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GENERIC_TINY revision 1.15
      1 #	$NetBSD: GENERIC_TINY,v 1.15 2000/04/03 00:03:30 augustss Exp $
      2 #
      3 #	GENERIC_TINY -- suitable default for 4M machines
      4 #			No EISA, PCI, PCMCIA or SCSI.
      5 #
      6 
      7 include "arch/i386/conf/std.i386"
      8 
      9 maxusers	32		# estimated number of users
     10 
     11 # CPU support.  At least one is REQUIRED.
     12 options 	I386_CPU
     13 options 	I486_CPU
     14 options 	I586_CPU
     15 options 	I686_CPU
     16 
     17 # CPU-related options.
     18 options 	MATH_EMULATE	# floating point emulation
     19 #options 	VM86		# virtual 8086 emulation
     20 #options 	USER_LDT	# user-settable LDT; used by WINE
     21 # eliminate delay no-ops in I/O; recommended on all but very old machines
     22 #options 	DUMMY_NOPS
     23 
     24 # Misc. i386-specific options
     25 #options 	XSERVER		# X server support in console drivers
     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\""
     30 
     31 # The following options override the memory sizes passed in from the boot
     32 # block.  Use them *only* if the boot block is unable to determine the correct
     33 # values.  Note that the BIOS may *correctly* report less than 640k of base
     34 # memory if the extended BIOS data area is located at the top of base memory
     35 # (as is the case on most recent systems).
     36 #options 	REALBASEMEM=...	# size of base memory
     37 #options 	REALEXTMEM=...	# size of extended memory
     38 
     39 # Standard system options
     40 
     41 #options 	UCONSOLE	# users can use TIOCCONS (for xconsole)
     42 options 	INSECURE	# disable kernel security levels
     43 
     44 options 	RTC_OFFSET=0	# hardware clock is this many mins. west of GMT
     45 #options 	NTP		# NTP phase/frequency locked loop
     46 
     47 #options 	KTRACE		# system call tracing via ktrace(1)
     48 
     49 #options 	SYSVMSG		# System V-like message queues
     50 #options 	SYSVSEM		# System V-like semaphores
     51 #options 	SYSVSHM		# System V-like memory sharing
     52 #options 	SHMMAXPGS=1024	# 1024 pages is the default
     53 
     54 #options 	LKM		# loadable kernel modules
     55 
     56 # Diagnostic/debugging support options
     57 #options 	DIAGNOSTIC	# cheap kernel consistency checks
     58 #options 	DEBUG		# expensive debugging checks/support
     59 #options 	KMEMSTATS	# kernel memory statistics (vmstat -m)
     60 options 	DDB		# in-kernel debugger
     61 #options 	DDB_HISTORY_SIZE=100	# enable history editing in DDB
     62 #options 	KGDB		# remote debugger
     63 #options 	"KGDB_DEVNAME=\"com\"",KGDBADDR=0x3f8,KGDBRATE=9600
     64 #makeoptions	DEBUG="-g"	# compile full symbol table
     65 
     66 # Compatibility options
     67 options 	COMPAT_NOMID	# compatibility with 386BSD, BSDI, NetBSD 0.8,
     68 options 	COMPAT_09	# NetBSD 0.9,
     69 options 	COMPAT_10	# NetBSD 1.0,
     70 options 	COMPAT_11	# NetBSD 1.1,
     71 options 	COMPAT_12	# NetBSD 1.2,
     72 options 	COMPAT_13	# NetBSD 1.3,
     73 options 	COMPAT_14	# NetBSD 1.4,
     74 options 	COMPAT_43	# and 4.3BSD
     75 options 	COMPAT_386BSD_MBRPART # recognize old partition ID
     76 
     77 #options 	COMPAT_SVR4	# binary compatibility with SVR4
     78 #options 	COMPAT_IBCS2	# binary compatibility with SCO and ISC
     79 #options 	COMPAT_LINUX	# binary compatibility with Linux
     80 #options 	COMPAT_FREEBSD	# binary compatibility with FreeBSD
     81 
     82 options 	COMPAT_AOUT	# binary compat with NetBSD a.out binaries
     83 
     84 # File systems
     85 file-system 	FFS		# UFS
     86 file-system 	EXT2FS		# second extended file system (linux)
     87 #file-system 	LFS		# log-structured file system
     88 file-system 	MFS		# memory file system
     89 file-system 	NFS		# Network File System client
     90 file-system 	CD9660		# ISO 9660 + Rock Ridge file system
     91 file-system 	MSDOSFS		# MS-DOS file system
     92 #file-system 	FDESC		# /dev/fd
     93 file-system 	KERNFS		# /kern
     94 #file-system 	NULLFS		# loopback file system
     95 #file-system 	PORTAL		# portal filesystem (still experimental)
     96 #file-system 	PROCFS		# /proc
     97 #file-system 	UMAPFS		# NULLFS + uid and gid remapping
     98 #file-system 	UNION		# union file system
     99 
    100 # File system options
    101 #options 	QUOTA		# UFS quotas
    102 #options 	FFS_EI		# FFS Endian Independant support
    103 options 	NFSSERVER	# Network File System server
    104 #options 	EXT2FS_SYSTEM_FLAGS # makes ext2fs file flags (append and
    105 				# immutable) behave as system flags.
