ROM 3.X Amiga 4000 (two chips)

New Kickstart ROM 3.X 45.064 from Cloanto for the Amiga 4000. Installation manual included. The 3.X ROM remains true to the original 3.1, adding some essential updates, the most notable of which being the ability to boot from "large" hard disks.

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The current 3.X ROM (45.064) builds on the original 40.068 ROM components, and aims to remain as true to the original as possible, while merging some essential updates, the most notable of which being the ability to boot from "large" hard disks. The 3.X version for the A4000T is available here.

The 3.X ROM for the Amiga 4000 featuring the following improvements:

• Patches originally released under the ESCOM and Gateway Amiga ownership (no SetPatch or reboot required)
• scsi.device and exec.library updates by Alexander Benedictov, Chris Hodges, Heinz Wrobel and Toni Wilen
• expansion.library fixes by Jeff Weeks
• FastFileSystem fixes by Etienne Vogt
• mathieeesingbas.library fixes by Harry "Piru" Sintonen
• Support for Disks Larger than 4 GB

The scsi.device updates included in the 3.X ROM make it possible to boot from disks larger than 4 GB. Additional elements, such as FastFileSystem 45.9 and Installer 44.10, are included in our 'Workbench 3.1 Disk Set Cloanto Edition' and 'Workbench 3.1 CF Edition by Cloanto' distributions, and complement the ROM-based enhancements.

The 3.X ROMs have a size of 512 KB, and are therefore compatible with all Amiga models except for the Amiga 1000. In order to make room for the enhancements, the 3.X ROMs employ the same technique used by Commodore for the 4000T ROMs, i.e. ROM space was freed by moving workbench.library out of the ROM. This means that a "Libs/workbench.library" file must be present on the boot disk, as detailed below.

System Requirements:

The Kickstart ROM 3.x is fully compatible with our 'Workbench 3.1 disk set by Cloanto' and our 'Workbench 3.1 Compact Flash by Cloanto', available at our web.

For other custom configurations, and for maximum compatibility, the Amiga boot partition should be the first partition of a disk, and it should not be larger than 4 GB. In order to remain compatible with older software that uses 32-bit values to measure disk capacity, a maximum partition size of 2 GB is recommended.

Required "workbench.library". Because workbench.library is not part of 3.X ROMs, a "Libs/workbench.library" file, as included in the Classic Support 'Workbench 3.1 disk set by Cloanto' and the 'Workbench 3.1 Compact Flash by Cloanto', must be present on the boot disk. This requirement is in common with later 3.1 ROMs by Commodore and ESCOM, as used with the Amiga 4000T model.

For additional information on adding the "workbench.library" file, see Amiga Forever Workbench 3.1 Duplication Instructions.

"Startup-Sequence" Modification. Older versions of the SetPatch command may not have been designed for use in combination with newer ROMs, and thus may fail to work properly with 3.X ROMs. In these cases, a change is required in order to detect and avoid patching 3.X ROMs. Edit S/Startup-Sequence as follows:

C:SetPatch QUIET

replace it with

C:Version >NIL: exec.library 45 20
C:SetPatch QUIET

Such an updated "Startup-Sequence" file is already included in the Classic Support Workbench 3.1 set, where it does not need to be edited manually.

Online Support: Each 3.X ROM set comes with a license key that can be used to download the ROM or the "workbench.library" file for installation or recovery purposes. To register for support, please refer to


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