GENERIC_TINY revision 1.68 1 # $NetBSD: GENERIC_TINY,v 1.68 2004/07/06 22:53:36 mycroft Exp $
2 #
3 # GENERIC_TINY -- suitable default for 4M machines
4 # No EISA, PCI, or SCSI.
5 #
6
7 include "arch/i386/conf/std.i386"
8
9 #options INCLUDE_CONFIG_FILE # embed config file in kernel binary
10
11 makeoptions COPTS="-Os"
12
13 maxusers 8 # estimated number of users
14
15 # CPU support. At least one is REQUIRED.
16 options I386_CPU
17 options I486_CPU
18 options I586_CPU
19 options I686_CPU
20
21 # CPU-related options.
22 options MATH_EMULATE # floating point emulation
23 #options VM86 # virtual 8086 emulation
24 #options USER_LDT # user-settable LDT; used by WINE
25 # insert delay no-ops in interrupts; recommended on very old machines
26 options PIC_DELAY
27
28 # This option allows you to force a serial console at the specified
29 # I/O address. see console(4) for details.
30 #options CONSDEVNAME="\"com\""
31
32 # The following options override the memory sizes passed in from the boot
33 # block. Use them *only* if the boot block is unable to determine the correct
34 # values. Note that the BIOS may *correctly* report less than 640k of base
35 # memory if the extended BIOS data area is located at the top of base memory
36 # (as is the case on most recent systems).
37 #options REALBASEMEM=... # size of base memory
38 #options REALEXTMEM=... # size of extended memory
39
40 # Save a physical page per process by not setting a kernel stack red zone.
41 options NOREDZONE
42
43 # Standard system options
44
45 options INSECURE # disable kernel security levels - X needs this
46
47 options RTC_OFFSET=0 # hardware clock is this many mins. west of GMT
48 #options NTP # NTP phase/frequency locked loop
49
50 #options KTRACE # system call tracing via ktrace(1)
51
52 #options SYSVMSG # System V-like message queues
53 #options SYSVSEM # System V-like semaphores
54 #options SYSVSHM # System V-like memory sharing
55 #options SHMMAXPGS=2048 # 2048 pages is the default
56 #options P1003_1B_SEMAPHORE # p1003.1b semaphore support
57
58 options NMBCLUSTERS=256
59
60 #options LKM # loadable kernel modules
61
62 #options USERCONF # userconf(4) support
63 options PIPE_SOCKETPAIR # smaller, but slower pipe(2)
64
65 # Diagnostic/debugging support options
66 #options DIAGNOSTIC # expensive kernel consistency checks
67 #options DEBUG # expensive debugging checks/support
68 #options KMEMSTATS # kernel memory statistics (vmstat -m)
69 #options DDB # in-kernel debugger
70 #options DDB_ONPANIC=1 # see also sysctl(8): `ddb.onpanic'
71 #options DDB_HISTORY_SIZE=512 # enable history editing in DDB
72 #options KGDB # remote debugger
73 #options KGDB_DEVNAME="\"com\"",KGDB_DEVADDR=0x3f8,KGDB_DEVRATE=9600
74 #makeoptions DEBUG="-g" # compile full symbol table
75
76 # Compatibility options
77 #options COMPAT_NOMID # NetBSD 0.8, 386BSD, and BSDI
78 #options COMPAT_09 # NetBSD 0.9
79 #options COMPAT_10 # NetBSD 1.0
80 #options COMPAT_11 # NetBSD 1.1
81 options COMPAT_12 # NetBSD 1.2, 386BSD, and BSDI
82 options COMPAT_13 # NetBSD 1.3, 386BSD, and BSDI
83 options COMPAT_14 # NetBSD 1.4
84 options COMPAT_15 # NetBSD 1.5
85 options COMPAT_16 # NetBSD 1.6
86 options COMPAT_43 # 4.3BSD, 386BSD, and BSDI
87 options COMPAT_386BSD_MBRPART # recognize old partition ID
88 #options TCP_COMPAT_42 # 4.2BSD TCP/IP bug compat. Not recommended.
