INSTALL_TINY revision 1.121
1#	$NetBSD: INSTALL_TINY,v 1.121 2008/11/12 12:36:02 ad 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
16
17# Enable the hooks used for initializing the root memory-disk.
18options 	MEMORY_DISK_HOOKS
19options 	MEMORY_DISK_IS_ROOT	# force root on memory disk
20options 	MEMORY_DISK_SERVER=0	# no userspace memory disk support
21options 	MEMORY_DISK_ROOT_SIZE=3100	# size of memory disk, in blocks
22
23maxusers	2		# estimated number of users
24
25# CPU-related options.
26#options 	VM86		# virtual 8086 emulation
27#options 	USER_LDT	# user-settable LDT; used by WINE
28
29# This option allows you to force a serial console at the specified
30# I/O address.
31#options 	CONSDEVNAME="\"com\"",CONADDR=0x3f8,CONSPEED=9600
32
33# Save a physical page per process by not setting a kernel stack red zone.
34options 	NOREDZONE
35
36# The following options override the memory sizes passed in from the boot
37# block.  Use them *only* if the boot block is unable to determine the correct
38# values.  Note that the BIOS may *correctly* report less than 640k of base
39# memory if the extended BIOS data area is located at the top of base memory
40# (as is the case on most recent systems).
41#options 	REALBASEMEM=...	# size of base memory
42#options 	REALEXTMEM=...	# size of extended memory
43
44options 	INSECURE	# disable kernel security levels
45
46options 	RTC_OFFSET=0	# hardware clock is this many mins. west of GMT
47#options 	NTP		# NTP phase/frequency locked loop
48
49#options 	KTRACE		# system call tracing via ktrace(1)
50
51#options 	SYSVSEM		# System V-like semaphores
52#options 	SYSVSHM		# System V-like memory sharing
53#options 	SHMMAXPGS=2048	# 2048 pages is the default
54
55
56#options 	USERCONF	# userconf(4) support
57options 	PIPE_SOCKETPAIR		# smaller, but slower pipe(2)
58#options 	SYSCTL_INCLUDE_DESCR	# Include sysctl descriptions in kernel
59no options 	EXEC_AOUT	# we don't a.out support
60
61# Diagnostic/debugging support options
62#options 	DIAGNOSTIC	# expensive kernel consistency checks
63#options 	DEBUG		# expensive debugging checks/support
64#options 	KMEMSTATS	# kernel memory statistics (vmstat -m)
65#options 	DDB		# in-kernel debugger
66#options 	DDB_ONPANIC=1	# see also sysctl(8): `ddb.onpanic'
67#options 	DDB_HISTORY_SIZE=512	# enable history editing in DDB
68#options 	KGDB		# remote debugger
69#options 	KGDB_DEVNAME="\"com\"",KGDB_DEVADDR=0x3f8,KGDB_DEVRATE=9600
70#makeoptions 	DEBUG="-g"	# compile full symbol table
71
72# Compatibility options
73#options 	COMPAT_NOMID	# NetBSD 0.8, 386BSD, and BSDI
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, 386BSD, and BSDI
78#options 	COMPAT_13	# NetBSD 1.3, 386BSD, and BSDI
79#options 	COMPAT_14	# NetBSD 1.4
80#options 	COMPAT_15	# NetBSD 1.5
81#options 	COMPAT_16	# NetBSD 1.6
82#options 	COMPAT_20	# NetBSD 2.0
83#options 	COMPAT_30	# NetBSD 3.0 compatibility.
84#options 	COMPAT_40	# NetBSD 4.0
85#options 	COMPAT_43	# 4.3BSD, 386BSD, and BSDI
86#options 	COMPAT_386BSD_MBRPART # recognize old partition ID
87#options 	TCP_COMPAT_42	# 4.2BSD TCP/IP bug compat. Not recommended.
88
89#options 	COMPAT_SVR4	# binary compatibility with SVR4
90#options 	COMPAT_IBCS2	# binary compatibility with SCO and ISC
91#options 	COMPAT_LINUX	# binary compatibility with Linux
92#options 	COMPAT_FREEBSD	# binary compatibility with FreeBSD
93options 	COMPAT_BSDPTY	# /dev/[pt]ty?? ptys.
