Amlyn Minipac diskette changer

[Steven Hirsch]

Has anyone else on the list seen one of these?  I picked up a Vista V1200 
disk system for Apple 2 that uses this type of drive.  The mechanism takes 
a plastic cartridge with five 5.25" floppy disks.  The diskettes appear to 
be conventional SS format with a couple of extra punchouts to mate with 
the loader mechanism.  Electrical interface is compatible with 8" floppy 
drives (interface card was also sold for that purpose).

I'm not able to turn up any information about the drive and am wondering 
how the diskette select/load scheme is intended to work.  There are 
at least a couple of possibilities:

- Treat the physical diskettes as portions of a single logical floppy and 
select diskette by track range (first diskette 0-39, second 40-79, etc.)

- Treat each physical diskette as a logical drive and use binary select 
lines on interface to choose.

Anyone have documentation on the drive mechanism or the Vista product?


Steve


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