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GENERIC revision 1.180
      1 #	$NetBSD: GENERIC,v 1.180 1998/08/31 17:58:46 thorpej Exp $
      2 #
      3 #	GENERIC -- everything that's currently supported
      4 #
      5 
      6 include "arch/i386/conf/std.i386"
      7 
      8 maxusers	32		# estimated number of users
      9 
     10 # CPU support.  At least one is REQUIRED.
     11 options 	I386_CPU
     12 options 	I486_CPU
     13 options 	I586_CPU
     14 options 	I686_CPU
     15 
     16 # CPU-related options.
     17 options 	MATH_EMULATE	# floating point emulation
     18 #options 	VM86		# virtual 8086 emulation
     19 options 	USER_LDT	# user-settable LDT; used by WINE
     20 # eliminate delay no-ops in I/O; recommended on all but very old machines
     21 #options 	DUMMY_NOPS
     22 
     23 # Misc. i386-specific options
     24 options 	XSERVER		# X server support in console drivers
     25 #options 	XSERVER_DDB	# PF12 gets you into DDB when X is running
     26 
     27 # This option allows you to force a serial console at the specified
     28 # I/O address.   see console(4) for details.
     29 #options 	"CONSDEVNAME=\"com\"",CONADDR=0x2f8,CONSPEED=57600
     30 #	you don't want the option below ON iff you are using the
     31 #	serial debugger option of the new boot strap code.
     32 #options	CONS_OVERRIDE	# Always use above! independent of boot info
     33 
     34 # The following options override the memory sizes passed in from the boot
     35 # block.  Use them *only* if the boot block is unable to determine the correct
     36 # values.  Note that the BIOS may *correctly* report less than 640k of base
     37 # memory if the extended BIOS data area is located at the top of base memory
     38 # (as is the case on most recent systems).
     39 #options 	REALBASEMEM=...	# size of base memory
     40 #options 	REALEXTMEM=...	# size of extended memory
     41 
     42 # Standard system options
     43 
     44 options 	UCONSOLE	# users can use TIOCCONS (for xconsole)
     45 options 	INSECURE	# disable kernel security levels
     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=1024	# 1024 pages is the default
     56 
     57 options 	LKM		# loadable kernel modules
     58 
     59 # Diagnostic/debugging support options
     60 options 	DIAGNOSTIC	# cheap kernel consistency checks
     61 #options 	DEBUG		# expensive debugging checks/support
     62 #options 	KMEMSTATS	# kernel memory statistics (vmstat -m)
     63 options 	DDB		# in-kernel debugger
     64 #options 	DDB_HISTORY_SIZE=100	# enable history editing in DDB
     65 #options 	KGDB		# remote debugger
     66 #options 	"KGDB_DEVNAME=\"com\"",KGDBADDR=0x3f8,KGDBRATE=9600
     67 #makeoptions	DEBUG="-g"	# compile full symbol table
     68 
     69 # Compatibility options
     70 options 	COMPAT_NOMID	# compatibility with 386BSD, BSDI, NetBSD 0.8,
     71 options 	COMPAT_09	# NetBSD 0.9,
     72 options 	COMPAT_10	# NetBSD 1.0,
     73 options 	COMPAT_11	# NetBSD 1.1,
     74 options 	COMPAT_12	# NetBSD 1.2,
     75 options 	COMPAT_13	# NetBSD 1.3,
     76 options 	COMPAT_43	# and 4.3BSD
     77 options 	COMPAT_386BSD_MBRPART # recognize old partition ID
     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 
     84 # Executable format options
     85 options 	EXEC_ELF32	# 32-bit ELF executables (SVR4, Linux)
     86 
     87 # File systems
     88 file-system 	FFS		# UFS
     89 file-system 	EXT2FS		# second extended file system (linux)
     90 file-system 	LFS		# log-structured file system
     91 file-system 	MFS		# memory file system
     92 file-system 	NFS		# Network File System client
     93 file-system 	CD9660		# ISO 9660 + Rock Ridge file system
     94 file-system 	MSDOSFS		# MS-DOS file system
     95 file-system 	FDESC		# /dev/fd
     96 file-system 	KERNFS		# /kern
     97 file-system 	NULLFS		# loopback file system
     98 file-system 	PORTAL		# portal filesystem (still experimental)
     99 file-system 	PROCFS		# /proc
    100 file-system 	UMAPFS		# NULLFS + uid and gid remapping
    101 file-system 	UNION		# union file system
    102 
    103 # File system options
    104 options 	QUOTA		# UFS quotas
    105 #options 	FFS_EI		# FFS Endian Independant support
    106 options 	NFSSERVER	# Network File System server
    107 #options 	EXT2FS_SYSTEM_FLAGS # makes ext2fs file flags (append and
    108 				# immutable) behave as system flags.