    106 
    107 # Networking options
    108 #options 	GATEWAY		# packet forwarding
    109 options 	INET		# IP + ICMP + TCP + UDP
    110 #options 	MROUTING	# IP multicast routing
    111 #options 	NS		# XNS
    112 #options 	NSIP		# XNS tunneling over IP
    113 #options 	ISO,TPIP	# OSI
    114 #options 	EON		# OSI tunneling over IP
    115 #options 	CCITT,LLC,HDLC	# X.25
    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 	PFIL_HOOKS	# pfil(9) packet filter hooks
    121 #options 	IPFILTER_LOG	# ipmon(8) log support
    122 
    123 # Compatibility with 4.2BSD implementation of TCP/IP.  Not recommended.
    124 #options 	TCP_COMPAT_42
    125 
    126 # These options enable verbose messages for several subsystems.
    127 # Warning, these may compile large string tables into the kernel!
    128 #options 	EISAVERBOSE	# verbose EISA device autoconfig messages
    129 #options 	PCIVERBOSE	# verbose PCI device autoconfig messages
    130 #options 	PCI_CONFIG_DUMP	# verbosely dump PCI config space
    131 #options 	PCMCIAVERBOSE	# verbose PCMCIA configuration messages
    132 options 	SCSIVERBOSE	# human readable SCSI error messages
    133 #options 	USBVERBOSE	# verbose USB device autoconfig messages
    134 
    135 #options 	NFS_BOOT_BOOTP,NFS_BOOT_BOOTPARAM
    136 
    137 # Kernel root file system and dump configuration.
    138 config		netbsd	root on ? type ?
    139 #config		netbsd	root on sd0a type ffs
    140 #config		netbsd	root on ? type nfs
    141 
    142 #
    143 # Device configuration
    144 #
    145 
    146 mainbus0 at root
    147 
    148 #apm0	at mainbus0			# Advanced power management
    149 
    150 
    151 # Basic Bus Support
    152 
    153 # PCI bus support
    154 #pci*	at mainbus? bus ?
    155 #pci*	at pchb? bus ?
    156 #pci*	at ppb? bus ?
    157 
    158 # PCI bridges
    159 #pchb*	at pci? dev ? function ?	# PCI-Host bridges
    160 #pceb*	at pci? dev ? function ?	# PCI-EISA bridges
    161 #pcib*	at pci? dev ? function ?	# PCI-ISA bridges
    162 #ppb*	at pci? dev ? function ?	# PCI-PCI bridges
    163 # XXX 'puc's aren't really bridges, but there's no better place for them here
    164 #puc*	at pci? dev ? function ?	# PCI "universal" comm. cards
    165 
    166 # EISA bus support
    167 #eisa*	at mainbus?
    168 #eisa*	at pceb?
    169 
    170 # ISA bus support
    171 isa*	at mainbus?
    172 #isa*	at pceb?
    173 #isa*	at pcib?
    174 
    175 # PCMCIA bus support
    176 #pcmcia*	at pcic? controller ? socket ?
