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gbdk-expert

Provide GBDK expert guidance for Game Boy Color hardware and API development.

Updated Mar 9, 2026
Search Tags:#development#hardware#gbdk#game boy#cgb#ppu
One-click install
npx skills add https://github.com/MatthieuGagne/gmb-nuke-raider --skill gbdk-expert
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: gbdk-expert
Source: https://github.com/MatthieuGagne/gmb-nuke-raider/tree/main/.claude/skills/gbdk-expert
Command: npx skills add https://github.com/MatthieuGagne/gmb-nuke-raider --skill gbdk-expert

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

This Skill provides expert guidance and reference material for developing games on the Game Boy Color using the GBDK (Game Boy Development Kit), helping you navigate complex hardware details and common pitfalls.

Core Features & Use Cases

  • Hardware Reference: Access detailed information on Game Boy memory maps, registers, and PPU modes.
  • API Guidance: Provides correct GBDK API function names and usage patterns.
  • Gotcha Identification: Highlights common errors and hardware quirks to avoid.
  • Use Case: When encountering a GBDK compilation error related to VRAM access or sprite rendering, consult this Skill for the correct PPU timing and register configurations.

Quick Start

Use the gbdk-expert skill to understand how to safely write to VRAM when the display is on.

Frequently Asked Questions about gbdk-expert

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I safely write to VRAM on the Game Boy Color when the display is on?▼

CGB palettes are configured by writing to specific hardware registers using GBDK API functions. Correct palette setup is essential for proper color rendering and avoiding graphical glitches.

Why does my GBDK game crash during sprite rendering or VRAM access?▼

GBDK games crash during VRAM access or sprite rendering due to incorrect PPU timing. You must ensure VRAM writes only occur during safe PPU modes to prevent hardware conflicts.

How do I configure CGB palettes and hardware registers using GBDK?▼

CGB palettes are configured by writing to specific hardware registers using GBDK API functions. Correct palette setup is essential for proper color rendering and avoiding graphical glitches.

What are the common pitfalls when developing Game Boy games with GBDK?▼

Common GBDK pitfalls include violating hardware constraints, improper interrupt handling, and unsafe VRAM access. Identifying these hardware quirks early prevents unpredictable game behavior.

Does Game Boy Color development with GBDK require specific hardware knowledge?▼

Game Boy Color development requires strict adherence to hardware constraints, including precise memory maps and register configurations. Respecting these limits ensures reliable game execution.

How do I use GBDK API functions for Game Boy interrupt handling?▼

GBDK provides specific API functions and usage patterns for manipulating sprites and handling interrupts on the Game Boy. Using the correct API names ensures your code interacts safely with the hardware.

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