| blob | c17b7718897d20be31398d9159d6fcf9f5b809d2 |
1 LINUX ALLOCATED DEVICES
2 Maintained by H. Peter Anvin <hpa@zytor.com>
4 Last revised: December 16, 1999
6 This list is the Linux Device List, the official registry of allocated
7 device numbers and /dev directory nodes for the Linux operating
8 system.
10 The latest version of this list is included with the Linux kernel
11 sources. It is also available separately from
12 http://www.kernel.org/pub/linux/docs/device-list/ or
13 ftp://ftp.kernel.org/pub/linux/docs/device-list/. The LaTeX version
14 of this document is no longer maintained.
16 This document is included by reference into the Filesystem Hierarchy
17 Standard (FHS). The FHS is available from http://www.pathname.com/fhs/.
19 Allocations marked (68k/Amiga) apply to Linux/68k on the Amiga
20 platform only. Allocations marked (68k/Atari) apply to Linux/68k on
21 the Atari platform only.
23 This document is in the public domain. The author requests, however,
24 that semantically altered versions are not distributed without
25 permission of the author, assuming the author can be contacted without
26 an unreasonable effort.
28 In particular, please don't sent patches for this list to Linus, at
29 least not without contacting me first.
31 I do not have any information about these devices beyond what appears
32 on this list. Any such information requests will be deleted without
33 reply.
36 **** PLEASE READ THIS BEFORE SUBMITTING A DEVICE ENTRY ****
38 To have a major number allocated, or a minor number in situations
39 where that applies (e.g. busmice), please contact me with the
40 appropriate device information. Also, if you have additional
41 information regarding any of the devices listed below, or if I have
42 made a mistake, I would greatly appreciate a note.
44 I do, however, make two requests about the nature of your report.
45 This is necessary for me to be able to keep this list up to date and
46 correct in a timely manner. First of all, *please* include the word
47 "device" in the subject so your mail won't accidentally get buried! I
48 receive hundreds of email messages a day, so mail sent with other
49 subjects may very well get lost in the avalanche.
51 Second, please include a description of the device *in the same format
52 as this list*. The reason for this is that it is the only way I have
53 found to ensure I have all the requisite information to publish your
54 device and avoid conflicts.
56 Finally, sometimes I have to play "namespace police." Please don't be
57 offended. I often get submissions for /dev names that would be bound
58 to cause conflicts down the road. I am trying to avoid getting in a
59 situation where we would have to suffer an incompatible forward
60 change.
63 Your cooperation is appreciated.
66 0 Unnamed devices (e.g. non-device mounts)
67 0 = reserved as null device number
69 1 char Memory devices
70 1 = /dev/mem Physical memory access
71 2 = /dev/kmem Kernel virtual memory access
72 3 = /dev/null Null device
73 4 = /dev/port I/O port access
74 5 = /dev/zero Null byte source
75 6 = /dev/core OBSOLETE - replaced by /proc/kcore
76 7 = /dev/full Returns ENOSPC on write
77 8 = /dev/random Nondeterministic random number gen.
78 9 = /dev/urandom Faster, less secure random number gen.
79 block RAM disk
80 0 = /dev/ram0 First RAM disk
81 ...
82 7 = /dev/ram7 Eighth RAM disk
83 250 = /dev/initrd Initial RAM disk
85 Older kernels had /dev/ramdisk (1, 1) here.
86 /dev/initrd refers to a RAM disk which was preloaded
87 by the boot loader.
89 2 char Pseudo-TTY masters
90 0 = /dev/ptyp0 First PTY master
91 1 = /dev/ptyp1 Second PTY master
92 ...
93 255 = /dev/ptyef 256th PTY master
95 Pseudo-tty's are named as follows:
96 * Masters are "pty", slaves are "tty";
97 * the fourth letter is one of pqrstuvwxyzabcde indicating
98 the 1st through 16th series of 16 pseudo-ttys each, and
99 * the fifth letter is one of 0123456789abcdef indicating
100 the position within the series.
102 These are the old-style (BSD) PTY devices; Unix98
103 devices are on major 128 and above and use the PTY
104 master multiplex (/dev/ptmx) to acquire a PTY on
105 demand.
107 block Floppy disks
108 0 = /dev/fd0 Controller 0, drive 0, autodetect
109 1 = /dev/fd1 Controller 0, drive 1, autodetect
110 2 = /dev/fd2 Controller 0, drive 2, autodetect
111 3 = /dev/fd3 Controller 0, drive 3, autodetect
112 128 = /dev/fd4 Controller 1, drive 0, autodetect
113 129 = /dev/fd5 Controller 1, drive 1, autodetect
114 130 = /dev/fd6 Controller 1, drive 2, autodetect
115 131 = /dev/fd7 Controller 1, drive 3, autodetect
117 To specify format, add to the autodetect device number:
118 0 = /dev/fd? Autodetect format
119 4 = /dev/fd?d360 5.25" 360K in a 360K drive(1)
120 20 = /dev/fd?h360 5.25" 360K in a 1200K drive(1)
121 48 = /dev/fd?h410 5.25" 410K in a 1200K drive
122 64 = /dev/fd?h420 5.25" 420K in a 1200K drive
123 24 = /dev/fd?h720 5.25" 720K in a 1200K drive
124 80 = /dev/fd?h880 5.25" 880K in a 1200K drive(1)
125 8 = /dev/fd?h1200 5.25" 1200K in a 1200K drive(1)
126 40 = /dev/fd?h1440 5.25" 1440K in a 1200K drive(1)
127 56 = /dev/fd?h1476 5.25" 1476K in a 1200K drive
128 72 = /dev/fd?h1494 5.25" 1494K in a 1200K drive
129 92 = /dev/fd?h1600 5.25" 1600K in a 1200K drive(1)
131 12 = /dev/fd?u360 3.5" 360K Double Density(2)
132 16 = /dev/fd?u720 3.5" 720K Double Density(1)
133 120 = /dev/fd?u800 3.5" 800K Double Density(2)
134 52 = /dev/fd?u820 3.5" 820K Double Density
135 68 = /dev/fd?u830 3.5" 830K Double Density
136 84 = /dev/fd?u1040 3.5" 1040K Double Density(1)
137 88 = /dev/fd?u1120 3.5" 1120K Double Density(1)
138 28 = /dev/fd?u1440 3.5" 1440K High Density(1)
139 124 = /dev/fd?u1600 3.5" 1600K High Density(1)
140 44 = /dev/fd?u1680 3.5" 1680K High Density(3)
141 60 = /dev/fd?u1722 3.5" 1722K High Density
142 76 = /dev/fd?u1743 3.5" 1743K High Density
143 96 = /dev/fd?u1760 3.5" 1760K High Density
144 116 = /dev/fd?u1840 3.5" 1840K High Density(3)
145 100 = /dev/fd?u1920 3.5" 1920K High Density(1)
146 32 = /dev/fd?u2880 3.5" 2880K Extra Density(1)
147 104 = /dev/fd?u3200 3.5" 3200K Extra Density
148 108 = /dev/fd?u3520 3.5" 3520K Extra Density
149 112 = /dev/fd?u3840 3.5" 3840K Extra Density(1)
151 36 = /dev/fd?CompaQ Compaq 2880K drive; obsolete?
153 (1) Autodetectable format
154 (2) Autodetectable format in a Double Density (720K) drive only
155 (3) Autodetectable format in a High Density (1440K) drive only
157 NOTE: The letter in the device name (d, q, h or u)
158 signifies the type of drive: 5.25" Double Density (d),
159 5.25" Quad Density (q), 5.25" High Density (h) or 3.5"
160 (any model, u). The use of the capital letters D, H
161 and E for the 3.5" models have been deprecated, since
162 the drive type is insignificant for these devices.
164 3 char Pseudo-TTY slaves
165 0 = /dev/ttyp0 First PTY slave
166 1 = /dev/ttyp1 Second PTY slave
167 ...
168 255 = /dev/ttyef 256th PTY slave
170 These are the old-style (BSD) PTY devices; Unix98
171 devices are on major 136 and above.
173 block First MFM, RLL and IDE hard disk/CD-ROM interface
174 0 = /dev/hda Master: whole disk (or CD-ROM)
175 64 = /dev/hdb Slave: whole disk (or CD-ROM)
177 For partitions, add to the whole disk device number:
178 0 = /dev/hd? Whole disk
179 1 = /dev/hd?1 First partition
180 2 = /dev/hd?2 Second partition
181 ...
182 63 = /dev/hd?63 63rd partition
184 For Linux/i386, partitions 1-4 are the primary
185 partitions, and 5 and above are logical partitions.
186 Other versions of Linux use partitioning schemes
187 appropriate to their respective architectures.
189 4 char TTY devices
190 0 = /dev/tty0 Current virtual console
192 1 = /dev/tty1 First virtual console
193 ...
194 63 = /dev/tty63 63rd virtual console
195 64 = /dev/ttyS0 First UART serial port
196 ...
197 255 = /dev/ttyS191 192nd UART serial port
199 Older versions of the Linux kernel used this major
200 number for BSD PTY devices. As of Linux 2.1.115, this
201 is no longer supported. Use major numbers 2 and 3.
203 5 char Alternate TTY devices
204 0 = /dev/tty Current TTY device
205 1 = /dev/console System console
206 2 = /dev/ptmx PTY master multiplex
207 64 = /dev/cua0 Callout device for ttyS0
208 ...
209 255 = /dev/cua191 Callout device for ttyS191
211 (5,1) is /dev/console starting with Linux 2.1.71. See
212 the section on terminal devices for more information
213 on /dev/console.
215 6 char Parallel printer devices
216 0 = /dev/lp0 Parallel printer on parport0
217 1 = /dev/lp1 Parallel printer on parport1
218 ...
220 Current Linux kernels no longer have a fixed mapping
221 between parallel ports and I/O addresses. Instead,
222 they are redirected through the parport multiplex layer.
224 7 char Virtual console capture devices
225 0 = /dev/vcs Current vc text contents
226 1 = /dev/vcs1 tty1 text contents
227 ...
228 63 = /dev/vcs63 tty63 text contents
229 128 = /dev/vcsa Current vc text/attribute contents
230 129 = /dev/vcsa1 tty1 text/attribute contents
231 ...
232 191 = /dev/vcsa63 tty63 text/attribute contents
234 NOTE: These devices permit both read and write access.
236 block Loopback devices
237 0 = /dev/loop0 First loopback device
238 1 = /dev/loop1 Second loopback device
239 ...
241 The loopback devices are used to mount filesystems not
242 associated with block devices. The binding to the
243 loopback devices is handled by mount(8) or losetup(8).
245 8 block SCSI disk devices (0-15)
246 0 = /dev/sda First SCSI disk whole disk
247 16 = /dev/sdb Second SCSI disk whole disk
248 32 = /dev/sdc Third SCSI disk whole disk
249 ...
250 240 = /dev/sdp Sixteenth SCSI disk whole disk
252 Partitions are handled in the same way as for IDE
253 disks (see major number 3) except that the limit on
254 partitions is 15.