    109 
    110 # Networking options
    111 #options 	GATEWAY		# packet forwarding
    112 options 	INET		# IP + ICMP + TCP + UDP
    113 #options 	MROUTING	# IP multicast routing
    114 options 	NS		# XNS
    115 #options 	NSIP		# XNS tunneling over IP
    116 options 	ISO,TPIP	# OSI
    117 options 	EON		# OSI tunneling over IP
    118 options 	CCITT,LLC,HDLC	# X.25
    119 options 	NETATALK	# AppleTalk networking protocols
    120 #options 	PPP_BSDCOMP	# BSD-Compress compression support for PPP
    121 #options 	PPP_DEFLATE	# Deflate compression support for PPP
    122 #options 	PPP_FILTER	# Active filter support for PPP (requires bpf)
    123 #options 	PFIL_HOOKS	# pfil(9) packet filter hooks
    124 #options 	IPFILTER_LOG	# ipmon(8) log support
    125 
    126 # Compatibility with 4.2BSD implementation of TCP/IP.  Not recommended.
    127 #options 	TCP_COMPAT_42
    128 
    129 # These options enable verbose messages for several subsystems.
    130 # Warning, these may compile large string tables into the kernel!
    131 options 	EISAVERBOSE	# verbose EISA device autoconfig messages
    132 options 	PCIVERBOSE	# verbose PCI device autoconfig messages
    133 #options 	PCMCIAVERBOSE	# verbose PCMCIA configuration messages
    134 options 	SCSIVERBOSE	# human readable SCSI error messages
    135 options 	USBVERBOSE	# verbose USB device autoconfig messages
    136 
    137 options 	NFS_BOOT_BOOTP,NFS_BOOT_BOOTPARAM
    138 
    139 # Kernel root file system and dump configuration.
    140 config		netbsd	root on ? type ?
    141 #config		netbsd	root on sd0a type ffs
    142 #config		netbsd	root on ? type nfs
    143 
    144 #
    145 # Device configuration
    146 #
    147 
    148 mainbus0 at root
    149 
    150 #apm0	at mainbus0			# Advanced power management
    151 
    152 
    153 # Basic Bus Support
    154 
    155 # PCI bus support
    156 pci*	at mainbus? bus ?
    157 pci*	at pchb? bus ?
    158 pci*	at ppb? bus ?
    159 
    160 # PCI bridges
    161 pchb*	at pci? dev ? function ?	# PCI-Host bridges
    162 pceb*	at pci? dev ? function ?	# PCI-EISA bridges
    163 pcib*	at pci? dev ? function ?	# PCI-ISA bridges
    164 ppb*	at pci? dev ? function ?	# PCI-PCI bridges
    165 # XXX 'puc's aren't really bridges, but there's no better place for them here
    166 puc*	at pci? dev ? function ?	# PCI "universal" comm. cards
    167 
    168 # EISA bus support
    169 eisa*	at mainbus?
    170 eisa*	at pceb?
    171 
    172 # ISA bus support
    173 isa*	at mainbus?
    174 isa*	at pceb?
    175 isa*	at pcib?
    176 
    177 # PCMCIA bus support
    178 pcmcia*	at pcic? controller ? socket ?
    179 
    180 # ISA PCMCIA controllers
    181 pcic0	at isa? port 0x3e0 iomem 0xd0000 iosiz 0x4000
    182 pcic1	at isa? port 0x3e2 iomem 0xd4000 iosiz 0x4000
    183 
    184 # ISA Plug-and-Play bus support
    185 isapnp0	at isa?
    186 
    187 # ISA Plug-and-Play PCMCIA controllers
    188 pcic*	at isapnp?
    189 
    190 # Coprocessor Support
    191 
    192 # Math Coprocessor support
    193 npx0	at isa? port 0xf0 irq 13	# x86 math coprocessor
    194 
    195 
    196 # Console Devices
    197 
    198 # ISA console.  You can only configure one of these!
