GENERIC_TINY revision 1.73
1# $NetBSD: GENERIC_TINY,v 1.73 2004/09/04 23:29:49 manu Exp $ 2# 3# GENERIC_TINY -- suitable default for 4M machines 4# No EISA, PCI, or SCSI. 5# 6 7include "arch/i386/conf/std.i386" 8 9#options INCLUDE_CONFIG_FILE # embed config file in kernel binary 10 11makeoptions COPTS="-Os" 12 13maxusers 8 # estimated number of users 14 15# CPU support. At least one is REQUIRED. 16options I386_CPU 17options I486_CPU 18options I586_CPU 19options I686_CPU 20 21# CPU-related options. 22options MATH_EMULATE # floating point emulation 23#options VM86 # virtual 8086 emulation 24#options USER_LDT # user-settable LDT; used by WINE 25# insert delay no-ops in interrupts; recommended on very old machines 26options PIC_DELAY 27 28# This option allows you to force a serial console at the specified 29# I/O address. see console(4) for details. 30#options CONSDEVNAME="\"com\"" 31 32# The following options override the memory sizes passed in from the boot 33# block. Use them *only* if the boot block is unable to determine the correct 34# values. Note that the BIOS may *correctly* report less than 640k of base 35# memory if the extended BIOS data area is located at the top of base memory 36# (as is the case on most recent systems). 37#options REALBASEMEM=... # size of base memory 38#options REALEXTMEM=... # size of extended memory 39 40# Save a physical page per process by not setting a kernel stack red zone. 41options NOREDZONE 42 43# Standard system options 44 45options INSECURE # disable kernel security levels - X needs this 46 47options 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 SYSVMSG # System V-like message queues 53#options SYSVSEM # System V-like semaphores 54#options SYSVSHM # System V-like memory sharing 55#options SHMMAXPGS=2048 # 2048 pages is the default 56#options P1003_1B_SEMAPHORE # p1003.1b semaphore support 57 58options NMBCLUSTERS=256 59 60#options LKM # loadable kernel modules 61 62#options USERCONF # userconf(4) support 63options PIPE_SOCKETPAIR # smaller, but slower pipe(2) 64#options SYSCTL_INCLUDE_DESCR # Include sysctl descriptions in kernel 65 66# Diagnostic/debugging support options 67#options DIAGNOSTIC # expensive kernel consistency checks 68#options DEBUG # expensive debugging checks/support 69#options KMEMSTATS # kernel memory statistics (vmstat -m) 70#options DDB # in-kernel debugger 71#options DDB_ONPANIC=1 # see also sysctl(8): `ddb.onpanic' 72#options DDB_HISTORY_SIZE=512 # enable history editing in DDB 73#options KGDB # remote debugger 74#options KGDB_DEVNAME="\"com\"",KGDB_DEVADDR=0x3f8,KGDB_DEVRATE=9600 75#makeoptions DEBUG="-g" # compile full symbol table 76 77# Compatibility options 78#options COMPAT_NOMID # NetBSD 0.8, 386BSD, and BSDI 79#options COMPAT_09 # NetBSD 0.9 80#options COMPAT_10 # NetBSD 1.0 81#options COMPAT_11 # NetBSD 1.1 82options COMPAT_12 # NetBSD 1.2, 386BSD, and BSDI 83options COMPAT_13 # NetBSD 1.3, 386BSD, and BSDI 84options COMPAT_14 # NetBSD 1.4 85options COMPAT_15 # NetBSD 1.5 86options COMPAT_16 # NetBSD 1.6 87options COMPAT_43 # 4.3BSD, 386BSD, and BSDI 88options COMPAT_386BSD_MBRPART # recognize old partition ID 89#options TCP_COMPAT_42 # 4.2BSD TCP/IP bug compat. Not recommended. 