256 9 char SCSI tape devices
257 0 = /dev/st0 First SCSI tape, mode 0
258 1 = /dev/st1 Second SCSI tape, mode 0
259 ...
260 32 = /dev/st0l First SCSI tape, mode 1
261 33 = /dev/st1l Second SCSI tape, mode 1
262 ...
263 64 = /dev/st0m First SCSI tape, mode 2
264 65 = /dev/st1m Second SCSI tape, mode 2
265 ...
266 96 = /dev/st0a First SCSI tape, mode 3
267 97 = /dev/st1a Second SCSI tape, mode 3
268 ...
269 128 = /dev/nst0 First SCSI tape, mode 0, no rewind
270 129 = /dev/nst1 Second SCSI tape, mode 0, no rewind
271 ...
272 160 = /dev/nst0l First SCSI tape, mode 1, no rewind
273 161 = /dev/nst1l Second SCSI tape, mode 1, no rewind
274 ...
275 192 = /dev/nst0m First SCSI tape, mode 2, no rewind
276 193 = /dev/nst1m Second SCSI tape, mode 2, no rewind
277 ...
278 224 = /dev/nst0a First SCSI tape, mode 3, no rewind
279 225 = /dev/nst1a Second SCSI tape, mode 3, no rewind
280 ...
282 "No rewind" refers to the omission of the default
283 automatic rewind on device close. The MTREW or MTOFFL
284 ioctl()'s can be used to rewind the tape regardless of
285 the device used to access it.
287 block Metadisk (RAID) devices
288 0 = /dev/md0 First metadisk group
289 1 = /dev/md1 Second metadisk group
290 ...
292 The metadisk driver is used to span a
293 filesystem across multiple physical disks.
295 10 char Non-serial mice, misc features
296 0 = /dev/logibm Logitech bus mouse
297 1 = /dev/psaux PS/2-style mouse port
298 2 = /dev/inportbm Microsoft Inport bus mouse
299 3 = /dev/atibm ATI XL bus mouse
300 4 = /dev/jbm J-mouse
301 4 = /dev/amigamouse Amiga mouse (68k/Amiga)
302 5 = /dev/atarimouse Atari mouse
303 6 = /dev/sunmouse Sun mouse
304 7 = /dev/amigamouse1 Second Amiga mouse
305 8 = /dev/smouse Simple serial mouse driver
306 9 = /dev/pc110pad IBM PC-110 digitizer pad
307 128 = /dev/beep Fancy beep device
308 129 = /dev/modreq Kernel module load request
309 130 = /dev/watchdog Watchdog timer port
310 131 = /dev/temperature Machine internal temperature
311 132 = /dev/hwtrap Hardware fault trap
312 133 = /dev/exttrp External device trap
313 134 = /dev/apm_bios Advanced Power Management BIOS
314 135 = /dev/rtc Real Time Clock
315 139 = /dev/openprom SPARC OpenBoot PROM
316 140 = /dev/relay8 Berkshire Products Octal relay card
317 141 = /dev/relay16 Berkshire Products ISO-16 relay card
318 142 = /dev/msr x86 model-specific registers
319 143 = /dev/pciconf PCI configuration space
320 144 = /dev/nvram Non-volatile configuration RAM
321 145 = /dev/hfmodem Soundcard shortwave modem control
322 146 = /dev/graphics Linux/SGI graphics device
323 147 = /dev/opengl Linux/SGI OpenGL pipe
324 148 = /dev/gfx Linux/SGI graphics effects device
325 149 = /dev/input/mouse Linux/SGI Irix emulation mouse
326 150 = /dev/input/keyboard Linux/SGI Irix emulation keyboard
327 151 = /dev/led Front panel LEDs
328 153 = /dev/mergemem Memory merge device
329 154 = /dev/pmu Macintosh PowerBook power manager
330 155 = /dev/isictl MultiTech ISICom serial control
331 156 = /dev/lcd Front panel LCD display
332 157 = /dev/ac Applicom Intl Profibus card
333 158 = /dev/nwbutton Netwinder external button
334 159 = /dev/nwdebug Netwinder debug interface
335 160 = /dev/nwflash Netwinder flash memory
336 161 = /dev/userdma User-space DMA access
337 162 = /dev/smbus System Management Bus
338 163 = /dev/lik Logitech Internet Keyboard
339 164 = /dev/ipmo Intel Intelligent Platform Management
340 165 = /dev/vmmon VMWare virtual machine monitor
341 166 = /dev/i2o/ctl I2O configuration manager
342 167 = /dev/specialix_sxctl Specialix serial control
343 168 = /dev/tcldrv Technology Concepts serial control
344 169 = /dev/specialix_rioctl Specialix RIO serial control
345 170 = /dev/smapi IBM Thinkpad SMAPI
346 171 = /dev/srripc QNX4 API IPC manager
347 172 = /dev/usemaclone Semaphore clone device
348 173 = /dev/ipmikcs Intelligent Platform Management
349 174 = /dev/uctrl SPARCbook 3 microcontroller
350 175 = /dev/agpgart AGP Graphics Address Remapping Table
351 176 = /dev/gtrsc Gorgy Timing radio clock
352 177 = /dev/cbm Serial CBM bus
353 178 = /dev/jsflash JavaStation OS flash SIMM
354 179 = /dev/xsvc High-speed shared-mem/semaphore service
355 240-255 Reserved for local use
357 11 char Raw keyboard device
358 0 = /dev/kbd Raw keyboard device
360 The raw keyboard device is used on Linux/SPARC only.
362 block SCSI CD-ROM devices
363 0 = /dev/sr0 First SCSI CD-ROM
364 1 = /dev/sr1 Second SCSI CD-ROM
365 ...
367 The prefix /dev/scd instead of /dev/sr has been used
368 as well, and might make more sense.
370 12 char QIC-02 tape
371 2 = /dev/ntpqic11 QIC-11, no rewind-on-close
372 3 = /dev/tpqic11 QIC-11, rewind-on-close
373 4 = /dev/ntpqic24 QIC-24, no rewind-on-close
374 5 = /dev/tpqic24 QIC-24, rewind-on-close
375 6 = /dev/ntpqic120 QIC-120, no rewind-on-close
376 7 = /dev/tpqic120 QIC-120, rewind-on-close
377 8 = /dev/ntpqic150 QIC-150, no rewind-on-close
378 9 = /dev/tpqic150 QIC-150, rewind-on-close
380 The device names specified are proposed -- if there
381 are "standard" names for these devices, please let me know.
383 block MSCDEX CD-ROM callback support
384 0 = /dev/dos_cd0 First MSCDEX CD-ROM
385 1 = /dev/dos_cd1 Second MSCDEX CD-ROM
386 ...
388 13 char PC speaker (OBSOLETE)
389 0 = /dev/pcmixer Emulates /dev/mixer
390 1 = /dev/pcsp Emulates /dev/dsp (8-bit)
391 4 = /dev/pcaudio Emulates /dev/audio
392 5 = /dev/pcsp16 Emulates /dev/dsp (16-bit)
394 The current PC speaker driver uses the Open Sound
395 System interface, and these devices are obsolete.
397 block 8-bit MFM/RLL/IDE controller
398 0 = /dev/xda First XT disk whole disk
399 64 = /dev/xdb Second XT disk whole disk
401 Partitions are handled in the same way as IDE disks
402 (see major number 3).
404 14 char Open Sound System (OSS)
405 0 = /dev/mixer Mixer control
406 1 = /dev/sequencer Audio sequencer
407 2 = /dev/midi00 First MIDI port
408 3 = /dev/dsp Digital audio
409 4 = /dev/audio Sun-compatible digital audio
410 6 = /dev/sndstat Sound card status information
411 7 = /dev/audioctl SPARC audio control device
412 8 = /dev/sequencer2 Sequencer -- alternate device
413 16 = /dev/mixer1 Second soundcard mixer control
414 17 = /dev/patmgr0 Sequencer patch manager
415 18 = /dev/midi01 Second MIDI port
416 19 = /dev/dsp1 Second soundcard digital audio
417 20 = /dev/audio1 Second soundcard Sun digital audio
418 33 = /dev/patmgr1 Sequencer patch manager
419 34 = /dev/midi02 Third MIDI port
420 50 = /dev/midi03 Fourth MIDI port
421 block BIOS harddrive callback support
422 0 = /dev/dos_hda First BIOS harddrive whole disk
423 64 = /dev/dos_hdb Second BIOS harddrive whole disk
424 128 = /dev/dos_hdc Third BIOS harddrive whole disk
425 192 = /dev/dos_hdd Fourth BIOS harddrive whole disk
427 Partitions are handled in the same way as IDE disks
428 (see major number 3).
430 15 char Joystick
431 0 = /dev/js0 First analog joystick
432 1 = /dev/js1 Second analog joystick
433 ...
434 128 = /dev/djs0 First digital joystick
435 129 = /dev/djs1 Second digital joystick
436 ...
437 block Sony CDU-31A/CDU-33A CD-ROM
438 0 = /dev/sonycd Sony CDU-31a CD-ROM
440 16 char Non-SCSI scanners
441 0 = /dev/gs4500 Genius 4500 handheld scanner
442 block GoldStar CD-ROM
443 0 = /dev/gscd GoldStar CD-ROM
445 17 char Chase serial card
446 0 = /dev/ttyH0 First Chase port
447 1 = /dev/ttyH1 Second Chase port
448 ...
449 block Optics Storage CD-ROM
450 0 = /dev/optcd Optics Storage CD-ROM
452 18 char Chase serial card - alternate devices
453 0 = /dev/cuh0 Callout device for ttyH0
454 1 = /dev/cuh1 Callout device for ttyH1
455 ...
456 block Sanyo CD-ROM
457 0 = /dev/sjcd Sanyo CD-ROM
459 19 char Cyclades serial card
460 0 = /dev/ttyC0 First Cyclades port
461 ...
462 31 = /dev/ttyC31 32nd Cyclades port
463 block "Double" compressed disk
464 0 = /dev/double0 First compressed disk
465 ...
466 7 = /dev/double7 Eighth compressed disk
467 128 = /dev/cdouble0 Mirror of first compressed disk
468 ...
469 135 = /dev/cdouble7 Mirror of eighth compressed disk
471 See the Double documentation for the meaning of the
472 mirror devices.
474 20 char Cyclades serial card - alternate devices
475 0 = /dev/cub0 Callout device for ttyC0
476 ...
477 31 = /dev/cub31 Callout device for ttyC31
478 block Hitachi CD-ROM (under development)
479 0 = /dev/hitcd Hitachi CD-ROM
481 21 char Generic SCSI access
482 0 = /dev/sg0 First generic SCSI device
483 1 = /dev/sg1 Second generic SCSI device
484 ...
486 Most distributions name these /dev/sga, /dev/sgb...;
487 this sets an unnecessary limit of 26 SCSI devices in
488 the system and is counter to standard Linux
489 device-naming practice.
491 block Acorn MFM hard drive interface
492 0 = /dev/mfma First MFM drive whole disk
493 64 = /dev/mfmb Second MFM drive whole disk
495 This device is used on the ARM-based Acorn RiscPC.
496 Partitions are handled the same way as for IDE disks
497 (see major number 3).
