Both the A1000 Kickstart disk and the A3000 SuperKickstart ROM (AKA Kickstart 1.4) were specifically made because 1.2 wasn't ready when the A1000 shipped and 2.0 wasn't ready when the A3000 shipped.
The SuperKickstart ROM only works in a A3000 with an MC68030. It won't work with MC68040/060 due to MMU issues and won't work in the A4000/030 due to lack of a real "scsi.device".
