Subj : 2.88 MB Floppy Operations?
To   : Rich Wonneberger
From : Vitus Jensen
Date : Sun Mar 18 2001 05:53 am

Moin Rich!

17.03.2001, Rich Wonneberger wrote a message to Vitus Jensen:

>> PS: I *do* have used 2.88 floppy drives in the past and there is just
>> now such a drive in front of me.  Unfortunately it's from a PS/2 and
>> does not have a power connector.  Made by Mitsubishi, manufactured for
>> IBM Corporation in 1993.

RW> I have seen many of the 2.88 floppy drives at work in disposal.  All
RW> the ones  I looked at did not have the power plug as you stated, and
RW> I azzumed that was  the way they all come.

RW> Do you (or anyone) know if there is an adapter for these drives to use
RW> them in  normal systems??

RW> If I could get a pin out of the single connector, maybe one could be
RW> fabricated with a break out type box??


The was a post on usenet which Willy Steger forwarded to me.  But I always were
to lazy to try this out and besides: I only have a single drive and no 2.88MB
medium so there is no point in spending much work on it.


=================================== NETMAIL
====================================
  Fran: Willy Steger                      2:2474/400.6    30 Oct 2000
23:54:24
  Till: Vitus Jensen                      2:2474/424.1    31 Oct 2000
21:26:14
  Aemne: 2.88 Floppy von IBM

================================================================================
Hallo Vitus!

Antwort auf eine Message von Vitus Jensen an Willy Steger:

VJ>>> Kennt jemand die Dinger und hat sie schon einmal an einen normalen
VJ>>> Disketten Controller angeschlossen?  Am 34poligen Steckverbinder ist Pin
VJ>>> 3 mit *5V* bezeichnet, ist der Rest wie ueblich?  Und was liegt
VJ>>> normalerweise auf Pin 3 (Masse?)? Na, alle Ideen wie ich das Ding in den
VJ>>> Rechner bekomme, werden gerne entgegengenommen.  Und fuer die IBMer
unter
VJ>>> uns:

VJ>>>         IBM FRU 64F4148
VJ>>>         IBM ASM 64F5996
VJ>>>         Mitsubishi MF356F-899MB


VJ> Ich werde den Dejanews Artikel mal suchen (wenn ich den finden kann, Deja
VJ> killt anscheinend ihre Datenbank: man findet immer weniger).  Und sonst,
VJ> klar, ich halte Dich auf dem laufenden.

aus reiner Lageweile :-) hab ich auch nochmal ein paar Minuten gesucht und
zumindest das Pinout gefunden:


-------------------------cut-----------------------
Message 1 of 1 in this thread                            [Image]help[Image]
  + [Image]Return[Image] to current thread

Re: PS/2 2.88 floppy question
Author:   Peter H. Wendt <[email protected]>
Date:     2000/05/17
Forum:    comp.sys.ibm.ps2.hardware
 ------------------------------------------------------------------------

Hi Alexander !

>Does anyone know, could I use PS/2 2.88 floppy drive with
>ordinar PC (I have 2.88 floppy in BIOS on my Intel FX motherboard).
>I have bought one at local flea-market, and seems it have no
>power connector... ;-(

The PS/2 FDD differs a bit from "ordinary FDDs" - it has integrated
power within the data connector. I don't think that it will work with
generica systemboards - or will at least require massive rewiring and
cutting out unused wires. There were however 2.88MB FDDs from Sony for
OEM machines ... these had been used with the IBM PC-330/350 and
730/750.

For feeding the curiosity I'd added a 2.88MB pinout here:

            Pin-Out 34-pin double pin-row drives
                   3.5" 1.44 / 2.88MB PS/2
             (Mod. 35 / 40 / 56 / 57 / 76 / 77)
       OEM-manufacturers name: Mitsubishi MF356F-899MF
                 P/N 64F5996 / FRU 64F4148

     +-------------------------------------------------+
     |Pin|Signal Name         |Pin|Signal Name         |
     |---+--------------------+---+--------------------|
     | 1 |Ground              | 2 |Data Rate Sel. 1    |
     |---+--------------------+---+--------------------|
     | 3 |+5 Vdc              | 4 |Drive Type ID 1     |
     |   |                    |   |Drive Status 1 +    |
     |---+--------------------+---+--------------------|
     | 5 |Ground              | 6 |+12 Vdc             |
     |---+--------------------+---+--------------------|
     | 7 |Ground              | 8 |- Index             |
     |---+--------------------+---+--------------------|
     | 9 |Drive Type ID 0     |10 |Reserved            |
     |   |Drive status 0 +    |   |                    |
     |---+--------------------+---+--------------------|
     |11 |Ground              |12 |- Drive Select      |
     |   |Drive status 2      |   |                    |
     |---+--------------------+---+--------------------|
     |13 |Ground              |14 |- Security Cmd. +   |
     |---+--------------------+---+--------------------|
     |15 |Ground              |16 |- Motor Enable      |
     |---+--------------------+---+--------------------|
     |17 |Media Type ID 1     |18 |- Direction In      |
     |   |Drive status 3 +    |   |                    |
     |---+--------------------+---+--------------------|
     |19 |Ground              |20 |- Step              |
     |---+--------------------+---+--------------------|
     |21 |Ground              |22 |- Write Data        |
     |---+--------------------+---+--------------------|
     |23 |Ground              |24 |- Write Enable      |
     |---+--------------------+---+--------------------|
     |25 |Ground              |26 |- Track 00          |
     |---+--------------------+---+--------------------|
     |27 |Media Type ID 0     |28 |- Write Protect     |
     |   |Drive status 2 +    |   |                    |
     |---+--------------------+---+--------------------|
     |29 |Ground              |30 |- Read Data         |
     |---+--------------------+---+--------------------|
     |31 |Ground              |32 |- Head 1 Select     |
     |---+--------------------+---+--------------------|
     |33 |Data Rate Sel. 0    |34 |- Diskette Change   |
     +-------------------------------------------------+

     + The drive status and security command signals are
     used on an optional diskette drive that provides
     removable media security RMS If both a 2.88 MB and
     a 1.44 MB diskette drive are installed, the security
     functions of the 2.88 MB drive are disabled.

     NOTE: The media type ID  signals are used for 2.88 MB
     diskette drives only. If both a 2.88 MB and a 1.44 MB
     diskette drive are installed, the media type ID
     signals are disabled.

--
Very friendly greetings from Peter in Germany
[Image]http://members.aol.com/mcapage0/mcaindex.htm[Image]

*** Direct replies to: [Image][email protected][Image] only ! ***
-------------------------cut-----------------------

Servus, Willy!
======================<end>=================================


Bye,
  Vitus

---
* Origin: And God said, "Windows 95", and the whole world crashed (2:2474/424.1)