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Hard Drive: RODIME: RO5090 75MB 5.25"/HH MFM ST506




R O 5 0 9 0    RODIME
NO MORE PRODUCED                                      Native|  Translation
                                                      ------+-----+-----+-----
Form                 5.25"/HH              Cylinders    1224|     |     |
Capacity form/unform    75/   89 MB        Heads           7|     |     |
Seek time   / track  28.0/ 5.0 ms          Sector/track   17|     |     |
Controller           MFM / ST506           Precompensation 65535
Cache/Buffer               KB              Landing Zone     1223
Data transfer rate    0.625 MB/S int       Bytes/Sector      512
                      0.625 MB/S ext
Recording method     MFM                            operating  | non-operating
                                                  -------------+--------------
Supply voltage     5/12 V       Temperature *C        10 50    |
Power: sleep              W     Humidity     %        10 85    |
       standby            W     Altitude    km                 |
       idle               W     Shock        g         2       |     30
       seek               W     Rotation   RPM      3600
       read/write         W     Acoustic   dBA
       spin-up            W     ECC        Bit   24
                                MTBF         h      30000
                                Warranty Month
Lift/Lock/Park     NO           Certificates                                  

Layout

RODIME RO 5065/5090 RIGID DISK DRIVE USER MANUAL PN USM-21550

  +---------------------------------------------------------+  1
  |                                              (under PCB)|XX P3
  |                                                         |XX
  |++LED                                                    |
  |++                                              +---+    |XX
  |                                            EPROM   |    |XX P2
  |                                                |   |    |XX
  |                                                +---+    |X1
  |                                                         |
  |                                                * *4     |XX
  |                                         Drive  * *3     |XX
  |                                         Select * *2     |XX
  |                                                * *1 ++  |XX
  |                                          Terminator ||  |XX
  |                                          Resistor   ||  |XX P1
  |                                                     ||  |XX
  |                                                     ++  |X1
  +---------------------------------------------------------+

      2    P1       34  2    P2    20
     +XXXXXXXXXXXXXXXX--XXXXXXXXXXXX--------+
     |1             33  1          19XXXXXXX|
     |                                  P3 1|
     |                                      |
     +--------------------------------------+
                                     Power

Jumpers

RODIME RO 5065/5090 RIGID DISK DRIVE USER MANUAL PN USM-21550

Jumper Setting
==============

x = Jumpers set at factory

Up to four drives may be connected to any host in a daisy-chain
fashion. Drive numbering is effected by drive selector pins which are
connected by means of a jumper provided. To identify a drive as
number 1, short the pins furthest from the EPROM. All daisy-chained
drives should have the line terminator pack removed except for the
last drive in the chain.

All drives are shipped for single usuage; drive 1 selected and the
terminator pack present.

Note that in the multiple drive configuration, all the DATA interface
lines are radially connected to the host.

    STANDARD SYSTEN WITH FOUR DRIVES
   +-----------+---------+---------+---------+---------+
   | Drive     |         |         |         |         |
   | Select    |Pins 1   |Pins 2   |Pins 3   |Pins 4   |
   +-----------+---------+---------+---------+---------+
 x | Drive 1   |CLOSED   |OPEN     |OPEN     |OPEN     |
   +-----------+---------+---------+---------+---------+
   | Drive 2   |OPEN     |CLOSED   |OPEN     |OPEN     |
   +-----------+---------+---------+---------+---------+
   | Drive 3   |OPEN     |OPEN     |CLOSED   |OPEN     |
   +-----------+---------+---------+---------+---------+
   | Drive 4   |OPEN     |OPEN     |OPEN     |CLOSED   |
   +-----------+---------+---------+---------+---------+

   IBM-STYLE SYSTEM WITH TWO DRIVES
   +-----------+---------+---------+---------+---------+
   | Drive     |         |         |         |         |
   | Select    |Pins 1   |Pins 2   |Pins 3   |Pins 4   |
   +-----------+---------+---------+---------+---------+
   | Drive C:  |OPEN     |CLOSED   |OPEN     |OPEN     |
   +-----------+---------+---------+---------+---------+
   | Drive D:  |OPEN     |CLOSED   |OPEN     |OPEN     |
   +-----------+---------+---------+---------+---------+
 To install any hard disk drive in an IBM AT, drive address must be
 configured as the SECOND drive, regardless of whether it is being
 used as drive C: or D:.

