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Geargrafx

作者 drhelius · drhelius/Geargrafx

PC Engine / TurboGrafx-16 emulator with an embedded MCP server for AI-assisted debugging and retro game analysis.

Geargrafx is a cross-platform TurboGrafx-16 / PC Engine / SuperGrafx / PCE CD-ROM² emulator written in C++ with an embedded MCP server. AI agents can control execution, inspect memory, set breakpoints, disassemble HuC6280 code, view sprites/tiles, and inspect CD-ROM subsystem state. Supports stdio and HTTP transport, Multi Tap (5 players), save states with previews, and VGM recording.

為什麼要用

核心特性

即時演示

實際使用效果

geargrafx-2.replay ▶ 就緒
0/0

安裝

選擇你的客戶端

~/Library/Application Support/Claude/claude_desktop_config.json  · Windows: %APPDATA%\Claude\claude_desktop_config.json
{
  "mcpServers": {
    "geargrafx-2": {
      "command": "TODO",
      "args": [
        "See README: https://github.com/drhelius/Geargrafx"
      ]
    }
  }
}

開啟 Claude Desktop → Settings → Developer → Edit Config。儲存後重啟應用。

~/.cursor/mcp.json · .cursor/mcp.json
{
  "mcpServers": {
    "geargrafx-2": {
      "command": "TODO",
      "args": [
        "See README: https://github.com/drhelius/Geargrafx"
      ]
    }
  }
}

Cursor 使用與 Claude Desktop 相同的 mcpServers 格式。專案級設定優先於全域。

VS Code → Cline → MCP Servers → Edit
{
  "mcpServers": {
    "geargrafx-2": {
      "command": "TODO",
      "args": [
        "See README: https://github.com/drhelius/Geargrafx"
      ]
    }
  }
}

點擊 Cline 側欄中的 MCP Servers 圖示,然後選 "Edit Configuration"。

~/.codeium/windsurf/mcp_config.json
{
  "mcpServers": {
    "geargrafx-2": {
      "command": "TODO",
      "args": [
        "See README: https://github.com/drhelius/Geargrafx"
      ]
    }
  }
}

格式與 Claude Desktop 相同。重啟 Windsurf 生效。

~/.continue/config.json
{
  "mcpServers": [
    {
      "name": "geargrafx-2",
      "command": "TODO",
      "args": [
        "See README: https://github.com/drhelius/Geargrafx"
      ]
    }
  ]
}

Continue 使用伺服器物件陣列,而非映射。

~/.config/zed/settings.json
{
  "context_servers": {
    "geargrafx-2": {
      "command": {
        "path": "TODO",
        "args": [
          "See README: https://github.com/drhelius/Geargrafx"
        ]
      }
    }
  }
}

加入 context_servers。Zed 儲存後熱重載。

claude mcp add geargrafx-2 -- TODO 'See README: https://github.com/drhelius/Geargrafx'

一行命令搞定。用 claude mcp list 驗證,claude mcp remove 移除。

使用場景

實戰用法: Geargrafx

How to debug a PC Engine ROM with AI assistance using Geargrafx

👤 PC Engine homebrew developers and retro game researchers ⏱ ~30 min intermediate

何時使用: You're developing or analyzing a PC Engine ROM and need to debug runtime behavior.

前置條件
  • Geargrafx built with MCP support — Build from source following the GitHub README
  • A PC Engine ROM file (.pce or .sgx) — Your own homebrew ROM or a ROM you legally own
步驟
  1. Connect and inspect
    Connect to the Geargrafx MCP server. Show me the current HuC6280 CPU state and disassembly at the program counter.✓ 已複製
    → CPU registers and disassembled instructions
  2. Analyze sprite system
    Inspect the VDC sprite table. How many sprites are active and what tiles do they reference?✓ 已複製
    → Sprite attribute table with positions, tile indices, and flags

結果: Understanding of ROM execution and VDC hardware state for debugging.

注意事項
  • CD-ROM games require proper CUE/BIN setup — Ensure your CUE file paths are correct and all BIN tracks are present
搭配使用: filesystem

Learn PC Engine hardware architecture interactively

👤 Students and enthusiasts learning retro console hardware ⏱ ~45 min advanced

何時使用: You want to understand the HuC6280 CPU, VDC graphics, and PSG audio systems.

前置條件
  • Geargrafx with MCP server — Build from source
步驟
  1. Explore the VDC
    Step through the VBlank interrupt and explain how the PC Engine's VDC handles background scrolling and sprite rendering.✓ 已複製
    → Annotated explanation of VDC register writes and their effects

結果: Hands-on understanding of PC Engine hardware internals.

注意事項
  • SuperGrafx has two VDCs which complicates analysis — Start with regular PC Engine games before tackling SuperGrafx titles

組合

與其他 MCP 搭配,撬動十倍槓桿

geargrafx-2 + filesystem

Export debug data and memory dumps for documentation

Dump the VDC sprite table and tile data to files for analysis.✓ 已複製

工具

此 MCP 暴露的能力

工具輸入參數何時呼叫成本
pause/resume/step none / step_count? Control emulator execution 0
read_memory address: int, size: int Read emulator memory at any address 0
set_breakpoint address: int Set a CPU breakpoint 0
disassemble address: int, count: int Disassemble HuC6280 instructions 0
get_hardware_status none Get VDC, VCE, and PSG register states 0

成本與限制

運行它的成本

API 配額
N/A — fully local
每次呼叫 Token 數
100–500 tokens per debug command
費用
Free and open source (MIT license)
提示
Use targeted reads instead of full memory dumps.

安全

權限、密鑰、影響範圍

憑證儲存: N/A
資料出站: Fully local — no network calls

故障排查

常見錯誤與修復

MCP server not responding

Ensure Geargrafx was built with MCP support. Check the default port is available.

驗證: Test the HTTP endpoint
CD-ROM game won't load

Verify CUE file references correct BIN paths. Try converting to CHD format.

驗證: Check CUE file contents match actual BIN filenames
SuperGrafx ROM crashes

Only a handful of SuperGrafx games exist. Verify the ROM is actually an SGX title, not a regular PCE ROM.

驗證: Check ROM header

替代方案

Geargrafx 對比其他方案

替代方案何時用它替代權衡
GearboyYou want to debug Game Boy ROMs instead of PC EngineDifferent console, same MCP-enabled emulator approach

更多

資源

📖 閱讀 GitHub 上的官方 README

🐙 查看未解決的 issue

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