499 22 char Digiboard serial card
500 0 = /dev/ttyD0 First Digiboard port
501 1 = /dev/ttyD1 Second Digiboard port
502 ...
503 block Second IDE hard disk/CD-ROM interface
504 0 = /dev/hdc Master: whole disk (or CD-ROM)
505 64 = /dev/hdd Slave: whole disk (or CD-ROM)
507 Partitions are handled the same way as for the first
508 interface (see major number 3).
510 23 char Digiboard serial card - alternate devices
511 0 = /dev/cud0 Callout device for ttyD0
512 1 = /dev/cud1 Callout device for ttyD1
513 ...
514 block Mitsumi proprietary CD-ROM
515 0 = /dev/mcd Mitsumi CD-ROM
517 24 char Stallion serial card
518 0 = /dev/ttyE0 Stallion port 0 card 0
519 1 = /dev/ttyE1 Stallion port 1 card 0
520 ...
521 64 = /dev/ttyE64 Stallion port 0 card 1
522 65 = /dev/ttyE65 Stallion port 1 card 1
523 ...
524 128 = /dev/ttyE128 Stallion port 0 card 2
525 129 = /dev/ttyE129 Stallion port 1 card 2
526 ...
527 192 = /dev/ttyE192 Stallion port 0 card 3
528 193 = /dev/ttyE193 Stallion port 1 card 3
529 ...
530 block Sony CDU-535 CD-ROM
531 0 = /dev/cdu535 Sony CDU-535 CD-ROM
533 25 char Stallion serial card - alternate devices
534 0 = /dev/cue0 Callout device for ttyE0
535 1 = /dev/cue1 Callout device for ttyE1
536 ...
537 64 = /dev/cue64 Callout device for ttyE64
538 65 = /dev/cue65 Callout device for ttyE65
539 ...
540 128 = /dev/cue128 Callout device for ttyE128
541 129 = /dev/cue129 Callout device for ttyE129
542 ...
543 192 = /dev/cue192 Callout device for ttyE192
544 193 = /dev/cue193 Callout device for ttyE193
545 ...
546 block First Matsushita (Panasonic/SoundBlaster) CD-ROM
547 0 = /dev/sbpcd0 Panasonic CD-ROM controller 0 unit 0
548 1 = /dev/sbpcd1 Panasonic CD-ROM controller 0 unit 1
549 2 = /dev/sbpcd2 Panasonic CD-ROM controller 0 unit 2
550 3 = /dev/sbpcd3 Panasonic CD-ROM controller 0 unit 3
552 26 char Quanta WinVision frame grabber
553 0 = /dev/wvisfgrab Quanta WinVision frame grabber
554 block Second Matsushita (Panasonic/SoundBlaster) CD-ROM
555 0 = /dev/sbpcd4 Panasonic CD-ROM controller 1 unit 0
556 1 = /dev/sbpcd5 Panasonic CD-ROM controller 1 unit 1
557 2 = /dev/sbpcd6 Panasonic CD-ROM controller 1 unit 2
558 3 = /dev/sbpcd7 Panasonic CD-ROM controller 1 unit 3
560 27 char QIC-117 tape
561 0 = /dev/qft0 Unit 0, rewind-on-close
562 1 = /dev/qft1 Unit 1, rewind-on-close
563 2 = /dev/qft2 Unit 2, rewind-on-close
564 3 = /dev/qft3 Unit 3, rewind-on-close
565 4 = /dev/nqft0 Unit 0, no rewind-on-close
566 5 = /dev/nqft1 Unit 1, no rewind-on-close
567 6 = /dev/nqft2 Unit 2, no rewind-on-close
568 7 = /dev/nqft3 Unit 3, no rewind-on-close
569 16 = /dev/zqft0 Unit 0, rewind-on-close, compression
570 17 = /dev/zqft1 Unit 1, rewind-on-close, compression
571 18 = /dev/zqft2 Unit 2, rewind-on-close, compression
572 19 = /dev/zqtf3 Unit 3, rewind-on-close, compression
573 20 = /dev/nzqft0 Unit 0, no rewind-on-close, compression
574 21 = /dev/nzqft1 Unit 1, no rewind-on-close, compression
575 22 = /dev/nzqft2 Unit 2, no rewind-on-close, compression
576 23 = /dev/nzqft3 Unit 3, no rewind-on-close, compression
577 32 = /dev/rawqft0 Unit 0, rewind-on-close, no file marks
578 33 = /dev/rawqft1 Unit 1, rewind-on-close, no file marks
579 34 = /dev/rawqft2 Unit 2, rewind-on-close, no file marks
580 35 = /dev/rawqft3 Unit 3, rewind-on-close, no file marks
581 36 = /dev/nrawqft0 Unit 0, no rewind-on-close, no file marks
582 37 = /dev/nrawqft1 Unit 1, no rewind-on-close, no file marks
583 38 = /dev/nrawqft2 Unit 2, no rewind-on-close, no file marks
584 39 = /dev/nrawqft3 Unit 3, no rewind-on-close, no file marks
585 block Third Matsushita (Panasonic/SoundBlaster) CD-ROM
586 0 = /dev/sbpcd8 Panasonic CD-ROM controller 2 unit 0
587 1 = /dev/sbpcd9 Panasonic CD-ROM controller 2 unit 1
588 2 = /dev/sbpcd10 Panasonic CD-ROM controller 2 unit 2
589 3 = /dev/sbpcd11 Panasonic CD-ROM controller 2 unit 3
591 28 char Stallion serial card - card programming
592 0 = /dev/staliomem0 First Stallion card I/O memory
593 1 = /dev/staliomem1 Second Stallion card I/O memory
594 2 = /dev/staliomem2 Third Stallion card I/O memory
595 3 = /dev/staliomem3 Fourth Stallion card I/O memory
596 char Atari SLM ACSI laser printer (68k/Atari)
597 0 = /dev/slm0 First SLM laser printer
598 1 = /dev/slm1 Second SLM laser printer
599 ...
600 block Fourth Matsushita (Panasonic/SoundBlaster) CD-ROM
601 0 = /dev/sbpcd12 Panasonic CD-ROM controller 3 unit 0
602 1 = /dev/sbpcd13 Panasonic CD-ROM controller 3 unit 1
603 2 = /dev/sbpcd14 Panasonic CD-ROM controller 3 unit 2
604 3 = /dev/sbpcd15 Panasonic CD-ROM controller 3 unit 3
605 block ACSI disk (68k/Atari)
606 0 = /dev/ada First ACSI disk whole disk
607 16 = /dev/adb Second ACSI disk whole disk
608 32 = /dev/adc Third ACSI disk whole disk
609 ...
610 240 = /dev/adp 16th ACSI disk whole disk
612 Partitions are handled in the same way as for IDE
613 disks (see major number 3) except that the limit on
614 partitions is 15, like SCSI.
616 29 char Universal frame buffers
617 0 = /dev/fb0 First frame buffer
618 1 = /dev/fb1 Second frame buffer
619 2 = /dev/fb2 Third frame buffer
620 ...
621 31 = /dev/fb31 32nd frame buffer
623 All additional minor numbers are reserved.
625 block Aztech/Orchid/Okano/Wearnes CD-ROM
626 0 = /dev/aztcd Aztech CD-ROM
628 30 char iBCS-2 compatibility devices
629 0 = /dev/socksys Socket access
630 1 = /dev/spx SVR3 local X interface
631 2 = /dev/inet/arp Network access
632 2 = /dev/inet/icmp Network access
633 2 = /dev/inet/ip Network access
634 2 = /dev/inet/udp Network access
635 2 = /dev/inet/tcp Network access
637 Additionally, iBCS-2 requires /dev/nfsd to be a link
638 to /dev/socksys, and /dev/X0R to be a link to
639 /dev/null.
641 block Philips LMS CM-205 CD-ROM
642 0 = /dev/cm205cd Philips LMS CM-205 CD-ROM
644 /dev/lmscd is an older name for this device. This
645 driver does not work with the CM-205MS CD-ROM.
647 31 char MPU-401 MIDI
648 0 = /dev/mpu401data MPU-401 data port
649 1 = /dev/mpu401stat MPU-401 status port
650 block ROM/flash memory card
651 0 = /dev/rom0 First ROM card (rw)
652 ...
653 7 = /dev/rom7 Eighth ROM card (rw)
654 8 = /dev/rrom0 First ROM card (ro)
655 ...
656 15 = /dev/rrom7 Eighth ROM card (ro)
657 16 = /dev/flash0 First flash memory card (rw)
658 ...
659 23 = /dev/flash7 Eighth flash memory card (rw)
660 24 = /dev/rflash0 First flash memory card (ro)
661 ...
662 31 = /dev/rflash7 Eighth flash memory card (ro)
664 The read-write (rw) devices support back-caching
665 written data in RAM, as well as writing to flash RAM
666 devices. The read-only devices (ro) support reading
667 only.
669 32 char Specialix serial card
670 0 = /dev/ttyX0 First Specialix port
671 1 = /dev/ttyX1 Second Specialix port
672 ...
673 block Philips LMS CM-206 CD-ROM
674 0 = /dev/cm206cd Philips LMS CM-206 CD-ROM
676 33 char Specialix serial card - alternate devices
677 0 = /dev/cux0 Callout device for ttyX0
678 1 = /dev/cux1 Callout device for ttyX1
679 ...
680 block Third IDE hard disk/CD-ROM interface
681 0 = /dev/hde Master: whole disk (or CD-ROM)
682 64 = /dev/hdf Slave: whole disk (or CD-ROM)
684 Partitions are handled the same way as for the first
685 interface (see major number 3).
687 34 char Z8530 HDLC driver
688 0 = /dev/scc0 First Z8530, first port
689 1 = /dev/scc1 First Z8530, second port
690 2 = /dev/scc2 Second Z8530, first port
691 3 = /dev/scc3 Second Z8530, second port
692 ...
694 In a previous version these devices were named
695 /dev/sc1 for /dev/scc0, /dev/sc2 for /dev/scc1, and so
696 on.
698 block Fourth IDE hard disk/CD-ROM interface
699 0 = /dev/hdg Master: whole disk (or CD-ROM)
700 64 = /dev/hdh Slave: whole disk (or CD-ROM)
702 Partitions are handled the same way as for the first
703 interface (see major number 3).
705 35 char tclmidi MIDI driver
706 0 = /dev/midi0 First MIDI port, kernel timed
707 1 = /dev/midi1 Second MIDI port, kernel timed
708 2 = /dev/midi2 Third MIDI port, kernel timed
709 3 = /dev/midi3 Fourth MIDI port, kernel timed
710 64 = /dev/rmidi0 First MIDI port, untimed
711 65 = /dev/rmidi1 Second MIDI port, untimed
712 66 = /dev/rmidi2 Third MIDI port, untimed
713 67 = /dev/rmidi3 Fourth MIDI port, untimed
714 128 = /dev/smpte0 First MIDI port, SMPTE timed
715 129 = /dev/smpte1 Second MIDI port, SMPTE timed
716 130 = /dev/smpte2 Third MIDI port, SMPTE timed
717 131 = /dev/smpte3 Fourth MIDI port, SMPTE timed
718 block Slow memory ramdisk
719 0 = /dev/slram Slow memory ramdisk
721 36 char Netlink support
722 0 = /dev/route Routing, device updates, kernel to user
723 1 = /dev/skip enSKIP security cache control
724 3 = /dec/fwmonitor Firewall packet copies
725 16 = /dev/tap0 First Ethertap device
726 ...
