The Fujitsu Eagle Engineering Manual, Chapter 7, Interface spec.,
always seemed rather usable to me anyway:
http://www.spies.com/aek/pdf/fujitsu/B03P-4655-0001A_2351_Dec84.pdf
here, rather:
http://www.bitsavers.org/pdf/fujitsu/B03P-4655-0001A_2351_Dec84.pdf
... in case you don't find more...
This area looks promising...
http://www.bitsavers.org/pdf/cdc/discs/
THX again to Al.
John A.