 P3  DC Power and pin connector assignments
 ------------------------------------------
     +--------------+
     |+-----J3-----+|  pin 1    +12 VDC
     || 4  3  2  1 ||  pin 2    +12 Volts Return
     |+------------+|  pin 3    + 5 Volts Return
     +--------------+  pin 4    + 5 VDC

Install

RODIME RO 5065/5090 RIGID DISK DRIVE USER MANUAL PN USM-21550

Notes on installation
=====================

Recommended Drive mounting
--------------------------

     horizontally             vertically
   +-----------------+   +--+             +--+ +------------------+
   |                 |   |  +-----+ +-----+  | |                  | x
   |                 |   |  |     | |     |  | x+----------------+x
 +-+-----------------+-+ |  |     | |     |  | ||x              x||
 +---------------------+ |  |     | |     |  | ||  x          x  ||
                         |  |     | |     |  | ||    x      x    ||
      x           x      |  |     | |     |  | ||      x  x      ||
 +------x------x-------+ |  +-----+ +-----+  | ||       xx       ||
 +-+------x--x-------+-+ +--+             +--+ ||     x    x     ||
   |       xx        |                         ||   x        x   ||
   |     x    x      |                         || x            x ||
   +---x--------x----+                         |x                x|
     x            x                           x++----------------++x

A sub-frame with tapped holes is provided with each drive and permits
base or side mounting. The frame is fixed to the module via shock-
absorbing mounts. The drive may be oriented in any axis. When
installing into an enclosure, at least 0.1 inch clearance must be
maintained around the entire drive to allow vibration isolation and
to prevent obstruction of the breather filter.
(4 mounting holes thread 6-32 2A; max. Screw length 0.25.)
(8 mounting holes thread 6-32 2A; max. Screw length 0.125)

Cable Interconnection
---------------------

                 Standard System with four drives
              --------------------------------------
       HOST                                       RO 5000 units
   +Controller-+                                +-----------------+
   |           +---o---Control------------------+J1     Drive 1   |
   | Drive 1   +---+------------Data------------+J2               |
   | DATA      |   |                  +-Power---+J3        ...    |
   |           |   |                  |         +-----------------+
   |           |   |                  |
   |           |   |                  |         +-----------------+
   |           |   o----Control-------+---------+J1     Drive 2   |
   | Drive 2   +---+------------Data--+---------+J2               |
   | DATA      |   |                  o-Power---+J3        ...    |
   |           |   |                  |         +-----------------+
   |           |   |                  |
   |           |   |                  |         +-----------------+
   |           |   o----Control-------+---------+J1     Drive 3   |
   | Drive 3   +---+------------Data--+---------+J2               |
   | DATA      |   |                  o-Power---+J3        ...    |
   |           |   |                  |         +-----------------+
   |           |   |                  |
   |           |   |                  |         +-----------------+
   |           |   +----Control-------+---------+J1     Drive 4   |
   | Drive 4   +----------------Data--+---------+J2               |
   | DATA      |                      |   +-----+J3        XXX    |
   +-----------+                      |   |     +-----------------+
   +-----------+                      |   |
   |Power      +----------------------o---+
   |Supply     |
   +-----------+