    199 pc0	at isa? port 0x60 irq 1		# pccons generic PC console driver
    200 #vt0	at isa? port 0x60 irq 1		# PCVT console driver
    201 
    202 # Keyboard layout configuration for pccons
    203 #options 	FRENCH_KBD
    204 #options 	FINNISH_KBD
    205 #options 	GERMAN_KBD
    206 #options 	NORWEGIAN_KBD
    207 
    208 pcppi0	at isa?
    209 sysbeep0	at pcppi?
    210 
    211 # Serial Devices
    212 
    213 # PCI serial interfaces
    214 com*	at puc? port ?			# 16x450s on "universal" comm boards
    215 cy*	at pci? dev ? function ?	# Cyclades Cyclom-Y serial boards
    216 
    217 # ISA Plug-and-Play serial interfaces
    218 com*	at isapnp?			# Modems and serial boards
    219 
    220 # PCMCIA serial interfaces
    221 com*	at pcmcia? function ?		# Modems and serial cards
    222 
    223 # ISA serial interfaces
    224 #options 	COM_HAYESP		# adds Hayes ESP serial board support
    225 com0	at isa? port 0x3f8 irq 4	# Standard PC serial ports
    226 com1	at isa? port 0x2f8 irq 3
    227 com2	at isa? port 0x3e8 irq 5
    228 #com3	at isa? port 0x2e8 irq 9
    229 #ast0	at isa? port 0x1a0 irq 5	# AST 4-port serial cards
    230 #com*	at ast? slave ?
    231 #boca0	at isa? port 0x100 irq 5	# BOCA 8-port serial cards
    232 #com*	at boca? slave ?
    233 #rtfps0	at isa? port 0x1230 irq 10	# RT 4-port serial cards
    234 #com*	at rtfps? slave ?
    235 #cy0	at isa? iomem 0xd4000 irq 12	# Cyclades serial cards
    236 
    237 
    238 # Parallel Printer Interfaces
    239 
    240 # PCI parallel printer interfaces
    241 lpt*	at puc? port ?			# || ports on "universal" comm boards
    242 
    243 # ISA parallel printer interfaces
    244 lpt0	at isa? port 0x378 irq 7	# standard PC parallel ports
    245 lpt1	at isa? port 0x278
    246 lpt2	at isa? port 0x3bc
    247 
    248 
    249 # SCSI Controllers and Devices
    250 
    251 # PCI SCSI controllers
    252 adv*	at pci? dev ? function ?	# AdvanSys 1200[A,B], ULTRA SCSI
    253 ahc*	at pci? dev ? function ?	# Adaptec [23]94x, aic78x0 SCSI
    254 bha*	at pci? dev ? function ?	# BusLogic 9xx SCSI
    255 isp*	at pci? dev ? function ?	# Qlogic ISP [12]0x0 SCSI/FibreChannel
    256 ncr*	at pci? dev ? function ?	# NCR 53c8xx SCSI
    257 
    258 # EISA SCSI controllers
    259 ahb*	at eisa? slot ?			# Adaptec 174[02] SCSI
    260 ahc*	at eisa? slot ?			# Adaptec 274x, aic7770 SCSI
    261 bha*	at eisa? slot ?			# BusLogic 7xx SCSI
    262 uha*	at eisa? slot ?			# UltraStor 24f SCSI
    263 
    264 # PCMCIA SCSI controllers
    265 aic*	at pcmcia? function ?		# Adaptec APA-1460 SCSI
    266 
    267 # ISA Plug-and-Play SCSI controllers
    268 aic*	at isapnp?			# Adaptec AHA-1520B
    269 
    270 # ISA SCSI controllers
    271 aha0	at isa? port 0x330 irq ? drq ?	# Adaptec 154[02] SCSI
    272 aha1	at isa? port 0x334 irq ? drq ?
    273 ahc0	at isa? port ? irq ?		# Adaptec 284x SCSI
    274 aic0	at isa? port 0x340 irq 11	# Adaptec 152[02] SCSI
    275 bha0	at isa? port 0x330 irq ? drq ?	# BusLogic [457]4X SCSI
    276 bha1	at isa? port 0x334 irq ? drq ?
