Difference between revisions of "RL02 disk drive"
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| name = RL02 | | name = RL02 | ||
| manufacturer = [[Digital Equipment Corporation]] | | manufacturer = [[Digital Equipment Corporation]] | ||
| − | |}} | + | | controller = [[RL11 disk controller|RL11]] ([[UNIBUS]]) |
| + | | capacity = 10.4 Mbytes (formatted) | ||
| + | | transfer rate = 512 Kbytes/sec<br>3.9 usec/word (peak) | ||
| + | | average access time = 67.5 msec | ||
| + | | rpm = 2400 | ||
| + | | revolution time = 12.5 msec | ||
| + | | one track seek = 15 msec | ||
| + | | average seek = 55 msec | ||
| + | | maximum seek = 100 msec | ||
| + | | head switch = 8 msec (maximum) | ||
| + | | surfaces = 2 | ||
| + | | tracks = 512 | ||
| + | | sectors = 40 | ||
| + | | words per sector = 128 | ||
| + | | tracks per inch = 250 | ||
| + | | density = 3725 bpi (maximum) | ||
| + | | recording method = [[Modified Frequence Modulation]] (MFM) | ||
| + | | start time = 40 seconds | ||
| + | | stop time = 30 seconds | ||
| + | | physical size = 19" W x 10-1/2" H x 25" L | ||
| + | | weight = 55 pounds | ||
| + | | power consumption = 160VA (running); 550 VA (starting, 10 seconds) | ||
| + | }} | ||
| + | [[Image:rl02drive.jpg|thumb|left|An RL02 drive]] | ||
| − | [[ | + | 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]]. |
| − | [[ | ||
| + | The [[QBUS]] controllers are the [[RLV11]] and [[RLV12]], the latter being the [[QBUS|Q22]] version. | ||
| − | + | ==4.3 BSD disktab== | |
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| − | = 4.3 BSD disktab = | ||
<pre> | <pre> | ||
rb02|RB02|DEC RL02 on 730 IDC:\ | rb02|RB02|DEC RL02 on 730 IDC:\ | ||
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==Emulating the RL02== | ==Emulating the RL02== | ||
| + | |||
| + | [[Image:Rl02.jpg|thumb|right|An RL02 cartridge]] | ||
| + | |||
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. | 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. | ||
* [http://www.pdp11gy.com/doneE.html Home page of project] | * [http://www.pdp11gy.com/doneE.html Home page of project] | ||
* [http://www.vintage-computer.com/vcforum/album.php?albumid=184&attachmentid=12300 Picture of the simulator connected to a PDP-11/53] | * [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]] | [[Category: DEC Disk Drives]] | ||
Revision as of 14:24, 5 October 2017
| RL02 | |
| Manufacturer: | Digital Equipment Corporation |
|---|---|
| Drive Controller(s): | RL11 (UNIBUS) |
| Capacity: | 10.4 Mbytes (formatted) |
| Transfer Rate: | 512 Kbytes/sec 3.9 usec/word (peak) |
| Average Access Time: | 67.5 msec |
| Revolutions per Minute: | 2400 |
| 1/2 Revolution Time: | 12.5 msec |
| One Track Seek Time: | 15 msec |
| Average Seek Time: | 55 msec |
| Maximum Seek Time: | 100 msec |
| Head Switching Time: | 8 msec (maximum) |
| Total Surfaces: | 2 |
| Tracks per Surface: | 512 |
| Sectors per Track: | 40 |
| Words per Sector: | 128 |
| Tracks per Inch: | 250 |
| Density: | 3725 bpi (maximum) |
| Recording Method: | Modified Frequence Modulation (MFM) |
| Start Time: | 40 seconds |
| Stop Time: | 30 seconds |
| Physical Size: | 19" W x 10-1/2" H x 25" L |
| Weight: | 55 pounds |
| Power Consumption: | 160VA (running); 550 VA (starting, 10 seconds) |
The RL02 is the high-density version of the RL01 disk drive, with twice as many tracks per surface, introduced in 1978 by DEC.
The QBUS controllers are the RLV11 and RLV12, the latter being the Q22 version.
4.3 BSD disktab
rb02|RB02|DEC RL02 on 730 IDC:\ :ty=removable:se#256:ns#40:nt#2:nc#32:\ :pa#15884:ba#4096:fa#1024:\ :pb#4480:pc#20480:
Emulating the RL02
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.
* Home page of project * Picture of the simulator connected to a PDP-11/53