94
95# File systems
96file-system 	FFS		# UFS
97#file-system 	EXT2FS		# second extended file system (linux)
98#file-system 	LFS		# log-structured file system
99#file-system 	MFS		# memory file system
100file-system 	NFS		# Network File System client
101file-system 	CD9660		# ISO 9660 + Rock Ridge file system
102file-system 	MSDOSFS		# MS-DOS file system
103#file-system 	FDESC		# /dev/fd
104#file-system 	KERNFS		# /kern
105#file-system 	NULLFS		# loopback file system
106#file-system 	PORTAL		# portal filesystem (still experimental)
107#file-system 	PROCFS		# /proc
108#file-system 	UMAPFS		# NULLFS + uid and gid remapping
109#file-system 	UNION		# union file system
110#file-system 	PTYFS		# /dev/pts/N support
111#file-system 	TMPFS		# Efficient memory file-system
112
113# Filesystem options
114#options 	QUOTA		# UFS quotas
115#options 	NFSSERVER	# Network File System server
116options 	NFS_V2_ONLY	# Exclude NFS3 code to save space
117options 	FFS_NO_SNAPSHOT	# No FFS snapshot support
118#options 	EXT2FS_SYSTEM_FLAGS # makes ext2fs file flags (append and
119				# immutable) behave as system flags.
120
121# Networking options
122#options 	GATEWAY		# packet forwarding
123options 	INET		# IP + ICMP + TCP + UDP
124#options 	MROUTING	# IP multicast routing
125#options 	PIM		# Protocol Independent Multicast
126#options 	ISO,TPIP	# OSI
127#options 	EON		# OSI tunneling over IP
128#options 	NETATALK	# AppleTalk networking protocols
129#options 	PPP_BSDCOMP	# BSD-Compress compression support for PPP
130#options 	PPP_DEFLATE	# Deflate compression support for PPP
131#options 	PPP_FILTER	# Active filter support for PPP (requires bpf)
132#options 	PFIL_HOOKS	# pfil(9) packet filter hooks
133#options 	TCP_DEBUG	# Record last TCP_NDEBUG packets with SO_DEBUG
134
135# These options enable verbose messages for several subsystems.
136# Warning, these may compile large string tables into the kernel!
137#options 	EISAVERBOSE	# verbose EISA device autoconfig messages
138#options 	PCIVERBOSE	# verbose PCI device autoconfig messages
139#options 	PCI_CONFIG_DUMP	# verbosely dump PCI config space
140#options 	PCMCIAVERBOSE	# verbose PCMCIA configuration messages
141#options 	SCSIVERBOSE	# human readable SCSI error messages
142
143# Squeeze...
144options 	NVNODE=50
145options 	NBUF=20
146options 	BUFPAGES=20
147options 	NMBCLUSTERS=64
148
149# Kernel root file system and dump configuration.
150config		netbsd	root on ? type ?
151#config		netbsd	root on sd0a type ffs
152#config		netbsd	root on ? type nfs
153
154#
155# wscons options
156#
157# builtin terminal emulations
158#options 	WSEMUL_SUN		# sun terminal emulation
159options 	WSEMUL_VT100		# VT100 / VT220 emulation
160# customization of console and kernel output - see dev/wscons/wsdisplayvar.h
161#options 	WSDISPLAY_CUSTOM_OUTPUT	# color customization from wsconsctl(8)
162#options 	WS_DEFAULT_FG=WSCOL_WHITE
163#options 	WS_DEFAULT_BG=WSCOL_BLACK
164#options 	WS_DEFAULT_COLATTR="(0)"
165#options 	WS_DEFAULT_MONOATTR="(0)"
166options 	WS_KERNEL_FG=WSCOL_GREEN
167#options 	WS_KERNEL_BG=WSCOL_BLACK
168#options 	WS_KERNEL_COLATTR=""
169#options 	WS_KERNEL_MONOATTR=""
170# customization of console border color
171#options 	WSDISPLAY_CUSTOM_BORDER	# border customization from wsconsctl(8)
172#options 	WSDISPLAY_BORDER_COLOR=WSCOL_BLUE	# default color
173# compatibility to other console drivers
174options 	WSDISPLAY_COMPAT_PCVT		# emulate some ioctls
175options 	WSDISPLAY_COMPAT_SYSCONS	# emulate some ioctls
176options 	WSDISPLAY_COMPAT_USL		# VT handling
177options 	WSDISPLAY_COMPAT_RAWKBD		# can get raw scancodes
178# see dev/pckbport/wskbdmap_mfii.c for implemented layouts
179#options 	PCKBD_LAYOUT="(KB_DE | KB_NODEAD)" # for pckbd driver
180#options 	UKBD_LAYOUT="(KB_DE | KB_NODEAD)"  # for ukbd driver
181# allocate a number of virtual screens at autoconfiguration time
182#options 	WSDISPLAY_DEFAULTSCREENS=4
183# use a large software cursor that doesn't blink
184options 	PCDISPLAY_SOFTCURSOR
185
186#
187# Device configuration
188#
189
190#apm0	at mainbus0			# Advanced power management
191
192
193# Basic Bus Support
194
195# PCI bus support
196#pci*	at mainbus? bus ?
