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GENERIC revision 1.178
      1 #	$NetBSD: GENERIC,v 1.178 1998/08/26 13:37:49 augustss 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 	UVM		# Use UVM instead of Mach VM.
     53 #options 	PMAP_NEW	# new pmap interface; requires UVM
     54 
     55 options 	SYSVMSG		# System V-like message queues
     56 options 	SYSVSEM		# System V-like semaphores
     57 options 	SYSVSHM		# System V-like memory sharing
     58 #options 	SHMMAXPGS=1024	# 1024 pages is the default
     59 
     60 options 	LKM		# loadable kernel modules
     61 
     62 # Diagnostic/debugging support options
     63 options 	DIAGNOSTIC	# cheap kernel consistency checks
     64 #options 	DEBUG		# expensive debugging checks/support
     65 #options 	KMEMSTATS	# kernel memory statistics (vmstat -m)
     66 options 	DDB		# in-kernel debugger
     67 #options 	DDB_HISTORY_SIZE=100	# enable history editing in DDB
     68 #options 	KGDB		# remote debugger
     69 #options 	"KGDB_DEVNAME=\"com\"",KGDBADDR=0x3f8,KGDBRATE=9600
     70 #makeoptions	DEBUG="-g"	# compile full symbol table
     71 
     72 # Compatibility options
     73 options 	COMPAT_NOMID	# compatibility with 386BSD, BSDI, NetBSD 0.8,
     74 options 	COMPAT_09	# NetBSD 0.9,
     75 options 	COMPAT_10	# NetBSD 1.0,
     76 options 	COMPAT_11	# NetBSD 1.1,
     77 options 	COMPAT_12	# NetBSD 1.2,
     78 options 	COMPAT_13	# NetBSD 1.3,
     79 options 	COMPAT_43	# and 4.3BSD
     80 options 	COMPAT_386BSD_MBRPART # recognize old partition ID
     81 
     82 options 	COMPAT_SVR4	# binary compatibility with SVR4
     83 options 	COMPAT_IBCS2	# binary compatibility with SCO and ISC
     84 options 	COMPAT_LINUX	# binary compatibility with Linux
     85 options 	COMPAT_FREEBSD	# binary compatibility with FreeBSD
     86 
     87 # Executable format options
     88 options 	EXEC_ELF32	# 32-bit ELF executables (SVR4, Linux)
     89 
     90 # File systems
     91 file-system 	FFS		# UFS
     92 file-system 	EXT2FS		# second extended file system (linux)
     93 file-system 	LFS		# log-structured file system
     94 file-system 	MFS		# memory file system
     95 file-system 	NFS		# Network File System client
     96 file-system 	CD9660		# ISO 9660 + Rock Ridge file system
     97 file-system 	MSDOSFS		# MS-DOS file system
     98 file-system 	FDESC		# /dev/fd
     99 file-system 	KERNFS		# /kern
    100 file-system 	NULLFS		# loopback file system
    101 file-system 	PORTAL		# portal filesystem (still experimental)
    102 file-system 	PROCFS		# /proc
    103 file-system 	UMAPFS		# NULLFS + uid and gid remapping
    104 file-system 	UNION		# union file system
    105 
    106 # File system options
    107 options 	QUOTA		# UFS quotas
    108 #options 	FFS_EI		# FFS Endian Independant support
    109 options 	NFSSERVER	# Network File System server
    110 #options 	EXT2FS_SYSTEM_FLAGS # makes ext2fs file flags (append and
    111 				# immutable) behave as system flags.
    112 
    113 # Networking options
    114 #options 	GATEWAY		# packet forwarding
    115 options 	INET		# IP + ICMP + TCP + UDP
    116 #options 	MROUTING	# IP multicast routing
    117 options 	NS		# XNS
    118 #options 	NSIP		# XNS tunneling over IP
    119 options 	ISO,TPIP	# OSI
    120 options 	EON		# OSI tunneling over IP
    121 options 	CCITT,LLC,HDLC	# X.25
    122 options 	NETATALK	# AppleTalk networking protocols
    123 #options 	PPP_BSDCOMP	# BSD-Compress compression support for PPP
    124 #options 	PPP_DEFLATE	# Deflate compression support for PPP
    125 #options 	PPP_FILTER	# Active filter support for PPP (requires bpf)
    126 #options 	PFIL_HOOKS	# pfil(9) packet filter hooks
    127 #options 	IPFILTER_LOG	# ipmon(8) log support
    128 
    129 # Compatibility with 4.2BSD implementation of TCP/IP.  Not recommended.
