Difference between revisions of "TU81 Streaming Tape Unit"

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m (Jnc moved page TU81 to TU81 magtape drive: Follow naming system)
m (External links: +Bitsavers doc folder)
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==External links==
 
==External links==
  
* [http://www.bitsavers.org/pdf/dec/magtape/tu81/EK-TUA81-TM_002_Nov85.pdf EK-TUA81-TM_002 TU81/TA81 Technical Manual]
+
* [http://www.bitsavers.org/pdf/dec/magtape/tu81/ TU81] - documentation at [[Bitsavers]]
 +
** [http://www.bitsavers.org/pdf/dec/magtape/tu81/EK-TUA81-TM_002_Nov85.pdf EK-TUA81-TM_002 TU81/TA81 Technical Manual]
  
 
[[Category: DEC Tape Drives]]
 
[[Category: DEC Tape Drives]]

Revision as of 02:59, 9 January 2024


TU81
Manufacturer: Digital Equipment Corporation
Media: standard half-inch tape
Tape density: 1600 bpi (PE), 6250 bpi (GCR)
Tape speed: 75 inch/sec (high speed streaming mode) or 25 inch/sec (start/stop mode or low-speed streaming mode)
Year Introduced: 1984/1985


A TU81

Big 9-track magnetic tape drive for heavy backup duties.

The TU81 servo/control module uses a Motorola 6802 processor, a variant of the 6800 with 128 bytes of internal RAM and an internal clock oscillator. There is also a 6821 Parallel Interface Adapter chip used for communication between the Servo/Control microprocessor and the Formatter Write microprocessor (on a different board).

Two 6840 Programmable Counter / Programmable Timer Module chips are used to count servo tachs.

The firmware is stored in two ROM chips.

External links