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GENERIC revision 1.111
      1  1.111     perry #	$NetBSD: GENERIC,v 1.111 1997/10/19 00:00:18 perry Exp $
      2    1.1   mycroft #
      3    1.1   mycroft #	GENERIC -- everything that's currently supported
      4    1.1   mycroft #
      5    1.1   mycroft 
      6   1.61      fvdl include "arch/i386/conf/std.i386"
      7   1.14       cgd 
      8  1.110   thorpej maxusers	32		# estimated number of users
      9  1.110   thorpej 
     10  1.110   thorpej # CPU support.  At least one is REQUIRED.
     11  1.110   thorpej options 	I386_CPU
     12   1.82    mellon options 	I486_CPU
     13   1.82    mellon options 	I586_CPU
     14  1.110   thorpej options 	I686_CPU	
     15  1.110   thorpej 
     16  1.110   thorpej # CPU-related options.
     17   1.82    mellon options 	MATH_EMULATE	# floating point emulation
     18  1.102   mycroft #options 	VM86		# virtual 8086 emulation
     19  1.102   mycroft options 	USER_LDT	# user-settable LDT; used by WINE
     20  1.110   thorpej #options 	DUMMY_NOPS	# speed hack; recommended
     21  1.110   thorpej 
     22  1.110   thorpej # Misc. i386-specific options
     23  1.110   thorpej options 	XSERVER		# X server support in console drivers
     24  1.110   thorpej 
     25  1.110   thorpej # This option allows you to force a serial console at the specified
     26  1.110   thorpej # I/O address.
     27  1.110   thorpej #options 	"CONSDEVNAME=\"com\"",CONADDR=0x3f8,CONSPEED=9600
     28   1.32   thorpej 
     29  1.101   mycroft # The following options override the memory sizes passed in from the boot
     30  1.101   mycroft # block.  Use them *only* if the boot block is unable to determine the correct
     31  1.111     perry # values.  Note that the BIOS may *correctly* report less than 640k of base
     32  1.101   mycroft # memory if the extended BIOS data area is located at the top of base memory
     33  1.101   mycroft # (as is the case on most recent systems).
     34  1.101   mycroft #options 	REALBASEMEM=...	# size of base memory
     35  1.101   mycroft #options 	REALEXTMEM=...	# size of extended memory
     36    1.1   mycroft 
     37  1.110   thorpej # Standard system options
     38  1.110   thorpej 
     39  1.110   thorpej options 	UCONSOLE	# users can use TIOCCONS (for xconsole)
     40  1.110   thorpej options 	INSECURE	# disable kernel security levels
     41    1.1   mycroft 
     42   1.82    mellon options 	RTC_OFFSET=0	# hardware clock is this many mins. west of GMT
     43   1.82    mellon #options 	NTP		# NTP phase/frequency locked loop
     44    1.1   mycroft 
     45   1.98     mikel options 	KTRACE		# system call tracing via ktrace(1)
     46    1.1   mycroft 
     47   1.82    mellon options 	SYSVMSG		# System V-like message queues
     48   1.82    mellon options 	SYSVSEM		# System V-like semaphores
     49   1.82    mellon options 	SYSVSHM		# System V-like memory sharing
     50   1.82    mellon #options 	SHMMAXPGS=1024	# 1024 pages is the default
     51   1.82    mellon 
     52  1.110   thorpej options 	LKM		# loadable kernel modules
     53  1.110   thorpej 
     54  1.110   thorpej # Diagnostic/debugging support options
     55  1.110   thorpej options 	DIAGNOSTIC	# cheap kernel consistency checks
     56  1.110   thorpej #options 	DEBUG		# expensive debugging checks/support
     57  1.110   thorpej options 	KMEMSTATS	# kernel memory statistics (vmstat -m)
     58  1.110   thorpej options 	DDB		# in-kernel debugger
     59  1.110   thorpej #options 	KGDB		# remote debugger
     60  1.110   thorpej #options 	"KGDB_DEVNAME=\"com\"",KGDBADDR=0x3f8,KGDBRATE=9600
     61  1.110   thorpej #makeoptions	DEBUG="-g"	# compile full symbol table
     62  1.110   thorpej 
     63  1.110   thorpej # Compatbility options
     64   1.82    mellon options 	COMPAT_NOMID	# compatibility with 386BSD, BSDI, NetBSD 0.8,
     65   1.82    mellon options 	COMPAT_09	# NetBSD 0.9,