197#pci*	at pchb? bus ?
198#pci*	at ppb? bus ?
199
200# PCI bridges
201#pchb*	at pci? dev ? function ?	# PCI-Host bridges
202#pceb*	at pci? dev ? function ?	# PCI-EISA bridges
203#pcib*	at pci? dev ? function ?	# PCI-ISA bridges
204#ppb*	at pci? dev ? function ?	# PCI-PCI bridges
205# XXX 'puc's aren't really bridges, but there's no better place for them here
206#puc*	at pci? dev ? function ?	# PCI "universal" comm. cards
207
208# As well as 5 and 7, avoid irq 4 and 3 because we do not probe com* here
209options 	PCIC_ISA_INTR_ALLOC_MASK=0xff47
210
211# PCMCIA bus support
212pcmcia* at pcic? controller ? socket ?
213#pcmcia* at tcic? controller ? socket ?
214
215# ISA PCMCIA controllers
216pcic0	at isa? port 0x3e0 iomem 0xd0000 iosiz 0x10000
217pcic1	at isa? port 0x3e2 iomem 0xe0000 iosiz 0x4000
218
219# EISA bus support
220#eisa0	at mainbus?
221#eisa0	at pceb?
222
223# ISA bus support
224isa0	at mainbus?
225#isa0	at pceb?
226#isa0	at pcib?
227
228# ISA Plug-and-Play bus support
229#isapnp0	at isa?
230
231# Coprocessor Support
232
233# Math Coprocessor support
234npx0	at isa? port 0xf0 irq 13	# x86 math coprocessor
235
236
237# Console Devices
238
239# wscons
240pckbc0 		at isa?			# pc keyboard controller
241pckbd* 		at pckbc?		# PC keyboard
242pcdisplay0 	at isa?			# CGA, MDA, EGA, HGA
243wsdisplay* 	at pcdisplay? console ?
244wskbd* 		at pckbd? console ?
245#wsmouse*	at pms? mux 0
246
247# Serial Devices
248
249# PCI serial interfaces
250#com*	at puc? port ?			# 16x50s on "universal" comm boards
251#cy*	at pci? dev ? function ?	# Cyclades Cyclom-Y serial boards
252
253# ISA Plug-and-Play serial interfaces
254#com*	at isapnp?			# Modems and serial boards
255
256# PCMCIA serial interfaces
257#com*	at pcmcia? function ?		# Modems and serial cards
258
259# ISA serial interfaces
260#options 	COM_HAYESP		# adds Hayes ESP serial board support
261#com0	at isa? port 0x3f8 irq 4	# Standard PC serial ports
262#com1	at isa? port 0x2f8 irq 3
263#com2	at isa? port 0x3e8 irq 5
264#com3	at isa? port 0x2e8 irq 9
265#ast0	at isa? port 0x1a0 irq 5	# AST 4-port serial cards
266#com*	at ast? slave ?
267#boca0	at isa? port 0x100 irq 5	# BOCA 8-port serial cards
268#com*	at boca? slave ?