727 31 = /dev/tap15 16th Ethertap device
728 block MCA ESDI hard disk
729 0 = /dev/eda First ESDI disk whole disk
730 64 = /dev/edb Second ESDI disk whole disk
731 ...
733 Partitions are handled in the same way as IDE disks
734 (see major number 3).
736 37 char IDE tape
737 0 = /dev/ht0 First IDE tape
738 1 = /dev/ht1 Second IDE tape
739 ...
740 128 = /dev/nht0 First IDE tape, no rewind-on-close
741 129 = /dev/nht1 Second IDE tape, no rewind-on-close
742 ...
744 Currently, only one IDE tape drive is supported.
746 block Zorro II ramdisk
747 0 = /dev/z2ram Zorro II ramdisk
749 38 char Myricom PCI Myrinet board
750 0 = /dev/mlanai0 First Myrinet board
751 1 = /dev/mlanai1 Second Myrinet board
752 ...
754 This device is used for status query, board control
755 and "user level packet I/O." This board is also
756 accessible as a standard networking "eth" device.
758 block Reserved for Linux/AP+
760 39 char ML-16P experimental I/O board
761 0 = /dev/ml16pa-a0 First card, first analog channel
762 1 = /dev/ml16pa-a1 First card, second analog channel
763 ...
764 15 = /dev/ml16pa-a15 First card, 16th analog channel
765 16 = /dev/ml16pa-d First card, digital lines
766 17 = /dev/ml16pa-c0 First card, first counter/timer
767 18 = /dev/ml16pa-c1 First card, second counter/timer
768 19 = /dev/ml16pa-c2 First card, third counter/timer
769 32 = /dev/ml16pb-a0 Second card, first analog channel
770 33 = /dev/ml16pb-a1 Second card, second analog channel
771 ...
772 47 = /dev/ml16pb-a15 Second card, 16th analog channel
773 48 = /dev/ml16pb-d Second card, digital lines
774 49 = /dev/ml16pb-c0 Second card, first counter/timer
775 50 = /dev/ml16pb-c1 Second card, second counter/timer
776 51 = /dev/ml16pb-c2 Second card, third counter/timer
777 ...
778 block Reserved for Linux/AP+
780 40 char Matrox Meteor frame grabber
781 0 = /dev/mmetfgrab Matrox Meteor frame grabber
782 block Syquest EZ135 parallel port removable drive
783 0 = /dev/eza Parallel EZ135 drive, whole disk
785 This device is obsolete and will be removed in a
786 future version of Linux. It has been replaced with
787 the parallel port IDE disk driver at major number 45.
788 Partitions are handled in the same way as IDE disks
789 (see major number 3).
791 41 char Yet Another Micro Monitor
792 0 = /dev/yamm Yet Another Micro Monitor
793 block MicroSolutions BackPack parallel port CD-ROM
794 0 = /dev/bpcd BackPack CD-ROM
796 This device is obsolete and will be removed in a
797 future version of Linux. It has been replaced with
798 the parallel port ATAPI CD-ROM driver at major number 46.
800 42 Demo/sample use
802 This number is intended for use in sample code, as
803 well as a general "example" device number. It
804 should never be used for a device driver that is being
805 distributed; either obtain an official number or use
806 the local/experimental range. The sudden addition or
807 removal of a driver with this number should not cause
808 ill effects to the system (bugs excepted.)
810 IN PARTICULAR, ANY DISTRIBUTION WHICH CONTAINS A
811 DEVICE DRIVER USING MAJOR NUMBER 42 IS NONCOMPLIANT.
813 43 char isdn4linux virtual modem
814 0 = /dev/ttyI0 First virtual modem
815 ...
816 63 = /dev/ttyI63 64th virtual modem
817 block Network block devices
818 0 = /dev/nb0 First network block device
819 1 = /dev/nb1 Second network block device
820 ...
822 Network Block Device is somehow similar to loopback
823 devices: If you read from it, it sends packet accross
824 network asking server for data. If you write to it, it
825 sends packet telling server to write. It could be used
826 to mounting filesystems over the net, swapping over
827 the net, implementing block device in userland etc.
829 44 char isdn4linux virtual modem - alternate devices
830 0 = /dev/cui0 Callout device for ttyI0
831 ...
832 63 = /dev/cui63 Callout device for ttyI63
833 block Flash Translatio Layer (FTL) filesystems
834 0 = /dev/ftla FTL on first Memory Technology Device
835 16 = /dev/ftlb FTL on second Memory Technology Device
836 32 = /dev/ftlc FTL on third Memory Technology Device
837 ...
838 240 = /dev/ftlp FTL on 16th Memory Technology Device
840 Partitions are handled in the same way as for IDE
841 disks (see major number 3) expect that the partition
842 limit is 15 rather than 63 per disk (same as SCSI.)
844 45 char isdn4linux ISDN BRI driver
845 0 = /dev/isdn0 First virtual B channel raw data
846 ...
847 63 = /dev/isdn63 64th virtual B channel raw data
848 64 = /dev/isdnctrl0 First channel control/debug
849 ...
850 127 = /dev/isdnctrl63 64th channel control/debug
852 128 = /dev/ippp0 First SyncPPP device
853 ...
854 191 = /dev/ippp63 64th SyncPPP device
856 255 = /dev/isdninfo ISDN monitor interface
857 block Parallel port IDE disk devices
858 0 = /dev/pda First parallel port IDE disk
859 16 = /dev/pdb Second parallel port IDE disk
860 32 = /dev/pdc Third parallel port IDE disk
861 48 = /dev/pdd Fourth parallel port IDE disk
863 Partitions are handled in the same way as for IDE
864 disks (see major number 3) except that the partition
865 limit is 15 rather than 63 per disk.
867 46 char Comtrol Rocketport serial card
868 0 = /dev/ttyR0 First Rocketport port
869 1 = /dev/ttyR1 Second Rocketport port
870 ...
871 block Parallel port ATAPI CD-ROM devices
872 0 = /dev/pcd0 First parallel port ATAPI CD-ROM
873 1 = /dev/pcd1 Second parallel port ATAPI CD-ROM
874 2 = /dev/pcd2 Third parallel port ATAPI CD-ROM
875 3 = /dev/pcd3 Fourth parallel port ATAPI CD-ROM
877 47 char Comtrol Rocketport serial card - alternate devices
878 0 = /dev/cur0 Callout device for ttyR0
879 1 = /dev/cur1 Callout device for ttyR1
880 ...
881 block Parallel port ATAPI disk devices
882 0 = /dev/pf0 First parallel port ATAPI disk
883 1 = /dev/pf1 Second parallel port ATAPI disk
884 2 = /dev/pf2 Third parallel port ATAPI disk
885 3 = /dev/pf3 Fourth parallel port ATAPI disk
887 This driver is intended for floppy disks and similar
888 devices and hence does not support partitioning.
890 48 char SDL RISCom serial card
891 0 = /dev/ttyL0 First RISCom port
892 1 = /dev/ttyL1 Second RISCom port
893 ...
894 block Reserved for Mylex DAC960 PCI RAID controller
896 49 char SDL RISCom serial card - alternate devices
897 0 = /dev/cul0 Callout device for ttyL0
898 1 = /dev/cul1 Callout device for ttyL1
899 ...
900 block Reserved for Mylex DAC960 PCI RAID controller
902 50 char Reserved for GLINT
903 block Reserved for Mylex DAC960 PCI RAID controller
905 51 char Baycom radio modem
906 0 = /dev/bc0 First Baycom radio modem
907 1 = /dev/bc1 Second Baycom radio modem
908 ...
909 block Reserved for Mylex DAC960 PCI RAID controller
911 52 char Spellcaster DataComm/BRI ISDN card
912 0 = /dev/dcbri0 First DataComm card
913 1 = /dev/dcbri1 Second DataComm card
914 2 = /dev/dcbri2 Third DataComm card
915 3 = /dev/dcbri3 Fourth DataComm card
916 block Reserved for Mylex DAC960 PCI RAID controller
918 53 char BDM interface for remote debugging MC683xx microcontrollers
919 0 = /dev/pd_bdm0 PD BDM interface on lp0
920 1 = /dev/pd_bdm1 PD BDM interface on lp1
921 2 = /dev/pd_bdm2 PD BDM interface on lp2
922 4 = /dev/icd_bdm0 ICD BDM interface on lp0
923 5 = /dev/icd_bdm1 ICD BDM interface on lp1
924 6 = /dev/icd_bdm2 ICD BDM interface on lp2
926 This device is used for the interfacing to the MC683xx
927 microcontrollers via Background Debug Mode by use of a
928 Parallel Port interface. PD is the Motorola Public
929 Domain Interface and ICD is the commercial interface
930 by P&E.
932 block Reserved for Mylex DAC960 PCI RAID controller
934 54 char Electrocardiognosis Holter serial card
935 0 = /dev/holter0 First Holter port
936 1 = /dev/holter1 Second Holter port
937 2 = /dev/holter2 Third Holter port
939 A custom serial card used by Electrocardiognosis SRL
940 <mseritan@ottonel.pub.ro> to transfer data from Holter
941 24-hour heart monitoring equipment.
943 block Reserved for Mylex DAC960 PCI RAID controller
945 55 char DSP56001 digital signal processor
946 0 = /dev/dsp56k First DSP56001
947 block Reserved for Mylex DAC960 PCI RAID controller
949 56 char Apple Desktop Bus
950 0 = /dev/adb ADB bus control
952 Additional devices will be added to this number, all
953 starting with /dev/adb.
955 block Fifth IDE hard disk/CD-ROM interface
956 0 = /dev/hdi Master: whole disk (or CD-ROM)
957 64 = /dev/hdj Slave: whole disk (or CD-ROM)
959 Partitions are handled the same way as for the first
960 interface (see major number 3).
962 57 char Hayes ESP serial card
963 0 = /dev/ttyP0 First ESP port
964 1 = /dev/ttyP1 Second ESP port
965 ...
967 block Sixth IDE hard disk/CD-ROM interface
968 0 = /dev/hdk Master: whole disk (or CD-ROM)
969 64 = /dev/hdl Slave: whole disk (or CD-ROM)
971 Partitions are handled the same way as for the first
972 interface (see major number 3).
974 58 char Hayes ESP serial card - alternate devices
975 0 = /dev/cup0 Callout device for ttyP0
976 1 = /dev/cup1 Callout device for ttyP1
977 ...
978 block Reserved for logical volume manager
980 59 char sf firewall package
981 0 = /dev/firewall Communication with sf kernel module
983 block Generic PDA filesystem device
984 0 = /dev/pda0 First PDA device
985 1 = /dev/pda1 Second PDA device
986 ...
