xref: /netbsd/sys/arch/i386/conf/INSTALL_TINY (revision 6550d01e)
1#	$NetBSD: INSTALL_TINY,v 1.131 2010/11/23 11:14:00 hannken Exp $
2#
3#	This kernel should be derived from INSTALL (which is derived
4#	from GENERIC) with some features commented out.
5#
6#	This kernel has been optimized for space. It is targeted towards
7#	small memory machines (4M). It has no SCSI, PCI or EISA. It does
8#	have pcmcia, for old laptops.
9#
10
11include "arch/i386/conf/std.i386"
12
13#options 	INCLUDE_CONFIG_FILE	# embed config file in kernel binary
14
15makeoptions 	COPTS="-Os"		# Optimise for space. Implies -O2
16makeoptions	USE_SSP="no"
17
18# Enable the hooks used for initializing the root memory-disk.
19options 	MEMORY_DISK_HOOKS
20options 	MEMORY_DISK_IS_ROOT	# force root on memory disk
21options 	MEMORY_DISK_SERVER=0	# no userspace memory disk support
22options 	MEMORY_DISK_ROOT_SIZE=3100	# size of memory disk, in blocks
23options 	MEMORY_DISK_RBFLAGS=RB_SINGLE	# boot in single-user mode
24
25maxusers	2		# estimated number of users
26
27# CPU-related options.
28#options 	VM86		# virtual 8086 emulation
29#options 	USER_LDT	# user-settable LDT; used by WINE
30
31# This option allows you to force a serial console at the specified
32# I/O address.
33#options 	CONSDEVNAME="\"com\"",CONADDR=0x3f8,CONSPEED=9600
34
35# The following options override the memory sizes passed in from the boot
36# block.  Use them *only* if the boot block is unable to determine the correct
37# values.  Note that the BIOS may *correctly* report less than 640k of base
38# memory if the extended BIOS data area is located at the top of base memory
39# (as is the case on most recent systems).
40#options 	REALBASEMEM=...	# size of base memory
41#options 	REALEXTMEM=...	# size of extended memory
42
43options 	INSECURE	# disable kernel security levels
44
45options 	RTC_OFFSET=0	# hardware clock is this many mins. west of GMT
46#options 	NTP		# NTP phase/frequency locked loop
47
48#options 	KTRACE		# system call tracing via ktrace(1)
49
50#options 	SYSVSEM		# System V-like semaphores
51#options 	SYSVSHM		# System V-like memory sharing
52
53#options 	USERCONF	# userconf(4) support
54options 	PIPE_SOCKETPAIR		# smaller, but slower pipe(2)
55#options 	SYSCTL_INCLUDE_DESCR	# Include sysctl descriptions in kernel
56no options 	EXEC_AOUT	# we don't a.out support
57
58# Diagnostic/debugging support options
59#options 	DIAGNOSTIC	# expensive kernel consistency checks
60#options 	DEBUG		# expensive debugging checks/support
61#options 	KMEMSTATS	# kernel memory statistics (vmstat -m)
62#options 	DDB		# in-kernel debugger
63#options 	DDB_ONPANIC=1	# see also sysctl(8): `ddb.onpanic'
64#options 	DDB_HISTORY_SIZE=512	# enable history editing in DDB
65#options 	KGDB		# remote debugger
66#options 	KGDB_DEVNAME="\"com\"",KGDB_DEVADDR=0x3f8,KGDB_DEVRATE=9600
67#makeoptions 	DEBUG="-g"	# compile full symbol table
68
69# Compatibility options
70#options 	COMPAT_NOMID	# NetBSD 0.8, 386BSD, and BSDI
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, 386BSD, and BSDI
75#options 	COMPAT_13	# NetBSD 1.3, 386BSD, and BSDI
76#options 	COMPAT_14	# NetBSD 1.4
77#options 	COMPAT_15	# NetBSD 1.5
78#options 	COMPAT_16	# NetBSD 1.6
79#options 	COMPAT_20	# NetBSD 2.0
80#options 	COMPAT_30	# NetBSD 3.0 compatibility.
81#options 	COMPAT_40	# NetBSD 4.0
82#options 	COMPAT_43	# 4.3BSD, 386BSD, and BSDI
83#options 	COMPAT_386BSD_MBRPART # recognize old partition ID
84#options 	TCP_COMPAT_42	# 4.2BSD TCP/IP bug compat. Not recommended.
