The OMTI 5527 card is an 8 bit RLL HD controller. The host Amiga card that it plugs in to may have been made by PreSpect Technics in Montreal Canada. I think I still have one of these in a box somewhere 
Wow! Its been awhile since I heard of that standard.
RLL?
I found an 8 bit ISA WD based MFM controller card in my stack of spare parts recently.
Once IDE was established, these two standards pretty much disappeared.
