Happy 4th, and more apple 2 questions

[Tony Duell]

> SVA (Sorrento Valley Associates) made an accessory disk controller for
> Apple ]['s.  I don't remember whether it supported MFM, or just FM, but it
> did support 8"

Many years ago I rememebr seeing a (commercial) add-on board for the 
Apple ][ that contained a WD1771 and was linked to a pair of 8" drives 
(standard Shugart interface from what I could tell). Of course that was 
FM< (single density) only

I can;t rememerb who made it, my guess is there were several companines 
making such boards.

-tony