That unit emulates 5.25" drives. Strange as it may sound, Apple made two slightly different 5.25" drives with DB-19 connectors on them.
-The UniDisk 5.25" Drive (A9M0104)
-The Apple 5.25" Drive (A9M0107)
Both look the same aside from the label on the bottom. The difference is the Unidisk 5.25" requires the -12v power line on the floppy port. This is why this drive won't work with the Apple IIe Card for the LC PDS.
Too bad the pin 4 thing didn't work. I guess there is other logic at play with that daisy chain board. Thing is, most solid state disk needs on the Apple II can be handled by the CFFA3000. The number of programs that require a 3.5" drive because they directly drive the IWM is very small (mostly demoscene stuff). The Apple IIe/c/gs is blessed with a device independent block storage interface in ROM called "SmartPort", which makes emulating storage devices a cinch. Most major emulators take advantage of this feature too.
-The UniDisk 5.25" Drive (A9M0104)
-The Apple 5.25" Drive (A9M0107)
Both look the same aside from the label on the bottom. The difference is the Unidisk 5.25" requires the -12v power line on the floppy port. This is why this drive won't work with the Apple IIe Card for the LC PDS.
Too bad the pin 4 thing didn't work. I guess there is other logic at play with that daisy chain board. Thing is, most solid state disk needs on the Apple II can be handled by the CFFA3000. The number of programs that require a 3.5" drive because they directly drive the IWM is very small (mostly demoscene stuff). The Apple IIe/c/gs is blessed with a device independent block storage interface in ROM called "SmartPort", which makes emulating storage devices a cinch. Most major emulators take advantage of this feature too.