    277 sea0	at isa? iomem 0xc8000 irq 5	# Seagate/Future Domain SCSI
    278 uha0	at isa? port 0x330 irq ? drq ?	# UltraStor [13]4f SCSI
    279 uha1	at isa? port 0x340 irq ? drq ?
    280 wds0	at isa? port 0x350 irq 15 drq 6	# WD7000 and TMC-7000 controllers
    281 wds1	at isa? port 0x358 irq 11 drq 5
    282 
    283 # SCSI bus support
    284 scsibus* at adv?
    285 scsibus* at aha?
    286 scsibus* at ahb?
    287 scsibus* at ahc?
    288 scsibus* at aic?
    289 scsibus* at bha?
    290 scsibus* at isp?
    291 scsibus* at ncr?
    292 scsibus* at sea?
    293 scsibus* at uha?
    294 scsibus* at wds?
    295 
    296 # SCSI devices
    297 sd*	at scsibus? target ? lun ?	# SCSI disk drives
    298 st*	at scsibus? target ? lun ?	# SCSI tape drives
    299 cd*	at scsibus? target ? lun ?	# SCSI CD-ROM drives
    300 ch*	at scsibus? target ? lun ?	# SCSI autochangers
    301 ss*	at scsibus? target ? lun ?	# SCSI scanners
    302 uk*	at scsibus? target ? lun ?	# SCSI unknown
    303 
    304 
    305 # IDE and Related Devices
    306 
    307 # ISA Plug-and-Play IDE controllers
    308 wdc*	at isapnp?
    309 
    310 # PCMCIA IDE controllers
    311 wdc*	at pcmcia? function ?
    312 
    313 # ISA IDE controllers
    314 wdc0	at isa? port 0x1f0 irq 14	# ST506, ESDI, and IDE controllers
    315 wdc1	at isa? port 0x170 irq 15
    316 
    317 # IDE drives
    318 wd*	at wdc? drive ?			# the drives themselves
    319 
    320 # ATAPI bus support
    321 atapibus* at wdc?
    322 
    323 # ATAPI devices
    324 cd*	at atapibus? drive ?		# ATAPI CD-ROM drives
    325 sd*	at atapibus? drive ?		# ATAPI disk drives
    326 
    327 
    328 # Miscellaneous mass storage devices
    329 
    330 # ISA floppy
    331 fdc0	at isa? port 0x3f0 irq 6 drq 2	# standard PC floppy controllers
    332 #fdc1	at isa? port 0x370 irq ? drq ?
    333 fd*	at fdc? drive ?			# the drives themselves
    334 # some machines need you to do this instead of fd*
    335 #fd0	at fdc0 drive 0
    336 
    337 # ISA CD-ROM devices
    338 #mcd0	at isa? port 0x300 irq 10	# Mitsumi CD-ROM drives
    339 
    340 # ISA tape devices
    341 # note: the wt driver conflicts unpleasantly with SMC boards at the
    342 # same I/O address. The probe reprograms their EEPROMs. Don't
    343 # uncomment it unless you are actually using it.
    344 #wt0	at isa? port 0x308 irq 5 drq 1	# Archive and Wangtek QIC tape drives
    345 
    346 
    347 # Network Interfaces
    348 
    349 # PCI network interfaces
    350 de*	at pci? dev ? function ?	# DEC 21x4x-based Ethernet
    351 en*	at pci? dev ? function ?	# ENI/Adaptec ATM
    352 ep*	at pci? dev ? function ?	# 3Com 3c59x/3c90x Ethernet
    353 epic*	at pci? dev ? function ?	# SMC EPIC/100 Ethernet
    354 esh*	at pci? dev ? function ?	# Essential HIPPI card
    355 fpa*	at pci? dev ? function ?	# DEC DEFPA FDDI
    356 fxp*	at pci? dev ? function ?	# Intel EtherExpress PRO 10+/100B
    357 le*	at pci? dev ? function ?	# PCnet-PCI Ethernet
