MODIFY SONY MPF920 DRIVE FOR ATARI USE

Update your old 720k to a 1.44 drive etc.
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MODIFY SONY MPF920 DRIVE FOR ATARI USE

Post by exxos » Mon Aug 21, 2017 2:16 pm

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The link is moved from SEL1 to SEL0 with a soldering iron. That's it! Your drive has now had its drive select ID altered to work with your ST!


After testing 4 drives out dated JUN2002 on my ST, these all failed to work. I tried one on my stock falcon and while it worked, it was unreliable. A later drive worked perfectly. So the SONY chips are questionable. It is difficult to say if the "E" version is to blame, or it was the year of manufacture to blame. I will try and keep a list of the drives I come across..

I am marking drives as BAD if they have a SONY chip. I never tested if the drives worked correctly as a PC drive or not as I have only been using them on a Atari ST/Falcon. In anycase, I would avoid drives with SONY chips, or drives dated before 2004.

APR 2000 - SONY CHIP - BAD (E/131)
FEB 2001 - SONY CHIP - BAD
JUN 2002 - SONY CHIP - BAD (E/131)
JAN 2003 - Unknown - possible good BH chip (E/131)
MAY 2004 - BH CHIP - GOOD (Z/131)
DEC 2005 - BH CHIP - GOOD (Z/121)
OCT 2006 - BH CHIP - GOOD (Z/121)
JUL 2007 - BH CHIP - GOOD (Z/121)
xxxx 2008 - Unknown - possible good BH chip
APR 2009 - BH CHIP - GOOD (Z/121)

I do not know about any other SONY MPF revisions, this only applies to the MPF920 series.

You will also need to modify your Atari case.
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