269#rtfps0	at isa? port 0x1230 irq 10	# RT 4-port serial cards
270#com*	at rtfps? slave ?
271#cy0	at isa? iomem 0xd4000 irq 12	# Cyclades serial cards
272
273
274# Parallel Printer Interfaces
275
276# PCI parallel printer interfaces
277#lpt*	at puc? port ?			# || ports on "universal" comm boards
278
279# ISA parallel printer interfaces
280#lpt0	at isa? port 0x378 irq 7	# standard PC parallel ports
281#lpt1	at isa? port 0x278
282#lpt2	at isa? port 0x3bc
283
284# I2O devices
285#iop*	at pci? dev ? function ?	# I/O processor
286#iopsp*	at iop? tid ?			# SCSI/FC-AL ports
287#ld*	at iop? tid ?			# block devices
288#dpti*	at iop? tid 0			# DPT/Adaptec control interface
289
290# SCSI Controllers and Devices
291
292# PCI SCSI controllers
293#ahc*	at pci? dev ? function ?	# Adaptec [23]94x, aic78x0 SCSI
294#bha*	at pci? dev ? function ?	# BusLogic 9xx SCSI
295#dpt*	at pci? dev ? function ?	# DPT SmartCache/SmartRAID
296#isp*	at pci? dev ? function ?	# Qlogic ISP [12]0x0 SCSI/FibreChannel
297#mly*	at pci? dev ? function ?	# Mylex AcceleRAID and eXtremeRAID
298#siop*	at pci? dev ? function ?	# NCR 53c8xx SCSI
299
300# EISA SCSI controllers
301#ahb*	at eisa? slot ?			# Adaptec 174[02] SCSI
302#ahc*	at eisa? slot ?			# Adaptec 274x, aic7770 SCSI
303#bha*	at eisa? slot ?			# BusLogic 7xx SCSI
304#dpt*	at eisa? slot ?			# DPT SmartCache/SmartRAID
305#uha*	at eisa? slot ?			# UltraStor 24f SCSI
306
307# PCMCIA SCSI controllers
308#aic*	at pcmcia? function ?		# Adaptec APA-1460 SCSI
309
310# ISA Plug-and-Play SCSI controllers
311#aic*	at isapnp?			# Adaptec AHA-1520B
312
313# ISA SCSI controllers
314#aha0	at isa? port 0x330 irq ? drq ?	# Adaptec 154[02] SCSI
315#aha1	at isa? port 0x334 irq ? drq ?
316#ahc0	at isa? port ? irq ?		# Adaptec 284x SCSI
317#aic0	at isa? port 0x340 irq 11	# Adaptec 152[02] SCSI
318#bha0	at isa? port 0x330 irq ? drq ?	# BusLogic [457]4X SCSI
319#bha1	at isa? port 0x334 irq ? drq ?
320# The "nca" and "dpt" probes might give false hits or hang your machine.
321#dpt0	at isa? port 0x170 irq ? drq ?	# DPT SmartCache/SmartRAID
322#nca0	at isa? port 0x360 irq 15	# Port-mapped NCR 53C80 controller
323#nca1	at isa? iomem 0xd8000 irq 5	# Memory-mapped controller (T128, etc.)
324#sea0	at isa? iomem 0xc8000 irq 5	# Seagate/Future Domain SCSI
325#uha0	at isa? port 0x330 irq ? drq ?	# UltraStor [13]4f SCSI
326#uha1	at isa? port 0x340 irq ? drq ?
327#wds0	at isa? port 0x350 irq 15 drq 6	# WD7000 and TMC-7000 controllers
328#wds1	at isa? port 0x358 irq 11 drq 5
329
330# SCSI bus support
331#scsibus* at scsi?