    177 
    178 # ISA PCMCIA controllers
    179 #pcic0	at isa? port 0x3e0 iomem 0xd0000 iosiz 0x4000
    180 #pcic1	at isa? port 0x3e2 iomem 0xd4000 iosiz 0x4000
    181 
    182 # ISA Plug-and-Play bus support
    183 isapnp0	at isa?
    184 
    185 # ISA Plug-and-Play PCMCIA controllers
    186 #pcic*	at isapnp?
    187 
    188 # Coprocessor Support
    189 
    190 # Math Coprocessor support
    191 npx0	at isa? port 0xf0 irq 13	# x86 math coprocessor
    192 
    193 
    194 # Console Devices
    195 
    196 # ISA console.  You can only configure one of these!
    197 pc0	at isa? port 0x60 irq 1		# pccons generic PC console driver
    198 #vt0	at isa? port 0x60 irq 1		# PCVT console driver
    199 
    200 #pcppi0	at isa?
    201 #sysbeep0	at pcppi?
    202 
    203 # Serial Devices
    204 
    205 # PCI serial interfaces
    206 #com*	at puc? port ?			# 16x50s on "universal" comm boards
    207 #cy*	at pci? dev ? function ?	# Cyclades Cyclom-Y serial boards
    208 
    209 # ISA Plug-and-Play serial interfaces
    210 com*	at isapnp?			# Modems and serial boards
    211 
    212 # PCMCIA serial interfaces
    213 #com*	at pcmcia? function ?		# Modems and serial cards
    214 
    215 # ISA serial interfaces
    216 #options 	COM_HAYESP		# adds Hayes ESP serial board support
    217 com0	at isa? port 0x3f8 irq 4	# Standard PC serial ports
    218 com1	at isa? port 0x2f8 irq 3
    219 com2	at isa? port 0x3e8 irq 5
    220 #com3	at isa? port 0x2e8 irq 9
    221 #ast0	at isa? port 0x1a0 irq 5	# AST 4-port serial cards
    222 #com*	at ast? slave ?
    223 #boca0	at isa? port 0x100 irq 5	# BOCA 8-port serial cards
    224 #com*	at boca? slave ?
    225 #rtfps0	at isa? port 0x1230 irq 10	# RT 4-port serial cards
    226 #com*	at rtfps? slave ?
    227 #cy0	at isa? iomem 0xd4000 irq 12	# Cyclades serial cards
    228 
    229 
    230 # Parallel Printer Interfaces
    231 
    232 # PCI parallel printer interfaces
    233 #lpt*	at puc? port ?			# || ports on "universal" comm boards
    234 
    235 # ISA parallel printer interfaces
    236 lpt0	at isa? port 0x378 irq 7	# standard PC parallel ports
    237 #lpt1	at isa? port 0x278
    238 #lpt2	at isa? port 0x3bc
    239 
    240 
    241 # SCSI Controllers and Devices
    242 
    243 # PCI SCSI controllers
    244 #ahc*	at pci? dev ? function ?	# Adaptec [23]94x, aic78x0 SCSI
    245 #dpt*	at pci? dev ? function ?	# DPT SmartCache/SmartRAID
    246 #bha*	at pci? dev ? function ?	# BusLogic 9xx SCSI
    247 #isp*	at pci? dev ? function ?	# Qlogic ISP [12]0x0 SCSI/FibreChannel
    248 #ncr*	at pci? dev ? function ?	# NCR 53c8xx SCSI
    249 
    250 # EISA SCSI controllers
    251 #ahb*	at eisa? slot ?			# Adaptec 174[02] SCSI
    252 #ahc*	at eisa? slot ?			# Adaptec 274x, aic7770 SCSI
    253 #bha*	at eisa? slot ?			# BusLogic 7xx SCSI
    254 #dpt*	at eisa? slot ?			# DPT SmartCache/SmartRAID
    255 #uha*	at eisa? slot ?			# UltraStor 24f SCSI
    256 
    257 # PCMCIA SCSI controllers
    258 #aic*	at pcmcia? function ?		# Adaptec APA-1460 SCSI
    259 
    260 # ISA Plug-and-Play SCSI controllers
    261 aic*	at isapnp?			# Adaptec AHA-1520B
    262 
    263 # ISA SCSI controllers
    264 aha0	at isa? port 0x330 irq ? drq ?	# Adaptec 154[02] SCSI
    265 aha1	at isa? port 0x334 irq ? drq ?
