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From: miker@porkface2.WV.TEK.COM
Newsgroups: comp.sys.cbm
Subject: Help with Blue chip 128 (1571 clone)
Message-ID: <7298@orca.wv.tek.com>
Date: 1 Jun 90 00:15:17 GMT
Sender: nobody@orca.wv.tek.com
Reply-To: miker@porkface2.WV.TEK.COM ()
Distribution: usa
Organization: Tektronix, Inc., Wilsonville, OR
Lines: 20

I acquired a Blue Chip 128 disk drive with no manual.  The power-up
message says CBM dos V3.0 1571.  On a C128 it formats double sided and
shows 13XX blocks free.  When I stick the same drive and previously
formatted 128 diskette on
the C64, it reads the usual 664 blocks free.  It seems to accept files
normally.  This is all confusing.  If it's formatted 1328blocks, the
Directory should be bigger and I should show fewer than 664 blocks
free??  If the recording method is different, why does it even read in
the wrong mode?

Is there a way to get the full capacity on the C64?

The eratta sheet with the 1571 manual gives an incantation something
like open 1,8,15,"UO>M1" to lock the drive into 1571 mode.  On the blue
chip using the C64 it just locks up the drive.

Is the Blue Chip 128 different?  Ideas?  I don't own a real 1571 or 
C128 to experiment on.

Thanks, miker