Mechanical Music Digest  Archives
You Are Not Logged In Login/Get New Account
Please Log In. Accounts are free!
Logged In users are granted additional features including a more current version of the Archives and a simplified process for submitting articles.
Home Archives Calendar Gallery Store Links Info
MMD > Archives > November 2014 > 2014.11.25 > 07Prev  Next

PianoDisc PDS-128Plus Floppy Drive Replacement
By Vo Danh

[ Rob Goodale wrote in 141114 MMDigest:

> The floppy drive in the PDS-1000, PDS-32, PDS-128, and PDS-228 is
> somewhat proprietary.  That is, the system reads the encoded MIDI
> as a stream and not as a self-contained file.  This is known as
> MIDI "Type 0" format.

Hi Rob,  thanks for replying.  Yes, I am aware of the conversion to
Type 0 MIDI format.  I have an old Windows XP box laying around that
I can work with floppy without any problem.  I have no success yet,
though, but here is the information I gathered so far.

The floppy drive in the controller is a Sony MPF420-2 floppy drive
model.  I could not find any specification sheet on the drive, so
I am not sure if it is a 720K or a 1.44 Mb model.  However, I bought
a floppy emulator that can do either 720k or 1.44Mb.  Setting the
emulator to 720 Kb does not seem to work at all, so I set it to 1.44 Mb
mode.  I read somewhere on MMDigest that you have to set the "Ready"
flag/jumper to "on" for the drive, so I set the jumper for that with
the emulator.

Another jumper that I also set is the "Motor on" since the emulator
I bought has a couple different settings for different things.  Anyway,
with 1.44 Mb, "Ready", and "Motor on" settings I was able to get the
controller to acknowledge that there is a floppy drive and a blank
drive in it.  However, it then tries to format the diskette every
time I turn it on, but then fails to read the disk after formatting.
I have not had time to look further, but at $30 to $40 apiece I might
try getting some other emulator to see if any of them work before
giving up. :)


Vo Danh

(Message sent Tue 25 Nov 2014, 06:28:32 GMT, from time zone GMT-0800.)

Key Words in Subject:  Drive, Floppy, PDS-128Plus, PianoDisc, Replacement

Home    Archives    Calendar    Gallery    Store    Links    Info   

Enter text below to search the MMD Website with Google

CONTACT FORM: Click HERE to write to the editor, or to post a message about Mechanical Musical Instruments to the MMD

Unless otherwise noted, all opinions are those of the individual authors and may not represent those of the editors. Compilation copyright 1995-2019 by Jody Kravitz.

Please read our Republication Policy before copying information from or creating links to this web site.

Click HERE to contact the webmaster regarding problems with the website.

Please support publication of the MMD by donating online

Pay via PayPal

No PayPal account required

Translate This Page

. .