I'm in the process of restocking a lost collection of retro machines, including a couple of A500s, a 500+ and 2 A2000s (rev 4.1 and 6) in various states of disrepair. For one of the 2000s I would like to have the ability to transfer existing data and programs from a SCSI hard disk to an IDE unit but I really can't work out how I can have 2 mass storage controllers in a single machine, either on a 500 or a 2000.
For instance, I have an A500+ with a Wicher accelerator installed, along with an A590 hard drive. I can only access one mass storage controller at a time - if the Wicher is in, the A590 isn't available. In my head this is something like device ID conflicts and I would love to be able to archive off all this lovely stuff from both the A590 and the internal SCSI drive in one of the 2000s (Wicher experiments pending) - and I may get to a point where I want CD/DVD storage and more hard disks in the 2000 than the Wicher can provide. Does anyone have any pointers or hints, or even better any experience of doing the same without resorting to SCSI <-> IDE adaptors?
EDIT : The A590 is using an XT drive, NOT a SCSI drive!