     66   1.82    mellon options 	COMPAT_10	# NetBSD 1.0,
     67   1.82    mellon options 	COMPAT_11	# NetBSD 1.1,
     68   1.55   mycroft options 	COMPAT_12	# NetBSD 1.2,
     69   1.82    mellon options 	COMPAT_43	# and 4.3BSD
     70    1.1   mycroft 
     71   1.82    mellon options 	COMPAT_SVR4	# binary compatibility with SVR4
     72   1.82    mellon options 	COMPAT_IBCS2	# binary compatibility with SCO and ISC
     73   1.82    mellon options 	COMPAT_LINUX	# binary compatibility with Linux
     74   1.82    mellon options 	COMPAT_FREEBSD	# binary compatibility with FreeBSD
     75   1.59   mycroft 
     76  1.110   thorpej # Executable format options
     77   1.82    mellon options 	EXEC_ELF32	# 32-bit ELF executables (SVR4, Linux)
     78    1.1   mycroft 
     79  1.110   thorpej # File systems
     80   1.71   thorpej file-system 	FFS		# UFS
     81   1.80     perry file-system 	EXT2FS		# second extended file system (linux)
     82   1.71   thorpej file-system 	LFS		# log-structured file system
     83   1.71   thorpej file-system 	MFS		# memory file system
     84   1.71   thorpej file-system 	NFS		# Network File System client
     85   1.71   thorpej file-system 	CD9660		# ISO 9660 + Rock Ridge file system
     86   1.71   thorpej file-system 	MSDOSFS		# MS-DOS file system
     87   1.71   thorpej file-system 	FDESC		# /dev/fd
     88   1.71   thorpej file-system 	KERNFS		# /kern
     89   1.71   thorpej file-system 	NULLFS		# loopback file system
     90   1.71   thorpej file-system 	PORTAL		# portal filesystem (still experimental)
     91   1.71   thorpej file-system 	PROCFS		# /proc
     92   1.71   thorpej file-system 	UMAPFS		# NULLFS + uid and gid remapping
     93   1.71   thorpej file-system 	UNION		# union file system
     94   1.71   thorpej 
     95  1.110   thorpej # File system options
     96   1.82    mellon options 	QUOTA		# UFS quotas
     97   1.82    mellon options 	NFSSERVER	# Network File System server
     98   1.82    mellon options 	FIFO		# FIFOs; RECOMMENDED
     99   1.81     veego #options 	EXT2FS_SYSTEM_FLAGS # makes ext2fs file flags (append and
    100   1.80     perry 				# immutable) behave as system flags.
    101  1.110   thorpej # Networking options
    102   1.82    mellon #options 	GATEWAY		# packet forwarding
    103   1.82    mellon options 	INET		# IP + ICMP + TCP + UDP
    104   1.82    mellon #options 	MROUTING	# IP multicast routing
    105   1.82    mellon options 	NS		# XNS
    106   1.82    mellon #options 	NSIP		# XNS tunneling over IP
    107   1.82    mellon options 	ISO,TPIP	# OSI
    108   1.82    mellon options 	EON		# OSI tunneling over IP
    109   1.82    mellon options 	CCITT,LLC,HDLC	# X.25
    110  1.110   thorpej options 	NETATALK	# AppleTalk networking protocols
    111  1.110   thorpej #options 	PPP_BSDCOMP	# BSD-Compress compression support for PPP
    112  1.110   thorpej #options 	PPP_DEFLATE	# Deflate compression support for PPP
    113  1.110   thorpej #options 	PPP_FILTER	# Active filter support for PPP (requires bpf)
    114   1.82    mellon #options 	PFIL_HOOKS	# pfil(9) packet filter hooks
    115    1.1   mycroft 
    116  1.110   thorpej # Compatibility with 4.2BSD implementation of TCP/IP.  Not suggested.
    117  1.110   thorpej #options 	TCP_COMPAT_42
    118    1.1   mycroft 
    119  1.110   thorpej # These options enable verbose messages for autoconfiguration of
    120  1.110   thorpej # the corresponding bus.  Warning, these may compile large string
    121  1.110   thorpej # tables into the kernel!
    122   1.63   thorpej options 	EISAVERBOSE	# verbose EISA device messages
    123   1.63   thorpej options 	PCIVERBOSE	# verbose PCI device messages
    124   1.98     mikel options 	SCSIVERBOSE	# verbose SCSI error messages
    125  1.110   thorpej #options 	PCMCIAVERBOSE	# verbose PCMCIA configuration messages
    126  1.110   thorpej 
    127  1.110   thorpej # Kernel root file system and dump configuration.