988 The pda devices are used to mount filesystems on
989 remote pda's (basically slow handheld machines with
990 proprietary OS's and limited memory and storage
991 running small fs translation drivers) through serial /
992 IRDA / parallel links.
994 60-63 LOCAL/EXPERIMENTAL USE
995 Allocated for local/experimental use. For devices not
996 assigned official numbers, these ranges should be
997 used, in order to avoid conflicting with future assignments.
999 64 char ENskip kernel encryption package
1000 0 = /dev/enskip Communication with ENskip kernel module
1002 65 char Sundance "plink" Transputer boards
1003 0 = /dev/plink0 First plink device
1004 1 = /dev/plink1 Second plink device
1005 2 = /dev/plink2 Third plink device
1006 3 = /dev/plink3 Fourth plink device
1007 64 = /dev/rplink0 First plink device, raw
1008 65 = /dev/rplink1 Second plink device, raw
1009 66 = /dev/rplink2 Third plink device, raw
1010 67 = /dev/rplink3 Fourth plink device, raw
1011 128 = /dev/plink0d First plink device, debug
1012 129 = /dev/plink1d Second plink device, debug
1013 130 = /dev/plink2d Third plink device, debug
1014 131 = /dev/plink3d Fourth plink device, debug
1015 192 = /dev/rplink0d First plink device, raw, debug
1016 193 = /dev/rplink1d Second plink device, raw, debug
1017 194 = /dev/rplink2d Third plink device, raw, debug
1018 195 = /dev/rplink3d Fourth plink device, raw, debug
1020 This is a commercial driver; contact James Howes
1021 <jth@prosig.demon.co.uk> for information.
1023 block SCSI disk devices (16-31)
1024 0 = /dev/sdq 16th SCSI disk whole disk
1025 16 = /dev/sdr 17th SCSI disk whole disk
1026 32 = /dev/sds 18th SCSI disk whole disk
1027 ...
1028 240 = /dev/sdaf 32nd SCSI disk whole disk
1030 Partitions are handled in the same way as for IDE
1031 disks (see major number 3) except that the limit on
1032 partitions is 15.
1034 66 char YARC PowerPC PCI coprocessor card
1035 0 = /dev/yppcpci0 First YARC card
1036 1 = /dev/yppcpci1 Second YARC card
1037 ...
1039 block SCSI disk devices (32-47)
1040 0 = /dev/sdag 33th SCSI disk whole disk
1041 16 = /dev/sdah 34th SCSI disk whole disk
1042 32 = /dev/sdai 35th SCSI disk whole disk
1043 ...
1044 240 = /dev/sdav 48nd SCSI disk whole disk
1046 Partitions are handled in the same way as for IDE
1047 disks (see major number 3) except that the limit on
1048 partitions is 15.
1050 67 char Coda network file system
1051 0 = /dev/cfs0 Coda cache manager
1053 See http://www.coda.cs.cmu.edu for information about Coda.
1055 block SCSI disk devices (48-63)
1056 0 = /dev/sdaw 49th SCSI disk whole disk
1057 16 = /dev/sdax 50th SCSI disk whole disk
1058 32 = /dev/sday 51st SCSI disk whole disk
1059 ...
1060 240 = /dev/sdbl 64th SCSI disk whole disk
1062 Partitions are handled in the same way as for IDE
1063 disks (see major number 3) except that the limit on
1064 partitions is 15.
1066 68 char CAPI 2.0 interface
1067 0 = /dev/capi20 Control device
1068 1 = /dev/capi20.00 First CAPI 2.0 application
1069 2 = /dev/capi20.01 Second CAPI 2.0 application
1070 ...
1071 20 = /dev/capi20.19 19th CAPI 2.0 application
1073 ISDN CAPI 2.0 driver for use with CAPI 2.0
1074 applications; currently supports the AVM B1 card.
1076 block SCSI disk devices (64-79)
1077 0 = /dev/sdbm 64th SCSI disk whole disk
1078 16 = /dev/sdbn 65th SCSI disk whole disk
1079 32 = /dev/sdbo 66th SCSI disk whole disk
1080 ...
1081 240 = /dev/sdcb 80th SCSI disk whole disk
1083 Partitions are handled in the same way as for IDE
1084 disks (see major number 3) except that the limit on
1085 partitions is 15.
1087 69 char MA16 numeric accelerator card
1088 0 = /dev/ma16 Board memory access
1090 block SCSI disk devices (80-95)
1091 0 = /dev/sdcc 81st SCSI disk whole disk
1092 16 = /dev/sdcd 82nd SCSI disk whole disk
1093 32 = /dev/sdce 83th SCSI disk whole disk
1094 ...
1095 240 = /dev/sdcr 96th SCSI disk whole disk
1097 Partitions are handled in the same way as for IDE
1098 disks (see major number 3) except that the limit on
1099 partitions is 15.
1101 70 char SpellCaster Protocol Services Interface
1102 0 = /dev/apscfg Configuration interface
1103 1 = /dev/apsauth Authentication interface
1104 2 = /dev/apslog Logging interface
1105 3 = /dev/apsdbg Debugging interface
1106 64 = /dev/apsisdn ISDN command interface
1107 65 = /dev/apsasync Async command interface
1108 128 = /dev/apsmon Monitor interface
1110 block SCSI disk devices (96-111)
1111 0 = /dev/sdcs 97th SCSI disk whole disk
1112 16 = /dev/sdct 98th SCSI disk whole disk
1113 32 = /dev/sdcu 99th SCSI disk whole disk
1114 ...
1115 240 = /dev/sddh 112nd SCSI disk whole disk
1117 Partitions are handled in the same way as for IDE
1118 disks (see major number 3) except that the limit on
1119 partitions is 15.
1121 71 char Computone IntelliPort II serial card
1122 0 = /dev/ttyF0 IntelliPort II board 0, port 0
1123 1 = /dev/ttyF1 IntelliPort II board 0, port 1
1124 ...
1125 63 = /dev/ttyF63 IntelliPort II board 0, port 63
1126 64 = /dev/ttyF64 IntelliPort II board 1, port 0
1127 65 = /dev/ttyF65 IntelliPort II board 1, port 1
1128 ...
1129 127 = /dev/ttyF127 IntelliPort II board 1, port 63
1130 128 = /dev/ttyF128 IntelliPort II board 2, port 0
1131 129 = /dev/ttyF129 IntelliPort II board 2, port 1
1132 ...
1133 191 = /dev/ttyF191 IntelliPort II board 2, port 63
1134 192 = /dev/ttyF192 IntelliPort II board 3, port 0
1135 193 = /dev/ttyF193 IntelliPort II board 3, port 1
1136 ...
1137 255 = /dev/ttyF255 IntelliPort II board 3, port 63
1139 block SCSI disk devices (112-127)
1140 0 = /dev/sddi 113th SCSI disk whole disk
1141 16 = /dev/sddj 114th SCSI disk whole disk
1142 32 = /dev/sddk 115th SCSI disk whole disk
1143 ...
1144 240 = /dev/sddx 128th SCSI disk whole disk
1146 Partitions are handled in the same way as for IDE
1147 disks (see major number 3) except that the limit on
1148 partitions is 15.
1150 72 char Computone IntelliPort II serial card - alternate devices
1151 0 = /dev/cuf0 Callout device for ttyF0
1152 1 = /dev/cuf1 Callout device for ttyF1
1153 ...
1154 63 = /dev/cuf63 Callout device for ttyF63
1155 64 = /dev/cuf64 Callout device for ttyF64
1156 65 = /dev/cuf65 Callout device for ttyF65
1157 ...
1158 127 = /dev/cuf127 Callout device for ttyF127
1159 128 = /dev/cuf128 Callout device for ttyF128
1160 129 = /dev/cuf129 Callout device for ttyF129
1161 ...
1162 191 = /dev/cuf191 Callout device for ttyF191
1163 192 = /dev/cuf192 Callout device for ttyF192
1164 193 = /dev/cuf193 Callout device for ttyF193
1165 ...
1166 255 = /dev/cuf255 Callout device for ttyF255
1168 73 char Computone IntelliPort II serial card - control devices
1169 0 = /dev/ip2ipl0 Loadware device for board 0
1170 1 = /dev/ip2stat0 Status device for board 0
1171 4 = /dev/ip2ipl1 Loadware device for board 1
1172 5 = /dev/ip2stat1 Status device for board 1
1173 8 = /dev/ip2ipl2 Loadware device for board 2
1174 9 = /dev/ip2stat2 Status device for board 2
1175 12 = /dev/ip2ipl3 Loadware device for board 3
1176 13 = /dev/ip2stat3 Status device for board 3
1178 74 char SCI bridge
1179 0 = /dev/SCI/0 SCI device 0
1180 1 = /dev/SCI/1 SCI device 1
1181 ...
1183 Currently for Dolphin Interconnect Solutions' PCI-SCI
1184 bridge.
1186 75 char Specialix IO8+ serial card
1187 0 = /dev/ttyW0 First IO8+ port, first card
1188 1 = /dev/ttyW1 Second IO8+ port, first card
1189 ...
1190 8 = /dev/ttyW8 First IO8+ port, second card
1191 ...
1193 76 char Specialix IO8+ serial card - alternate devices
1194 0 = /dev/cuw0 Callout device for ttyW0
1195 1 = /dev/cuw1 Callout device for ttyW1
1196 ...
1197 8 = /dev/cuw8 Callout device for ttyW8
1198 ...
1200 77 char ComScire Quantum Noise Generator
1201 0 = /dev/qng ComScire Quantum Noise Generator
1203 78 char PAM Software's multimodem boards
1204 0 = /dev/ttyM0 First PAM modem
1205 1 = /dev/ttyM1 Second PAM modem
1206 ...
1208 79 char PAM Software's multimodem boards - alternate devices
1209 0 = /dev/cum0 Callout device for ttyM0
1210 1 = /dev/cum1 Callout device for ttyM1
1211 ...
1213 80 char Photometrics AT200 CCD camera
1214 0 = /dev/at200 Photometrics AT200 CCD camera
1216 block I2O hard disk
1217 0 = /dev/i2o/hda First I2O hard disk, whole disk
1218 16 = /dev/i2o/hdb Second I2O hard disk, whole disk
1219 ...
1220 240 = /dev/i2o/hdp 16th I2O hard disk, whole disk
1222 Partitions are handled in the same way as for IDE
1223 disks (see major number 3) except that the limit on
1224 partitions is 15.
1226 81 char video4linux
1227 0 = /dev/video0 Video capture/overlay device
1228 ...
1229 63 = /dev/video63 Video capture/overlay device
1230 64 = /dev/radio0 Radio device
1231 ...
1232 127 = /dev/radio63 Radio device
1233 192 = /dev/vtx0 Teletext device
1234 ...
1235 223 = /dev/vtx31 Teletext device
1236 224 = /dev/vbi0 Vertical blank interrupt
1237 ...
1238 255 = /dev/vbi31 Vertical blank interrupt
1240 block I2O hard disk
1241 0 = /dev/i2o/hdq 17th I2O hard disk, whole disk
1242 16 = /dev/i2o/hdr 18th I2O hard disk, whole disk
1243 ...