89
90 #options COMPAT_SVR4 # binary compatibility with SVR4
91 #options COMPAT_IBCS2 # binary compatibility with SCO and ISC
92 #options COMPAT_LINUX # binary compatibility with Linux
93 #options COMPAT_FREEBSD # binary compatibility with FreeBSD
94
95 # File systems
96 file-system FFS # UFS
97 #file-system EXT2FS # second extended file system (linux)
98 #file-system LFS # log-structured file system
99 #file-system MFS # memory file system
100 file-system NFS # Network File System client
101 file-system CD9660 # ISO 9660 + Rock Ridge file system
102 file-system MSDOSFS # MS-DOS file system
103 #file-system FDESC # /dev/fd
104 file-system KERNFS # /kern
105 #file-system NULLFS # loopback file system
106 #file-system PORTAL # portal filesystem (still experimental)
107 #file-system PROCFS # /proc
108 #file-system UMAPFS # NULLFS + uid and gid remapping
109 #file-system UNION # union file system
110
111 # File system options
112 #options QUOTA # UFS quotas
113 #options FFS_EI # FFS Endian Independant support
114 #options NFSSERVER # Network File System server
115 #options EXT2FS_SYSTEM_FLAGS # makes ext2fs file flags (append and
116 # immutable) behave as system flags.
117 options VNODE_OP_NOINLINE # don't inline vnode op calls
118
119 # Networking options
120 #options GATEWAY # packet forwarding
121 options INET # IP + ICMP + TCP + UDP
122 #options MROUTING # IP multicast routing
123 #options NS # XNS
124 #options NSIP # XNS tunneling over IP
125 #options ISO,TPIP # OSI
126 #options EON # OSI tunneling over IP
127 #options CCITT,LLC,HDLC # X.25
128 #options NETATALK # AppleTalk networking protocols
129 #options PPP_BSDCOMP # BSD-Compress compression support for PPP
130 #options PPP_DEFLATE # Deflate compression support for PPP
131 #options PPP_FILTER # Active filter support for PPP (requires bpf)
132 #options PFIL_HOOKS # pfil(9) packet filter hooks
133 #options IPFILTER_LOG # ipmon(8) log support
134 #options IPFILTER_DEFAULT_BLOCK # block all packets by default
135 #options TCP_DEBUG # Record last TCP_NDEBUG packets with SO_DEBUG
136
137 #options ALTQ # Manipulate network interfaces' output queues
138 #options ALTQ_BLUE # Stochastic Fair Blue
139 #options ALTQ_CBQ # Class-Based Queueing
140 #options ALTQ_CDNR # Diffserv Traffic Conditioner
141 #options ALTQ_FIFOQ # First-In First-Out Queue
142 #options ALTQ_FLOWVALVE # RED/flow-valve (red-penalty-box)
143 #options ALTQ_HFSC # Hierarchical Fair Service Curve
144 #options ALTQ_LOCALQ # Local queueing discipline
145 #options ALTQ_PRIQ # Priority Queueing
146 #options ALTQ_RED # Random Early Detection
147 #options ALTQ_RIO # RED with IN/OUT
148 #options ALTQ_WFQ # Weighted Fair Queueing
149
150 # These options enable verbose messages for several subsystems.
151 # Warning, these may compile large string tables into the kernel!
152 #options EISAVERBOSE # verbose EISA device autoconfig messages
153 #options PCIVERBOSE # verbose PCI device autoconfig messages
154 #options PCI_CONFIG_DUMP # verbosely dump PCI config space
155 #options PCMCIAVERBOSE # verbose PCMCIA configuration messages
156 #options SCSIVERBOSE # human readable SCSI error messages
157 #options USBVERBOSE # verbose USB device autoconfig messages
158
159 #options NFS_BOOT_BOOTP,NFS_BOOT_BOOTPARAM
160
161 # Kernel root file system and dump configuration.
162 config netbsd root on ? type ?
163 #config netbsd root on sd0a type ffs
164 #config netbsd root on ? type nfs
165
166 #
167 # wscons options
168 #
169 # builtin terminal emulations
170 #options WSEMUL_SUN # sun terminal emulation
171 options WSEMUL_VT100 # VT100 / VT220 emulation
172 # different kernel output - see dev/wscons/wsdisplayvar.h
173 options WS_KERNEL_FG=WSCOL_GREEN
174 #options WS_KERNEL_BG=WSCOL_BLACK
175 # compatibility to other console drivers
176 options WSDISPLAY_COMPAT_PCVT # emulate some ioctls
177 options WSDISPLAY_COMPAT_SYSCONS # emulate some ioctls
178 options WSDISPLAY_COMPAT_USL # VT handling
179 options WSDISPLAY_COMPAT_RAWKBD # can get raw scancodes
180 # see dev/pckbc/wskbdmap_mfii.c for implemented layouts
181 #options PCKBD_LAYOUT="(KB_DE | KB_NODEAD)"
182 # allocate a number of virtual screens at autoconfiguration time
183 #options WSDISPLAY_DEFAULTSCREENS=4
184 # use a large software cursor that doesn't blink
185 options PCDISPLAY_SOFTCURSOR
186
187 #
188 # Device configuration
189 #
190
191 mainbus0 at root
192
193 cpu0 at mainbus0
194
195 #apm0 at mainbus0 # Advanced power management
196
197
198 # Basic Bus Support
199
200 # PCI bus support
201 #pci* at mainbus? bus ?