    128  1.110   thorpej config		netbsd	root on ? type ?
    129  1.110   thorpej #config		netbsd	root on sd0a type ffs
    130  1.110   thorpej #config		netbsd	root on ? type nfs
    131  1.110   thorpej 
    132  1.110   thorpej #
    133  1.110   thorpej # Device configuration
    134  1.110   thorpej #
    135   1.63   thorpej 
    136   1.31       cgd mainbus0 at root
    137   1.31       cgd 
    138  1.110   thorpej #apm0	at mainbus0			# Advanced power management
    139    1.1   mycroft 
    140  1.110   thorpej # PCI bus support
    141  1.110   thorpej pci*	at mainbus? bus ?
    142  1.110   thorpej pci*	at pchb? bus ?
    143   1.30       cgd pci*	at ppb? bus ?
    144  1.110   thorpej 
    145  1.110   thorpej # PCI devices
    146  1.110   thorpej ahc*	at pci? dev ? function ?	# Adaptec [23]94x, aic78x0 SCSI
    147  1.110   thorpej bha*	at pci? dev ? function ?	# BusLogic 9xx SCSI
    148  1.110   thorpej cy*	at pci? dev ? function ?	# Cyclades Cyclom-Y serial boards
    149  1.110   thorpej de*	at pci? dev ? function ?	# DEC 21x4x-based Ethernet
    150  1.110   thorpej en*	at pci? dev ? function ?	# ENI/Adaptec ATM
    151  1.110   thorpej ep*	at pci? dev ? function ?	# 3Com 3c59x/3c90x Ethernet
    152  1.110   thorpej fpa*	at pci? dev ? function ?	# DEC DEFPA FDDI
    153  1.110   thorpej fxp*	at pci? dev ? function ?	# Intel EtherExpress PRO 10+/100B
    154  1.110   thorpej isp*	at pci? dev ? function ?	# Qlogic ISP [12]0x0 SCSI/FibreChannel
    155  1.110   thorpej le*	at pci? dev ? function ?	# PCnet-PCI Ethernet
    156  1.110   thorpej ncr*	at pci? dev ? function ?	# NCR 53c8xx SCSI
    157  1.110   thorpej ne*	at pci? dev ? function ?	# NE2000-compatible Ethernet
    158   1.63   thorpej pchb*	at pci? dev ? function ?	# PCI-Host bridges
    159   1.63   thorpej pcib*	at pci? dev ? function ?	# PCI-ISA bridges
    160  1.110   thorpej ppb*	at pci? dev ? function ?	# PCI-PCI bridges
    161  1.110   thorpej tl*	at pci? dev ? function ?	# Thunderland-based Ethernet
    162  1.110   thorpej 
    163  1.110   thorpej # EISA bus support
    164  1.110   thorpej eisa*	at mainbus?
    165  1.110   thorpej 
    166  1.110   thorpej # EISA devices
    167  1.110   thorpej ahb*	at eisa? slot ?			# Adaptec 174[02] SCSI
    168  1.110   thorpej ahc*	at eisa? slot ?			# Adaptec 274x, aic7770 SCSI
    169  1.110   thorpej bha*	at eisa? slot ?			# BusLogic 7xx SCSI
    170  1.110   thorpej ep*	at eisa? slot ?			# 3Com 3c579 Ethernet
    171  1.110   thorpej fea*	at eisa? slot ?			# DEC DEFEA FDDI
    172  1.110   thorpej uha*	at eisa? slot ?			# UltraStor 24f SCSI
    173  1.110   thorpej 
    174  1.110   thorpej # ISA bus support
    175  1.110   thorpej isa*	at mainbus?
    176  1.110   thorpej isa*	at pcib?
    177   1.63   thorpej 
    178  1.110   thorpej # ISA devices
    179  1.110   thorpej 
    180  1.110   thorpej # ISA floppy, IDE, CD-ROM, and tape devices
    181  1.110   thorpej fdc0	at isa? port 0x3f0 irq 6 drq 2	# standard PC floppy controllers
    182  1.110   thorpej #fdc1	at isa? port 0x370 irq ? drq ?
