The 1572 is the 'big brother' of the 1571. A prototype was shown on the
Summer Consumer Electronics Show (CES) in 1985, but as many other Commodore
devices, it never made it to the market.
Basically, this drive was two 1571 in one case and was a perfect choice
for an easy backup using the BACKUP command like with the old CBM dual
drives . As opposed to the 1571, it had 8 kB RAM and 64kB ROM
Jim Brain's Commodore Trivia  give an answer why this drive
was so ill-fated:
Q $111) At one time, Commodore attempted to manufacture a dual
drive version of the 1571 called the 1572. For what
technical reason did it utimately fail?
A $111) One must remember that the 1571 DOS was a descendant
of the 1540 DOS, which was in turn a descendant of the
earlier dual drive IEEE drives. To make the 1572,
Commodore engineers tried to re-introduce the dual
drive code that had been removed when Commodore started
producing single disk drives. Unfortunately, the
re-introduction did not ultimately succeed.
If you own that drive or know someone who owns it or have any additional information about it, please mail me!
 AFAIR, I've read that it was addressed using 0: and 1:, I have
to dig up that magazine or book.
 64'er 8/85, p.9, Chicago im Zeichen der CES
 Commodore Trivia Edition #18, Q $111
Updated: January 16th, 1998
Created: January 1997
Status : NOT VERIFIED!
Site copyright © 1997 by Marc-Jano Knopp
This document is part of MJK's Commodore 64 & LCD Page
Brought back to life by Peter Schepers, Dec 10, 2005 because I really liked this site!