Date   : Mon, 25 Aug 1997 14:48:23 -0700
From   : Angus Duggan <angus@...>
Subject: BBC disk drives

Andrew de Quincey writes:
>What was the actual advantage of the 1770 anyway?

Double density. With an appropriate DFS, it could store ~700K per disc rather
than 400K. The chip was also cheaper (the 8271 was dropped sometime during
the beeb's life, it cost about 80 quid last time I looked).

a.