1244 240 = /dev/i2o/hdaf 32nd I2O hard disk, whole disk
1246 Partitions are handled in the same way as for IDE
1247 disks (see major number 3) except that the limit on
1248 partitions is 15.
1250 82 char WiNRADiO communications receiver card
1251 0 = /dev/winradio0 First WiNRADiO card
1252 1 = /dev/winradio1 Second WiNRADiO card
1253 ...
1255 The driver and documentation may be obtained from
1256 http://www.proximity.com.au/~brian/winradio/
1258 block I2O hard disk
1259 0 = /dev/i2o/hdag 33rd I2O hard disk, whole disk
1260 16 = /dev/i2o/hdah 34th I2O hard disk, whole disk
1261 ...
1262 240 = /dev/i2o/hdav 48th I2O hard disk, whole disk
1264 Partitions are handled in the same way as for IDE
1265 disks (see major number 3) except that the limit on
1266 partitions is 15.
1268 83 char Teletext/videotext interfaces
1269 0 = /dev/vtx Teletext decoder
1270 16 = /dev/vttuner TV tuner on teletext interface
1272 Devices for the driver contained in the VideoteXt package.
1273 More information on http://home.pages.de/~videotext/
1275 block I2O hard disk
1276 0 = /dev/i2o/hdaw 49th I2O hard disk, whole disk
1277 16 = /dev/i2o/hdax 50th I2O hard disk, whole disk
1278 ...
1279 240 = /dev/i2o/hdbl 64th I2O hard disk, whole disk
1281 Partitions are handled in the same way as for IDE
1282 disks (see major number 3) except that the limit on
1283 partitions is 15.
1285 84 char Ikon 1011[57] Versatec Greensheet Interface
1286 0 = /dev/ihcp0 First Greensheet port
1287 1 = /dev/ihcp1 Second Greensheet port
1289 block I2O hard disk
1290 0 = /dev/i2o/hdbm 65th I2O hard disk, whole disk
1291 16 = /dev/i2o/hdbn 66th I2O hard disk, whole disk
1292 ...
1293 240 = /dev/i2o/hdcb 80th I2O hard disk, whole disk
1295 Partitions are handled in the same way as for IDE
1296 disks (see major number 3) except that the limit on
1297 partitions is 15.
1299 85 char Linux/SGI shared memory input queue
1300 0 = /dev/shmiq Master shared input queue
1301 1 = /dev/qcntl0 First device pushed
1302 2 = /dev/qcntl1 Second device pushed
1303 ...
1305 block I2O hard disk
1306 0 = /dev/i2o/hdcc 81st I2O hard disk, whole disk
1307 16 = /dev/i2o/hdcd 82nd I2O hard disk, whole disk
1308 ...
1309 240 = /dev/i2o/hdcr 96th I2O hard disk, whole disk
1311 Partitions are handled in the same way as for IDE
1312 disks (see major number 3) except that the limit on
1313 partitions is 15.
1315 86 char SCSI media changer
1316 0 = /dev/sch0 First SCSI media changer
1317 1 = /dev/sch1 Second SCSI media changer
1318 ...
1320 block I2O hard disk
1321 0 = /dev/i2o/hdcs 97th I2O hard disk, whole disk
1322 16 = /dev/i2o/hdct 98th I2O hard disk, whole disk
1323 ...
1324 240 = /dev/i2o/hddh 112th I2O hard disk, whole disk
1326 Partitions are handled in the same way as for IDE
1327 disks (see major number 3) except that the limit on
1328 partitions is 15.
1330 87 char Sony Control-A1 stereo control bus
1331 0 = /dev/controla0 First device on chain
1332 1 = /dev/controla1 Second device on chain
1333 ...
1335 block I2O hard disk
1336 0 = /dev/i2o/hddi 113rd I2O hard disk, whole disk
1337 16 = /dev/i2o/hddj 114th I2O hard disk, whole disk
1338 ...
1339 240 = /dev/i2o/hddx 128th I2O hard disk, whole disk
1341 Partitions are handled in the same way as for IDE
1342 disks (see major number 3) except that the limit on
1343 partitions is 15.
1345 88 char COMX synchronous serial card
1346 0 = /dev/comx0 COMX channel 0
1347 1 = /dev/comx1 COMX channel 1
1348 ...
1350 block Seventh IDE hard disk/CD-ROM interface
1351 0 = /dev/hdm Master: whole disk (or CD-ROM)
1352 64 = /dev/hdn Slave: whole disk (or CD-ROM)
1354 Partitions are handled the same way as for the first
1355 interface (see major number 3).
1358 89 char I2C bus interface
1359 0 = /dev/i2c0 First I2C adapter
1360 1 = /dev/i2c1 Second I2C adapter
1361 ...
1363 block Eighth IDE hard disk/CD-ROM interface
1364 0 = /dev/hdo Master: whole disk (or CD-ROM)
1365 64 = /dev/hdp Slave: whole disk (or CD-ROM)
1367 Partitions are handled the same way as for the first
1368 interface (see major number 3).
1370 90 char Memory Technology Device (RAM, ROM, Flash)
1371 0 = /dev/mtd0 First MTD (rw)
1372 1 = /dev/mtdr0 First MTD (ro)
1373 ...
1374 30 = /dev/mtd15 16th MTD (rw)
1375 31 = /dev/mtdr15 16th MTD (ro)
1377 block Ninth IDE hard disk/CD-ROM interface
1378 0 = /dev/hdq Master: whole disk (or CD-ROM)
1379 64 = /dev/hdr Slave: whole disk (or CD-ROM)
1381 Partitions are handled the same way as for the first
1382 interface (see major number 3).
1384 91 char CAN-Bus devices
1385 0 = /dev/can0 First CAN-Bus controller
1386 1 = /dev/can1 Second CAN-Bus controller
1387 ...
1389 block Tenth IDE hard disk/CD-ROM interface
1390 0 = /dev/hds Master: whole disk (or CD-ROM)
1391 64 = /dev/hdt Slave: whole disk (or CD-ROM)
1393 Partitions are handled the same way as for the first
1394 interface (see major number 3).
1396 92 char Reserved for ith Kommunikationstechnik MIC ISDN card
1398 block PPDD encrypted disk driver
1399 0 = /dev/ppdd0 First encrypted disk
1400 1 = /dev/ppdd1 Second encrypted disk
1401 ...
1403 Partitions are handled in the same way as for IDE
1404 disks (see major number 3) except that the limit on
1405 partitions is 15.
1407 93 char IBM Smart Capture Card frame grabber
1408 0 = /dev/iscc0 First Smart Capture Card
1409 1 = /dev/iscc1 Second Smart Capture Card
1410 ...
1411 128 = /dev/isccctl0 First Smart Capture Card control
1412 129 = /dev/isccctl1 Second Smart Capture Card control
1413 ...
1415 block NAND Flash Translation Layer filesystem
1416 0 = /dev/nftla First NFTL layer
1417 16 = /dev/nftlb Second NFTL layer
1418 ...
1419 240 = /dev/nftlp 16th NTFL layer
1421 94 char miroVIDEO DC10/30 capture/playback device
1422 0 = /dev/dcxx0 First capture card
1423 1 = /dev/dcxx1 Second capture card
1424 ...
1426 95 char IP filter
1427 0 = /dev/ipl Filter control device/log file
1428 1 = /dev/ipnat NAT control device/log file
1429 2 = /dev/ipstate State information log file
1430 3 = /dev/ipauth Authentication control device/log file
1432 block IBM S/390 DASD block storage
1433 0 = /dev/dasd0 First DASD device, major
1434 1 = /dev/dasd0a First DASD device, block 1
1435 2 = /dev/dasd0b First DASD device, block 2
1436 3 = /dev/dasd0c First DASD device, block 3
1437 4 = /dev/dasd1 Second DASD device, major
1438 5 = /dev/dasd1a Second DASD device, block 1
1439 6 = /dev/dasd1b Second DASD device, block 2
1440 7 = /dev/dasd1c Second DASD device, block 3
1441 ...
1443 96 char Parallel port ATAPI tape devices
1444 0 = /dev/pt0 First parallel port ATAPI tape
1445 1 = /dev/pt1 Second parallel port ATAPI tape
1446 ...
1447 128 = /dev/npt0 First p.p. ATAPI tape, no rewind
1448 129 = /dev/npt1 Second p.p. ATAPI tape, no rewind
1449 ...
1451 block IBM S/390 VM/ESA minidisk
1452 0 = /dev/msd0 First VM/ESA minidisk
1453 1 = /dev/msd1 Second VM/ESA minidisk
1454 ...
1456 97 char Parallel port generic ATAPI interface
1457 0 = /dev/pg0 First parallel port ATAPI device
1458 1 = /dev/pg1 Second parallel port ATAPI device
1459 2 = /dev/pg2 Third parallel port ATAPI device
1460 3 = /dev/pg3 Fourth parallel port ATAPI device
1462 These devices support the same API as the generic SCSI
1463 devices.
1465 98 char Control and Measurement Device (comedi)
1466 0 = /dev/comedi0 First comedi device
1467 1 = /dev/comedi1 Second comedi device
1468 ...
1470 See http://stm.lbl.gov/comedi or http://www.llp.fu-berlin.de/.
1472 99 char Raw parallel ports
1473 0 = /dev/parport0 First parallel port
1474 1 = /dev/parport1 Second parallel port
1475 ...
1477 100 char POTS (analogue telephone) A/B port
1478 0 = /dev/phone0 First telephone port
1479 1 = /dev/phone1 Second telephone port
1480 ...
1482 101 char Motorola DSP 56xxx board
1483 0 = /dev/mdspstat Status information
1484 1 = /dev/mdsp1 First DSP board I/O controls
1485 ...
1486 16 = /dev/mdsp16 16th DSP board I/O controls
1488 102 char Philips SAA5249 Teletext signal decoder
1489 0 = /dev/tlk0 First Teletext decoder
1490 1 = /dev/tlk1 Second Teletext decoder
1491 2 = /dev/tlk2 Third Teletext decoder
1492 3 = /dev/tlk3 Fourth Teletext decoder
1494 103 char Arla network file system
1495 0 = /dev/xfs0 Arla XFS
1497 Arla is a free clone of the Andrew File System, AFS.
1498 Any resemblance with the Swedish milk producer is
1499 coincidental. For more information about the project,
1500 write to <arla-drinkers@stacken.kth.se> or subscribe
1501 to the arla announce mailing list by sending a mail to
1502 <arla-announce-request@stacken.kth.se>.
1504 104 char Flash BIOS support
1506 105 char Comtrol VS-1000 serial controller
1507 0 = /dev/ttyV0 First VS-1000 port
1508 1 = /dev/ttyV1 Second VS-1000 port
1509 ...
1511 106 char Comtrol VS-1000 serial controller - alternate devices
1512 0 = /dev/cuv0 First VS-1000 port
1513 1 = /dev/cuv1 Second VS-1000 port
1514 ...
1516 107 char 3Dfx Voodoo Graphics device
1517 0 = /dev/3dfx Primary 3Dfx graphics device
1519 108 char Device independent PPP interface
1520 0 = /dev/ppp Device independent PPP interface
1522 109 char Reserved for logical volume manager
1524 110 char miroMEDIA Surround board
1525 0 = /dev/srnd0 First miroMEDIA Surround board
1526 1 = /dev/srnd1 Second miroMEDIA Surround board
1527 ...