202 #pci* at pchb? bus ?
203 #pci* at ppb? bus ?
204
205 # PCI bridges
206 #pchb* at pci? dev ? function ? # PCI-Host bridges
207 #pceb* at pci? dev ? function ? # PCI-EISA bridges
208 #pcib* at pci? dev ? function ? # PCI-ISA bridges
209 #ichlpcib* at pci? dev ? function ? # Intel ICH PCI-ISA w/ watchdog support
210 #ppb* at pci? dev ? function ? # PCI-PCI bridges
211 # XXX 'puc's aren't really bridges, but there's no better place for them here
212 #puc* at pci? dev ? function ? # PCI "universal" comm. cards
213
214 # EISA bus support
215 #eisa0 at mainbus?
216 #eisa0 at pceb?
217
218 # ISA bus support
219 isa0 at mainbus?
220 #isa0 at pceb?
221 #isa0 at pcib?
222 #isa0 at ichlpcib?
223
224 # PCMCIA bus support
225 pcmcia* at pcic? controller ? socket ?
226
227 # ISA PCMCIA controllers
228 pcic0 at isa? port 0x3e0 iomem 0xd0000 iosiz 0x4000
229 pcic1 at isa? port 0x3e2 iomem 0xd4000 iosiz 0x4000
230
231 # ISA Plug-and-Play bus support
232 #isapnp0 at isa?
233
234 # ISA Plug-and-Play PCMCIA controllers
235 #pcic* at isapnp?
236
237 # Coprocessor Support
238
239 # Math Coprocessor support
240 npx0 at isa? port 0xf0 irq 13 # x86 math coprocessor
241
242 # Console Devices
243
244 # ISA console
245 #pc0 at isa? port 0x60 irq 1 # pccons generic PC console driver
246
247 # wscons
248 pckbc0 at isa? # pc keyboard controller
249 pckbd* at pckbc? # PC keyboard
250 #pms* at pckbc? # PS/2 mouse for wsmouse
251 vga0 at isa?
252 #vga* at pci? dev ? function ?
253 pcdisplay0 at isa? # CGA, MDA, EGA, HGA
254 wsdisplay* at vga? console ?
255 wsdisplay* at pcdisplay? console ?
256 wskbd* at pckbd? console ?
257 #wsmouse* at pms? mux 0
258
259
260 #pcppi0 at isa?
261 #sysbeep0 at pcppi?
262
263 # Serial Devices
264
265 # PCI serial interfaces
266 #com* at puc? port ? # 16x50s on "universal" comm boards
267 #cy* at pci? dev ? function ? # Cyclades Cyclom-Y serial boards
268
269 # ISA Plug-and-Play serial interfaces
270 #com* at isapnp? # Modems and serial boards
271
272 # PCMCIA serial interfaces
273 com* at pcmcia? function ? # Modems and serial cards
274
275 # ISA serial interfaces
276 #options COM_HAYESP # adds Hayes ESP serial board support
277 com0 at isa? port 0x3f8 irq 4 # Standard PC serial ports
278 com1 at isa? port 0x2f8 irq 3
279 com2 at isa? port 0x3e8 irq 5
280 #com3 at isa? port 0x2e8 irq 9
281 #ast0 at isa? port 0x1a0 irq 5 # AST 4-port serial cards
282 #com* at ast? slave ?
283 #boca0 at isa? port 0x100 irq 5 # BOCA 8-port serial cards
284 #com* at boca? slave ?
285 #rtfps0 at isa? port 0x1230 irq 10 # RT 4-port serial cards
286 #com* at rtfps? slave ?
