GENERIC_TINY revision 1.139 1 # $NetBSD: GENERIC_TINY,v 1.139 2014/07/25 15:01:14 dholland 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 makeoptions USE_SSP="no"
13
14 maxusers 8 # estimated number of users
15
16 # CPU-related options.
17 #options VM86 # virtual 8086 emulation
18 #options USER_LDT # user-settable LDT; used by WINE
19
20 # This option allows you to force a serial console at the specified
21 # I/O address. see console(4) for details.
22 #options CONSDEVNAME="\"com\""
23
24 # The following options override the memory sizes passed in from the boot
25 # block. Use them *only* if the boot block is unable to determine the correct
26 # values. Note that the BIOS may *correctly* report less than 640k of base
27 # memory if the extended BIOS data area is located at the top of base memory
28 # (as is the case on most recent systems).
29 #options REALBASEMEM=... # size of base memory
30 #options REALEXTMEM=... # size of extended memory
31
32 # Standard system options
33
34 options INSECURE # disable kernel security levels - X needs this
35
36 options RTC_OFFSET=0 # hardware clock is this many mins. west of GMT
37 #options NTP # NTP phase/frequency locked loop
38
39 #options KTRACE # system call tracing via ktrace(1)
40
41 #options SYSVMSG # System V-like message queues
42 #options SYSVSEM # System V-like semaphores
43 #options SYSVSHM # System V-like memory sharing
44
45 #options USERCONF # userconf(4) support
46 options PIPE_SOCKETPAIR # smaller, but slower pipe(2)
47 #options SYSCTL_INCLUDE_DESCR # Include sysctl descriptions in kernel
48
49 # Diagnostic/debugging support options
50 #options DIAGNOSTIC # inexpensive kernel consistency checks
51 #options DEBUG # expensive debugging checks/support
52 #options KMEMSTATS # kernel memory statistics (vmstat -m)
53 #options DDB # in-kernel debugger
54 #options DDB_ONPANIC=1 # see also sysctl(7): `ddb.onpanic'
55 #options DDB_HISTORY_SIZE=512 # enable history editing in DDB
56 #options KGDB # remote debugger
57 #options KGDB_DEVNAME="\"com\"",KGDB_DEVADDR=0x3f8,KGDB_DEVRATE=9600
58 #makeoptions DEBUG="-g" # compile full symbol table
59
60 # Compatibility options
61 #options COMPAT_NOMID # NetBSD 0.8, 386BSD, and BSDI
62 #options COMPAT_09 # NetBSD 0.9
63 #options COMPAT_10 # NetBSD 1.0
64 #options COMPAT_11 # NetBSD 1.1
65 options COMPAT_12 # NetBSD 1.2, 386BSD, and BSDI
66 options COMPAT_13 # NetBSD 1.3, 386BSD, and BSDI
67 options COMPAT_14 # NetBSD 1.4
68 options COMPAT_15 # NetBSD 1.5
69 options COMPAT_16 # NetBSD 1.6
70 options COMPAT_20 # NetBSD 2.0
71 options COMPAT_30 # NetBSD 3.0 compatibility.
72 options COMPAT_40 # NetBSD 4.0
73 options COMPAT_50 # NetBSD 5.0 compatibility.
74 options COMPAT_60 # NetBSD 6.0 compatibility.
75 options COMPAT_43 # 4.3BSD, 386BSD, and BSDI
76 #options COMPAT_386BSD_MBRPART # recognize old partition ID
77 #options TCP_COMPAT_42 # 4.2BSD TCP/IP bug compat. Not recommended.
78
79 #options COMPAT_SVR4 # binary compatibility with SVR4
80 #options COMPAT_IBCS2 # binary compatibility with SCO and ISC
81 #options COMPAT_LINUX # binary compatibility with Linux
82 #options COMPAT_FREEBSD # binary compatibility with FreeBSD
83 options COMPAT_BSDPTY # /dev/[pt]ty?? ptys.
