Replace 3 retro ROMs with a single software ROM - how?! 🤯

In this video I demonstrate the new features in v0.2.0 of the Software Defined Retro ROM - the most flexible ROM replacement for 8-bit computers - including the ability for a **single replacement ROM to emulate multiple original ROMs**. I demonstrate replacing both kernal ROMs in a fine, old 1541 disk drive, kernal and basic ROMs in a VIC-20, and the kernal, basic and character ROMs on a C64. **What's covered:** • How it works and how to configure it • Current limitations and future plans • New status LED functionality • Logging support • Dynamic pin mapping for custom PCB designs • Firmware inspection tool Got questions about the Software Defined Retro ROM or suggestions for future features? Drop them in the comments! 👇 🔗 **Links:** Github repo: https://piers.rocks/u/sdrr Previous video - introduction: https://youtu.be/Jhe4LF5LrZ8 Previous video - technical deep dive: https://youtu.be/pOZ2-W3dpZ8 ⏰ **Timestamps** 00:00 🎬 Introduction 00:10 💾 1541 disk drive 01:18 🖥️ VIC-20 02:05 💻 C64 03:04 🔧 Hardware solution 04:08 ⚙️ How it works 05:20 ⚠️ Current limitations 05:56 🚀 Planned future support 07:04 📋 Multi-ROM config 07:30 💡 Status LED 08:05 📝 Logging 10:26 🗺️ Dynamic pin mapping config 10:41 🔍 Firmware inspection 11:22 🎯 Wrap-up Video content copyright (c) 2025 piers.media Limited. All rights reserved.