287 #cy0 at isa? iomem 0xd4000 irq 12 # Cyclades serial cards
288
289
290 # Parallel Printer Interfaces
291
292 # PCI parallel printer interfaces
293 #lpt* at puc? port ? # || ports on "universal" comm boards
294
295 # ISA parallel printer interfaces
296 lpt0 at isa? port 0x378 irq 7 # standard PC parallel ports
297 #lpt1 at isa? port 0x278
298 #lpt2 at isa? port 0x3bc
299
300
301 # SCSI Controllers and Devices
302
303 # PCI SCSI controllers
304 #ahc* at pci? dev ? function ? # Adaptec [23]94x, aic78x0 SCSI
305 #dpt* at pci? dev ? function ? # DPT SmartCache/SmartRAID
306 #bha* at pci? dev ? function ? # BusLogic 9xx SCSI
307 #isp* at pci? dev ? function ? # Qlogic ISP [12]0x0 SCSI/FibreChannel
308 #siop* at pci? dev ? function ? # NCR 53c8xx SCSI
309 #esiop* at pci? dev ? function ? # NCR 53c875 SCSI and newer
310 #options SIOP_SYMLED # drive the act. LED in software
311
312 # EISA SCSI controllers
313 #ahb* at eisa? slot ? # Adaptec 174[02] SCSI
314 #ahc* at eisa? slot ? # Adaptec 274x, aic7770 SCSI
315 #bha* at eisa? slot ? # BusLogic 7xx SCSI
316 #dpt* at eisa? slot ? # DPT SmartCache/SmartRAID
317 #uha* at eisa? slot ? # UltraStor 24f SCSI
318
319 # PCMCIA SCSI controllers
320 #aic* at pcmcia? function ? # Adaptec APA-1460 SCSI
321
322 # ISA Plug-and-Play SCSI controllers
323 #aic* at isapnp? # Adaptec AHA-1520B
324
325 # ISA SCSI controllers
326 #aha0 at isa? port 0x330 irq ? drq ? # Adaptec 154[02] SCSI
327 #aha1 at isa? port 0x334 irq ? drq ?
328 #ahc0 at isa? port ? irq ? # Adaptec 284x SCSI
329 #aic0 at isa? port 0x340 irq 11 # Adaptec 152[02] SCSI
330 #bha0 at isa? port 0x330 irq ? drq ? # BusLogic [457]4X SCSI
331 #bha1 at isa? port 0x334 irq ? drq ?
332 #sea0 at isa? iomem 0xc8000 irq 5 # Seagate/Future Domain SCSI
333 #uha0 at isa? port 0x330 irq ? drq ? # UltraStor [13]4f SCSI
334 #uha1 at isa? port 0x340 irq ? drq ?
335 #wds0 at isa? port 0x350 irq 15 drq 6 # WD7000 and TMC-7000 controllers
336 #wds1 at isa? port 0x358 irq 11 drq 5
337
338 # SCSI bus support
339 #scsibus* at scsi?
340
341 # SCSI devices
342 #sd* at scsibus? target ? lun ? # SCSI disk drives
343 #st* at scsibus? target ? lun ? # SCSI tape drives
344 #cd* at scsibus? target ? lun ? # SCSI CD-ROM drives
345 #ch* at scsibus? target ? lun ? # SCSI autochangers
346 #ss* at scsibus? target ? lun ? # SCSI scanners
347 #uk* at scsibus? target ? lun ? # SCSI unknown
348
349
350 # IDE and related devices
351
352 # ISA Plug-and-Play IDE controllers
353 #wdc* at isapnp?
354
355 # PCMCIA IDE controllers
356 wdc* at pcmcia? function ?
357
358 # ISA IDE controllers
359 wdc0 at isa? port 0x1f0 irq 14 # ST506, ESDI, and IDE controllers
360 wdc1 at isa? port 0x170 irq 15
361
362 # ATA (IDE) bus support
363 atabus* at ata?
364
365 # IDE drives
366 wd* at atabus? drive ? # the drives themselves
367
368 # ATAPI bus support
369 atapibus* at atapi?
370
371 # ATAPI devices
372 cd* at atapibus? drive ? # ATAPI CD-ROM drives
373 sd* at atapibus? drive ? # ATAPI disk drives
374
375
376 # Miscellaneous mass storage devices
377
378 # ISA floppy
379 fdc0 at isa? port 0x3f0 irq 6 drq 2 # standard PC floppy controllers
380 #fdc1 at isa? port 0x370 irq ? drq ?
