Re: IIgs / Duo Disk / Monitor 100 compatibility question

[dalloff@freenet.columbus.oh.us (Dave Althoff)]

David Empson (dempson@actrix.gen.nz) wrote:

: > Will the GS motherboard control the DuoDisk right from the motherboard or
: > must I install the card (seems like a waste of a port)? If it will, can I
: > cascade a 3.5 either before or after it?

: In theory, the IIgs will control a DuoDisk quite happily.  However,
: there is a minor hardware incompatibility between some DuoDisks and the
: IIgs motherboard.  I'm sure Nathan's FAQs will have information on this
: (I've never used a DuoDisk and rarely seen one, so I haven't made any
: notes on this).  You might also need an adaptor cable, since I believe
: the DuoDisk has a larger connector than the UniDisk (not for any useful
: reason).

While the connector on the back of the DuoDisk itself is a DB-25, the
DuoDisk cable terminates with a DB-19 at the controller end, so it just
plugs in to the drive port.  The DuoDisk controller and the 5.25 drive
controller are identical...in fact, except for connectors, they are
identical to the Disk ][ controller.

--Dave Althoff, ][.
-- 
    /^\        _       _              ***  It won't be long now!  ***
   /XXX\      /X\     /X\_      _     /X\__      _     _        _____  
  /XXXXX\    /XXX\  _/XXXX\_   /X\   /XXXXX\    /X\   /X\      /XXXXX
_/XXXXXXX\__/XXXXX\/XXXXXXXX\_/XXX\_/XXXXXXX\__/XXX\_/XXX\_/\_/XXXXXX