332
333# SCSI devices
334#sd*	at scsibus? target ? lun ?	# SCSI disk drives
335#st*	at scsibus? target ? lun ?	# SCSI tape drives
336#cd*	at scsibus? target ? lun ?	# SCSI CD-ROM drives
337#ch*	at scsibus? target ? lun ?	# SCSI autochangers
338#ss*	at scsibus? target ? lun ?	# SCSI scanners
339#uk*	at scsibus? target ? lun ?	# SCSI unknown
340
341
342# RAID controllers and devices
343#aac*	at pci? dev ? function ?	# Adaptec AAC family
344#cac*	at eisa? slot ?			# Compaq EISA array controllers
345#cac*	at pci? dev ? function ?	# Compaq PCI array controllers
346#ciss*	at pci? dev ? function ?	# HP Smart Array controllers
347#icp*	at pci? dev ? function ?	# ICP-Vortex GDT & Intel RAID
348#mlx*	at pci? dev ? function ?	# Mylex DAC960 & DEC SWXCR family
349#mlx*	at eisa? slot ?			# Mylex DAC960 & DEC SWXCR family
350#twe*	at pci? dev ? function ?	# 3ware Escalade RAID controllers
351
352#ld*	at aac? unit ?			# logical disk devices
353#ld*	at cac? unit ?
354#ld*	at icp? unit ?
355#ld*	at twe? unit ?
356#ld*	at mlx? unit ?
357
358#icpsp*	at icp? unit ?			# SCSI pass-through
359
360
361# IDE and related devices
362
363# PCMCIA IDE controllers
364wdc* 	at pcmcia? function ?
365
366# ST506, ESDI, and ISA IDE controllers
367# Use flags 0x01 if you want to try to use 32bits data I/O (the driver will
368# fall back to 16bits I/O if 32bits I/O are not functional).
369# Some controllers pass the initial 32bit test, but will fail later.
370wdc0	at isa? port 0x1f0 irq 14 flags 0x00
371wdc1	at isa? port 0x170 irq 15 flags 0x00
372
373# ATA (IDE) bus support
374atabus* at ata?
375
376# IDE drives
377wd*	at atabus? drive ?		# the drives themselves
378
379# ATAPI bus support
380atapibus* at atapi?
381
382# ATAPI devices
383cd*	at atapibus? drive ?		# ATAPI CD-ROM drives
384#sd*	at atapibus? drive ?		# ATAPI disk drives
385
386
387# Miscellaneous mass storage devices
388
389# ISA floppy
390fdc0	at isa? port 0x3f0 irq 6 drq 2	# standard PC floppy controllers
391#fdc1	at isa? port 0x370 irq ? drq ?
392fd*	at fdc? drive ?			# the drives themselves
393# some machines need you to do this instead of fd*
394#fd0	at fdc0 drive 0
395
396# ISA CD-ROM devices
397#mcd0	at isa? port 0x300 irq 10	# Mitsumi CD-ROM drives
398
399# ISA tape devices
400# note: the wt driver conflicts unpleasantly with ed devices at the
401# same I/O address. The probe reprograms their EEPROMs. Don't
402# uncomment it unless you are actually using it.
403#wt0	at isa? port 0x308 irq 5 drq 1	# Archive and Wangtek QIC tape drives
404
405
406# Network Interfaces
407
408# PCI network interfaces
409#en*	at pci? dev ? function ?	# ENI/Adaptec ATM
410#ep*	at pci? dev ? function ?	# 3Com 3c59x/3c90x Ethernet
411#fpa*	at pci? dev ? function ?	# DEC DEFPA FDDI
412#fxp*	at pci? dev ? function ?	# Intel EtherExpress PRO 10+/100B
413#le*	at pci? dev ? function ?	# PCnet-PCI Ethernet
414#ne*	at pci? dev ? function ?	# NE2000-compatible Ethernet
415#tl*	at pci? dev ? function ?	# ThunderLAN-based Ethernet
416#tlp*	at pci? dev ? function ?	# DECchip 21x4x and clones
417
418# EISA network interfaces
419#ep*	at eisa? slot ?			# 3Com 3c579 Ethernet
420#fea*	at eisa? slot ?			# DEC DEFEA FDDI
421
422# ISA Plug-and-Play network interfaces
423#ep*	at isapnp?			# 3Com 3c509 Ethernet