... = Terminator Pack removed

XXX = Terminator Pack installed

                 IBM-STYLE System with two drives
              --------------------------------------
                              CONTROL cable split
       HOST                   and twisted here    RO 5000 units
   +Controller-+                    |           +-----------------+
   |           |                 +-- -----------+J1     Drive 1   |
   |           |                 |              |      ..         |
   | Drive 1   +-----------------+--------------+J2    ** Jumper  |
   | DATA      |                 |              |      ..         |
   |           |        +--------+--------------+J3    ..  XXX    |
   |           |        |        |              +-----------------+
   |           |        |        |
   |           |        |        |
   |           |        |        |
   |           |        |        |              +-----------------+
   |CONTROL    +--------+--------+--------------+J1     Drive 2   |
   |           |        |                       |      ..         |
   | Drive 2   +--------+-----------------------+J2    ** Jumper  |
   | DATA      |        |                       |      ..         |
   |           |        |          +------------+J3    ..  xxx    |
   +-----------+        |          |            +-----------------+
   +-----------+        |          |
   |Power      +--------+----------+
   |Supply     |
   +-----------+

... = Terminator Sip removed

XXX = Terminator Sip in place

Connectors
----------
The RO 5000 drive interfaces to host system via the ST412/506 inter-
face which was introduced by Seagate Technology and has become an
industry standard for 5.25 inch fixed disk drives. There are separate
connectors for DATA (MFM code), CONTROL/STATUS and dc POWER. The
convention for CONTROL is that a TTL logical zero is true and a TTL
logical one is false. Up to four drives may be connected to a host
system and each drive is provided with a four pole jumper for
selection. The CONTROL lines may be daisy-chained, but the DATA lines
must be radially (individually) connected to the host.

Control signals for the drive are provided via the 34 pin edge
connector (P1/J1). The pins are numbered 1 through 34 with the even
pins located on the component side of the board. Pin 2 is located on
the end of the board connector farthest away from the DC power
connector. A key slot is provided between pins 4 and 6. The
recommended mating connector is AMP ribbon connector A/N 88373-3.

Radial connection of read/write DATA signals is provided by a 20 pin
edge connector (P2/J2). The pins are numbered 1 through 20 with the
even pins located on the component side of the board. The recommended
mating connector is AMP ribbon connector A/N 88373-6.

Power (dc) is provided by a four pin AMP Mate-N-Lock connector
P/N 350211-1, mounted on the solder side of the board (P3/J3). The
recommended mating connector is AMP P/N 1-480424-0 utilizing AMP pins
P/N 350078-4.

IBM PC, PC XT and Compatibles
=============================

Drive Address Configuration
---------------------------
The drive address must be configured as the first or second drive,
depending on whetherit is being used as drive C: or D:, and what type
CONTROL cable is being used. An IBM PC XT or AT cable contains a
twisted section which requires both drive addresses to be set as
drive 2. Most other cables are "straight thru", so drive 1 becomes C:
and drive 2 becomes D:.

Drive Terminator
----------------
If the drive is going to be used as drive C: and the only hard drive
in system, leave the terminator installed. If the drive is going to
be one of two hard drives used, the terminator resistor pack must be
removed if is NOT the last drive on the CONTROL cable.

Cable Connection
----------------
A single CONTROL cable for all hard disks installed is used in a
daisy chain fashion and a 20 conductor DATA cable must be provided
for each drive to be installed. The PC should provide a power cable.

On all RODIME products, the edge connectors are cut with a key slot
that identifies the pin 1 end. This should coincide with pin 1 on the
controller connectors.
--------------------------------------------------------------------

IBM AT and Compatibles
======================

Drive Address Configuration
---------------------------
To install any hard disk drive in an IBM AT, the drive address must
be configured as the SECOND drive, regardless of whetherit is being
used as drive C: or D:.

If the drive is going to be used in the AT as drive C:, leave the
terminator installed. If the drive is going to be used as drive D:,
the terminator pack must be removed.

Cable Connection
----------------
The AT provides one of the two necessary cables, the CONTROL cable,
in addition to the POWER cable. A 20 conductor, 20 pin "header to
edge connector" DATA cable must be provided for each drive to be
installed. For drive C:, the 20 pin header labeled J4 on the AT
controller should be used. For drive D:, use J3.