    358 ne*	at pci? dev ? function ?	# NE2000-compatible Ethernet
    359 tl*	at pci? dev ? function ?	# ThunderLAN-based Ethernet
    360 
    361 # EISA network interfaces
    362 ep*	at eisa? slot ?			# 3Com 3c579 Ethernet
    363 fea*	at eisa? slot ?			# DEC DEFEA FDDI
    364 
    365 # ISA Plug-and-Play network interfaces
    366 ep*	at isapnp?			# 3Com 3c509 Ethernet
    367 ne*	at isapnp?			# NE2000-compatible Ethernet
    368 
    369 # PCMCIA network interfaces
    370 ep*	at pcmcia? function ?		# 3Com 3c589 and 3c562 Ethernet
    371 mbe*	at pcmcia? function ?		# MB8696x based Ethernet
    372 ne*	at pcmcia? function ?		# NE2000-compatible Ethernet
    373 sm*	at pcmcia? function ?		# Megahertz Ethernet
    374 
    375 # ISA network interfaces
    376 ate0	at isa? port 0x2a0 irq ?		# AT1700
    377 cs0	at isa? port 0x300 iomem ? irq ? drq ?	# CS8900 Ethernet
    378 ec0	at isa? port 0x250 iomem 0xd8000 irq 9	# 3Com 3c503 Ethernet
    379 eg0	at isa? port 0x280 irq 9		# 3C505 ethernet cards
    380 el0	at isa? port 0x300 irq 9		# 3C501 ethernet cards
    381 ep0	at isa? port ? irq ?			# 3C509 ethernet cards
    382 ef0	at isa? port 0x360 iomem 0xd0000 irq 7	# 3C507
    383 ai0	at isa? port 0x360 iomem 0xd0000 irq 7	# StarLAN
    384 fmv0	at isa? port 0x2a0 irq ?		# FMV-180 series
    385 ix0	at isa? port 0x300 irq 10		# EtherExpress/16
    386 iy0	at isa? port 0x360 irq ?		# EtherExpress PRO 10 ISA
    387 lc0	at isa? port 0x320 iomem ? irq ?	# DEC EtherWORKS III (LEMAC)
    388 #depca0	at isa? port 0x300 iomem 0xc8000 iosiz 0x8000 irq 5	# DEPCA
    389 #le*	at depca?
    390 nele0	at isa? port 0x320 irq 9 drq 7		# NE2100
    391 le*	at nele?
    392 bicc0	at isa? port 0x320 irq 10 drq 7		# BICC IsoLan
    393 le*	at bicc?
    394 ne0	at isa? port 0x280 irq 9		# NE[12]000 ethernet cards
    395 ne1	at isa? port 0x300 irq 10
    396 sm0	at isa? port 0x300 irq 10		# SMC91C9x Ethernet
    397 we0	at isa? port 0x280 iomem 0xd0000 irq 9	# WD/SMC Ethernet
    398 we1	at isa? port 0x300 iomem 0xcc000 irq 10
    399 
    400 # MII/PHY support
    401 inphy*	at mii? phy ?			# Intel 82555 PHYs
    402 nsphy*	at mii? phy ?			# NS83840 PHYs
    403 qsphy*	at mii? phy ?			# Quality Semiconductor QS6612 PHYs
    404 tlphy*	at mii? phy ?			# ThunderLAN PHYs
    405 
    406 # USB Controller and Devices
    407 
    408 # PCI USB controllers
    409 uhci*	at pci?				# Universal Host Controller (Intel)
    410 ohci*	at pci?				# Open Host Controller
    411 
    412 # USB bus support
    413 usb*	at uhci?
    414 usb*	at ohci?
    415 
    416 # USB Hubs
    417 uhub*	at usb?
    418 uhub*	at uhub? port ?
    419 
    420 # USB Mice
    421 ums*	at uhub? port ?
    422 wsmouse*	at ums?
    423 
    424 # USB Keyboards
    425 ukbd*	at uhub? port ?
    426 wskbd*	at ukbd? console ?
    427 
    428 # USB Generic HID devices
    429 uhid*	at uhub? port ?
    430 
    431 # USB Printer
    432 ulpt*	at uhub? port ?
    433 
    434 # USB Generic driver
    435 #ugen*	at uhub? port ?
