MFM emulator update - test-drb@ccmp.vtda.org

10 Feb 2014

----- Original Message ----- 
Message: 1
Date: Sun, 9 Feb 2014 10:43:57 -0500
From: David Gesswein <djg at pdp8online.com>

...
  I had seen some pictures like the one in this brochure
that showed it had
 a clear cover so you could see the mechanism and also have a big head
 actuator coil etc that made it look more interesting than later drives. 
bitsavers.trailing-edge.com/pdf/imi/brochures/IMI_77xx_Brochure.pdf

...
  Though the marketing material may have shown it better
than the actual
 drive. Unsure if its age but its not that transparent in this picture
http://resetvector.com/wp-content/gallery/DataStorage/Winchester30-30/DSCN1…

I think it might just be glare; all the ones I've seen had smoked plastic
covers that let you clearly see the inside of the HDA, and if you look 
closely you can make out the platter and the voice coil in that picture..

And yes, it has a fairly large linear voice coil head actuator; fun to watch
and you definitely knew when it was seeking.

I've still got one (7710) here complete with its hefty power supply and was
actually planning to test it this weekend, but no time, alas...

m