    266 ahc0	at isa? port ? irq ?		# Adaptec 284x SCSI
    267 aic0	at isa? port 0x340 irq 11	# Adaptec 152[02] SCSI
    268 bha0	at isa? port 0x330 irq ? drq ?	# BusLogic [457]4X SCSI
    269 bha1	at isa? port 0x334 irq ? drq ?
    270 sea0	at isa? iomem 0xc8000 irq 5	# Seagate/Future Domain SCSI
    271 uha0	at isa? port 0x330 irq ? drq ?	# UltraStor [13]4f SCSI
    272 uha1	at isa? port 0x340 irq ? drq ?
    273 wds0	at isa? port 0x350 irq 15 drq 6	# WD7000 and TMC-7000 controllers
    274 wds1	at isa? port 0x358 irq 11 drq 5
    275 
    276 # SCSI bus support
    277 scsibus* at aha?
    278 #scsibus* at ahb?
    279 #scsibus* at ahc?
    280 scsibus* at aic?
    281 scsibus* at bha?
    282 #scsibus* at dpt?
    283 #scsibus* at isp?
    284 #scsibus* at ncr?
    285 scsibus* at sea?
    286 scsibus* at uha?
    287 scsibus* at wds?
    288 
    289 # SCSI devices
    290 sd*	at scsibus? target ? lun ?	# SCSI disk drives
    291 st*	at scsibus? target ? lun ?	# SCSI tape drives
    292 cd*	at scsibus? target ? lun ?	# SCSI CD-ROM drives
    293 ch*	at scsibus? target ? lun ?	# SCSI autochangers
    294 ss*	at scsibus? target ? lun ?	# SCSI scanners
    295 uk*	at scsibus? target ? lun ?	# SCSI unknown
    296 
    297 
    298 # IDE and related devices
    299 
    300 # ISA Plug-and-Play IDE controllers
    301 wdc*	at isapnp?
    302 
    303 # PCMCIA IDE controllers
    304 #wdc*	at pcmcia? function ?
    305 
    306 # ISA IDE controllers
    307 wdc0	at isa? port 0x1f0 irq 14	# ST506, ESDI, and IDE controllers
    308 wdc1	at isa? port 0x170 irq 15
    309 
    310 # IDE drives
    311 wd*	at wdc? drive ?			# the drives themselves
    312 
    313 # ATAPI bus support
    314 atapibus* at wdc?
    315 
    316 # ATAPI devices
    317 cd*	at atapibus? drive ?		# ATAPI CD-ROM drives
    318 sd*	at atapibus? drive ?		# ATAPI disk drives
    319 
    320 
    321 # Miscellaneous mass storage devices
    322 
    323 # ISA floppy
    324 fdc0	at isa? port 0x3f0 irq 6 drq 2	# standard PC floppy controllers
    325 #fdc1	at isa? port 0x370 irq ? drq ?
    326 fd*	at fdc? drive ?			# the drives themselves
    327 # some machines need you to do this instead of fd*
    328 #fd0	at fdc0 drive 0
    329 
    330 # ISA CD-ROM devices
    331 #mcd0	at isa? port 0x300 irq 10	# Mitsumi CD-ROM drives
    332 
    333 # ISA tape devices
    334 # note: the wt driver conflicts unpleasantly with SMC boards at the
    335 # same I/O address. The probe reprograms their EEPROMs. Don't
    336 # uncomment it unless you are actually using it.