90 91#options COMPAT_SVR4 # binary compatibility with SVR4 92#options COMPAT_IBCS2 # binary compatibility with SCO and ISC 93#options COMPAT_LINUX # binary compatibility with Linux 94#options COMPAT_FREEBSD # binary compatibility with FreeBSD 95 96# File systems 97file-system FFS # UFS 98#file-system EXT2FS # second extended file system (linux) 99#file-system LFS # log-structured file system 100#file-system MFS # memory file system 101file-system NFS # Network File System client 102file-system CD9660 # ISO 9660 + Rock Ridge file system 103file-system MSDOSFS # MS-DOS file system 104#file-system FDESC # /dev/fd 105file-system KERNFS # /kern 106#file-system NULLFS # loopback file system 107#file-system PORTAL # portal filesystem (still experimental) 108#file-system PROCFS # /proc 109#file-system UMAPFS # NULLFS + uid and gid remapping 110#file-system UNION # union file system 111 112# File system options 113#options QUOTA # UFS quotas 114#options FFS_EI # FFS Endian Independant support 115#options NFSSERVER # Network File System server 116#options EXT2FS_SYSTEM_FLAGS # makes ext2fs file flags (append and 117 # immutable) behave as system flags. 118options VNODE_OP_NOINLINE # don't inline vnode op calls 119 120# Networking options 121#options GATEWAY # packet forwarding 122options INET # IP + ICMP + TCP + UDP 123#options MROUTING # IP multicast routing 124#options PIM # Protocol Independent Multicast 125#options NS # XNS 126#options NSIP # XNS tunneling over IP 127#options ISO,TPIP # OSI 128#options EON # OSI tunneling over IP 129#options CCITT,LLC,HDLC # X.25 130#options NETATALK # AppleTalk networking protocols 131#options PPP_BSDCOMP # BSD-Compress compression support for PPP 132#options PPP_DEFLATE # Deflate compression support for PPP 133#options PPP_FILTER # Active filter support for PPP (requires bpf) 134#options PFIL_HOOKS # pfil(9) packet filter hooks 135#options IPFILTER_LOG # ipmon(8) log support 136#options IPFILTER_DEFAULT_BLOCK # block all packets by default 137#options TCP_DEBUG # Record last TCP_NDEBUG packets with SO_DEBUG 138 139#options ALTQ # Manipulate network interfaces' output queues 140#options ALTQ_BLUE # Stochastic Fair Blue 141#options ALTQ_CBQ # Class-Based Queueing 142#options ALTQ_CDNR # Diffserv Traffic Conditioner 143#options ALTQ_FIFOQ # First-In First-Out Queue 144#options ALTQ_FLOWVALVE # RED/flow-valve (red-penalty-box) 145#options ALTQ_HFSC # Hierarchical Fair Service Curve 146#options ALTQ_LOCALQ # Local queueing discipline 147#options ALTQ_PRIQ # Priority Queueing 148#options ALTQ_RED # Random Early Detection 149#options ALTQ_RIO # RED with IN/OUT 150#options ALTQ_WFQ # Weighted Fair Queueing 151 152# These options enable verbose messages for several subsystems. 153# Warning, these may compile large string tables into the kernel! 154#options EISAVERBOSE # verbose EISA device autoconfig messages 155#options PCIVERBOSE # verbose PCI device autoconfig messages 156#options PCI_CONFIG_DUMP # verbosely dump PCI config space 157#options PCMCIAVERBOSE # verbose PCMCIA configuration messages 158#options SCSIVERBOSE # human readable SCSI error messages 159#options USBVERBOSE # verbose USB device autoconfig messages 160 161#options NFS_BOOT_BOOTP,NFS_BOOT_BOOTPARAM 162 163# Kernel root file system and dump configuration. 