So does the interface convert from DISKCHG to RDY as well then?
I don't know. I only read about them, never had one.
http://ftp://ftp.cs.tu-berlin.de/pub/aminet/docs/rview/PowerMDisk.txt "If you want faster access, there have been other attempts to
work round the problem with mixed success. The Power XL Drive uses a
buffer to handle the data sent to the Amiga. This, as the DiskSpeed
results below show, works reasonably well. The other solution is the
untested Catweasel board, which basically acts as a replacement floppy
controller."
I had one of the variable speed dell laptop drives that came out after commodore went under.