84
85 # File systems
86 file-system FFS # UFS
87 #file-system EXT2FS # second extended file system (linux)
88 #file-system LFS # log-structured file system
89 #file-system MFS # memory file system
90 file-system NFS # Network File System client
91 file-system CD9660 # ISO 9660 + Rock Ridge file system
92 file-system MSDOSFS # MS-DOS file system
93 #file-system FDESC # /dev/fd
94 file-system KERNFS # /kern
95 #file-system NULLFS # loopback file system
96 #file-system PROCFS # /proc
97 #file-system UMAPFS # NULLFS + uid and gid remapping
98 #file-system UNION # union file system
99 #file-system PTYFS # /dev/pts/N support
100 #file-system TMPFS # Efficient memory file-system
101
102 # File system options
103 #options QUOTA # legacy UFS quotas
104 #options QUOTA2 # new, in-filesystem UFS quotas
105 #options FFS_EI # FFS Endian Independent support
106 #options NFSSERVER # Network File System server
107 options FFS_NO_SNAPSHOT # No FF snapshot support
108 #options EXT2FS_SYSTEM_FLAGS # makes ext2fs file flags (append and
109 # immutable) behave as system flags.
110
111 # Networking options
112 #options GATEWAY # packet forwarding
113 options INET # IP + ICMP + TCP + UDP
114 #options MROUTING # IP multicast routing
115 #options PIM # Protocol Independent Multicast
116 #options NETATALK # AppleTalk networking protocols
117 #options PPP_BSDCOMP # BSD-Compress compression support for PPP
118 #options PPP_DEFLATE # Deflate compression support for PPP
119 #options PPP_FILTER # Active filter support for PPP (requires bpf)
120 #options IPFILTER_LOG # ipmon(8) log support
121 #options IPFILTER_LOOKUP # ippool(8) support
122 options IPFILTER_COMPAT # Compat for IP-Filter
123 #options IPFILTER_DEFAULT_BLOCK # block all packets by default
124 #options TCP_DEBUG # Record last TCP_NDEBUG packets with SO_DEBUG
125
126 #options ALTQ # Manipulate network interfaces' output queues
127 #options ALTQ_BLUE # Stochastic Fair Blue
128 #options ALTQ_CBQ # Class-Based Queueing
129 #options ALTQ_CDNR # Diffserv Traffic Conditioner
130 #options ALTQ_FIFOQ # First-In First-Out Queue
131 #options ALTQ_FLOWVALVE # RED/flow-valve (red-penalty-box)
132 #options ALTQ_HFSC # Hierarchical Fair Service Curve
133 #options ALTQ_LOCALQ # Local queueing discipline
134 #options ALTQ_PRIQ # Priority Queueing
135 #options ALTQ_RED # Random Early Detection
136 #options ALTQ_RIO # RED with IN/OUT
137 #options ALTQ_WFQ # Weighted Fair Queueing
138
139 # These options enable verbose messages for several subsystems.
140 # Warning, these may compile large string tables into the kernel!
141 #options EISAVERBOSE # verbose EISA device autoconfig messages
142 #options PCIVERBOSE # verbose PCI device autoconfig messages
143 #options PCI_CONFIG_DUMP # verbosely dump PCI config space
144 #options PCMCIAVERBOSE # verbose PCMCIA configuration messages
145 #options SCSIVERBOSE # human readable SCSI error messages
146 #options USBVERBOSE # verbose USB device autoconfig messages
147
148 #options NFS_BOOT_BOOTP,NFS_BOOT_BOOTPARAM
149
150 # Kernel root file system and dump configuration.
151 config netbsd root on ? type ?
152 #config netbsd root on sd0a type ffs
153 #config netbsd root on ? type nfs
154
155 #
156 # wscons options
157 #
158 # builtin terminal emulations
159 #options WSEMUL_SUN # sun terminal emulation
160 options WSEMUL_VT100 # VT100 / VT220 emulation
161 # customization of console and kernel output - see dev/wscons/wsdisplayvar.h
162 #options WSDISPLAY_CUSTOM_OUTPUT # color customization from wsconsctl(8)
163 #options WS_DEFAULT_FG=WSCOL_WHITE
164 #options WS_DEFAULT_BG=WSCOL_BLACK
165 #options WS_DEFAULT_COLATTR="(0)"
166 #options WS_DEFAULT_MONOATTR="(0)"
167 options WS_KERNEL_FG=WSCOL_GREEN
168 #options WS_KERNEL_BG=WSCOL_BLACK
169 #options WS_KERNEL_COLATTR=""
170 #options WS_KERNEL_MONOATTR=""
171 # customization of console border color
172 #options WSDISPLAY_CUSTOM_BORDER # border customization from wsconsctl(8)
173 #options WSDISPLAY_BORDER_COLOR=WSCOL_BLUE # default color
174 # compatibility to other console drivers
175 options WSDISPLAY_COMPAT_PCVT # emulate some ioctls
176 options WSDISPLAY_COMPAT_SYSCONS # emulate some ioctls
177 options WSDISPLAY_COMPAT_USL # wsconscfg VT handling
178 options WSDISPLAY_COMPAT_RAWKBD # can get raw scancodes
179 # see dev/pckbport/wskbdmap_mfii.c for implemented layouts
180 #options PCKBD_LAYOUT="(KB_DE | KB_NODEAD)" # for pckbd driver
181 #options UKBD_LAYOUT="(KB_DE | KB_NODEAD)" # for ukbd driver
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 #apm0 at mainbus0 # Advanced power management
192
193
194 # Basic Bus Support
195
196 # PCI bus support
197 #pci* at mainbus? bus ?