    183  1.110   thorpej fd*	at fdc? drive ?			# the drives themselves
    184  1.110   thorpej 
    185  1.110   thorpej wdc0	at isa? port 0x1f0 irq 14	# ST506, ESDI, and IDE controllers
    186  1.110   thorpej wdc1	at isa? port 0x170 irq 15
    187  1.110   thorpej wd*	at wdc? drive ?			# the drives themsevles
    188   1.63   thorpej 
    189  1.110   thorpej #mcd0	at isa? port 0x300 irq 10	# Mitsumi CD-ROM drives
    190   1.30       cgd 
    191  1.110   thorpej # note: the wt driver conflicts unpleasantly with ed devices at the
    192  1.110   thorpej # same I/O address. The probe reprograms their eeproms. Don't
    193  1.110   thorpej # uncomment it unless you are actually using it.
    194  1.110   thorpej #wt0	at isa? port 0x300 irq 5 drq 1	# Archive and Wangtek QIC tape drives
    195    1.1   mycroft 
    196  1.110   thorpej # ISA SCSI controllers
    197  1.110   thorpej aha0	at isa? port 0x330 irq ? drq ?	# Adaptec 154[02] SCSI
    198  1.110   thorpej aha1	at isa? port 0x334 irq ? drq ?
    199  1.110   thorpej ahc0	at isa? port ? irq ?		# Adaptec 284x SCSI
    200  1.110   thorpej aic0	at isa? port 0x340 irq 11	# Adaptec 152[02] SCSI
    201  1.110   thorpej bha0	at isa? port 0x330 irq ? drq ?	# BusLogic [57]4X SCSI
    202  1.110   thorpej bha1	at isa? port 0x334 irq ? drq ?
    203  1.110   thorpej sea0	at isa? iomem 0xc8000 irq 5	# Seagate/Future Domain SCSI
    204  1.110   thorpej uha0	at isa? port 0x330 irq ? drq ?	# UltraStor [13]4f SCSI
    205  1.110   thorpej uha1	at isa? port 0x334 irq ? drq ?
    206  1.110   thorpej wds0	at isa? port 0x350 irq 15 drq 6	# WD7000 and TMC-7000 controllers
    207  1.110   thorpej wds1	at isa? port 0x358 irq 11 drq 5
    208    1.1   mycroft 
    209  1.110   thorpej # ISA serial interfaces
    210   1.89     perry #options 	COM_HAYESP		# adds Hayes ESP serial board support
    211    1.2   mycroft com0	at isa? port 0x3f8 irq 4	# standard PC serial ports
    212    1.2   mycroft com1	at isa? port 0x2f8 irq 3
    213    1.2   mycroft com2	at isa? port 0x3e8 irq 5
    214    1.2   mycroft #com3	at isa? port 0x2e8 irq 9
    215    1.8   mycroft #ast0	at isa? port 0x1a0 irq 5	# AST 4-port serial cards
    216   1.34       cgd #com*	at ast? slave ?
    217    1.8   mycroft #boca0	at isa? port 0x100 irq 5	# BOCA 8-port serial cards
    218    1.8   mycroft #com*	at boca? slave ?
    219    1.1   mycroft #rtfps0	at isa? port 0x1230 irq 10	# RT 4-port serial cards
    220    1.1   mycroft #com*	at rtfps? slave ?
    221   1.58  christos #cy0	at isa? iomem 0xd4000 irq 12	# Cyclades serial cards
    222   1.88     mikel 
    223  1.110   thorpej # ISA console.  You can only configure one of these!