On all RODIME products, the edge connectors are cut with a key slot
that identifies the pin 1 end. This should coincide with pin 1 on the
controller J connectors.
--------------------------------------------------------------------

Controllers
-----------
In general, any controller which will operate the RO 200, RO 200E,
RO 350 and RO 3000 Series disk drives will also operate the RO 5000
Series disk drive. However, the controller must be able to set the
step interval within the range of 5 us to 15 ms and address up to
1224 cylinders to utilize full capacity. Further information is
available from the RODIME or from the controller manufacturers them-
seleves.

Features

RODIME RO 5065/5090 SER. RIGID DISK DRIVE USER MANUAL PN USM-21550

General Description
===================

The RODIME RO 5000 Series disk drives are random access storage
devices with three or four rigid 5.25 inch disks used as storage
media. One disk surface is dedicated to continuous servo positioning
data. High performance and reliability are achieved through the use
of a rotary voice-coil positioner and a closed loop servo positioning
system.

Indicators
----------
One red LED indicator is provided on the facia and is illuminated
when the drive is READY and SELECTED. This LED is also used to
indicate fault conditions in the drive. During power-on the LED will
flash until the drive is READY and will go off if the drive is not
SELECTED. If an error condition exists, a fault code will be flashed
on the LED.

Front Panel Fault Codes
-----------------------
In addition to its normal function of indicating READY and SELECTED
status, the front panel LED is used to flash error messages should
certain fault conditions arise on the drive. A four bit binary code
is used (long flash = logical 1, short flash = logical 0) with the
most significant bit occuring first:

e.g. Short, short, long, short = 2 (0010)

    +------------+--------------------------------------------------+
    | Fault Code | Description                                      |
    +------------+--------------------------------------------------+
    | 01 (0001)  | No sync                                          |
    +------------+--------------------------------------------------+
    | 02 (0010)  | No Track Zero                                    |
    +------------+--------------------------------------------------+
    | 03 (0011)  | Motor speed outside +/- 1% tolerance at end of   |
    |            | power-up sequence                                |
    +------------+--------------------------------------------------+
    | 04 (0100)  | Motor speed outside +10%, -5% tolerance in normal|
    |            | operation                                        |
    +------------+--------------------------------------------------+
    | 05 (0101)  | Track cross time out / Seek error                |
    +------------+--------------------------------------------------+
    | 06 (0110)  | STEP received while WRITE GATE is true           |
    +------------+--------------------------------------------------+
    | 07 (0111)  | WRITE FAULT                                      |
    +------------+--------------------------------------------------+
    | 08 (1000)  | Microprocessor self-test fail (RAM)              |
    +------------+--------------------------------------------------+
    | 09 (1001)  | Microprocessor self-test fail (ROM)              |
    +------------+--------------------------------------------------+
    | 10 (1010)  | No INDEX                                         |
    +------------+--------------------------------------------------+
    | 11 (1011)  | Motor not up to speed                            |
    +------------+--------------------------------------------------+

Fault codes 1, 2, 3, 8, 9, 10, and 11 are valid during the intitial
power-up sequence of the drive. The remaining codes are valid during
normal operation. All fault codes are latched by the processor and
the drive must be restarted to clear.

Illegal Addresses Map
---------------------
Each drive has a label indicating the illegal of defective areas on
the disk in bytes from index form. These illegal areas have been
identified at the factory and contain a repeatable disk defect of one
bit in length or greater. No such illegal address will exist on
cylinder 0.

Illegal Addresses RO 5065 RO 5090
---------------------------------------
Maximum allowed 30 40

Seek Time, including settling
-----------------------------
ramp mode step rate = 5 us
Track-to-Track = 5 ms
Average = 28 ms
Maximum = 55 ms

Write Pre-Compensation
----------------------
No Write Precompensation is necessary on the RO 5000 Series disk
drives.

Low Level Format
----------------
A "Low-Level Format" will be required if the drive has not been used
in a DOS environment previously. All new RODIME drives require a low
level format.













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