1529 111 char Philips SAA7146-based audio/video card
1530 0 = /dev/av0 First A/V card
1531 1 = /dev/av1 Second A/V card
1532 ...
1534 112 char ISI serial card
1535 0 = /dev/ttyM0 First ISI port
1536 1 = /dev/ttyM1 Second ISI port
1537 ...
1539 There is currently a device-naming conflict between
1540 these and PAM multimodems (major 78).
1542 113 char ISI serial card - alternate devices
1543 0 = /dev/cum0 Callout device for ttyM0
1544 1 = /dev/cum1 Callout device for ttyM1
1545 ...
1547 114 char Picture Elements ISE board
1548 0 = /dev/ise0 First ISE board
1549 1 = /dev/ise1 Second ISE board
1550 ...
1551 128 = /dev/isex0 Control node for first ISE board
1552 129 = /dev/isex1 Control node for second ISE board
1553 ...
1555 The ISE board is an embedded computer, optimized for
1556 image processing. The /dev/iseN nodes are the general
1557 I/O access to the board, the /dev/isex0 nodes command
1558 nodes used to control the board.
1560 115 char Console driver speaker
1561 0 = /dev/speaker Speaker device file
1563 Plays music using IBM BASIC style strings.
1565 116 char Advanced Linux System Driver (ALSA)
1567 117 char COSA/SRP synchronous serial card
1568 0 = /dev/cosa0c0 1st board, 1st channel
1569 1 = /dev/cosa0c1 1st board, 2nd channel
1570 ...
1571 16 = /dev/cosa1c0 2nd board, 1st channel
1572 17 = /dev/cosa1c1 2nd board, 2nd channel
1573 ...
1575 118 char Solidum ???
1576 0 = /dev/solnp0
1577 1 = /dev/solnp1
1578 ...
1579 128 = /dev/solnpctl0
1580 129 = /dev/solnpctl1
1581 ...
1583 119 char VMware virtual network control
1584 0 = /dev/vnet0 1st virtual network
1585 1 = /dev/vnet1 2nd virtual network
1586 ...
1588 120-127 LOCAL/EXPERIMENTAL USE
1590 128-135 char Unix98 PTY masters
1592 These devices should not have corresponding device
1593 nodes; instead they should be accessed through the
1594 /dev/ptmx cloning interface.
1596 136-143 char Unix98 PTY slaves
1597 0 = /dev/pts/0 First Unix98 pseudo-TTY
1598 1 = /dev/pts/1 Second Unix98 pesudo-TTY
1599 ...
1601 These device nodes are automatically generated with
1602 the proper permissions and modes by mounting the
1603 devpts filesystem onto /dev/pts with the appropriate
1604 mount options (distribution dependent, however, on
1605 *most* distributions the appropriate options are
1606 "mode=0620,gid=<gid of the "tty" group>".)
1608 144 char Encapsulated PPP
1609 0 = /dev/pppox0 First PPP over Ethernet
1610 ...
1611 63 = /dev/pppox63 64th PPP over Ethernet
1613 This is primarily used for ADSL.
1615 The SST 5136-DN DeviceNet interface driver has been
1616 relocated to major 183 due to an unfortunate conflict.
1618 145 char SAM9407-based soundcard
1619 0 = /dev/sam0_mixer
1620 1 = /dev/sam0_sequencer
1621 2 = /dev/sam0_midi00
1622 3 = /dev/sam0_dsp
1623 4 = /dev/sam0_audio
1624 6 = /dev/sam0_sndstat
1625 18 = /dev/sam0_midi01
1626 34 = /dev/sam0_midi02
1627 50 = /dev/sam0_midi03
1628 64 = /dev/sam1_mixer
1629 ...
1630 128 = /dev/sam2_mixer
1631 ...
1632 192 = /dev/sam3_mixer
1633 ...
1635 Device functions match OSS, but offer a number of
1636 addons, which are sam9407 specific. OSS can be
1637 operated simultaneously, taking care of the codec.
1639 146 char SYSTRAM SCRAMNet mirrored-memory network
1640 0 = /dev/scramnet0 First SCRAMNet device
1641 1 = /dev/scramnet1 Second SCRAMNet device
1642 ...
1644 147 char Aueral Semiconductor Vortex Audio device
1645 0 = /dev/aureal0 First Aureal Vortex
1646 1 = /dev/aureal1 Second Aureal Vortex
1647 ...
1649 148 char Technology Concepts serial card
1650 0 = /dev/ttyT0 First TCL port
1651 1 = /dev/ttyT1 Second TCL port
1652 ...
1654 149 char Technology Concepts serial card - alternate devices
1655 0 = /dev/cut0 Callout device for ttyT0
1656 1 = /dev/cut0 Callout device for ttyT1
1657 ...
1659 150 char Real-Time Linux FIFOs
1660 0 = /dev/rtf0 First RTLinux FIFO
1661 1 = /dev/rtf1 Second RTLinux FIFO
1662 ...
1664 151 char DPT I2O SmartRaid V controller
1665 0 = /dev/dpti0 First DPT I2O adapter
1666 1 = /dev/dpti1 Second DPT I2O adapter
1667 ...
1669 154 char Specialix RIO serial card
1670 0 = /dev/ttySR0 First RIO port
1671 ...
1672 255 = /dev/ttySR255 256th RIO port
1674 155 char Specialix RIO serial card - alternate devices
1675 0 = /dev/cusr0 Callout device for ttySR0
1676 ...
1677 255 = /dev/cusr255 Callout device for ttySR255
1679 156 char Specialix RIO serial card
1680 0 = /dev/ttySR256 257th RIO port
1681 ...
1682 255 = /dev/ttySR511 512th RIO port
1684 157 char Specialix RIO serial card - alternate devices
1685 0 = /dev/cusr256 Callout device for ttySR256
1686 ...
1687 255 = /dev/cusr511 Callout device for ttySR511
1689 158 char Dialogic GammaLink fax driver
1690 0 = /dev/gfax0 GammaLink channel 0
1691 1 = /dev/gfax1 GammaLink channel 1
1692 ...
1694 159 char Quicknet Technologies Internet PhoneJack/LineJack
1695 0 = /dev/ixj0 First device
1696 1 = /dev/ixj1 Second device
1697 ...
1699 160 char General Purpose Instrument Bus (GPIB)
1700 0 = /dev/gpib0 First GPIB bus
1701 1 = /dev/gpib1 Second GPIB bus
1702 ...
1704 161 char IrCOMM devices (IrDA serial/parallel emulation)
1705 0 = /dev/ircomm0 First IrCOMM device
1706 1 = /dev/ircomm1 Second IrCOMM device
1707 ...
1708 16 = /dev/irlpt0 First IrLPT device
1709 17 = /dev/irlpt1 Second IrLPT device
1710 ...
1712 162 char Raw block device interface
1713 0 = /dev/raw Raw I/O control device
1714 1 = /dev/raw1 First raw I/O device
1715 2 = /dev/raw2 Second raw I/O device
1716 ...
1718 163 char Radio Tech BIM-XXX-RS232 radio modem
1719 0 = /dev/bimrt0 First BIM radio modem
1720 1 = /dev/bimrt1 Second BIM radio modem
1721 ...
1723 164 char Chase Research AT/PCI-Fast serial card
1724 0 = /dev/ttyCH0 AT/PCI-Fast board 0, port 0
1725 ...
1726 15 = /dev/ttyCH15 AT/PCI-Fast board 0, port 15
1727 16 = /dev/ttyCH16 AT/PCI-Fast board 1, port 0
1728 ...
1729 31 = /dev/ttyCH31 AT/PCI-Fast board 1, port 15
1730 32 = /dev/ttyCH32 AT/PCI-Fast board 2, port 0
1731 ...
1732 47 = /dev/ttyCH47 AT/PCI-Fast board 2, port 15
1733 48 = /dev/ttyCH48 AT/PCI-Fast board 3, port 0
1734 ...
1735 63 = /dev/ttyCH63 AT/PCI-Fast board 3, port 15
1737 165 char Chase Research AT/PCI-Fast serial card - alternate devices
1738 0 = /dev/cuch0 Callout device corresponding to ttyCH0
1739 ...
1740 63 = /dev/cuch63 Callout device corresponding to ttyCH63
1742 166 char ACM USB modems
1743 0 = /dev/ttyACM0 First ACM modem
1744 1 = /dev/ttyACM1 Second ACM modem
1745 ...
1747 167 char ACM USB modems - alternate devices
1748 0 = /dev/cuacm0 Callout device for ttyACM0
1749 1 = /dev/cuacm1 Callout device for ttyACM1
1750 ...
1752 168 char Eracom CSA7000 PCI encryption adaptor
1753 0 = /dev/ecsa0 First CSA7000
1754 1 = /dev/ecsa1 Second CSA7000
1755 ...
1757 169 char Eracom CSA8000 PCI encryption adaptor
1758 0 = /dev/ecsa8-0 First CSA8000
1759 1 = /dev/ecsa8-1 Second CSA8000
1760 ...
1762 170 char AMI MegaRAC remote access controller
1763 0 = /dev/megarac0 First MegaRAC card
1764 1 = /dev/megarac1 Second MegaRAC card
1765 ...
1767 171 char Reserved for IEEE 1394 (Firewire)
1770 172 char Moxa Intellio serial card
1771 0 = /dev/ttyMX0 First Moxa port
1772 1 = /dev/ttyMX1 Second Moxa port
1773 ...
1774 127 = /dev/ttyMX127 128th Moxa port
1775 128 = /dev/moxactl Moxa control port
1777 173 char Moxa Intellio serial card - alternate devices
1778 0 = /dev/cumx0 Callout device for ttyMX0
1779 1 = /dev/cumx1 Callout device for ttyMX1
1780 ...
1781 127 = /dev/cumx127 Callout device for ttyMX127
1783 174 char SmartIO serial card
1784 0 = /dev/ttySI0 First SmartIO port
1785 1 = /dev/ttySI1 Second SmartIO port
1786 ...
1788 175 char SmartIO serial card - alternate devices
1789 0 = /dev/cusi0 Callout device for ttySI0
1790 1 = /dev/cusi1 Callout device for ttySI1
1791 ...
1793 176 char nCipher nFast PCI crypto accelerator
1794 0 = /dev/nfastpci0 First nFast PCI device
1795 1 = /dev/nfastpci1 First nFast PCI device
1796 ...
1798 177 char TI PCILynx memory spaces
1799 0 = /dev/pcilynx/aux0 AUX space of first PCILynx card
1800 ...
1801 15 = /dev/pcilynx/aux15 AUX space of 16th PCILynx card
1802 16 = /dev/pcilynx/rom0 ROM space of first PCILynx card
1803 ...
1804 31 = /dev/pcilynx/rom15 ROM space of 16th PCILynx card
1805 32 = /dev/pcilynx/ram0 RAM space of first PCILynx card
1806 ...