    224  1.110   thorpej pc0	at isa? port 0x60 irq 1		# pccons generic PC console driver
    225  1.110   thorpej #vt0	at isa? port 0x60 irq 1		# PCVT console driver
    226    1.1   mycroft 
    227  1.110   thorpej # ISA mice
    228    1.1   mycroft lms0	at isa? port 0x23c irq 5	# Logitech bus mouse
    229    1.1   mycroft lms1	at isa? port 0x238 irq 5
    230    1.1   mycroft mms0	at isa? port 0x23c irq 5	# Microsoft InPort mouse
    231    1.1   mycroft mms1	at isa? port 0x238 irq 5
    232   1.36   thorpej #pms0	at pckbd? irq 12		# PS/2 auxiliary port mouse
    233    1.1   mycroft 
    234  1.110   thorpej # ISA audio devices
    235  1.110   thorpej gus0	at isa? port 0x220 irq 7 drq 1 drq2 6	# Gravis Ultra Sound
    236  1.110   thorpej pas0	at isa? port 0x220 irq 7 drq 1		# ProAudio Spectrum
    237  1.110   thorpej pss0	at isa? port 0x220 irq 7 drq 6  	# Personal Sound System
    238  1.110   thorpej sp0	at pss0 port 0x530 irq 10 drq 0		# 	sound port driver
    239  1.110   thorpej sb0	at isa? port 0x220 irq 7 drq 1 drq2 5	# SoundBlaster
    240  1.110   thorpej wss0	at isa? port 0x530 irq 10 drq 0	drq2 1	# Windows Sound System
    241    1.1   mycroft 
    242  1.110   thorpej # ISA network interfaces
    243  1.104   thorpej ed0	at isa? port 0x280 iomem 0xd0000 irq 9	# WD/SMC and 3C503
    244    1.4   mycroft ed1	at isa? port 0x250 iomem 0xd8000 irq 9	#   ethernet cards
    245    1.4   mycroft ed2	at isa? port 0x300 iomem 0xcc000 irq 10
    246    1.1   mycroft #eg0	at isa? ...				# 3C505 ethernet cards
    247   1.19   mycroft el0	at isa? port 0x300 irq 9		# 3C501 ethernet cards
    248    1.1   mycroft ep0	at isa? port ? irq ?			# 3C509 ethernet cards
    249  1.108   thorpej fe0	at isa? port 0x2a0 irq ?		# AT1700
    250   1.44    scottr ie0	at isa? port 0x360 iomem 0xd0000 irq 7	# StarLAN and 3C507
    251   1.44    scottr ie1	at isa? port 0x300 irq 10		# EtherExpress
    252  1.110   thorpej iy0	at isa? port ? irq ?			# EtherExpress PRO 10 ISA
    253  1.110   thorpej lc0	at isa? port ? iomem ? irq ?		# DEC EtherWORKS III (LEMAC)
    254    1.1   mycroft #le0	at isa? port 0x320 irq 10 drq 7		# IsoLan, NE2100, and DEPCA
    255  1.104   thorpej ne0	at isa? port 0x280 irq 9		# NE[12]000 ethernet cards
    256  1.104   thorpej ne1	at isa? port 0x300 irq 10
    257   1.15    brezak 
    258  1.110   thorpej # ISA PCMCIA controllers
    259  1.110   thorpej pcic0	at isa? port 0x3e0 iomem 0xd0000 iosiz 0x4000
    260  1.110   thorpej pcic1	at isa? port 0x3e2 iomem 0xd4000 iosiz 0x4000
    261  1.110   thorpej 
    262  1.110   thorpej # ISA misc. devices
    263  1.110   thorpej lpt0	at isa? port 0x378 irq 7	# standard PC parallel ports
    264  1.110   thorpej lpt1	at isa? port 0x278
    265  1.110   thorpej lpt2	at isa? port 0x3bc
    266    1.1   mycroft 
    267  1.110   thorpej # Planetconnect Satellite receiver driver.
    268  1.110   thorpej #satlink0 at isa? port 0x300 drq 1
    269   1.40     perry 
    270   1.40     perry # Joystick driver. Probe is a little strange; add only if you have one.
    271   1.40     perry #joy0	at isa? port 0x201
    272   1.68  christos 
    273  1.110   thorpej #spkr0	at pckbd? port 0x61		# PC speaker
    274  1.110   thorpej 
    275  1.110   thorpej npx0	at isa? port 0xf0 irq 13	# x86 math coprocessor
    276  1.105   thorpej 
    277  1.110   thorpej # ISA Plug-and-Play support
    278  1.110   thorpej isapnp0	at isa?
    279  1.105   thorpej 
    280  1.110   thorpej # ISA Plug-and-Play devices
    281  1.110   thorpej com*	at isapnp?			# Modems and serial boards
    282  1.110   thorpej ep*	at isapnp?			# 3Com 3c509 Ethernet
    283  1.110   thorpej guspnp*	at isapnp?			# Gravis Ultra Sound PnP audio
    284  1.110   thorpej joy*	at isapnp?			# Game ports (usually on audio cards)
    285  1.110   thorpej ne*	at isapnp?			# NE2000-compatible Ethernet
    286  1.110   thorpej sb*	at isapnp?			# SoundBlaster-compatible audio
    287  1.105   thorpej 
    288  1.110   thorpej # PCMCIA bus support
    289  1.105   thorpej pcmcia*	at pcic? controller ? socket ?