    130 #options 	TCP_COMPAT_42
    131 
    132 # These options enable verbose messages for several subsystems.
    133 # Warning, these may compile large string tables into the kernel!
    134 options 	EISAVERBOSE	# verbose EISA device autoconfig messages
    135 options 	PCIVERBOSE	# verbose PCI device autoconfig messages
    136 #options 	PCMCIAVERBOSE	# verbose PCMCIA configuration messages
    137 options 	SCSIVERBOSE	# human readable SCSI error messages
    138 options 	USBVERBOSE	# verbose USB device autoconfig messages
    139 
    140 options 	NFS_BOOT_BOOTP,NFS_BOOT_BOOTPARAM
    141 
    142 # Kernel root file system and dump configuration.
    143 config		netbsd	root on ? type ?
    144 #config		netbsd	root on sd0a type ffs
    145 #config		netbsd	root on ? type nfs
    146 
    147 #
    148 # Device configuration
    149 #
    150 
    151 mainbus0 at root
    152 
    153 #apm0	at mainbus0			# Advanced power management
    154 
    155 
    156 # Basic Bus Support
    157 
    158 # PCI bus support
    159 pci*	at mainbus? bus ?
    160 pci*	at pchb? bus ?
    161 pci*	at ppb? bus ?
    162 
    163 # PCI bridges
    164 pchb*	at pci? dev ? function ?	# PCI-Host bridges
    165 pceb*	at pci? dev ? function ?	# PCI-EISA bridges
    166 pcib*	at pci? dev ? function ?	# PCI-ISA bridges
    167 ppb*	at pci? dev ? function ?	# PCI-PCI bridges
    168 # XXX 'puc's aren't really bridges, but there's no better place for them here
    169 puc*	at pci? dev ? function ?	# PCI "universal" comm. cards
    170 
    171 # EISA bus support
    172 eisa*	at mainbus?
    173 eisa*	at pceb?
    174 
    175 # ISA bus support
    176 isa*	at mainbus?
    177 isa*	at pceb?
    178 isa*	at pcib?
    179 
    180 # PCMCIA bus support
    181 pcmcia*	at pcic? controller ? socket ?
    182 
    183 # ISA PCMCIA controllers
    184 pcic0	at isa? port 0x3e0 iomem 0xd0000 iosiz 0x4000
    185 pcic1	at isa? port 0x3e2 iomem 0xd4000 iosiz 0x4000
    186 
    187 # ISA Plug-and-Play bus support
    188 isapnp0	at isa?
    189 
    190 # ISA Plug-and-Play PCMCIA controllers
    191 pcic*	at isapnp?
    192 
    193 # Coprocessor Support
    194 
    195 # Math Coprocessor support
    196 npx0	at isa? port 0xf0 irq 13	# x86 math coprocessor
    197 
    198 
    199 # Console Devices
    200 
    201 # ISA console.  You can only configure one of these!
    202 pc0	at isa? port 0x60 irq 1		# pccons generic PC console driver
    203 #vt0	at isa? port 0x60 irq 1		# PCVT console driver
    204 
    205 # Keyboard layout configuration for pccons
    206 #options 	FRENCH_KBD
    207 #options 	FINNISH_KBD
    208 #options 	GERMAN_KBD
    209 #options 	NORWEGIAN_KBD
    210 
    211 pcppi0	at isa?
    212 sysbeep0	at pcppi?
