In this video I show how to use One ROM - the most flexible and powerful replacement ROM - in Amiga A500 and A600s. One ROM has also been tested and works in the A1200, A2000 and A3000, but sadly I don’t have any of those systems to showcase.

As well as being a great how-to and getting started for One ROM on the Amiga, this video announces that all of the new upright USB-C versions One ROM 24, 28, 32 and 40 are now available for sale at my online store. It also demonstrates the new “Large” version of One ROM available in 32 and 40 pin versions with 4MB of flash (up from 2MB on the standard version), allowing more ROM images to be stored. Again, these available for purchase today at https://shop.piers.rocks.

Links

Getting Started with One ROM: https://www.youtube.com/playlist?list=PLXs34HaWLi11VhlJEYf_Ff59cxOqqnIkP
One ROM: https://onerom.org/
One ROM Web: https://onerom.org/web
Buy One ROMs from me: https://shop.piers.rocks
Buy One ROMs from others: https://onerom.org/buy
Github: https://github.com/piersfinlayson/one-rom

Timestamps

00:00 Introduction
02:18 Amiga A500
06:29 Rev 5 oops PCB
07:37 Kickstart 3.1
09:13 Multiple Kickstarts
11:57 Runtime Kickstart selection
16:31 More Amiga ROM craziness
20:50 Up to 7 Kickstart ROMs
22:00 Amiga A600
27:51 A600 One ROM fit
31:14 Did I break the A600?
33:50 Wrap-up

Video content copyright (c) 2026 piers.rocks Limited. All rights reserved.

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