Difference between revisions of "TU58 DECtape II"
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| − | + | {{Infobox Tape drive | |
| − | + | | image = tu58.jpg | |
| + | | name = TU58 | ||
| + | | caption = TU58 drive (in standalone case) | ||
| + | | manufacturer = [[Digital Equipment Corporation|DEC]] | ||
| + | | controller = built in | ||
| + | | interface = [[asynchronous serial line]] or [[parallel]] | ||
| + | | media = [[DECtape II]] | ||
| + | | tape speed = 30 ips (read/write)<br>60 ips (search) | ||
| + | | tape density = 800 bpi | ||
| + | | size = 5.2"H x 13.6"D x 19"W | ||
| + | | weight = 20 lbs | ||
| + | }} | ||
| + | |||
| + | The '''TU58 DECtape II''' [[magnetic tape drive]] used the [[DECtape-II]] cartridge, which could hold 256KB. A TU58 unit contained one or two drives, but with two, only one could be operated at a time. It was available in both a standalone case (suitable for desktop usage, or mounting in a 19" rack), or as a bare unit (for mounting in some other unit, such as a [[PDP-11/44]]); in either, it required an external source of power (an optional [[power supply]] was available with the standalone case). | ||
| + | |||
| + | The unit included control [[electronics]], including a [[microprocessor]] and [[firmware]]; two versions of the control electronics were available. One (the TU58-XB, [[DEC part number]] 54-13489) provided an [[asynchronous serial line]] interface, for connection to the host computer via a standard serial line [[device controller]]; the other (the TU58-XC, part number 54-13491) provided a [[parallel]] interface. The former supported both [[EIA RS-232 serial line interface|RS-232]] and [[EIA RS-422 serial line interface|RS-422]]; the [[baud rate]] could be set from 8.4 Kbaud to 150 baud by configuration [[jumper]]s. | ||
| + | |||
| + | Average access time using [[random access]] was 9.3 seconds; maximum was 28. Data was verified by a [[checksum]] on each record. | ||
| + | |||
| + | ==External links== | ||
| + | |||
| + | * [http://www.bitsavers.org/pdf/dec/dectape/tu58/EK-0TU58-UG-004_TU58_DECtape_II_Users_Guide_Dec83.pdf TU58 DECtape II User Guide] | ||
| + | * [http://www.bitsavers.org/pdf/dec/dectape/tu58/EK-0TU58-TM-001_TU58_DECtape_II_Technical_Manual_Sep79.pdf TU58 DECtape II Technical Manual] | ||
| + | * [http://www.bitsavers.org/pdf/dec/dectape/tu58/TU58_Engineering_Specification_Jun78.pdf TU58 Engineering Specification] | ||
[[Category: DEC Tape Drives]] | [[Category: DEC Tape Drives]] | ||
Revision as of 23:16, 24 August 2021
| TU58 | |
 TU58 drive (in standalone case) | |
| Manufacturer: | DEC |
|---|---|
| Drive Controller(s): | built in |
| Interface Type: | asynchronous serial line or parallel |
| Media: | DECtape II |
| Tape density: | 800 bpi |
| Tape speed: | 30 ips (read/write) 60 ips (search) |
| Size: | 5.2"H x 13.6"D x 19"W |
| Weight: | 20 lbs |
The TU58 DECtape II magnetic tape drive used the DECtape-II cartridge, which could hold 256KB. A TU58 unit contained one or two drives, but with two, only one could be operated at a time. It was available in both a standalone case (suitable for desktop usage, or mounting in a 19" rack), or as a bare unit (for mounting in some other unit, such as a PDP-11/44); in either, it required an external source of power (an optional power supply was available with the standalone case).
The unit included control electronics, including a microprocessor and firmware; two versions of the control electronics were available. One (the TU58-XB, DEC part number 54-13489) provided an asynchronous serial line interface, for connection to the host computer via a standard serial line device controller; the other (the TU58-XC, part number 54-13491) provided a parallel interface. The former supported both RS-232 and RS-422; the baud rate could be set from 8.4 Kbaud to 150 baud by configuration jumpers.
Average access time using random access was 9.3 seconds; maximum was 28. Data was verified by a checksum on each record.