    213 
    214 # Serial Devices
    215 
    216 # PCI serial interfaces
    217 com*	at puc? port ?			# 16x450s on "universal" comm boards
    218 cy*	at pci? dev ? function ?	# Cyclades Cyclom-Y serial boards
    219 
    220 # ISA Plug-and-Play serial interfaces
    221 com*	at isapnp?			# Modems and serial boards
    222 
    223 # PCMCIA serial interfaces
    224 com*	at pcmcia? function ?		# Modems and serial cards
    225 
    226 # ISA serial interfaces
    227 #options 	COM_HAYESP		# adds Hayes ESP serial board support
    228 com0	at isa? port 0x3f8 irq 4	# Standard PC serial ports
    229 com1	at isa? port 0x2f8 irq 3
    230 com2	at isa? port 0x3e8 irq 5
    231 #com3	at isa? port 0x2e8 irq 9
    232 #ast0	at isa? port 0x1a0 irq 5	# AST 4-port serial cards
    233 #com*	at ast? slave ?
    234 #boca0	at isa? port 0x100 irq 5	# BOCA 8-port serial cards
    235 #com*	at boca? slave ?
    236 #rtfps0	at isa? port 0x1230 irq 10	# RT 4-port serial cards
    237 #com*	at rtfps? slave ?
    238 #cy0	at isa? iomem 0xd4000 irq 12	# Cyclades serial cards
    239 
    240 
    241 # Parallel Printer Interfaces
    242 
    243 # PCI parallel printer interfaces
    244 lpt*	at puc? port ?			# || ports on "universal" comm boards
    245 
    246 # ISA parallel printer interfaces
    247 lpt0	at isa? port 0x378 irq 7	# standard PC parallel ports
    248 lpt1	at isa? port 0x278
    249 lpt2	at isa? port 0x3bc
    250 
    251 
    252 # SCSI Controllers and Devices
    253 
    254 # PCI SCSI controllers
    255 ahc*	at pci? dev ? function ?	# Adaptec [23]94x, aic78x0 SCSI
    256 bha*	at pci? dev ? function ?	# BusLogic 9xx SCSI
    257 isp*	at pci? dev ? function ?	# Qlogic ISP [12]0x0 SCSI/FibreChannel
    258 ncr*	at pci? dev ? function ?	# NCR 53c8xx SCSI
    259 
    260 # EISA SCSI controllers
    261 ahb*	at eisa? slot ?			# Adaptec 174[02] SCSI
    262 ahc*	at eisa? slot ?			# Adaptec 274x, aic7770 SCSI
    263 bha*	at eisa? slot ?			# BusLogic 7xx SCSI
    264 uha*	at eisa? slot ?			# UltraStor 24f SCSI
    265 
    266 # PCMCIA SCSI controllers
    267 aic*	at pcmcia? function ?		# Adaptec APA-1460 SCSI
    268 
    269 # ISA Plug-and-Play SCSI controllers
    270 aic*	at isapnp?			# Adaptec AHA-1520B
    271 
    272 # ISA SCSI controllers
    273 aha0	at isa? port 0x330 irq ? drq ?	# Adaptec 154[02] SCSI
    274 aha1	at isa? port 0x334 irq ? drq ?
    275 ahc0	at isa? port ? irq ?		# Adaptec 284x SCSI
    276 aic0	at isa? port 0x340 irq 11	# Adaptec 152[02] SCSI
    277 bha0	at isa? port 0x330 irq ? drq ?	# BusLogic [457]4X SCSI
    278 bha1	at isa? port 0x334 irq ? drq ?
    279 sea0	at isa? iomem 0xc8000 irq 5	# Seagate/Future Domain SCSI
    280 uha0	at isa? port 0x330 irq ? drq ?	# UltraStor [13]4f SCSI
    281 uha1	at isa? port 0x340 irq ? drq ?
    282 wds0	at isa? port 0x350 irq 15 drq 6	# WD7000 and TMC-7000 controllers
    283 wds1	at isa? port 0x358 irq 11 drq 5
    284 
    285 # SCSI bus support
    286 scsibus* at aha?
    287 scsibus* at ahb?
    288 scsibus* at ahc?
    289 scsibus* at aic?
    290 scsibus* at bha?
    291 scsibus* at isp?
    292 scsibus* at ncr?