164config netbsd root on ? type ? 165#config netbsd root on sd0a type ffs 166#config netbsd root on ? type nfs 167 168# 169# wscons options 170# 171# builtin terminal emulations 172#options WSEMUL_SUN # sun terminal emulation 173options WSEMUL_VT100 # VT100 / VT220 emulation 174# customization of console and kernel output - see dev/wscons/wsdisplayvar.h 175#options WSDISPLAY_CUSTOM_OUTPUT # color customization from wsconsctl(8) 176#options WS_DEFAULT_FG=WSCOL_WHITE 177#options WS_DEFAULT_BG=WSCOL_BLACK 178#options WS_DEFAULT_COLATTR="" 179#options WS_DEFAULT_MONOATTR="" 180options WS_KERNEL_FG=WSCOL_GREEN 181#options WS_KERNEL_BG=WSCOL_BLACK 182#options WS_KERNEL_COLATTR="" 183#options WS_KERNEL_MONOATTR="" 184# customization of console border color 185#options WSDISPLAY_CUSTOM_BORDER # border customization from wsconsctl(8) 186#options WSDISPLAY_BORDER_COLOR=WSCOL_BLUE # default color 187# compatibility to other console drivers 188options WSDISPLAY_COMPAT_PCVT # emulate some ioctls 189options WSDISPLAY_COMPAT_SYSCONS # emulate some ioctls 190options WSDISPLAY_COMPAT_USL # VT handling 191options WSDISPLAY_COMPAT_RAWKBD # can get raw scancodes 192# see dev/pckbc/wskbdmap_mfii.c for implemented layouts 193#options PCKBD_LAYOUT="(KB_DE | KB_NODEAD)" 194# allocate a number of virtual screens at autoconfiguration time 195#options WSDISPLAY_DEFAULTSCREENS=4 196# use a large software cursor that doesn't blink 197options PCDISPLAY_SOFTCURSOR 198 199# 200# Device configuration 201# 202 203mainbus0 at root 204 205cpu0 at mainbus0 206 207#apm0 at mainbus0 # Advanced power management 208 209 210# Basic Bus Support 211 212# PCI bus support 213#pci* at mainbus? bus ? 214#pci* at pchb? bus ? 215#pci* at ppb? bus ? 216 217# PCI bridges 218#pchb* at pci? dev ? function ? # PCI-Host bridges 219#pceb* at pci? dev ? function ? # PCI-EISA bridges 220#pcib* at pci? dev ? function ? # PCI-ISA bridges 221#ichlpcib* at pci? dev ? function ? # Intel ICH PCI-ISA w/ watchdog and 222 # SpeedStep support 223#ppb* at pci? dev ? function ? # PCI-PCI bridges 224# XXX 'puc's aren't really bridges, but there's no better place for them here 225#puc* at pci? dev ? function ? # PCI "universal" comm. cards 226 227# EISA bus support 228#eisa0 at mainbus? 229#eisa0 at pceb? 230 231# ISA bus support 232isa0 at mainbus? 233#isa0 at pceb? 234#isa0 at pcib? 235#isa0 at ichlpcib? 236 237# PCMCIA bus support 238pcmcia* at pcic? controller ? socket ? 239 240# ISA PCMCIA controllers 241pcic0 at isa? port 0x3e0 iomem 0xd0000 iosiz 0x4000 242pcic1 at isa? port 0x3e2 iomem 0xd4000 iosiz 0x4000 243 244# ISA Plug-and-Play bus support 245#isapnp0 at isa? 246 247# ISA Plug-and-Play PCMCIA controllers 248#pcic* at isapnp? 249 250# Coprocessor Support 251 252# Math Coprocessor support 253npx0 at isa? port 0xf0 irq 13 # x86 math coprocessor 254 255# Console Devices 256 257# ISA console 258#pc0 at isa? port 0x60 irq 1 # pccons generic PC console driver 259 260# wscons 261pckbc0 at isa? # pc keyboard controller 262pckbd* at pckbc? # PC keyboard 263#pms* at pckbc? # PS/2 mouse for wsmouse 264vga0 at isa? 265#vga* at pci? dev ? function ? 266pcdisplay0 at isa? # CGA, MDA, EGA, HGA 267wsdisplay* at vga? console ? 268wsdisplay* at pcdisplay? console ? 