381 fd* at fdc? drive ? # the drives themselves
382 # some machines need you to do this instead of fd*
383 #fd0 at fdc0 drive 0
384
385 # ISA CD-ROM devices
386 #mcd0 at isa? port 0x300 irq 10 # Mitsumi CD-ROM drives
387
388 # ISA tape devices
389 # note: the wt driver conflicts unpleasantly with SMC boards at the
390 # same I/O address. The probe reprograms their EEPROMs. Don't
391 # uncomment it unless you are actually using it.
392 #wt0 at isa? port 0x308 irq 5 drq 1 # Archive and Wangtek QIC tape drives
393
394
395 # Network Interfaces
396
397 # PCI network interfaces
398 #en* at pci? dev ? function ? # ENI/Adaptec ATM
399 #ep* at pci? dev ? function ? # 3Com 3c59x/3c90x Ethernet
400 #epic* at pci? dev ? function ? # SMC EPIC/100 Ethernet
401 #esh* at pci? dev ? function ? # Essential HIPPI card
402 #fpa* at pci? dev ? function ? # DEC DEFPA FDDI
403 #fxp* at pci? dev ? function ? # Intel EtherExpress PRO 10+/100B
404 #le* at pci? dev ? function ? # PCnet-PCI Ethernet
405 #ne* at pci? dev ? function ? # NE2000-compatible Ethernet
406 #tl* at pci? dev ? function ? # ThunderLAN-based Ethernet
407 #tlp* at pci? dev ? function ? # DECchip 21x4x and clones
408
409 # EISA network interfaces
410 #ep* at eisa? slot ? # 3Com 3c579 Ethernet
411 #fea* at eisa? slot ? # DEC DEFEA FDDI
412
413 # ISA Plug-and-Play network interfaces
414 #ep* at isapnp? # 3Com 3c509 Ethernet
415 #ne* at isapnp? # NE2000-compatible Ethernet
416
417 # PCMCIA network interfaces
418 ep* at pcmcia? function ? # 3Com 3c589 and 3c562 Ethernet
419 mbe* at pcmcia? function ? # MB8696x based Ethernet
420 ne* at pcmcia? function ? # NE2000-compatible Ethernet
421 sm* at pcmcia? function ? # Megahertz Ethernet
422
423 # ISA network interfaces
424 ate0 at isa? port 0x2a0 irq ? # AT1700
425 ec0 at isa? port 0x250 iomem 0xd8000 irq 9 # 3Com 3c503 Ethernet
426 eg0 at isa? port 0x280 irq 9 # 3C505 ethernet cards
427 el0 at isa? port 0x300 irq 9 # 3C501 ethernet cards
428 ep0 at isa? port ? irq ? # 3C509 ethernet cards
429 ef0 at isa? port 0x360 iomem 0xd0000 irq 7 # 3C507
430 ai0 at isa? port 0x360 iomem 0xd0000 irq 7 # StarLAN
431 fmv0 at isa? port 0x2a0 irq ? # FMV-180 series
432 ix0 at isa? port 0x300 irq 10 # EtherExpress/16
433 iy0 at isa? port 0x360 irq ? # EtherExpress PRO 10 ISA
434 lc0 at isa? port 0x320 iomem ? irq ? # DEC EtherWORKS III (LEMAC)
435 #depca0 at isa? port 0x300 iomem 0xc8000 iosiz 0x8000 irq 5 # DEPCA
436 #le* at depca?
437 nele0 at isa? port 0x320 irq 9 drq 7 # NE2100
438 le* at nele?
439 bicc0 at isa? port 0x320 irq 10 drq 7 # BICC IsoLan
440 le* at bicc?
441 ne0 at isa? port 0x280 irq 9 # NE[12]000 ethernet cards
442 ne1 at isa? port 0x300 irq 10
443 sm0 at isa? port 0x300 irq 10 # SMC91C9x Ethernet
444 we0 at isa? port 0x280 iomem 0xd0000 irq 9 # WD/SMC Ethernet
445 we1 at isa? port 0x300 iomem 0xcc000 irq 10
446
447 # MII bus support
448 #mii* at tl?
449
450 # MII PHY network interfaces
451 #tlphy* at mii? dev ? # ThunderLAN PHYs
452 #nsphy* at mii? dev ? # NS and compatible PHYs
453 #ukphy* at mii? phy ? # generic unknown PHYs
454
455
456 # USB Controller and Devices
457
458 # PCI USB controllers
459 #uhci* at pci? # Universal Host Controller (Intel)
460 #ohci* at pci? # Open Host Controller
461
462 # USB bus support
463 #usb* at uhci?