    293 scsibus* at sea?
    294 scsibus* at uha?
    295 scsibus* at wds?
    296 
    297 # SCSI devices
    298 sd*	at scsibus? target ? lun ?	# SCSI disk drives
    299 st*	at scsibus? target ? lun ?	# SCSI tape drives
    300 cd*	at scsibus? target ? lun ?	# SCSI CD-ROM drives
    301 ch*	at scsibus? target ? lun ?	# SCSI autochangers
    302 ss*	at scsibus? target ? lun ?	# SCSI scanners
    303 uk*	at scsibus? target ? lun ?	# SCSI unknown
    304 
    305 
    306 # IDE and Related Devices
    307 
    308 # ISA Plug-and-Play IDE controllers
    309 wdc*	at isapnp?
    310 
    311 # PCMCIA IDE controllers
    312 wdc*	at pcmcia? function ?
    313 
    314 # ISA IDE controllers
    315 wdc0	at isa? port 0x1f0 irq 14	# ST506, ESDI, and IDE controllers
    316 wdc1	at isa? port 0x170 irq 15
    317 
    318 # IDE drives
    319 wd*	at wdc? drive ?			# the drives themselves
    320 
    321 # ATAPI bus support
    322 atapibus* at wdc?
    323 
    324 # ATAPI devices
    325 cd*	at atapibus? drive ?		# ATAPI CD-ROM drives
    326 sd*	at atapibus? drive ?		# ATAPI disk drives
    327 
    328 
    329 # Miscellaneous mass storage devices
    330 
    331 # ISA floppy
    332 fdc0	at isa? port 0x3f0 irq 6 drq 2	# standard PC floppy controllers
    333 #fdc1	at isa? port 0x370 irq ? drq ?
    334 fd*	at fdc? drive ?			# the drives themselves
    335 # some machines need you to do this instead of fd*
    336 #fd0	at fdc0 drive 0
    337 
    338 # ISA CD-ROM devices
    339 #mcd0	at isa? port 0x300 irq 10	# Mitsumi CD-ROM drives
    340 
    341 # ISA tape devices
    342 # note: the wt driver conflicts unpleasantly with SMC boards at the
    343 # same I/O address. The probe reprograms their EEPROMs. Don't
    344 # uncomment it unless you are actually using it.
    345 #wt0	at isa? port 0x308 irq 5 drq 1	# Archive and Wangtek QIC tape drives
    346 
    347 
    348 # Network Interfaces
    349 
    350 # PCI network interfaces
    351 de*	at pci? dev ? function ?	# DEC 21x4x-based Ethernet
    352 en*	at pci? dev ? function ?	# ENI/Adaptec ATM
    353 ep*	at pci? dev ? function ?	# 3Com 3c59x/3c90x Ethernet
    354 epic*	at pci? dev ? function ?	# SMC EPIC/100 Ethernet
    355 esh*	at pci? dev ? function ?	# Essential HIPPI card
    356 fpa*	at pci? dev ? function ?	# DEC DEFPA FDDI
    357 fxp*	at pci? dev ? function ?	# Intel EtherExpress PRO 10+/100B
    358 le*	at pci? dev ? function ?	# PCnet-PCI Ethernet
    359 ne*	at pci? dev ? function ?	# NE2000-compatible Ethernet
    360 tl*	at pci? dev ? function ?	# ThunderLAN-based Ethernet
    361 
    362 # EISA network interfaces
    363 ep*	at eisa? slot ?			# 3Com 3c579 Ethernet
    364 fea*	at eisa? slot ?			# DEC DEFEA FDDI
    365 
