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| − | '''TU79''' was the name used for two entirely different [[magnetic tape drive]]s from [[Digital Equipment Corporation|DEC]]: one from the late 1960's, and one from the late 1980's. | + | '''TU79''' was the name used for two entirely different [[magnetic tape drive]]s from [[Digital Equipment Corporation|DEC]]: |
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| − | ==Early TU79==
| + | * [[TU-79 Tape Transport]], from the late 1960's; |
| | + | * [[TU79 Magnetic Tape Transport]], from the late 1980's. |
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| − | Very little is known of this one: it operated at "75 in/s [tape motion rate] with a maximum transfer rate of 60 kc". It could be configured with either 7-track or 9-track [[head]]. It could be used on either that [[PDP-9]] (with the [[TC59 Tape Control Unit]]), or the [[PDP-10]] (with the [[TM10 Magnetic Tape Control]]).
| + | {{disambiguation}} |
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| − | ==Later TU79==
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| − | The later TU79 seems to be a [[TU78 Magnetic Tape Transport|TU78]] with minor changes. Although one rumour had it that the changes were mostly cosmetic, a DEC sales brochure maintained that "Re-designed read/write electronics dramatically reduce the .. soft error rate ... These changes also improve the drive's ability to read tapes of marginal quality ... Mechanical changes (re-designed card cage, improved door, and a new power supply) .. enhance the drive's reliability, reduce the need for Field Service adjustments".
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| − | The TU79 is configured to have a [[TM78 Magnetic Tape Formatter]], to interface to a [[MASSBUS]].
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| − | ==Further reading==
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| − | ===Later TU79===
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| − | * ''TA79, TU79 Magnetic Tape Subsystem Service Manual'' (EK-OTA79-SV)
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| − | * ''TA79, TU79 Magnetic Tape Subsystem Installation Manual'' (EK-OTA79-IN)
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| − | * ''TA79, TU79 Magnetic Tape Subsystem Owner's Manual'' (EK-OTA79-OM)
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| − | ''None online''
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| − | ==External links==
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| − | ===Early TU79===
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| − | * [http://www.bitsavers.org/pdf/dec/pdp9/DEC-9A-I3BA-D_TC-59_Nov67.pdf TC-59 Magnetic Tape Control Instruction Manual] - mentioned on pg. 1-1 (pg. 8 of the PDF)
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| − | * [http://bitsavers.org/pdf/dec/pdp10/periph/DEC-10-I4AA-D_TM10_Maint_Aug68.pdf TM10 Magnetic Tape Control Maintenance Manual] (DEC-10-I4AA-D) - mentioned very briefly on pg. 1-1 (pg. 8 of the PDF)
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| − | * [https://www.computerhistory.org/collections/catalog/102756716 TU79 magnetic tape drive] - catalog entry for publicity photos, April 1969
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| − | ===Later TU79===
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| − | * [http://www.bitsavers.org/pdf/dec/magtape/ta79/EK-OTA79-TM-001_Mar88.pdf TA79, TU79, TA78, TU78 Magnetic Tape Subsystem Technical Manual] (EK-OTA79-TM-001)
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| − | * [http://www.bitsavers.org/pdf/dec/brochures/DEC-TA79+TA81-MagneticTapeSubsystems.pdf TA79 and TA81 Magnetic Tape Subsystems] - sales brochure; covers the TU79 also
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| − | [[Category: DEC Tape Drives]]
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| − | [[Category: MASSBUS Tape Drives]]
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