198 #pci* at pchb? bus ?
199 #pci* at ppb? bus ?
200
201 # PCI bridges
202 #pchb* at pci? dev ? function ? # PCI-Host bridges
203 #pceb* at pci? dev ? function ? # PCI-EISA bridges
204 #pcib* at pci? dev ? function ? # PCI-ISA bridges
205 #ichlpcib* at pci? dev ? function ? # Intel ICH PCI-ISA w/ watchdog and
206 # SpeedStep support
207 #ppb* at pci? dev ? function ? # PCI-PCI bridges
208 # XXX 'puc's aren't really bridges, but there's no better place for them here
209 #puc* at pci? dev ? function ? # PCI "universal" comm. cards
210
211 # EISA bus support
212 #eisa0 at mainbus?
213 #eisa0 at pceb?
214
215 # ISA bus support
216 isa0 at mainbus?
217 #isa0 at pceb?
218 #isa0 at pcib?
219 #isa0 at ichlpcib?
220
221 # PCMCIA bus support
222 pcmcia* at pcic? controller ? socket ?
223
224 # ISA PCMCIA controllers
225 pcic0 at isa? port 0x3e0 iomem 0xd0000 iosiz 0x4000
226 pcic1 at isa? port 0x3e2 iomem 0xd4000 iosiz 0x4000
227
228 # ISA Plug-and-Play bus support
229 #isapnp0 at isa?
230
231 # ISA Plug-and-Play PCMCIA controllers
232 #pcic* at isapnp?
233
234 # Console Devices
235
236 # wscons
237 pckbc0 at isa? # PC keyboard controller
238 pckbd* at pckbc? # PC keyboard
239 #pms* at pckbc? # PS/2 mouse for wsmouse
240 vga0 at isa?
241 #vga* at pci? dev ? function ?
242 pcdisplay0 at isa? # CGA, MDA, EGA, HGA
243 wsdisplay* at vga? console ?
244 wsdisplay* at pcdisplay? console ?
245 wskbd* at pckbd? console ?
246 #wsmouse* at pms? mux 0
247
248
249 #attimer0 at isa?
250 #pcppi0 at isa?
251 #sysbeep0 at pcppi?
252
253 # Serial Devices
254
255 # PCI serial interfaces
256 #com* at puc? port ? # 16x50s on "universal" comm boards
257 #cy* at pci? dev ? function ? # Cyclades Cyclom-Y serial boards
258
259 # ISA Plug-and-Play serial interfaces
260 #com* at isapnp? # Modems and serial boards
261
262 # PCMCIA serial interfaces
263 com* at pcmcia? function ? # Modems and serial cards
264
265 # ISA serial interfaces
266 #options COM_HAYESP # adds Hayes ESP serial board support
267 com0 at isa? port 0x3f8 irq 4 # Standard PC serial ports
268 com1 at isa? port 0x2f8 irq 3
269 com2 at isa? port 0x3e8 irq 5
270 #com3 at isa? port 0x2e8 irq 9
271 #ast0 at isa? port 0x1a0 irq 5 # AST 4-port serial cards
272 #com* at ast? slave ?
273 #boca0 at isa? port 0x100 irq 5 # BOCA 8-port serial cards
274 #com* at boca? slave ?
275 #rtfps0 at isa? port 0x1230 irq 10 # RT 4-port serial cards
276 #com* at rtfps? slave ?