85
86#options 	COMPAT_SVR4	# binary compatibility with SVR4
87#options 	COMPAT_IBCS2	# binary compatibility with SCO and ISC
88#options 	COMPAT_LINUX	# binary compatibility with Linux
89#options 	COMPAT_FREEBSD	# binary compatibility with FreeBSD
90options 	COMPAT_BSDPTY	# /dev/[pt]ty?? ptys.
91
92# File systems
93file-system	FFS		# UFS
94#file-system	EXT2FS		# second extended file system (linux)
95#file-system	LFS		# log-structured file system
96#file-system	MFS		# memory file system
97file-system	NFS		# Network File System client
98file-system	CD9660		# ISO 9660 + Rock Ridge file system
99file-system	MSDOSFS		# MS-DOS file system
100#file-system	FDESC		# /dev/fd
101#file-system	KERNFS		# /kern
102#file-system	NULLFS		# loopback file system
103#file-system	PROCFS		# /proc
104#file-system	UMAPFS		# NULLFS + uid and gid remapping
105#file-system	UNION		# union file system
106#file-system	PTYFS		# /dev/pts/N support
107#file-system	TMPFS		# Efficient memory file-system
108
109# Filesystem options
110#options 	QUOTA		# UFS quotas
111#options 	NFSSERVER	# Network File System server
112options 	NFS_V2_ONLY	# Exclude NFS3 code to save space
113options 	FFS_NO_SNAPSHOT	# No FFS snapshot support
114#options 	EXT2FS_SYSTEM_FLAGS # makes ext2fs file flags (append and
115				# immutable) behave as system flags.
116
117# Networking options
118#options 	GATEWAY		# packet forwarding
119options 	INET		# IP + ICMP + TCP + UDP
120#options 	MROUTING	# IP multicast routing
121#options 	PIM		# Protocol Independent Multicast
122#options 	ISO,TPIP	# OSI
123#options 	EON		# OSI tunneling over IP
124#options 	NETATALK	# AppleTalk networking protocols
125#options 	PPP_BSDCOMP	# BSD-Compress compression support for PPP
126#options 	PPP_DEFLATE	# Deflate compression support for PPP
127#options 	PPP_FILTER	# Active filter support for PPP (requires bpf)
128#options 	PFIL_HOOKS	# pfil(9) packet filter hooks
129#options 	TCP_DEBUG	# Record last TCP_NDEBUG packets with SO_DEBUG
130
131# These options enable verbose messages for several subsystems.
132# Warning, these may compile large string tables into the kernel!
133#options 	EISAVERBOSE	# verbose EISA device autoconfig messages
134#options 	PCIVERBOSE	# verbose PCI device autoconfig messages
135#options 	PCI_CONFIG_DUMP	# verbosely dump PCI config space
136#options 	PCMCIAVERBOSE	# verbose PCMCIA configuration messages
137#options 	SCSIVERBOSE	# human readable SCSI error messages
138
139# Squeeze...
140options 	NVNODE=50
141options 	NBUF=20
142options 	BUFPAGES=20
143
144# Kernel root file system and dump configuration.
145config		netbsd	root on ? type ?