269wskbd* at pckbd? console ? 270#wsmouse* at pms? mux 0 271 272 273#pcppi0 at isa? 274#sysbeep0 at pcppi? 275 276# Serial Devices 277 278# PCI serial interfaces 279#com* at puc? port ? # 16x50s on "universal" comm boards 280#cy* at pci? dev ? function ? # Cyclades Cyclom-Y serial boards 281 282# ISA Plug-and-Play serial interfaces 283#com* at isapnp? # Modems and serial boards 284 285# PCMCIA serial interfaces 286com* at pcmcia? function ? # Modems and serial cards 287 288# ISA serial interfaces 289#options COM_HAYESP # adds Hayes ESP serial board support 290com0 at isa? port 0x3f8 irq 4 # Standard PC serial ports 291com1 at isa? port 0x2f8 irq 3 292com2 at isa? port 0x3e8 irq 5 293#com3 at isa? port 0x2e8 irq 9 294#ast0 at isa? port 0x1a0 irq 5 # AST 4-port serial cards 295#com* at ast? slave ? 296#boca0 at isa? port 0x100 irq 5 # BOCA 8-port serial cards 297#com* at boca? slave ? 298#rtfps0 at isa? port 0x1230 irq 10 # RT 4-port serial cards 299#com* at rtfps? slave ? 300#cy0 at isa? iomem 0xd4000 irq 12 # Cyclades serial cards 301 302 303# Parallel Printer Interfaces 304 305# PCI parallel printer interfaces 306#lpt* at puc? port ? # || ports on "universal" comm boards 307 308# ISA parallel printer interfaces 309lpt0 at isa? port 0x378 irq 7 # standard PC parallel ports 310#lpt1 at isa? port 0x278 311#lpt2 at isa? port 0x3bc 312 313 314# SCSI Controllers and Devices 315 316# PCI SCSI controllers 317#ahc* at pci? dev ? function ? # Adaptec [23]94x, aic78x0 SCSI 318#dpt* at pci? dev ? function ? # DPT SmartCache/SmartRAID 319#bha* at pci? dev ? function ? # BusLogic 9xx SCSI 320#isp* at pci? dev ? function ? # Qlogic ISP [12]0x0 SCSI/FibreChannel 321#siop* at pci? dev ? function ? # NCR 53c8xx SCSI 322#esiop* at pci? dev ? function ? # NCR 53c875 SCSI and newer 323#options SIOP_SYMLED # drive the act. LED in software 324 325# EISA SCSI controllers 326#ahb* at eisa? slot ? # Adaptec 174[02] SCSI 327#ahc* at eisa? slot ? # Adaptec 274x, aic7770 SCSI 328#bha* at eisa? slot ? # BusLogic 7xx SCSI 329#dpt* at eisa? slot ? # DPT SmartCache/SmartRAID 330#uha* at eisa? slot ? # UltraStor 24f SCSI 331 332# PCMCIA SCSI controllers 333#aic* at pcmcia? function ? # Adaptec APA-1460 SCSI 334 335# ISA Plug-and-Play SCSI controllers 336#aic* at isapnp? # Adaptec AHA-1520B 337 338# ISA SCSI controllers 339#aha0 at isa? port 0x330 irq ? drq ? # Adaptec 154[02] SCSI 340#aha1 at isa? port 0x334 irq ? drq ? 341#ahc0 at isa? port ? irq ? # Adaptec 284x SCSI 342#aic0 at isa? port 0x340 irq 11 # Adaptec 152[02] SCSI 343#bha0 at isa? port 0x330 irq ? drq ? # BusLogic [457]4X SCSI 344#bha1 at isa? port 0x334 irq ? drq ? 345#sea0 at isa? iomem 0xc8000 irq 5 # Seagate/Future Domain SCSI 346#uha0 at isa? port 0x330 irq ? drq ? # UltraStor [13]4f SCSI 347#uha1 at isa? port 0x340 irq ? drq ? 348#wds0 at isa? port 0x350 irq 15 drq 6 # WD7000 and TMC-7000 controllers 349#wds1 at isa? port 0x358 irq 11 drq 5 350 351# SCSI bus support 352#scsibus* at scsi? 353 354# SCSI devices 355#sd* at scsibus? target ? lun ? # SCSI disk drives 356#st* at scsibus? target ? lun ? # SCSI tape drives 357#cd* at scsibus? target ? lun ? # SCSI CD-ROM drives 358#ch* at scsibus? target ? lun ? # SCSI autochangers 359#ss* at scsibus? target ? lun ? # SCSI scanners 360#uk* at scsibus? target ? lun ? # SCSI unknown 361 362 363# IDE and related devices 364 365# ISA Plug-and-Play IDE controllers 366#wdc* at isapnp? 