277 #cy0 at isa? iomem 0xd4000 irq 12 # Cyclades serial cards
278
279
280 # Parallel Printer Interfaces
281
282 # PCI parallel printer interfaces
283 #lpt* at puc? port ? # || ports on "universal" comm boards
284
285 # ISA parallel printer interfaces
286 lpt0 at isa? port 0x378 irq 7 # standard PC parallel ports
287 #lpt1 at isa? port 0x278
288 #lpt2 at isa? port 0x3bc
289
290
291 # SCSI Controllers and Devices
292
293 # PCI SCSI controllers
294 #ahc* at pci? dev ? function ? # Adaptec [23]94x, aic78x0 SCSI
295 #dpt* at pci? dev ? function ? # DPT SmartCache/SmartRAID
296 #bha* at pci? dev ? function ? # BusLogic 9xx SCSI
297 #isp* at pci? dev ? function ? # Qlogic ISP [12]0x0 SCSI/FibreChannel
298 #siop* at pci? dev ? function ? # NCR 53c8xx SCSI
299 #esiop* at pci? dev ? function ? # NCR 53c875 SCSI and newer
300 #options SIOP_SYMLED # drive the act. LED in software
301
302 # EISA SCSI controllers
303 #ahb* at eisa? slot ? # Adaptec 174[02] SCSI
304 #ahc* at eisa? slot ? # Adaptec 274x, aic7770 SCSI
305 #bha* at eisa? slot ? # BusLogic 7xx SCSI
306 #dpt* at eisa? slot ? # DPT SmartCache/SmartRAID
307 #uha* at eisa? slot ? # UltraStor 24f SCSI
308
309 # PCMCIA SCSI controllers
310 #aic* at pcmcia? function ? # Adaptec APA-1460 SCSI
311
312 # ISA Plug-and-Play SCSI controllers
313 #aic* at isapnp? # Adaptec AHA-1520B
314
315 # ISA SCSI controllers
316 #aha0 at isa? port 0x330 irq ? drq ? # Adaptec 154[02] SCSI
317 #aha1 at isa? port 0x334 irq ? drq ?
318 #ahc0 at isa? port ? irq ? # Adaptec 284x SCSI
319 #aic0 at isa? port 0x340 irq 11 # Adaptec 152[02] SCSI
320 #bha0 at isa? port 0x330 irq ? drq ? # BusLogic [457]4X SCSI
321 #bha1 at isa? port 0x334 irq ? drq ?
322 #sea0 at isa? iomem 0xc8000 irq 5 # Seagate/Future Domain SCSI
323 #uha0 at isa? port 0x330 irq ? drq ? # UltraStor [13]4f SCSI
324 #uha1 at isa? port 0x340 irq ? drq ?
325 #wds0 at isa? port 0x350 irq 15 drq 6 # WD7000 and TMC-7000 controllers
326 #wds1 at isa? port 0x358 irq 11 drq 5
327
328 # SCSI bus support
329 #scsibus* at scsi?
330
331 # SCSI devices
332 #sd* at scsibus? target ? lun ? # SCSI disk drives
333 #st* at scsibus? target ? lun ? # SCSI tape drives
334 #cd* at scsibus? target ? lun ? # SCSI CD-ROM drives
335 #ch* at scsibus? target ? lun ? # SCSI autochangers
336 #ss* at scsibus? target ? lun ? # SCSI scanners
337 #uk* at scsibus? target ? lun ? # SCSI unknown
338
339
340 # IDE and related devices
341
342 # ISA Plug-and-Play IDE controllers
343 #wdc* at isapnp?
344
345 # PCMCIA IDE controllers
346 wdc* at pcmcia? function ?
347
348 # ISA IDE controllers
349 wdc0 at isa? port 0x1f0 irq 14 # ST506, ESDI, and IDE controllers
350 wdc1 at isa? port 0x170 irq 15
351
352 # ATA (IDE) bus support
353 atabus* at ata?
354 #options ATADEBUG
355
356 # IDE drives
357 wd* at atabus? drive ? # the drives themselves
358
359 # ATAPI bus support
360 atapibus* at atapi?
361
362 # ATAPI devices
363 cd* at atapibus? drive ? # ATAPI CD-ROM drives
364 sd* at atapibus? drive ? # ATAPI disk drives
365
366
367 # Miscellaneous mass storage devices
368
369 # ISA floppy
370 fdc0 at isa? port 0x3f0 irq 6 drq 2 # standard PC floppy controllers
371 #fdc1 at isa? port 0x370 irq ? drq ?
