All legacy hardware build for a1200 was based on 1d1.
Compatibility is somewhat guaranteed for that revision.
When HW is incompatible with older than 1d4 MB revisions, there are fixes usually found on aminet to cope with problems,
Those fixes usually do nothing when chipset update
(buster is the only chip that was actually updated through the a1200 production history)is needed for latest hardware to work in an A1200.
All you need to trace and find s where exactly the incompatibility lies on and apply the appropriate fix to get your HW to work with your 1d1.