146#config		netbsd	root on sd0a type ffs
147#config		netbsd	root on ? type nfs
148
149#
150# wscons options
151#
152# builtin terminal emulations
153#options 	WSEMUL_SUN		# sun terminal emulation
154options 	WSEMUL_VT100		# VT100 / VT220 emulation
155# customization of console and kernel output - see dev/wscons/wsdisplayvar.h
156#options 	WSDISPLAY_CUSTOM_OUTPUT	# color customization from wsconsctl(8)
157#options 	WS_DEFAULT_FG=WSCOL_WHITE
158#options 	WS_DEFAULT_BG=WSCOL_BLACK
159#options 	WS_DEFAULT_COLATTR="(0)"
160#options 	WS_DEFAULT_MONOATTR="(0)"
161options 	WS_KERNEL_FG=WSCOL_GREEN
162#options 	WS_KERNEL_BG=WSCOL_BLACK
163#options 	WS_KERNEL_COLATTR=""
164#options 	WS_KERNEL_MONOATTR=""
165# customization of console border color
166#options 	WSDISPLAY_CUSTOM_BORDER	# border customization from wsconsctl(8)
167#options 	WSDISPLAY_BORDER_COLOR=WSCOL_BLUE	# default color
168# compatibility to other console drivers
169options 	WSDISPLAY_COMPAT_PCVT		# emulate some ioctls
170options 	WSDISPLAY_COMPAT_SYSCONS	# emulate some ioctls
171options 	WSDISPLAY_COMPAT_USL		# VT handling
172options 	WSDISPLAY_COMPAT_RAWKBD		# can get raw scancodes
173# see dev/pckbport/wskbdmap_mfii.c for implemented layouts
174#options 	PCKBD_LAYOUT="(KB_DE | KB_NODEAD)" # for pckbd driver
175#options 	UKBD_LAYOUT="(KB_DE | KB_NODEAD)"  # for ukbd driver
176# allocate a number of virtual screens at autoconfiguration time
177#options 	WSDISPLAY_DEFAULTSCREENS=4
178# use a large software cursor that doesn't blink
179options 	PCDISPLAY_SOFTCURSOR
180
181#
182# Device configuration
183#
184
185#apm0	at mainbus0			# Advanced power management
186
187
188# Basic Bus Support
189
190# PCI bus support
191#pci*	at mainbus? bus ?
192#pci*	at pchb? bus ?
193#pci*	at ppb? bus ?
194
195# PCI bridges
196#pchb*	at pci? dev ? function ?	# PCI-Host bridges
197#pceb*	at pci? dev ? function ?	# PCI-EISA bridges
198#pcib*	at pci? dev ? function ?	# PCI-ISA bridges
199#ppb*	at pci? dev ? function ?	# PCI-PCI bridges
200# XXX 'puc's aren't really bridges, but there's no better place for them here
201#puc*	at pci? dev ? function ?	# PCI "universal" comm. cards
202
203# As well as 5 and 7, avoid irq 4 and 3 because we do not probe com* here
204options 	PCIC_ISA_INTR_ALLOC_MASK=0xff47
205
206# PCMCIA bus support
207pcmcia* at pcic? controller ? socket ?
208#pcmcia* at tcic? controller ? socket ?
209
210# ISA PCMCIA controllers
211pcic0	at isa? port 0x3e0 iomem 0xd0000 iosiz 0x10000
212pcic1	at isa? port 0x3e2 iomem 0xe0000 iosiz 0x4000
213
214# EISA bus support
215#eisa0	at mainbus?
216#eisa0	at pceb?
217
218# ISA bus support
219isa0	at mainbus?
220#isa0	at pceb?
221#isa0	at pcib?
222
223# ISA Plug-and-Play bus support
224#isapnp0 at isa?
225
226# Coprocessor Support
227
228# Math Coprocessor support
229npx0	at isa? port 0xf0 irq 13	# x86 math coprocessor
230
231
232# Console Devices
233
234# wscons
235pckbc0		at isa?			# PC keyboard controller
236pckbd*		at pckbc?		# PC keyboard
237pcdisplay0 	at isa?			# CGA, MDA, EGA, HGA
238wsdisplay* 	at pcdisplay? console ?
239wskbd*		at pckbd? console ?
240#wsmouse*	at pms? mux 0
241
242# Serial Devices
243
244# PCI serial interfaces
245#com*	at puc? port ?			# 16x50s on "universal" comm boards
246#cy*	at pci? dev ? function ?	# Cyclades Cyclom-Y serial boards
247
248# ISA Plug-and-Play serial interfaces
249#com*	at isapnp?			# Modems and serial boards
250
251# PCMCIA serial interfaces
252#com*	at pcmcia? function ?		# Modems and serial cards
253
254# ISA serial interfaces
255#options 	COM_HAYESP		# adds Hayes ESP serial board support
256#com0	at isa? port 0x3f8 irq 4	# Standard PC serial ports
257#com1	at isa? port 0x2f8 irq 3
258#com2	at isa? port 0x3e8 irq 5
259#com3	at isa? port 0x2e8 irq 9
260#ast0	at isa? port 0x1a0 irq 5	# AST 4-port serial cards
261#com*	at ast? slave ?
262#boca0	at isa? port 0x100 irq 5	# BOCA 8-port serial cards
263#com*	at boca? slave ?
264#rtfps0	at isa? port 0x1230 irq 10	# RT 4-port serial cards
265#com*	at rtfps? slave ?