372 fd* at fdc? drive ? # the drives themselves
373 # some machines need you to do this instead of fd*
374 #fd0 at fdc0 drive 0
375
376 # ISA CD-ROM devices
377 #mcd0 at isa? port 0x300 irq 10 # Mitsumi CD-ROM drives
378
379 # ISA tape devices
380 # note: the wt driver conflicts unpleasantly with SMC boards at the
381 # same I/O address. The probe reprograms their EEPROMs. Don't
382 # uncomment it unless you are actually using it.
383 #wt0 at isa? port 0x308 irq 5 drq 1 # Archive and Wangtek QIC tape drives
384
385
386 # Network Interfaces
387
388 # PCI network interfaces
389 #en* at pci? dev ? function ? # ENI/Adaptec ATM
390 #ep* at pci? dev ? function ? # 3Com 3c59x/3c90x Ethernet
391 #epic* at pci? dev ? function ? # SMC EPIC/100 Ethernet
392 #esh* at pci? dev ? function ? # Essential HIPPI card
393 #fpa* at pci? dev ? function ? # DEC DEFPA FDDI
394 #fxp* at pci? dev ? function ? # Intel EtherExpress PRO 10+/100B
395 #le* at pci? dev ? function ? # PCnet-PCI Ethernet
396 #ne* at pci? dev ? function ? # NE2000-compatible Ethernet
397 #tl* at pci? dev ? function ? # ThunderLAN-based Ethernet
398 #tlp* at pci? dev ? function ? # DECchip 21x4x and clones
399
400 # EISA network interfaces
401 #ep* at eisa? slot ? # 3Com 3c579 Ethernet
402 #fea* at eisa? slot ? # DEC DEFEA FDDI
403
404 # ISA Plug-and-Play network interfaces
405 #ep* at isapnp? # 3Com 3c509 Ethernet
406 #ne* at isapnp? # NE2000-compatible Ethernet
407
408 # PCMCIA network interfaces
409 ep* at pcmcia? function ? # 3Com 3c589 and 3c562 Ethernet
410 mbe* at pcmcia? function ? # MB8696x based Ethernet
411 ne* at pcmcia? function ? # NE2000-compatible Ethernet
412 sm* at pcmcia? function ? # Megahertz Ethernet
413
414 # ISA network interfaces
415 ate0 at isa? port 0x2a0 irq ? # AT1700
416 ec0 at isa? port 0x250 iomem 0xd8000 irq 9 # 3Com 3c503 Ethernet
417 eg0 at isa? port 0x280 irq 9 # 3c505 Ethernet cards
418 el0 at isa? port 0x300 irq 9 # 3c501 Ethernet cards
419 ep0 at isa? port ? irq ? # 3c509 Ethernet cards
420 ef0 at isa? port 0x360 iomem 0xd0000 irq 7 # 3c507
421 ai0 at isa? port 0x360 iomem 0xd0000 irq 7 # StarLAN
422 fmv0 at isa? port 0x2a0 irq ? # FMV-180 series
423 ix0 at isa? port 0x300 irq 10 # EtherExpress/16
424 iy0 at isa? port 0x360 irq ? # EtherExpress PRO 10 ISA
425 lc0 at isa? port 0x320 iomem ? irq ? # DEC EtherWORKS III (LEMAC)
426 #depca0 at isa? port 0x300 iomem 0xc8000 iosiz 0x8000 irq 5 # DEPCA
427 #le* at depca?
428 nele0 at isa? port 0x320 irq 9 drq 7 # NE2100
429 le* at nele?
430 bicc0 at isa? port 0x320 irq 10 drq 7 # BICC IsoLan
431 le* at bicc?
432 ne0 at isa? port 0x280 irq 9 # NE[12]000 Ethernet cards
433 ne1 at isa? port 0x300 irq 10
434 sm0 at isa? port 0x300 irq 10 # SMC91C9x Ethernet
435 we0 at isa? port 0x280 iomem 0xd0000 irq 9 # WD/SMC Ethernet
436 we1 at isa? port 0x300 iomem 0xcc000 irq 10
437
438 # MII bus support
439 #mii* at tl?
