You will need the following software from DoobreyNet to split ROMs into component parts, and to combine files to make the new ROM image.
For example you could remove the original vice from the ROM image if you don't use the Amiga's original on-board IDE interface, and instead add a different device driver needed for the HD hardware you actually use, such as vice.
Therefore allowing the Amiga to boot into AmigaOS 3.9 without first needed to patch the system and perform a soft reboot.Īnd while creating this custom ROM image you can take the opportunity to customised the files it contains for your own needs. And a new ROM is then built which contains both. The custom 3.9 ROM is built by combining the files from the original Kickstart 3.1 ROM version, with the files from the AmigaOS 3.9 ROM update. By combining the files from the original Kickstart 3.1 ROM with those included in the AmigaOS 3.9's ROM Updates and making a new updated ROM it removes the Amiga's need to first need to run the setpatch to add the newer files into the system. This is where this custom Kickstart 3.9 ROM comes in. Logically, had Commodore still existed they probably would have released an updated kickstart ROM that contained the updates this Patch adds, instead of needed to patch the system in memory every time it boots. Kickstart 3.9 is instead is a custom "scene/homebrew" ROM created by the Amiga community for use with AmigaOS3.9.Īlthough AmigaOS 3.9 boots fine using a Kickstart 3.1 ROM, before AmigaOS 3.9 actually loads it normally first needs to patch the system by running setpatch to add the additional AmigaOS ROM Updates required for 3.9, and then once they are loaded/patched the system reboots and then loads AmigaOS 3.9. There wasn't an official Kickstart 3.9 ROM released by Commodore, or any other Amiga company.