266#cy0	at isa? iomem 0xd4000 irq 12	# Cyclades serial cards
267
268
269# Parallel Printer Interfaces
270
271# PCI parallel printer interfaces
272#lpt*	at puc? port ?			# || ports on "universal" comm boards
273
274# ISA parallel printer interfaces
275#lpt0	at isa? port 0x378 irq 7	# standard PC parallel ports
276#lpt1	at isa? port 0x278
277#lpt2	at isa? port 0x3bc
278
279# I2O devices
280#iop*	at pci? dev ? function ?	# I/O processor
281#iopsp*	at iop? tid ?			# SCSI/FC-AL ports
282#ld*	at iop? tid ?			# block devices
283#dpti*	at iop? tid 0			# DPT/Adaptec control interface
284
285# SCSI Controllers and Devices
286
287# PCI SCSI controllers
288#ahc*	at pci? dev ? function ?	# Adaptec [23]94x, aic78x0 SCSI
289#bha*	at pci? dev ? function ?	# BusLogic 9xx SCSI
290#dpt*	at pci? dev ? function ?	# DPT SmartCache/SmartRAID
291#isp*	at pci? dev ? function ?	# Qlogic ISP [12]0x0 SCSI/FibreChannel
292#mly*	at pci? dev ? function ?	# Mylex AcceleRAID and eXtremeRAID
293#siop*	at pci? dev ? function ?	# NCR 53c8xx SCSI
294
295# EISA SCSI controllers
296#ahb*	at eisa? slot ?			# Adaptec 174[02] SCSI
297#ahc*	at eisa? slot ?			# Adaptec 274x, aic7770 SCSI
298#bha*	at eisa? slot ?			# BusLogic 7xx SCSI
299#dpt*	at eisa? slot ?			# DPT SmartCache/SmartRAID
300#uha*	at eisa? slot ?			# UltraStor 24f SCSI
301
302# PCMCIA SCSI controllers
303#aic*	at pcmcia? function ?		# Adaptec APA-1460 SCSI
304
305# ISA Plug-and-Play SCSI controllers
306#aic*	at isapnp?			# Adaptec AHA-1520B
307
308# ISA SCSI controllers
309#aha0	at isa? port 0x330 irq ? drq ?	# Adaptec 154[02] SCSI
310#aha1	at isa? port 0x334 irq ? drq ?
311#ahc0	at isa? port ? irq ?		# Adaptec 284x SCSI
312#aic0	at isa? port 0x340 irq 11	# Adaptec 152[02] SCSI
313#bha0	at isa? port 0x330 irq ? drq ?	# BusLogic [457]4X SCSI
314#bha1	at isa? port 0x334 irq ? drq ?
315# The "nca" and "dpt" probes might give false hits or hang your machine.
316#dpt0	at isa? port 0x170 irq ? drq ?	# DPT SmartCache/SmartRAID
317#nca0	at isa? port 0x360 irq 15	# Port-mapped NCR 53C80 controller
318#nca1	at isa? iomem 0xd8000 irq 5	# Memory-mapped controller (T128, etc.)
319#sea0	at isa? iomem 0xc8000 irq 5	# Seagate/Future Domain SCSI
320#uha0	at isa? port 0x330 irq ? drq ?	# UltraStor [13]4f SCSI
321#uha1	at isa? port 0x340 irq ? drq ?
322#wds0	at isa? port 0x350 irq 15 drq 6	# WD7000 and TMC-7000 controllers
323#wds1	at isa? port 0x358 irq 11 drq 5
324
325# SCSI bus support
326#scsibus* at scsi?
327
328# SCSI devices
329#sd*	at scsibus? target ? lun ?	# SCSI disk drives
330#st*	at scsibus? target ? lun ?	# SCSI tape drives
331#cd*	at scsibus? target ? lun ?	# SCSI CD-ROM drives
332#ch*	at scsibus? target ? lun ?	# SCSI autochangers
333#ss*	at scsibus? target ? lun ?	# SCSI scanners
334#uk*	at scsibus? target ? lun ?	# SCSI unknown
335
336
337# RAID controllers and devices
338#aac*	at pci? dev ? function ?	# Adaptec AAC family
339#cac*	at eisa? slot ?			# Compaq EISA array controllers
340#cac*	at pci? dev ? function ?	# Compaq PCI array controllers
341#ciss*	at pci? dev ? function ?	# HP Smart Array controllers
342#icp*	at pci? dev ? function ?	# ICP-Vortex GDT & Intel RAID
343#mlx*	at pci? dev ? function ?	# Mylex DAC960 & DEC SWXCR family
344#mlx*	at eisa? slot ?			# Mylex DAC960 & DEC SWXCR family
345#twe*	at pci? dev ? function ?	# 3ware Escalade RAID controllers
346
347#ld*	at aac? unit ?			# logical disk devices
348#ld*	at cac? unit ?
