@
+using CsvHelper;
+using CsvHelper.Configuration;
+using CsvHelper.TypeConversion;
+
+namespace PicoLoaderConverter.Csv;
+
+sealed class BinaryNumberConverter : DefaultTypeConverter
+{
+    public override object? ConvertFromString(string? text, IReaderRow row, MemberMapData memberMapData)
+    {
+        if (text?.StartsWith("0b") is true)
+        {
+            text = text[2..];
+        }
+        return Convert.ToInt32(text, 2);
+    }
+
+    public override string? ConvertToString(object? value, IWriterRow row, MemberMapData memberMapData)
+    {
+        return Convert.ToString(Convert.ToInt32(value), 2);
+    }
+}

tools/PicoLoaderConverter/PicoLoaderConverter/Csv/HexNumberConverter.cs

@@ -0,0 +1,22 @@
+using CsvHelper;
+using CsvHelper.Configuration;
+using CsvHelper.TypeConversion;
+
+namespace PicoLoaderConverter.Csv;
+
+sealed class HexNumberConverter : DefaultTypeConverter
+{
+    public override object? ConvertFromString(string? text, IReaderRow row, MemberMapData memberMapData)
+    {
+        if (text?.StartsWith("0x") is true)
+        {
+            text = text[2..];
+        }
+        return Convert.ToInt32(text, 16);
+    }
+
+    public override string? ConvertToString(object? value, IWriterRow row, MemberMapData memberMapData)
+    {
+        return "0x" + Convert.ToString(Convert.ToInt32(value), 16);
+    }
+}

tools/PicoLoaderConverter/PicoLoaderConverter/PicoLoaderConverter.csproj

@@ -0,0 +1,15 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net9.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="CommandLineParser" Version="2.9.1" />
+    <PackageReference Include="CsvHelper" Version="33.1.0" />
+  </ItemGroup>
+
+</Project>

tools/PicoLoaderConverter/PicoLoaderConverter/Program.cs

@@ -0,0 +1,24 @@
+using CommandLine;
+using PicoLoaderConverter.Verbs;
+
+namespace PicoLoaderConverter;
+
+static class Program
+{
+    /// <summary>
+    /// List of verbs supported by the Pico Loader Converter.
+    /// To make a new verb, create a class implementing <see cref="IConverterVerb"/> and
+    /// add it to this list.
+    /// </summary>
+    private static readonly Type[] sVerbs = [
+        typeof(ApListConverterVerb),
+        typeof(SaveListConverterVerb)
+    ];
+
+    static void Main(string[] args)
+    {
+        Parser.Default
+            .ParseArguments(args, sVerbs)
+            .WithParsed<IConverterVerb>(o => o.Run());
+    }
+}

tools/PicoLoaderConverter/PicoLoaderConverter/SaveList/CardSaveType.cs

@@ -0,0 +1,9 @@
+namespace PicoLoaderConverter.SaveList;
+
+enum CardSaveType
+{
+    None = 0,
+    Eeprom = 1,
+    Flash = 2,
+    Nand = 3
+}

tools/PicoLoaderConverter/PicoLoaderConverter/SaveList/CsvSaveListEntry.cs

@@ -0,0 +1,17 @@
+using CsvHelper.Configuration.Attributes;
+using PicoLoaderConverter.Csv;
+
+namespace PicoLoaderConverter.SaveList;
+
+sealed class CsvSaveListEntry
+{
+    [Name("gameCode")]
+    public string GameCode { get; set; } = string.Empty;
+
+    [Name("saveType")]
+    public string SaveType { get; set; } = string.Empty;
+
+    [Name("saveSize")]
+    [TypeConverter(typeof(HexNumberConverter))]
+    public int SaveSize { get; set; }
+}

tools/PicoLoaderConverter/PicoLoaderConverter/SaveList/SaveList.cs

@@ -0,0 +1,11 @@
+namespace PicoLoaderConverter.SaveList;
+
+sealed class SaveList
+{
+    public IReadOnlyList<SaveListEntry> Entries { get; }
+
+    public SaveList(IEnumerable<SaveListEntry> entries)
+    {
+        Entries = entries.ToArray();
+    }
+}