1807 47 = /dev/pcilynx/ram15 RAM space of 16th PCILynx card
1809 178 char Giganet cLAN1xxx virtual interface adapter
1810 0 = /dev/clanvi0 First cLAN adapter
1811 1 = /dev/clanvi1 Second cLAN adapter
1812 ...
1814 179 char CCube DVXChip-based PCI products
1815 0 = /dev/dvxirq0 First DVX device
1816 1 = /dev/dvxirq1 Second DVX device
1817 ...
1819 180 char USB devices
1820 0 = /dev/usb/lp0 First USB printer
1821 ...
1822 15 = /dev/usb/lp15 16th USB printer
1823 16 = /dev/usb/mouse0 First USB mouse
1824 ...
1825 31 = /dev/usb/mouse15 16th USB mouse
1826 32 = /dev/usb/ez0 First USB firmware loader
1827 ...
1828 47 = /dev/usb/ez15 16th USB firmware loader
1829 48 = /dev/usb/scanner0 First USB scanner
1830 ...
1831 63 = /dev/usb/scanner15 16th USB scanner
1833 181 char Conrad Electronic parallel port radio clocks
1834 0 = /dev/pcfclock0 First Conrad radio clock
1835 1 = /dev/pcfclock1 Second Conrad radio clock
1836 ...
1838 182 char Picture Elements THR2 binarizer
1839 0 = /dev/pethr0 First THR2 board
1840 1 = /dev/pethr1 Second THR2 board
1841 ...
1843 183 char SST 5136-DN DeviceNet interface
1844 0 = /dev/ss5136dn0 First DeviceNet interface
1845 1 = /dev/ss5136dn1 Second DeviceNet interface
1846 ...
1848 This device used to be assigned to major number 144.
1849 It had to be moved due to an unfortunate conflict.
1851 184 char Picture Elements' video simulator/sender
1852 0 = /dev/pevss0 First sender board
1853 1 = /dev/pevss1 Second sender board
1854 ...
1856 185 char Reserved for InterMezzo high availability file system
1858 186 char Object-based storage control device
1859 0 = /dev/obd0 First obd control device
1860 1 = /dev/obd1 Second obd control device
1861 ...
1863 See ftp://ftp.lustre.org/pub/obd for code and information.
1865 187 char UNALLOCATED
1867 188 char USB serial converters
1868 0 = /dev/ttyUSB0 First USB serial converter
1869 1 = /dev/ttyUSB1 Second USB serial converter
1870 ...
1872 189 char USB serial converters - alternate devices
1873 0 = /dev/cuusb0 Callout device corresponding to ttyUSB0
1874 1 = /dev/cuusb1 Callout device corresponding to ttyUSB1
1875 ...
1877 190-239 UNALLOCATED
1879 240-254 LOCAL/EXPERIMENTAL USE
1881 255 RESERVED
1883 This major is reserved to assist the expansion to a
1884 larger number space. No device nodes with this major
1885 should ever be created on the filesystem.
1887 **** ADDITIONAL /dev DIRECTORY ENTRIES
1889 This section details additional entries that should or may exist in
1890 the /dev directory. It is preferred that symbolic links use the same
1891 form (absolute or relative) as is indicated here. Links are
1892 classified as "hard" or "symbolic" depending on the preferred type of
1893 link; if possible, the indicated type of link should be used.
1896 Compulsory links
1898 These links should exist on all systems:
1900 /dev/fd /proc/self/fd symbolic File descriptors
1901 /dev/stdin fd/0 symbolic stdin file descriptor
1902 /dev/stdout fd/1 symbolic stdout file descriptor
1903 /dev/stderr fd/2 symbolic stderr file descriptor
1904 /dev/nfsd socksys symbolic Required by iBCS-2
1905 /dev/X0R null symbolic Required by iBCS-2
1906 /dev/i2o* /dev/i2o/* symbolic Backward compatibility
1908 Note: /dev/X0R is <letter X>-<digit 0>-<letter R>.
1910 Recommended links
1912 It is recommended that these links exist on all systems:
1914 /dev/core /proc/kcore symbolic Backward compatibility
1915 /dev/ramdisk ram0 symbolic Backward compatibility
1916 /dev/ftape qft0 symbolic Backward compatibility
1917 /dev/bttv0 video0 symbolic Backward compatibility
1918 /dev/radio radio0 symbolic Backward compatibility
1919 /dev/scd? sr? hard Alternate SCSI CD-ROM name
1921 Locally defined links
1923 The following links may be established locally to conform to the
1924 configuration of the system. This is merely a tabulation of existing
1925 practice, and does not constitute a recommendation. However, if they
1926 exist, they should have the following uses.
1928 /dev/mouse mouse port symbolic Current mouse device
1929 /dev/tape tape device symbolic Current tape device
1930 /dev/cdrom CD-ROM device symbolic Current CD-ROM device
1931 /dev/cdwriter CD-writer symbolic Current CD-writer device
1932 /dev/scanner scanner symbolic Current scanner device
1933 /dev/modem modem port symbolic Current dialout device
1934 /dev/root root device symbolic Current root filesystem
1935 /dev/swap swap device symbolic Current swap device
1937 /dev/modem should not be used for a modem which supports dialin as
1938 well as dialout, as it tends to cause lock file problems. If it
1939 exists, /dev/modem should point to the appropriate primary TTY device
1940 (the use of the alternate callout devices is deprecated).
1942 For SCSI devices, /dev/tape and /dev/cdrom should point to the
1943 ``cooked'' devices (/dev/st* and /dev/sr*, respectively), whereas
1944 /dev/cdwriter and /dev/scanner should point to the appropriate generic
1945 SCSI devices (/dev/sg*).
1947 /dev/mouse may point to a primary serial TTY device, a hardware mouse
1948 device, or a socket for a mouse driver program (e.g. /dev/gpmdata).
1950 Sockets and pipes
1952 Non-transient sockets and named pipes may exist in /dev. Common entries are:
1954 /dev/printer socket lpd local socket
1955 /dev/log socket syslog local socket
1956 /dev/gpmdata socket gpm mouse multiplexer
1959 **** TERMINAL DEVICES
1961 Terminal, or TTY devices are a special class of character devices. A
1962 terminal device is any device that could act as a controlling terminal
1963 for a session; this includes virtual consoles, serial ports, and
1964 pseudoterminals (PTYs).
1966 All terminal devices share a common set of capabilities known as line
1967 diciplines; these include the common terminal line dicipline as well
1968 as SLIP and PPP modes.
1970 All terminal devices are named similarly; this section explains the
1971 naming and use of the various types of TTYs. Note that the naming
1972 conventions include several historical warts; some of these are
1973 Linux-specific, some were inherited from other systems, and some
1974 reflect Linux outgrowing a borrowed convention.
1976 A hash mark (#) in a device name is used here to indicate a decimal
1977 number without leading zeroes.
1979 Virtual consoles and the console device
1981 Virtual consoles are full-screen terminal displays on the system video
1982 monitor. Virtual consoles are named /dev/tty#, with numbering
1983 starting at /dev/tty1; /dev/tty0 is the current virtual console.
1984 /dev/tty0 is the device that should be used to access the system video
1985 card on those architectures for which the frame buffer devices
1986 (/dev/fb*) are not applicable. Do not use /dev/console
1987 for this purpose.
1989 The console device, /dev/console, is the device to which system
1990 messages should be sent, and on which logins should be permitted in
1991 single-user mode. Starting with Linux 2.1.71, /dev/console is managed
1992 by the kernel; for previous versions it should be a symbolic link to
1993 either /dev/tty0, a specific virtual console such as /dev/tty1, or to
1994 a serial port primary (tty*, not cu*) device, depending on the
1995 configuration of the system.
1997 Serial ports
1999 Serial ports are RS-232 serial ports and any device which simulates
2000 one, either in hardware (such as internal modems) or in software (such
2001 as the ISDN driver.) Under Linux, each serial ports has two device
2002 names, the primary or callin device and the alternate or callout one.
2003 Each kind of device is indicated by a different letter. For any
2004 letter X, the names of the devices are /dev/ttyX# and /dev/cux#,
2005 respectively; for historical reasons, /dev/ttyS# and /dev/ttyC#
2006 correspond to /dev/cua# and /dev/cub#. In the future, it should be
2007 expected that multiple letters will be used; all letters will be upper
2008 case for the "tty" device (e.g. /dev/ttyDP#) and lower case for the
2009 "cu" device (e.g. /dev/cudp#).
2011 The names /dev/ttyQ# and /dev/cuq# are reserved for local use.
2013 The alternate devices provide for kernel-based exclusion and somewhat
2014 different defaults than the primary devices. Their main purpose is to
2015 allow the use of serial ports with programs with no inherent or broken
2016 support for serial ports. Their use is deprecated, and they may be
2017 removed from a future version of Linux.
2019 Arbitration of serial ports is provided by the use of lock files with
2020 the names /var/lock/LCK..ttyX#. The contents of the lock file should
2021 be the PID of the locking process as an ASCII number.
2023 It is common practice to install links such as /dev/modem
2024 which point to serial ports. In order to ensure proper locking in the
2025 presence of these links, it is recommended that software chase
2026 symlinks and lock all possible names; additionally, it is recommended
2027 that a lock file be installed with the corresponding alternate
2028 device. In order to avoid deadlocks, it is recommended that the locks
2029 are acquired in the following order, and released in the reverse:
2031 1. The symbolic link name, if any (/var/lock/LCK..modem)
2032 2. The "tty" name (/var/lock/LCK..ttyS2)
2033 3. The alternate device name (/var/lock/LCK..cua2)
2035 In the case of nested symbolic links, the lock files should be
2036 installed in the order the symlinks are resolved.
2038 Under no circumstances should an application hold a lock while waiting
2039 for another to be released. In addition, applications which attempt
2040 to create lock files for the corresponding alternate device names
2041 should take into account the possibility of being used on a non-serial
2042 port TTY, for which no alternate device would exist.
2044 Pseudoterminals (PTYs)
2046 Pseudoterminals, or PTYs, are used to create login sessions or provide
2047 other capabilities requiring a TTY line dicipline (including SLIP or
2048 PPP capability) to arbitrary data-generation processes. Each PTY has
2049 a master side, named /dev/pty[p-za-e][0-9a-f], and a slave side, named
2050 /dev/tty[p-za-e][0-9a-f]. The kernel arbitrates the use of PTYs by
2051 allowing each master side to be opened only once.
2053 Once the master side has been opened, the corresponding slave device
2054 can be used in the same manner as any TTY device. The master and
2055 slave devices are connected by the kernel, generating the equivalent
2056 of a bidirectional pipe with TTY capabilities.
2058 Recent versions of the Linux kernels and GNU libc contain support for
2059 the System V/Unix98 naming scheme for PTYs, which assigns a common
2060 device, /dev/ptmx, to all the masters (opening it will automatically
2061 give you a previously unassigned PTY) and a subdirectory, /dev/pts,
2062 for the slaves; the slaves are named with decimal integers (/dev/pts/#
2063 in our notation). This removes the problem of exhausting the
2064 namespace and enables the kernel to automatically create the device
2065 nodes for the slaves on demand using the "devpts" filesystem.