349#ld*	at icp? unit ?
350#ld*	at twe? unit ?
351#ld*	at mlx? unit ?
352
353#icpsp*	at icp? unit ?			# SCSI pass-through
354
355
356# IDE and related devices
357
358# PCMCIA IDE controllers
359wdc*	at pcmcia? function ?
360
361# ST506, ESDI, and ISA IDE controllers
362# Use flags 0x01 if you want to try to use 32bits data I/O (the driver will
363# fall back to 16bits I/O if 32bits I/O are not functional).
364# Some controllers pass the initial 32bit test, but will fail later.
365wdc0	at isa? port 0x1f0 irq 14 flags 0x00
366wdc1	at isa? port 0x170 irq 15 flags 0x00
367
368# ATA (IDE) bus support
369atabus* at ata?
370
371# IDE drives
372wd*	at atabus? drive ?		# the drives themselves
373
374# ATAPI bus support
375atapibus* at atapi?
376
377# ATAPI devices
378cd*	at atapibus? drive ?		# ATAPI CD-ROM drives
379#sd*	at atapibus? drive ?		# ATAPI disk drives
380
381
382# Miscellaneous mass storage devices
383
384# ISA floppy
385fdc0	at isa? port 0x3f0 irq 6 drq 2	# standard PC floppy controllers
386#fdc1	at isa? port 0x370 irq ? drq ?
387fd*	at fdc? drive ?			# the drives themselves
388# some machines need you to do this instead of fd*
389#fd0	at fdc0 drive 0
390
391# ISA CD-ROM devices
392#mcd0	at isa? port 0x300 irq 10	# Mitsumi CD-ROM drives
393
394# ISA tape devices
395# note: the wt driver conflicts unpleasantly with ed devices at the
396# same I/O address. The probe reprograms their EEPROMs. Don't
397# uncomment it unless you are actually using it.
398#wt0	at isa? port 0x308 irq 5 drq 1	# Archive and Wangtek QIC tape drives
399
400
401# Network Interfaces
402
403# PCI network interfaces
404#en*	at pci? dev ? function ?	# ENI/Adaptec ATM
405#ep*	at pci? dev ? function ?	# 3Com 3c59x/3c90x Ethernet
406#fpa*	at pci? dev ? function ?	# DEC DEFPA FDDI
407#fxp*	at pci? dev ? function ?	# Intel EtherExpress PRO 10+/100B
408#le*	at pci? dev ? function ?	# PCnet-PCI Ethernet
409#ne*	at pci? dev ? function ?	# NE2000-compatible Ethernet
410#tl*	at pci? dev ? function ?	# ThunderLAN-based Ethernet
411#tlp*	at pci? dev ? function ?	# DECchip 21x4x and clones
412
413# EISA network interfaces
414#ep*	at eisa? slot ?			# 3Com 3c579 Ethernet
415#fea*	at eisa? slot ?			# DEC DEFEA FDDI
416
417# ISA Plug-and-Play network interfaces
418#ep*	at isapnp?			# 3Com 3c509 Ethernet
419#ne*	at isapnp?			# NE2000-compatible Ethernet
420
421# PCMCIA network interfaces
422ep*	at pcmcia? function ?		# 3Com 3c589 and 3c562 Ethernet
423mbe*	at pcmcia? function ?		# MB8696x based Ethernet
424ne*	at pcmcia? function ?		# NE2000-compatible Ethernet
425sm*	at pcmcia? function ?		# Megahertz Ethernet
426
427# ISA network interfaces
428ate0	at isa? port 0x2a0 irq ?		# AT1700
429ec0	at isa? port 0x250 iomem 0xd8000 irq 9	# 3Com 3c503 Ethernet
430#eg0	at isa? port 0x280 irq 9		# 3c505 Ethernet cards
431#el0	at isa? port 0x300 irq 9		# 3c501 Ethernet cards
432ep0	at isa? port ? irq ?			# 3c509 Ethernet cards
433#ef0	at isa? port 0x360 iomem 0xd0000 irq 7	# 3c507
434ai0	at isa? port 0x360 iomem 0xd0000 irq 7	# StarLAN
435fmv0	at isa? port 0x2a0 irq ?		# FMV-180 series
436ix0	at isa? port 0x300 irq 10		# EtherExpress/16
437iy0	at isa? port 0x360 irq ?		# EtherExpress PRO 10 ISA
438lc0	at isa? port 0x320 iomem ? irq ?	# DEC EtherWORKS III (LEMAC)
439#depca0	at isa? port 0x300 iomem 0xc8000 iosiz 0x8000 irq 5	# DEPCA
440#le*	at depca?