tools/PicoLoaderConverter/PicoLoaderConverter/SaveList/SaveListEntry.cs

@@ -0,0 +1,6 @@
+namespace PicoLoaderConverter.SaveList;
+
+sealed record SaveListEntry(
+    uint GameCode,
+    CardSaveType SaveType,
+    byte SaveSize);

tools/PicoLoaderConverter/PicoLoaderConverter/SaveList/SaveListFactory.cs

@@ -0,0 +1,150 @@
+using CsvHelper.Configuration;
+using CsvHelper;
+using System.Globalization;
+using System.Numerics;
+
+namespace PicoLoaderConverter.SaveList;
+
+sealed class SaveListFactory
+{
+    private const int BINARY_SAVE_LIST_ENTRY_SIZE = 8;
+
+    public SaveList FromBinary(byte[] data)
+    {
+        int entryCount = data.Length / BINARY_SAVE_LIST_ENTRY_SIZE;
+        var entries = new SaveListEntry[entryCount];
+        using (var reader = new BinaryReader(new MemoryStream(data)))
+        {
+            for (int i = 0; i < entryCount; i++)
+            {
+                entries[i] = ReadBinarySaveListEntry(reader);
+            }
+        }
+
+        return new SaveList(entries);
+    }
+
+    public byte[] ToBinary(SaveList saveList)
+    {
+        var memoryStream = new MemoryStream();
+        using var writer = new BinaryWriter(memoryStream);
+        foreach (var entry in saveList.Entries)
+        {
+            WriteBinarySaveListEntry(writer, entry);
+        }
+        return memoryStream.ToArray();
+    }
+
+    public SaveList FromCsv(string csv)
+    {
+        var config = new CsvConfiguration(CultureInfo.InvariantCulture)
+        {
+            Delimiter = ";"
+        };
+        using var reader = new StringReader(csv);
+        using var csvReader = new CsvReader(reader, config);
+        var csvEntries = csvReader
+            .GetRecords<CsvSaveListEntry>()
+            .Select(ConvertFromCvsSaveListEntry)
+            .OrderBy(entry => entry.GameCode)
+            .ToArray();
+        return new SaveList(csvEntries);
+    }
+
+    public string ToCsv(SaveList saveList)
+    {
+        var config = new CsvConfiguration(CultureInfo.InvariantCulture)
+        {
+            Delimiter = ";"
+        };
+        using var writer = new StringWriter();
+        using var csvWriter = new CsvWriter(writer, config);
+        csvWriter.WriteRecords(
+            saveList.Entries
+                .Select(ConvertToCvsSaveListEntry)
+                .OrderBy(entry => entry.GameCode));
+        return writer.ToString();
+    }
+
+    private SaveListEntry ReadBinarySaveListEntry(BinaryReader reader)
+    {
+        uint gameCode = reader.ReadUInt32();
+        var saveType = (CardSaveType)reader.ReadByte();
+        byte saveSize = reader.ReadByte();
+        reader.ReadUInt16();
+        return new SaveListEntry(
+            gameCode,
+            saveType,
+            saveSize);
+    }
+
+    public void WriteBinarySaveListEntry(BinaryWriter writer, SaveListEntry entry)
+    {
+        writer.Write(entry.GameCode);
+        writer.Write((byte)entry.SaveType);
+        writer.Write(entry.SaveSize);
+        writer.Write((ushort)0);
+    }
+
+    private SaveListEntry ConvertFromCvsSaveListEntry(CsvSaveListEntry csvSaveListEntry)
+    {
+        if (csvSaveListEntry.SaveSize < 0 ||
+            (csvSaveListEntry.SaveSize > 0 && !BitOperations.IsPow2(csvSaveListEntry.SaveSize)))
+        {
+            throw new ArgumentException(
+                $"Save size 0x{csvSaveListEntry.SaveSize:X} is not supported. It must be a power of two.",
+                nameof(csvSaveListEntry));
+        }
+        
+        return new SaveListEntry(
+            GameCodeToUint(csvSaveListEntry.GameCode),
+            ParseSaveType(csvSaveListEntry.SaveType),
+            (byte)(csvSaveListEntry.SaveSize == 0 ? 0 : BitOperations.Log2((uint)csvSaveListEntry.SaveSize)));
+    }
+
+    private CsvSaveListEntry ConvertToCvsSaveListEntry(SaveListEntry saveListEntry)
+    {
+        return new CsvSaveListEntry
+        {
+            GameCode = $"{(char)(saveListEntry.GameCode & 0xFF)}{(char)(saveListEntry.GameCode >> 8 & 0xFF)}" +
+                $"{(char)(saveListEntry.GameCode >> 16 & 0xFF)}{(char)(saveListEntry.GameCode >> 24)}",
+            SaveType = FormatSaveType(saveListEntry.SaveType),
+            SaveSize = saveListEntry.SaveSize == 0 ? 0 : (1 << saveListEntry.SaveSize)
+        };
+    }
+
+    private uint GameCodeToUint(string gameCode)
+    {
+        if (gameCode.Length != 4)
+        {
+            throw new ArgumentException(
+                $"Game code '{gameCode}' is not valid. It must consist of exactly 4 characters.", nameof(gameCode));
+        }
+        return gameCode[0] | (uint)gameCode[1] << 8 | (uint)gameCode[2] << 16 | (uint)gameCode[3] << 24;
+    }
+
+    private CardSaveType ParseSaveType(string saveType)
+    {
+        return saveType.ToLowerInvariant() switch
+        {
+            "none" => CardSaveType.None,
+            "eeprom" => CardSaveType.Eeprom,
+            "flash" => CardSaveType.Flash,
+            "nand" => CardSaveType.Nand,
+            _ => throw new ArgumentException(
+                $"Save type '{saveType}' could not be parsed.", nameof(saveType))
+        };
+    }
+
+    private string FormatSaveType(CardSaveType saveType)
+    {
+        return saveType switch
+        {
+            CardSaveType.None => "none",
+            CardSaveType.Eeprom => "eeprom",
+            CardSaveType.Flash => "flash",
+            CardSaveType.Nand => "nand",
+            _ => throw new ArgumentException("Invalid card save type.", nameof(saveType))
+        };
+    }
+}

