Furthermore, I'd like to know if there are any incompatibilities with
accelerators and mass storage systems such as the FocusDrive. I suspect that
since the Focus does not use IDE, there are none. But I'd like to confirm.
I think you mean DMA... Seriously, DMA on an 8 bit Apple II isn't
really much of a win, since ProDOS 8 forces all disk access to be "one
block at a time". The accelerator will more than compensate you, and
from experience I can tell you that a Focus on a Transwarped or Zipped
IIe is *wicked* fast.