    290  1.105   thorpej 
    291  1.110   thorpej # PCMCIA devices
    292  1.110   thorpej aic*	at pcmcia? function ?		# Adaptec APA-1460 SCSI
    293  1.110   thorpej com*	at pcmcia? function ?		# Modems and serial cards
    294  1.110   thorpej ep*	at pcmcia? function ?		# 3Com 3c589 and 3c562 Ethernet
    295  1.110   thorpej ne*	at pcmcia? function ?		# NE2000-compatible Ethernet
    296  1.110   thorpej sm*	at pcmcia? function ?		# Megahertz Ethernet
    297  1.110   thorpej 
    298  1.110   thorpej # Audio support
    299  1.110   thorpej audio*	at gus?
    300  1.110   thorpej audio*	at guspnp?
    301  1.110   thorpej audio*	at pas?
    302  1.110   thorpej audio*	at sb?
    303  1.110   thorpej audio*	at sp?
    304  1.110   thorpej audio*	at wss?
    305  1.110   thorpej 
    306  1.110   thorpej # SCSI bus support
    307  1.110   thorpej scsibus* at aha?
    308  1.110   thorpej scsibus* at ahb?
    309  1.110   thorpej scsibus* at ahc?
    310  1.110   thorpej scsibus* at aic?
    311  1.110   thorpej scsibus* at bha?
    312  1.110   thorpej scsibus* at isp?
    313  1.110   thorpej scsibus* at ncr?
    314  1.110   thorpej scsibus* at sea?
    315  1.110   thorpej scsibus* at uha?
    316  1.110   thorpej scsibus* at wds?
    317  1.110   thorpej 
    318  1.110   thorpej # SCSI devices
    319  1.110   thorpej sd*	at scsibus? target ? lun ?	# SCSI disk drives
    320  1.110   thorpej st*	at scsibus? target ? lun ?	# SCSI tape drives
    321  1.110   thorpej cd*	at scsibus? target ? lun ?	# SCSI CD-ROM drives
    322  1.110   thorpej ch*	at scsibus? target ? lun ?	# SCSI autochangers
    323  1.110   thorpej ss*	at scsibus? target ? lun ?	# SCSI scanners
    324  1.110   thorpej uk*	at scsibus? target ? lun ?	# SCSI unknown
    325  1.110   thorpej 
    326  1.110   thorpej # ATAPI bus support
    327  1.110   thorpej atapibus* at wdc?
    328  1.110   thorpej 
    329  1.110   thorpej # ATAPI devices
    330  1.110   thorpej cd*	at atapibus? drive ?		# ATAPI CD-ROM drives
    331  1.110   thorpej 
    332  1.110   thorpej # MII bus support
    333  1.110   thorpej mii*	at tl?
    334  1.110   thorpej 
    335  1.110   thorpej # MII PHY devices
    336  1.110   thorpej tlphy*	at mii? dev ?			# Thunderland PHYs
    337  1.110   thorpej nsphy*	at mii? dev ?			# NS and compatible PHYs
    338   1.84   hpeyerl 
    339  1.110   thorpej # Pull in optional local configuration
    340   1.57   mycroft include	"arch/i386/conf/GENERIC.local"
    341    1.1   mycroft 
    342  1.110   thorpej # Pseudo devices
    343  1.110   thorpej pseudo-device	bpfilter	8	# Berkeley packet filter
    344  1.110   thorpej pseudo-device	ccd		4	# concatenated/striped disk devices
    345  1.110   thorpej pseudo-device	ipfilter		# IP filter (firewall) and NAT
    346  1.110   thorpej pseudo-device	loop			# network loopback
    347  1.110   thorpej pseudo-device	md		1	# memory disk device (ramdisk)
    348  1.110   thorpej pseudo-device	ppp		2	# Point-to-Point Protocol
    349  1.110   thorpej pseudo-device	pty		64	# pseudo-terminals
    350  1.103  explorer #pseudo-device	rnd			# /dev/random and in-kernel generator
    351  1.110   thorpej pseudo-device	sl		2	# Serial Line IP
    352  1.110   thorpej pseudo-device	strip		2	# Starmode Radio IP (Metricom)
    353  1.110   thorpej pseudo-device	tb		1	# tablet line discipline
    354  1.110   thorpej pseudo-device	tun		2	# network tunneling over tty
    355  1.110   thorpej pseudo-device	vnd		4	# disk-like interface to files
    356