    337 #wt0	at isa? port 0x308 irq 5 drq 1	# Archive and Wangtek QIC tape drives
    338 
    339 
    340 # Network Interfaces
    341 
    342 # PCI network interfaces
    343 #de*	at pci? dev ? function ?	# DEC 21x4x-based Ethernet
    344 #en*	at pci? dev ? function ?	# ENI/Adaptec ATM
    345 #ep*	at pci? dev ? function ?	# 3Com 3c59x/3c90x Ethernet
    346 #epic*	at pci? dev ? function ?	# SMC EPIC/100 Ethernet
    347 #esh*	at pci? dev ? function ?	# Essential HIPPI card
    348 #fpa*	at pci? dev ? function ?	# DEC DEFPA FDDI
    349 #fxp*	at pci? dev ? function ?	# Intel EtherExpress PRO 10+/100B
    350 #le*	at pci? dev ? function ?	# PCnet-PCI Ethernet
    351 #ne*	at pci? dev ? function ?	# NE2000-compatible Ethernet
    352 #tl*	at pci? dev ? function ?	# ThunderLAN-based Ethernet
    353 
    354 # EISA network interfaces
    355 #ep*	at eisa? slot ?			# 3Com 3c579 Ethernet
    356 #fea*	at eisa? slot ?			# DEC DEFEA FDDI
    357 
    358 # ISA Plug-and-Play network interfaces
    359 ep*	at isapnp?			# 3Com 3c509 Ethernet
    360 ne*	at isapnp?			# NE2000-compatible Ethernet
    361 
    362 # PCMCIA network interfaces
    363 #ep*	at pcmcia? function ?		# 3Com 3c589 and 3c562 Ethernet
    364 #mbe*	at pcmcia? function ?		# MB8696x based Ethernet
    365 #ne*	at pcmcia? function ?		# NE2000-compatible Ethernet
    366 #sm*	at pcmcia? function ?		# Megahertz Ethernet
    367 
    368 # ISA network interfaces
    369 ate0	at isa? port 0x2a0 irq ?		# AT1700
    370 ec0	at isa? port 0x250 iomem 0xd8000 irq 9	# 3Com 3c503 Ethernet
    371 eg0	at isa? port 0x280 irq 9		# 3C505 ethernet cards
    372 el0	at isa? port 0x300 irq 9		# 3C501 ethernet cards
    373 ep0	at isa? port ? irq ?			# 3C509 ethernet cards
    374 ef0	at isa? port 0x360 iomem 0xd0000 irq 7	# 3C507
    375 ai0	at isa? port 0x360 iomem 0xd0000 irq 7	# StarLAN
    376 fmv0	at isa? port 0x2a0 irq ?		# FMV-180 series
    377 ix0	at isa? port 0x300 irq 10		# EtherExpress/16
    378 iy0	at isa? port 0x360 irq ?		# EtherExpress PRO 10 ISA
    379 lc0	at isa? port 0x320 iomem ? irq ?	# DEC EtherWORKS III (LEMAC)
    380 #depca0	at isa? port 0x300 iomem 0xc8000 iosiz 0x8000 irq 5	# DEPCA
    381 #le*	at depca?
    382 nele0	at isa? port 0x320 irq 9 drq 7		# NE2100
    383 le*	at nele?
    384 bicc0	at isa? port 0x320 irq 10 drq 7		# BICC IsoLan
    385 le*	at bicc?
    386 ne0	at isa? port 0x280 irq 9		# NE[12]000 ethernet cards
    387 ne1	at isa? port 0x300 irq 10
    388 sm0	at isa? port 0x300 irq 10		# SMC91C9x Ethernet
    389 we0	at isa? port 0x280 iomem 0xd0000 irq 9	# WD/SMC Ethernet
    390 we1	at isa? port 0x300 iomem 0xcc000 irq 10
    391 
    392 # MII bus support
    393 #mii*	at tl?
    394 
    395 # MII PHY network interfaces
    396 #tlphy*	at mii? dev ?			# ThunderLAN PHYs
    397 #nsphy*	at mii? dev ?			# NS and compatible PHYs
    398 
    399 
    400 # USB Controller and Devices
    401 
    402 # PCI USB controllers
    403 #uhci*	at pci?				# Universal Host Controller (Intel)
    404 #ohci*	at pci?				# Open Host Controller
    405 
    406 # USB bus support
    407 #usb*	at uhci?
    408 #usb*	at ohci?
    409 
    410 # USB Hubs
    411 #uhub*	at usb?
    412 #uhub*	at uhub? port ?