464 #usb* at ohci?
465
466 # USB Hubs
467 #uhub* at usb?
468 #uhub* at uhub? port ?
469
470 # USB Mice
471 #ums* at uhub? port ?
472
473 # USB Keyboards
474 #ukbd* at uhub? port ?
475
476 # USB Generic HID devices
477 #uhid* at uhub? port ?
478
479 # USB Printer
480 #ulpt* at uhub? port ?
481
482 # USB Mass Storage
483 #umass* at uhub? port ? configuration ? interface ?
484 #scsibus* at umass?
485 #wd* at umass?
486
487 # USB Ethernet adapters
488 #aue* at uhub? port ? # ADMtek AN986 Pegasus based adapters
489 #cue* at uhub? port ? # CATC USB-EL1201A based adapters
490 #kue* at uhub? port ? # Kawasaki LSI KL5KUSB101B based adapters
491 #uax* at uhub? port ? # ASIX AX88172 based adapters
492 #url* at uhub? port ? # Realtek RTL8150L based adapters
493
494 # Y@P firmware loader
495 #uyap* at uhub? port ?
496
497 # USB Generic driver
498 #ugen* at uhub? port ?
499
500 # Audio Devices
501
502 # PCI audio devices
503 #eap* at pci? dev ? function ? # Ensoniq AudioPCI
504
505 # ISA Plug-and-Play audio devices
506 #guspnp* at isapnp? # Gravis Ultra Sound PnP audio
507 #sb* at isapnp? # SoundBlaster-compatible audio
508 #ym* at isapnp? # Yamaha OPL3-SA3 audio
509
510 # ISA audio devices
511 #aria0 at isa? port 0x290 irq 10 # Aria
512 #gus0 at isa? port 0x220 irq 7 drq 1 drq2 6 # Gravis Ultra Sound
513 #pas0 at isa? port 0x220 irq 7 drq 1 # ProAudio Spectrum
514 #pss0 at isa? port 0x220 irq 7 drq 6 # Personal Sound System
515 #sp0 at pss0 port 0x530 irq 10 drq 0 # sound port driver
516 #sb0 at isa? port 0x220 irq 5 drq 1 drq2 5 # SoundBlaster
517 #wss0 at isa? port 0x530 irq 10 drq 0 drq2 1 # Windows Sound System
518
519 # Audio support
520 #audio* at audiobus?
521
522 # The spkr driver provides a simple tone interface to the built in speaker.
523 #spkr0 at pcppi? # PC speaker
524
525
526 # Joysticks
527
528 # ISA Plug-and-Play joysticks
529 #joy* at isapnp? # Game ports (usually on audio cards)
530
531 # ISA joysticks. Probe is a little strange; add only if you have one.
532 #joy0 at isa? port 0x201
533
534
535 # Miscellaneous Devices
536
537 # Planetconnect Satellite receiver driver.
538 #satlink0 at isa? port 0x300 drq 1
539
540
541 # Pull in optional local configuration
542 include "arch/i386/conf/GENERIC.local"
543
544
545 # Pseudo-Devices
546
547 # disk/mass storage pseudo-devices
548 #pseudo-device ccd 4 # concatenated/striped disk devices
549 #pseudo-device md 1 # memory disk device (ramdisk)
550 pseudo-device vnd 4 # disk-like interface to files
551
552 # network pseudo-devices
553 pseudo-device bpfilter 8 # Berkeley packet filter
554 pseudo-device bridge # simple inter-network bridging
555 pseudo-device ipfilter # IP filter (firewall) and NAT
556 pseudo-device loop # network loopback
557 pseudo-device ppp 2 # Point-to-Point Protocol
558 pseudo-device pppoe # PPP over Ethernet (RFC 2516)
559 #pseudo-device sl 2 # Serial Line IP
560 #pseudo-device strip 2 # Starmode Radio IP (Metricom)
561 pseudo-device tun 2 # network tunneling over tty
562
563 # miscellaneous pseudo-devices
564 pseudo-device pty # pseudo-terminals
565 #pseudo-device tb 1 # tablet line discipline
566 pseudo-device rnd # /dev/random and in-kernel generator
567 #options RND_COM # use "com" randomness as well (BROKEN)
568 pseudo-device clockctl # user control of clock subsystem
569