424#ne*	at isapnp?			# NE2000-compatible Ethernet
425
426# PCMCIA network interfaces
427ep*	at pcmcia? function ?		# 3Com 3c589 and 3c562 Ethernet
428mbe*	at pcmcia? function ?		# MB8696x based Ethernet
429ne*	at pcmcia? function ?		# NE2000-compatible Ethernet
430sm*	at pcmcia? function ?		# Megahertz Ethernet
431
432# ISA network interfaces
433ate0	at isa? port 0x2a0 irq ?		# AT1700
434ec0	at isa? port 0x250 iomem 0xd8000 irq 9	# 3Com 3c503 Ethernet
435#eg0	at isa? port 0x280 irq 9		# 3C505 ethernet cards
436#el0	at isa? port 0x300 irq 9		# 3C501 ethernet cards
437ep0	at isa? port ? irq ?			# 3C509 ethernet cards
438#ef0	at isa? port 0x360 iomem 0xd0000 irq 7	# 3C507
439ai0	at isa? port 0x360 iomem 0xd0000 irq 7	# StarLAN
440fmv0	at isa? port 0x2a0 irq ?		# FMV-180 series
441ix0	at isa? port 0x300 irq 10		# EtherExpress/16
442iy0	at isa? port 0x360 irq ?		# EtherExpress PRO 10 ISA
443lc0	at isa? port 0x320 iomem ? irq ?	# DEC EtherWORKS III (LEMAC)
444#depca0	at isa? port 0x300 iomem 0xc8000 iosiz 0x8000 irq 5	# DEPCA
445#le*	at depca?
446#nele0	at isa? port 0x320 irq 9 drq 7		# NE2100
447#le*	at nele?
448#bicc0	at isa? port 0x320 irq 10 drq 7		# BICC IsoLan
449#le*	at bicc?
450ne0	at isa? port 0x280 irq 9		# NE[12]000 ethernet cards
451ne1	at isa? port 0x300 irq 10
452sm0	at isa? port 0x300 irq 10		# SMC91C9x Ethernet
453we0	at isa? port 0x280 iomem 0xd0000 irq 9	# WD/SMC Ethernet
454we1	at isa? port 0x300 iomem 0xcc000 irq 10
455
456# MII bus support
457#mii*	at tl?
458
459# MII PHY network interfaces
460#tlphy*	at mii? dev ?			# ThunderLAN PHYs
461#nsphy*	at mii? dev ?			# NS and compatible PHYs
462#ukphy*	at mii? phy ?			# generic unknown PHYs
463
464
465# Audio Devices
466
467# ISA Plug-and-Play audio devices
468#guspnp*	at isapnp?			# Gravis Ultra Sound PnP audio
469#sb*	at isapnp?			# SoundBlaster-compatible audio
470
471# ISA audio devices
472#gus0	at isa? port 0x220 irq 7 drq 1 drq2 6	# Gravis Ultra Sound
473#pas0	at isa? port 0x220 irq 7 drq 1		# ProAudio Spectrum
474#sb0	at isa? port 0x220 irq 7 drq 1 drq2 5	# SoundBlaster
475#wss0	at isa? port 0x530 irq 10 drq 0	drq2 1	# Windows Sound System
476
477# Audio support
478#audio*	at audiobus?
479
480# The spkr driver provides a simple tone interface to the built in speaker.
481#spkr0	at pcppi?		# PC speaker
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
500cinclude "arch/i386/conf/INSTALL.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	fss		4	# file system snapshot device
508pseudo-device	md		1	# memory disk device (ramdisk)
509#pseudo-device	vnd			# disk-like interface to files
510
511# network pseudo-devices
512#pseudo-device	bpfilter		# Berkeley packet filter
513#pseudo-device	ipfilter		# IP filter (firewall) and NAT
514pseudo-device	loop			# network loopback
515#pseudo-device	ppp			# Point-to-Point Protocol
516#pseudo-device	sl			# Serial Line IP
517#pseudo-device	strip			# Starmode Radio IP (Metricom)
518#pseudo-device	tun			# network tunneling over tty
519
520# miscellaneous pseudo-devices
521pseudo-device	pty		2	# pseudo-terminals (Sysinst needs two)
522options 	NO_DEV_PTM
523#pseudo-device	rnd			# /dev/random and in-kernel generator
524#options 	RND_COM			# use "com" randomness as well (BROKEN)
525