tools/PicoLoaderConverter/PicoLoaderConverter/Verbs/ApListConverterVerb.cs

@@ -0,0 +1,23 @@
+using CommandLine;
+using PicoLoaderConverter.ApList;
+
+namespace PicoLoaderConverter.Verbs;
+
+[Verb("aplist", HelpText = "Convert ap list from csv to bin.")]
+sealed class ApListConverterVerb : IConverterVerb
+{
+    [Option('i', Required = true, HelpText = "Input .csv file.")]
+    public required string InputFile { get; init; }
+
+    [Option('o', Required = true, HelpText = "Output .bin file.")]
+    public required string OutputFile { get; init; }
+
+    public void Run()
+    {
+        // Convert ap list from csv to bin
+        var factory = new ApListFactory();
+        var apList = factory.FromCsv(File.ReadAllText(InputFile));
+        var binaryList = factory.ToBinary(apList);
+        File.WriteAllBytes(OutputFile, binaryList);
+    }
+}

tools/PicoLoaderConverter/PicoLoaderConverter/Verbs/IConverterVerb.cs

@@ -0,0 +1,12 @@
+namespace PicoLoaderConverter.Verbs;
+
+/// <summary>
+/// Interface representing a verb supported by the Splatoon DS Converter.
+/// </summary>
+interface IConverterVerb
+{
+    /// <summary>
+    /// Runs the verb action.
+    /// </summary>
+    void Run();
+}

tools/PicoLoaderConverter/PicoLoaderConverter/Verbs/SaveListConverterVerb.cs

@@ -0,0 +1,23 @@
+using CommandLine;
+using PicoLoaderConverter.SaveList;
+
+namespace PicoLoaderConverter.Verbs;
+
+[Verb("savelist", HelpText = "Convert save list from csv to bin.")]
+sealed class SaveListConverterVerb : IConverterVerb
+{
+    [Option('i', Required = true, HelpText = "Input .csv file.")]
+    public required string InputFile { get; init; }
+
+    [Option('o', Required = true, HelpText = "Output .bin file.")]
+    public required string OutputFile { get; init; }
+
+    public void Run()
+    {
+        // Convert save list from csv to bin
+        var factory = new SaveListFactory();
+        var apList = factory.FromCsv(File.ReadAllText(InputFile));
+        var binaryList = factory.ToBinary(apList);
+        File.WriteAllBytes(OutputFile, binaryList);
+    }
+}