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| − | {{Infobox Disk drive
| + | #Redirect [[RL01/02 disk drive]] |
| − | | name = RL02
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| − | | manufacturer = [[Digital Equipment Corporation]]
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| − | | controller = [[RL11 disk controller|RL11]] ([[UNIBUS]])
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| − | | capacity = 10.4 Mbytes (formatted)
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| − | | transfer rate = 512 Kbytes/sec<br>3.9 usec/word (peak)
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| − | | average access time = 67.5 msec
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| − | | rpm = 2400
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| − | | revolution time = 12.5 msec
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| − | | one track seek = 15 msec
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| − | | average seek = 55 msec
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| − | | maximum seek = 100 msec
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| − | | head switch = 8 msec (maximum)
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| − | | surfaces = 2
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| − | | tracks = 512
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| − | | sectors = 40
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| − | | words per sector = 128
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| − | | tracks per inch = 250
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| − | | density = 3725 bpi (maximum)
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| − | | recording method = [[Modified Frequency Modulation]] (MFM)
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| − | | start time = 40 seconds
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| − | | stop time = 30 seconds
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| − | | physical size = 19" W x 10-1/2" H x 25" L
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| − | | weight = 55 pounds
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| − | | power consumption = 160VA (running); 550 VA (starting, 10 seconds)
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| − | }}
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| − | [[Image:rl02drive.jpg|thumb|left|An RL02 drive]]
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| − | The RL02 is the high-density version of the [[RL01 disk drive|RL01]] [[disk|disk drive]], with twice as many tracks per surface, introduced in 1978 by [[Digital Equipment Corporation|DEC]].
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| − | The [[QBUS]] controllers are the [[RLV11]] and [[RLV12]], the latter being the [[QBUS|Q22]] version.
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| − | ==4.3 BSD disktab==
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| − | <pre>
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| − | rb02|RB02|DEC RL02 on 730 IDC:\
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| − | :ty=removable:se#256:ns#40:nt#2:nc#32:\
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| − | :pa#15884:ba#4096:fa#1024:\
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| − | :pb#4480:pc#20480:</pre>
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| − | ==Emulating the RL02==
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| − | | |
| − | [[Image:Rl02.jpg|thumb|right|An RL02 cartridge]]
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| − | Reinhard Heuberger has created an open source emulator for the RL02 (and RL01) using a Terasic DE0-Nano Altera Cyclone IV FPGA board, extended with necessary interfacing hardware and an SD card slot. The emulator can be used with a real PDP-11, for example.
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| − | * [http://www.pdp11gy.com/doneE.html Home page of project]
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| − | * [http://www.vintage-computer.com/vcforum/album.php?albumid=184&attachmentid=12300 Picture of the simulator connected to a PDP-11/53]
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| − | [[Category: DEC Disk Drives]]
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