367 368# PCMCIA IDE controllers 369wdc* at pcmcia? function ? 370 371# ISA IDE controllers 372wdc0 at isa? port 0x1f0 irq 14 # ST506, ESDI, and IDE controllers 373wdc1 at isa? port 0x170 irq 15 374 375# ATA (IDE) bus support 376atabus* at ata? 377 378# IDE drives 379wd* at atabus? drive ? # the drives themselves 380 381# ATAPI bus support 382atapibus* at atapi? 383 384# ATAPI devices 385cd* at atapibus? drive ? # ATAPI CD-ROM drives 386sd* at atapibus? drive ? # ATAPI disk drives 387 388 389# Miscellaneous mass storage devices 390 391# ISA floppy 392fdc0 at isa? port 0x3f0 irq 6 drq 2 # standard PC floppy controllers 393#fdc1 at isa? port 0x370 irq ? drq ? 394fd* at fdc? drive ? # the drives themselves 395# some machines need you to do this instead of fd* 396#fd0 at fdc0 drive 0 397 398# ISA CD-ROM devices 399#mcd0 at isa? port 0x300 irq 10 # Mitsumi CD-ROM drives 400 401# ISA tape devices 402# note: the wt driver conflicts unpleasantly with SMC boards at the 403# same I/O address. The probe reprograms their EEPROMs. Don't 404# uncomment it unless you are actually using it. 405#wt0 at isa? port 0x308 irq 5 drq 1 # Archive and Wangtek QIC tape drives 406 407 408# Network Interfaces 409 410# PCI network interfaces 411#en* at pci? dev ? function ? # ENI/Adaptec ATM 412#ep* at pci? dev ? function ? # 3Com 3c59x/3c90x Ethernet 413#epic* at pci? dev ? function ? # SMC EPIC/100 Ethernet 414#esh* at pci? dev ? function ? # Essential HIPPI card 415#fpa* at pci? dev ? function ? # DEC DEFPA FDDI 416#fxp* at pci? dev ? function ? # Intel EtherExpress PRO 10+/100B 417#le* at pci? dev ? function ? # PCnet-PCI Ethernet 418#ne* at pci? dev ? function ? # NE2000-compatible Ethernet 419#tl* at pci? dev ? function ? # ThunderLAN-based Ethernet 420#tlp* at pci? dev ? function ? # DECchip 21x4x and clones 421 422# EISA network interfaces 423#ep* at eisa? slot ? # 3Com 3c579 Ethernet 424#fea* at eisa? slot ? # DEC DEFEA FDDI 425 426# ISA Plug-and-Play network interfaces 427#ep* at isapnp? # 3Com 3c509 Ethernet 428#ne* at isapnp? # NE2000-compatible Ethernet 429 430# PCMCIA network interfaces 431ep* at pcmcia? function ? # 3Com 3c589 and 3c562 Ethernet 432mbe* at pcmcia? function ? # MB8696x based Ethernet 433ne* at pcmcia? function ? # NE2000-compatible Ethernet 434sm* at pcmcia? function ? # Megahertz Ethernet 435 436# ISA network interfaces 437ate0 at isa? port 0x2a0 irq ? # AT1700 438ec0 at isa? port 0x250 iomem 0xd8000 irq 9 # 3Com 3c503 Ethernet 439eg0 at isa? port 0x280 irq 9 # 3C505 ethernet cards 440el0 at isa? port 0x300 irq 9 # 3C501 ethernet cards 441ep0 at isa? port ? irq ? # 3C509 ethernet cards 442ef0 at isa? port 0x360 iomem 0xd0000 irq 7 # 3C507 443ai0 at isa? port 0x360 iomem 0xd0000 irq 7 # StarLAN 444fmv0 at isa? port 0x2a0 irq ? # FMV-180 series 445ix0 at isa? port 0x300 irq 10 # EtherExpress/16 446iy0 at isa? port 0x360 irq ? # EtherExpress PRO 10 ISA 447lc0 at isa? port 0x320 iomem ? irq ? # DEC EtherWORKS III (LEMAC) 448#depca0 at isa? port 0x300 iomem 0xc8000 iosiz 0x8000 irq 5 # DEPCA 449#le* at depca? 