    436 
    437 # Audio Devices
    438 
    439 # PCI audio devices
    440 eap*	at pci? dev ? function ?	# Ensoniq AudioPCI
    441 
    442 # ISA Plug-and-Play audio devices
    443 ess*	at isapnp?			# ESS Tech ES1887, ES1888, ES888 audio
    444 guspnp*	at isapnp?			# Gravis Ultra Sound PnP audio
    445 sb*	at isapnp?			# SoundBlaster-compatible audio
    446 wss*	at isapnp?			# Windows Sound System
    447 ym*	at isapnp?			# Yamaha OPL3-SA3 audio
    448 
    449 # ISA audio devices
    450 aria0	at isa? port 0x290 irq 10 		# Aria
    451 gus0	at isa? port 0x220 irq 7 drq 1 drq2 6	# Gravis Ultra Sound
    452 pas0	at isa? port 0x220 irq 7 drq 1		# ProAudio Spectrum
    453 pss0	at isa? port 0x220 irq 7 drq 6  	# Personal Sound System
    454 sp0	at pss0 port 0x530 irq 10 drq 0		# 	sound port driver
    455 sb0	at isa? port 0x220 irq 5 drq 1 drq2 5	# SoundBlaster
    456 wss0	at isa? port 0x530 irq 10 drq 0	drq2 1	# Windows Sound System
    457 
    458 # OPL[23] FM syntheziers
    459 #opl0	at isa? port 0x388	# use only if not attached to sound card
    460 opl*	at ess?
    461 opl*	at sb?
    462 
    463 # USB Audio devices
    464 #uaudio*	at uhub? port ?
    465 
    466 # Audio support
    467 audio*	at aria?
    468 audio*	at eap?
    469 audio*	at ess?
    470 audio*	at gus?
    471 audio*	at guspnp?
    472 audio*	at pas?
    473 audio*	at sb?
    474 audio*	at sp?
    475 #audio*	at uaudio?
    476 audio*	at wss?
    477 audio*	at ym?
    478 
    479 # MIDI support
    480 midi*	at pcppi?		# MIDI interface to the PC speaker
    481 midi*	at sb?			# SB MPU401 port
    482 midi*	at opl?			# OPL FM synth
    483 
    484 # The spkr driver provides a simple tone interface to the built in speaker.
    485 #spkr0	at pcppi?		# PC speaker
    486 
    487 
    488 # Mice
    489 
    490 # ISA busmice
    491 lms0	at isa? port 0x23c irq 5	# Logitech bus mouse
    492 lms1	at isa? port 0x238 irq 5
    493 mms0	at isa? port 0x23c irq 5	# Microsoft InPort mouse
    494 mms1	at isa? port 0x238 irq 5
    495 #pms0	at pc? irq 12		# PS/2 auxiliary port mouse
    496 #pms0	at vt? irq 12		# PS/2 auxiliary port mouse
    497 
    498 
    499 # Joysticks
    500 
    501 # ISA Plug-and-Play joysticks
    502 joy*	at isapnp?			# Game ports (usually on audio cards)
    503 
    504 # ISA joysticks. Probe is a little strange; add only if you have one.
    505 #joy0	at isa? port 0x201
    506 
    507 
    508 # Miscellaneous Devices
    509 
    510 # Planetconnect Satellite receiver driver.
    511 #satlink0 at isa? port 0x300 drq 1
    512 
    513 
    514 # Pull in optional local configuration
    515 include	"arch/i386/conf/GENERIC.local"
    516 
    517 
    518 # Pseudo-Devices
    519 
    520 # disk/mass storage pseudo-devices
    521 pseudo-device	ccd		4	# concatenated/striped disk devices
    522 pseudo-device	md		1	# memory disk device (ramdisk)
    523 pseudo-device	vnd		4	# disk-like interface to files
    524 
    525 # network pseudo-devices
    526 pseudo-device	bpfilter	8	# Berkeley packet filter
    527 pseudo-device	ipfilter		# IP filter (firewall) and NAT
    528 pseudo-device	loop			# network loopback
    529 pseudo-device	ppp		2	# Point-to-Point Protocol
    530 pseudo-device	sl		2	# Serial Line IP
    531 pseudo-device	strip		2	# Starmode Radio IP (Metricom)
    532 pseudo-device	tun		2	# network tunneling over tty
    533 
    534 # miscellaneous pseudo-devices
    535 pseudo-device	pty		64	# pseudo-terminals
    536 pseudo-device	tb		1	# tablet line discipline
    537 pseudo-device	sequencer	1	# MIDI sequencer
    538 
    539 # rnd is EXPERIMENTAL at this point.
    540 #pseudo-device	rnd			# /dev/random and in-kernel generator
    541 #options 	RND_COM			# use "com" randomness as well (BROKEN)
    542