I had a Phase 5 Blizzard 060 and SCSI II controller in my A1200, I wonder if controller was 32bit with DMA? I don't remember the specs. The SCSI board also supported 72 pin SIMMs like the 060 accelerator.
The ram was 32bit & supported dma. You wouldn't need to have a simm on the blizzard scsi board, it's just for extra ram expansion. But you would at least need some ram on the accelerator.