    366 # ISA Plug-and-Play network interfaces
    367 ep*	at isapnp?			# 3Com 3c509 Ethernet
    368 ne*	at isapnp?			# NE2000-compatible Ethernet
    369 
    370 # PCMCIA network interfaces
    371 ep*	at pcmcia? function ?		# 3Com 3c589 and 3c562 Ethernet
    372 mbe*	at pcmcia? function ?		# MB8696x based Ethernet
    373 ne*	at pcmcia? function ?		# NE2000-compatible Ethernet
    374 sm*	at pcmcia? function ?		# Megahertz Ethernet
    375 
    376 # ISA network interfaces
    377 ate0	at isa? port 0x2a0 irq ?		# AT1700
    378 cs0	at isa? port 0x300 iomem ? irq ? drq ?	# CS8900 Ethernet
    379 ec0	at isa? port 0x250 iomem 0xd8000 irq 9	# 3Com 3c503 Ethernet
    380 eg0	at isa? port 0x280 irq 9		# 3C505 ethernet cards
    381 el0	at isa? port 0x300 irq 9		# 3C501 ethernet cards
    382 ep0	at isa? port ? irq ?			# 3C509 ethernet cards
    383 ef0	at isa? port 0x360 iomem 0xd0000 irq 7	# 3C507
    384 ai0	at isa? port 0x360 iomem 0xd0000 irq 7	# StarLAN
    385 fmv0	at isa? port 0x2a0 irq ?		# FMV-180 series
    386 ix0	at isa? port 0x300 irq 10		# EtherExpress/16
    387 iy0	at isa? port 0x360 irq ?		# EtherExpress PRO 10 ISA
    388 lc0	at isa? port 0x320 iomem ? irq ?	# DEC EtherWORKS III (LEMAC)
    389 #depca0	at isa? port 0x300 iomem 0xc8000 iosiz 0x8000 irq 5	# DEPCA
    390 #le*	at depca?
    391 nele0	at isa? port 0x320 irq 9 drq 7		# NE2100
    392 le*	at nele?
    393 bicc0	at isa? port 0x320 irq 10 drq 7		# BICC IsoLan
    394 le*	at bicc?
    395 ne0	at isa? port 0x280 irq 9		# NE[12]000 ethernet cards
    396 ne1	at isa? port 0x300 irq 10
    397 sm0	at isa? port 0x300 irq 10		# SMC91C9x Ethernet
    398 we0	at isa? port 0x280 iomem 0xd0000 irq 9	# WD/SMC Ethernet
    399 we1	at isa? port 0x300 iomem 0xcc000 irq 10
    400 
    401 # MII/PHY support
    402 inphy*	at mii? phy ?			# Intel 82555 PHYs
    403 nsphy*	at mii? phy ?			# NS83840 PHYs
    404 qsphy*	at mii? phy ?			# Quality Semiconductor QS6612 PHYs
    405 tlphy*	at mii? phy ?			# ThunderLAN PHYs
    406 
    407 # USB Controller and Devices
    408 
    409 # PCI USB controllers
    410 uhci*	at pci?				# Universal Host Controller (Intel)
    411 ohci*	at pci?				# Open Host Controller
    412 
    413 # USB bus support
    414 usb*	at uhci?
    415 usb*	at ohci?
    416 
    417 # USB Hubs
    418 uhub*	at usb?
    419 uhub*	at uhub? port ?
    420 
    421 # USB Mice
    422 ums*	at uhub? port ?
    423 wsmouse*	at ums?
    424 
    425 # USB Keyboards
    426 ukbd*	at uhub? port ?
    427 wskbd*	at ukbd? console ?
    428 
    429 # USB Generic HID devices
    430 uhid*	at uhub? port ?
    431 
    432 # USB Printer
    433 ulpt*	at uhub? port ?
    434 
    435 # USB Generic driver
    436 #ugen*	at uhub? port ?