440
441 # MII PHY network interfaces
442 #tlphy* at mii? dev ? # ThunderLAN PHYs
443 #nsphy* at mii? dev ? # NS and compatible PHYs
444 #ukphy* at mii? phy ? # generic unknown PHYs
445
446
447 # USB Controller and Devices
448
449 # PCI USB controllers
450 #uhci* at pci? # Universal Host Controller (Intel)
451 #ohci* at pci? # Open Host Controller
452
453 # USB bus support
454 #usb* at uhci?
455 #usb* at ohci?
456
457 # USB Hubs
458 #uhub* at usb?
459 #uhub* at uhub? port ?
460
461 # USB Mice
462 #ums* at uhub? port ?
463
464 # USB Keyboards
465 #ukbd* at uhub? port ?
466
467 # USB Generic HID devices
468 #uhid* at uhub? port ?
469
470 # USB Printer
471 #ulpt* at uhub? port ?
472
473 # USB Mass Storage
474 #umass* at uhub? port ? configuration ? interface ?
475 #wd* at umass?
476
477 # USB Ethernet adapters
478 #aue* at uhub? port ? # ADMtek AN986 Pegasus based adapters
479 #axe* at uhub? port ? # ASIX AX88172 based adapters
480 #cue* at uhub? port ? # CATC USB-EL1201A based adapters
481 #kue* at uhub? port ? # Kawasaki LSI KL5KUSB101B based adapters
482 #url* at uhub? port ? # Realtek RTL8150L based adapters
483
484 # Y@P firmware loader
485 #uyap* at uhub? port ?
486
487 # USB Generic driver
488 #ugen* at uhub? port ?
489
490 # Audio Devices
491
492 # PCI audio devices
493 #eap* at pci? dev ? function ? # Ensoniq AudioPCI
494
495 # ISA Plug-and-Play audio devices
496 #guspnp* at isapnp? # Gravis Ultra Sound PnP audio
497 #sb* at isapnp? # SoundBlaster-compatible audio
498 #ym* at isapnp? # Yamaha OPL3-SA[23] audio
499
500 # ISA audio devices
501 #aria0 at isa? port 0x290 irq 10 # Aria
502 #gus0 at isa? port 0x220 irq 7 drq 1 drq2 6 # Gravis Ultra Sound
503 #pas0 at isa? port 0x220 irq 7 drq 1 # ProAudio Spectrum
504 #sb0 at isa? port 0x220 irq 5 drq 1 drq2 5 # SoundBlaster
505 #wss0 at isa? port 0x530 irq 10 drq 0 drq2 1 # Windows Sound System
506
507 # Audio support
508 #audio* at audiobus?
509
510 # The spkr driver provides a simple tone interface to the built in speaker.
511 #spkr0 at pcppi? # PC speaker
512
513
514 # Joysticks
515
516 # ISA Plug-and-Play joysticks
517 #joy* at isapnp? # Game ports (usually on audio cards)
518
519 # ISA joysticks. Probe is a little strange; add only if you have one.
520 #joy0 at isa? port 0x201
521
522
523 # Miscellaneous Devices
524
525 # Planetconnect Satellite receiver driver.
526 #satlink0 at isa? port 0x300 drq 1
527
528
529 # Pull in optional local configuration
530 cinclude "arch/i386/conf/GENERIC.local"
531
532
533 # Pseudo-Devices
534
535 # disk/mass storage pseudo-devices
536 #pseudo-device ccd # concatenated/striped disk devices
537 pseudo-device fss # file system snapshot device
538 #pseudo-device md # memory disk device (ramdisk)
539 pseudo-device vnd # disk-like interface to files
540 #options VND_COMPRESSION # compressed vnd(4)
541
542 # network pseudo-devices
543 pseudo-device bpfilter # Berkeley packet filter
544 pseudo-device bridge # simple inter-network bridging
545 pseudo-device ipfilter # IP filter (firewall) and NAT
546 pseudo-device loop # network loopback
547 pseudo-device ppp # Point-to-Point Protocol
548 pseudo-device pppoe # PPP over Ethernet (RFC 2516)
549 #pseudo-device sl # Serial Line IP
550 #pseudo-device strip # Starmode Radio IP (Metricom)
551 pseudo-device tun # network tunneling over tty
552 #pseudo-device tap # virtual Ethernet
553
554 # miscellaneous pseudo-devices
555 pseudo-device pty # pseudo-terminals
556 #options RND_COM # use "com" randomness as well (BROKEN)
557 pseudo-device clockctl # user control of clock subsystem
558