441#nele0	at isa? port 0x320 irq 9 drq 7		# NE2100
442#le*	at nele?
443#bicc0	at isa? port 0x320 irq 10 drq 7		# BICC IsoLan
444#le*	at bicc?
445ne0	at isa? port 0x280 irq 9		# NE[12]000 Ethernet cards
446ne1	at isa? port 0x300 irq 10
447sm0	at isa? port 0x300 irq 10		# SMC91C9x Ethernet
448we0	at isa? port 0x280 iomem 0xd0000 irq 9	# WD/SMC Ethernet
449we1	at isa? port 0x300 iomem 0xcc000 irq 10
450
451# MII bus support
452#mii*	at tl?
453
454# MII PHY network interfaces
455#tlphy*	at mii? dev ?			# ThunderLAN PHYs
456#nsphy*	at mii? dev ?			# NS and compatible PHYs
457#ukphy*	at mii? phy ?			# generic unknown PHYs
458
459
460# Audio Devices
461
462# ISA Plug-and-Play audio devices
463#guspnp* at isapnp?			# Gravis Ultra Sound PnP audio
464#sb*	at isapnp?			# SoundBlaster-compatible audio
465
466# ISA audio devices
467#gus0	at isa? port 0x220 irq 7 drq 1 drq2 6	# Gravis Ultra Sound
468#pas0	at isa? port 0x220 irq 7 drq 1		# ProAudio Spectrum
469#sb0	at isa? port 0x220 irq 7 drq 1 drq2 5	# SoundBlaster
470#wss0	at isa? port 0x530 irq 10 drq 0	drq2 1	# Windows Sound System
471
472# Audio support
473#audio*	at audiobus?
474
475# The spkr driver provides a simple tone interface to the built in speaker.
476#spkr0	at pcppi?		# PC speaker
477
478
479# Joysticks
480
481# ISA Plug-and-Play joysticks
482#joy*	at isapnp?			# Game ports (usually on audio cards)
483
484# ISA joysticks. Probe is a little strange; add only if you have one.
485#joy0	at isa? port 0x201
486
487
488# Miscellaneous Devices
489
490# Planetconnect Satellite receiver driver.
491#satlink0 at isa? port 0x300 drq 1
492
493
494# Pull in optional local configuration
495cinclude "arch/i386/conf/INSTALL.local"
496
497
498# Pseudo-Devices
499
500# disk/mass storage pseudo-devices
501#pseudo-device	ccd		4	# concatenated/striped disk devices
502#pseudo-device	fss			# file system snapshot device
503pseudo-device	md			# memory disk device (ramdisk)
504#pseudo-device	vnd			# disk-like interface to files
505
506# network pseudo-devices
507#pseudo-device	bpfilter		# Berkeley packet filter
508#pseudo-device	ipfilter		# IP filter (firewall) and NAT
509pseudo-device	loop			# network loopback
510#pseudo-device	ppp			# Point-to-Point Protocol
511#pseudo-device	sl			# Serial Line IP
512#pseudo-device	strip			# Starmode Radio IP (Metricom)
513#pseudo-device	tun			# network tunneling over tty
514
515# miscellaneous pseudo-devices
516pseudo-device	pty		2	# pseudo-terminals (Sysinst needs two)
517options 	NO_DEV_PTM
518#pseudo-device	rnd			# /dev/random and in-kernel generator
519#options 	RND_COM			# use "com" randomness as well (BROKEN)
520