TM03 magtape controller: Difference between revisions

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The '''TM03''' magtape controllers is a [[MASSBUS]] device controller, used with 1/2" magtape drives; supported drives include the [[TE16]] (45 inches per second), [[TU45]] (75 IPD) and [[TU77]] (125 IPS). It can handle 800 bits/inch ([[NRZI]]) and 1600 bits/inch (PE - Phase Encoded).
The '''TM03''' magtape controller is a [[MASSBUS]] device controller, used with 1/2" magtape drives; supported drives include the [[TE16]] (45 inches per second), [[TU45]] (75 IPS) and [[TU77]] (125 IPS). It can handle 800 bits/inch ([[NRZI]]) and 1600 bits/inch (PE - Phase Encoded).


It can control up to 8 drives, although the TM03 and drives count as only a single MASSBUS entity. The TM03 controller connects to all the drives over a 'slave bus'; all the drives are identical (unlike in the [[TM11]]/[[TU10]] system.
A TM03 can control up to 8 drives, although the TM03 and drives count as only a single MASSBUS entity. The TM03 controller connects to all the drives over a 'slave bus'; all the drives are identical (unlike in the [[TM11]]/[[TU10]] system.


==Implementation==
==Implementation==


The TM03 is implemented as a set of [[DEC card form factor|larger]] custom boards, all of which plug into a custom hex-high nine-slot system unit (for a BA11, etc box). The modules include three hex-size boards, six quad-size modules, and six dual-high modules.
The TM03 is implemented as a set of boards, all of which plug into a custom [[DEC card form factor|hex]]-high nine-slot [[backplane]], usually moounted in a special box in the first tape drive rack. The modules include three hex-size boards, six quad-size modules, and six dual-high modules.


The hex modules are:
The hex modules are:
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* M8933 - Tape Control Common Mode
* M8933 - Tape Control Common Mode
* M8909 - MASSBUS Interface (the documentation refers to both the M8909, and M8909-YA)
* M8909 - MASSBUS Interface (the documentation refers to both the M8909, and M8909-YA)
* Bit Fiddler
** M8906 for use with a PDP-11
** M8906 for use with a PDP-11
** M8915 for use with a PDP-10 and TE16 or TU45
** M8915 for use with a PDP-10 and TE16 or TU45
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The quad modules are:
The quad modules are:


* 3 x M8901 - Data Sync - PE
* 3 x M8901 - Data Sync (PE)
** M8901-YA for the TE16
** M8901-YA for the TE16
** M8901-YB for the TU45
** M8901-YB for the TU45
** M8901-YC for the TU77
** M8901-YC for the TU77
* M8932 - Tape Control - PE
* M8932 - Tape Control (PE)
* M8934 - Tape Control - NRZI
* M8934 - Tape Control (NRZI)
** M8934 for the TE16 and TU77
** M8934 for the TE16 and TU77
** M8934-YA for the TU45
** M8934-YA for the TU45
* M8905-YB - Maintainence Register
* M8905-YB - Maintenance Register


The dual modules are:
The dual modules are:


* M8937
* M8937 - Control and Write Drivers
* M8908-YA
* M8908-YA
* M8908
* M8908
* 3 x M5903 or M5903-YA
* 3 x M5903 or M5903-YA


The first three are the drive slave bus intergface; the last three are the MASSBUS interface.
The first three are the drive slave bus interface; the last three are the MASSBUS interface.


==Drive bus==
==Drive bus==

Revision as of 19:32, 7 November 2016

The TM03 magtape controller is a MASSBUS device controller, used with 1/2" magtape drives; supported drives include the TE16 (45 inches per second), TU45 (75 IPS) and TU77 (125 IPS). It can handle 800 bits/inch (NRZI) and 1600 bits/inch (PE - Phase Encoded).

A TM03 can control up to 8 drives, although the TM03 and drives count as only a single MASSBUS entity. The TM03 controller connects to all the drives over a 'slave bus'; all the drives are identical (unlike in the TM11/TU10 system.

Implementation

The TM03 is implemented as a set of boards, all of which plug into a custom hex-high nine-slot backplane, usually moounted in a special box in the first tape drive rack. The modules include three hex-size boards, six quad-size modules, and six dual-high modules.

The hex modules are:

  • M8933 - Tape Control Common Mode
  • M8909 - MASSBUS Interface (the documentation refers to both the M8909, and M8909-YA)
  • Bit Fiddler
    • M8906 for use with a PDP-11
    • M8915 for use with a PDP-10 and TE16 or TU45
    • M8915-YA for use with a PDP-10 and TU77

The quad modules are:

  • 3 x M8901 - Data Sync (PE)
    • M8901-YA for the TE16
    • M8901-YB for the TU45
    • M8901-YC for the TU77
  • M8932 - Tape Control (PE)
  • M8934 - Tape Control (NRZI)
    • M8934 for the TE16 and TU77
    • M8934-YA for the TU45
  • M8905-YB - Maintenance Register

The dual modules are:

  • M8937 - Control and Write Drivers
  • M8908-YA
  • M8908
  • 3 x M5903 or M5903-YA

The first three are the drive slave bus interface; the last three are the MASSBUS interface.

Drive bus

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