    413 
    414 # USB Mice
    415 #ums*	at uhub? port ?
    416 
    417 # USB Keyboards
    418 #ukbd*	at uhub? port ?
    419 
    420 # USB Generic HID devices
    421 #uhid*	at uhub? port ?
    422 
    423 # USB Printer
    424 #ulpt*	at uhub? port ?
    425 
    426 # USB Mass Storage
    427 #umass*	at uhub? port ? configuration ? interface ?
    428 #atapibus* at umass? channel ?
    429 #scsibus* at umass? channel ?
    430 
    431 # USB Ethernet adapters
    432 #aue*	at uhub? port ?		# ADMtek AN986 Pegasus based adapters
    433 #cue*	at uhub? port ?		# CATC USB-EL1201A based adapters
    434 #kue*	at uhub? port ?		# Kawasaki LSI KL5KUSB101B based adapters
    435 
    436 # USB Generic driver
    437 #ugen*	at uhub? port ?
    438 
    439 # Audio Devices
    440 
    441 # PCI audio devices
    442 #eap*	at pci? dev ? function ?	# Ensoniq AudioPCI
    443 
    444 # ISA Plug-and-Play audio devices
    445 #guspnp*	at isapnp?			# Gravis Ultra Sound PnP audio
    446 #sb*	at isapnp?			# SoundBlaster-compatible audio
    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 # Audio support
    459 #audio*	at aria?
    460 #audio*	at eap?
    461 #audio*	at gus?
    462 #audio*	at guspnp?
    463 #audio*	at pas?
    464 #audio*	at sb?
    465 #audio*	at sp?
    466 #audio*	at wss?
    467 #audio*	at ym?
    468 
    469 # The spkr driver provides a simple tone interface to the built in speaker.
    470 #spkr0	at pcppi?		# PC speaker
    471 
    472 
    473 # Mice
    474 
    475 # ISA busmice
    476 #olms0	at isa? port 0x23c irq 5	# Logitech bus mouse
    477 #olms1	at isa? port 0x238 irq 5
    478 #omms0	at isa? port 0x23c irq 5	# Microsoft InPort mouse
    479 #omms1	at isa? port 0x238 irq 5
    480 #opms0	at pc? irq 12		# PS/2 auxiliary port mouse
    481 #opms0	at vt? irq 12		# PS/2 auxiliary port mouse
    482 
    483 
    484 # Joysticks
    485 
    486 # ISA Plug-and-Play joysticks
    487 #joy*	at isapnp?			# Game ports (usually on audio cards)
    488 
    489 # ISA joysticks. Probe is a little strange; add only if you have one.
    490 #joy0	at isa? port 0x201
    491 
    492 
    493 # Miscellaneous Devices
    494 
    495 # Planetconnect Satellite receiver driver.
    496 #satlink0 at isa? port 0x300 drq 1
    497 
    498 
    499 # Pull in optional local configuration
    500 include	"arch/i386/conf/GENERIC.local"
    501 
    502 
    503 # Pseudo-Devices
    504 
    505 # disk/mass storage pseudo-devices
    506 pseudo-device	ccd		4	# concatenated/striped disk devices
    507 pseudo-device	md		1	# memory disk device (ramdisk)
    508 pseudo-device	vnd		4	# disk-like interface to files
    509 
    510 # network pseudo-devices
    511 pseudo-device	bpfilter	8	# Berkeley packet filter
    512 pseudo-device	ipfilter		# IP filter (firewall) and NAT
    513 pseudo-device	loop			# network loopback
    514 pseudo-device	ppp		2	# Point-to-Point Protocol
    515 pseudo-device	sl		2	# Serial Line IP
    516 pseudo-device	strip		2	# Starmode Radio IP (Metricom)
    517 pseudo-device	tun		2	# network tunneling over tty
    518 
    519 # miscellaneous pseudo-devices
    520 pseudo-device	pty		16	# pseudo-terminals
    521 pseudo-device	tb		1	# tablet line discipline
    522 pseudo-device	rnd			# /dev/random and in-kernel generator
    523 #options 	RND_COM			# use "com" randomness as well (BROKEN)
    524