    437 
    438 # Audio Devices
    439 
    440 # PCI audio devices
    441 eap*	at pci? dev ? function ?	# Ensoniq AudioPCI
    442 
    443 # ISA Plug-and-Play audio devices
    444 ess*	at isapnp?			# ESS Tech ES1887, ES1888, ES888 audio
    445 guspnp*	at isapnp?			# Gravis Ultra Sound PnP audio
    446 sb*	at isapnp?			# SoundBlaster-compatible audio
    447 wss*	at isapnp?			# Windows Sound System
    448 ym*	at isapnp?			# Yamaha OPL3-SA3 audio
    449 
    450 # ISA audio devices
    451 aria0	at isa? port 0x290 irq 10 		# Aria
    452 gus0	at isa? port 0x220 irq 7 drq 1 drq2 6	# Gravis Ultra Sound
    453 pas0	at isa? port 0x220 irq 7 drq 1		# ProAudio Spectrum
    454 pss0	at isa? port 0x220 irq 7 drq 6  	# Personal Sound System
    455 sp0	at pss0 port 0x530 irq 10 drq 0		# 	sound port driver
    456 sb0	at isa? port 0x220 irq 5 drq 1 drq2 5	# SoundBlaster
    457 wss0	at isa? port 0x530 irq 10 drq 0	drq2 1	# Windows Sound System
    458 
    459 # OPL[23] FM syntheziers
    460 #opl0	at isa? port 0x388	# use only if not attached to sound card
    461 opl*	at ess?
    462 opl*	at sb?
    463 
    464 # USB Audio devices
    465 #uaudio*	at uhub? port ?
    466 
    467 # Audio support
    468 audio*	at aria?
    469 audio*	at eap?
    470 audio*	at ess?
    471 audio*	at gus?
    472 audio*	at guspnp?
    473 audio*	at pas?
    474 audio*	at sb?
    475 audio*	at sp?
    476 #audio*	at uaudio?
    477 audio*	at wss?
    478 audio*	at ym?
    479 
    480 # MIDI support
    481 midi*	at pcppi?		# MIDI interface to the PC speaker
    482 midi*	at sb?			# SB MPU401 port
    483 midi*	at opl?			# OPL FM synth
    484 
    485 # The spkr driver provides a simple tone interface to the built in speaker.
    486 #spkr0	at pcppi?		# PC speaker
    487 
    488 
    489 # Mice
    490 
    491 # ISA busmice
    492 lms0	at isa? port 0x23c irq 5	# Logitech bus mouse
    493 lms1	at isa? port 0x238 irq 5
    494 mms0	at isa? port 0x23c irq 5	# Microsoft InPort mouse
    495 mms1	at isa? port 0x238 irq 5
    496 #pms0	at pc? irq 12		# PS/2 auxiliary port mouse
    497 #pms0	at vt? irq 12		# PS/2 auxiliary port mouse
    498 
    499 
    500 # Joysticks
    501 
    502 # ISA Plug-and-Play joysticks
    503 joy*	at isapnp?			# Game ports (usually on audio cards)
    504 
    505 # ISA joysticks. Probe is a little strange; add only if you have one.
    506 #joy0	at isa? port 0x201
    507 
    508 
    509 # Miscellaneous Devices
    510 
    511 # Planetconnect Satellite receiver driver.
    512 #satlink0 at isa? port 0x300 drq 1
    513 
    514 
    515 # Pull in optional local configuration
    516 include	"arch/i386/conf/GENERIC.local"
    517 
    518 
    519 # Pseudo-Devices
    520 
    521 # disk/mass storage pseudo-devices
    522 pseudo-device	ccd		4	# concatenated/striped disk devices
    523 pseudo-device	md		1	# memory disk device (ramdisk)
    524 pseudo-device	vnd		4	# disk-like interface to files
    525 
    526 # network pseudo-devices
    527 pseudo-device	bpfilter	8	# Berkeley packet filter
    528 pseudo-device	ipfilter		# IP filter (firewall) and NAT
    529 pseudo-device	loop			# network loopback
    530 pseudo-device	ppp		2	# Point-to-Point Protocol
    531 pseudo-device	sl		2	# Serial Line IP
    532 pseudo-device	strip		2	# Starmode Radio IP (Metricom)
    533 pseudo-device	tun		2	# network tunneling over tty
    534 
    535 # miscellaneous pseudo-devices
    536 pseudo-device	pty		64	# pseudo-terminals
    537 pseudo-device	tb		1	# tablet line discipline
    538 pseudo-device	sequencer	1	# MIDI sequencer
    539 
    540 # rnd is EXPERIMENTAL at this point.
    541 #pseudo-device	rnd			# /dev/random and in-kernel generator
    542 #options 	RND_COM			# use "com" randomness as well (BROKEN)
    543