Mistakes Were Made - One ROM Fire 🔥 USB

In this video I get my new One ROM Fire USB model working.

One ROM is the most flexible replacement ROM for your retro systems.

In a previous video I showed the challenge of laying out this extremely space constrained two layer PCB. This time, I work through all of the issues in getting it running and serving as a replacement VIC-20 ROM.

🔗 Links

Laying out the One ROM Fire USB: https://youtu.be/xIey26uy0MU
One ROM Fire USB Assembly Fail: https://youtu.be/-raKLlhwHJc?si

Recent Hackaday Podcast covering One ROM: https://piers.rocks/2025/10/09/floss-weekly.html

One ROM website: https://onerom.org/
One ROM Web Programmer: https://onerom.org/web/
One ROM Studio installer: https://onerom.org/studio/

🛒 Buy One ROMs

Keep an eye on my online store if you want to buy One ROMs when they are available:

https://www.packom.net/product/one-rom/

Don’t feel you need to buy my version of One ROM - I have no problem with you getting them fabbed yourself, or even selling them for profit. I will even advertise your version of One ROM on my youtube channel and at onerom.org if you share a link with me.

⏰ Timestamps

00:00 🎬 Introduction
01:01 ⚡ First power on
09:00 ❌ Fail 1
14:25 🔧 Firmware changes
20:10 ❌ Fail 2
22:30 💾 More firmware changes
25:00 ❌ Fail 3
29:00 ❌ Fail 4
31:30 ❌ Fail 5
31:59 ✅ It verks!
38:35 🤔 Assembly fail - or was it?
39:16 💭 Final thoughts