450nele0 at isa? port 0x320 irq 9 drq 7 # NE2100 451le* at nele? 452bicc0 at isa? port 0x320 irq 10 drq 7 # BICC IsoLan 453le* at bicc? 454ne0 at isa? port 0x280 irq 9 # NE[12]000 ethernet cards 455ne1 at isa? port 0x300 irq 10 456sm0 at isa? port 0x300 irq 10 # SMC91C9x Ethernet 457we0 at isa? port 0x280 iomem 0xd0000 irq 9 # WD/SMC Ethernet 458we1 at isa? port 0x300 iomem 0xcc000 irq 10 459 460# MII bus support 461#mii* at tl? 462 463# MII PHY network interfaces 464#tlphy* at mii? dev ? # ThunderLAN PHYs 465#nsphy* at mii? dev ? # NS and compatible PHYs 466#ukphy* at mii? phy ? # generic unknown PHYs 467 468 469# USB Controller and Devices 470 471# PCI USB controllers 472#uhci* at pci? # Universal Host Controller (Intel) 473#ohci* at pci? # Open Host Controller 474 475# USB bus support 476#usb* at uhci? 477#usb* at ohci? 478 479# USB Hubs 480#uhub* at usb? 481#uhub* at uhub? port ? 482 483# USB Mice 484#ums* at uhub? port ? 485 486# USB Keyboards 487#ukbd* at uhub? port ? 488 489# USB Generic HID devices 490#uhid* at uhub? port ? 491 492# USB Printer 493#ulpt* at uhub? port ? 494 495# USB Mass Storage 496#umass* at uhub? port ? configuration ? interface ? 497#scsibus* at umass? 498#wd* at umass? 499 500# USB Ethernet adapters 501#aue* at uhub? port ? # ADMtek AN986 Pegasus based adapters 502#cue* at uhub? port ? # CATC USB-EL1201A based adapters 503#kue* at uhub? port ? # Kawasaki LSI KL5KUSB101B based adapters 504#uax* at uhub? port ? # ASIX AX88172 based adapters 505#url* at uhub? port ? # Realtek RTL8150L based adapters 506 507# Y@P firmware loader 508#uyap* at uhub? port ? 509 510# USB Generic driver 511#ugen* at uhub? port ? 512 513# Audio Devices 514 515# PCI audio devices 516#eap* at pci? dev ? function ? # Ensoniq AudioPCI 517 518# ISA Plug-and-Play audio devices 519#guspnp* at isapnp? # Gravis Ultra Sound PnP audio 520#sb* at isapnp? # SoundBlaster-compatible audio 521#ym* at isapnp? # Yamaha OPL3-SA3 audio 522 523# ISA audio devices 524#aria0 at isa? port 0x290 irq 10 # Aria 525#gus0 at isa? port 0x220 irq 7 drq 1 drq2 6 # Gravis Ultra Sound 526#pas0 at isa? port 0x220 irq 7 drq 1 # ProAudio Spectrum 527#pss0 at isa? port 0x220 irq 7 drq 6 # Personal Sound System 528#sp0 at pss0 port 0x530 irq 10 drq 0 # sound port driver 529#sb0 at isa? port 0x220 irq 5 drq 1 drq2 5 # SoundBlaster 530#wss0 at isa? port 0x530 irq 10 drq 0 drq2 1 # Windows Sound System 531 532# Audio support 533#audio* at audiobus? 534 535# The spkr driver provides a simple tone interface to the built in speaker. 536#spkr0 at pcppi? # PC speaker 537 538 539# Joysticks 540 541# ISA Plug-and-Play joysticks 542#joy* at isapnp? # Game ports (usually on audio cards) 543 544# ISA joysticks. Probe is a little strange; add only if you have one. 545#joy0 at isa? port 0x201 546 547 548# Miscellaneous Devices 549 550# Planetconnect Satellite receiver driver. 551#satlink0 at isa? port 0x300 drq 1 552 553 554# Pull in optional local configuration 555include "arch/i386/conf/GENERIC.local" 556 557 558# Pseudo-Devices 559 560# disk/mass storage pseudo-devices 561#pseudo-device ccd 4 # concatenated/striped disk devices 562#pseudo-device md 1 # memory disk device (ramdisk) 563pseudo-device vnd 4 # disk-like interface to files 564 565# network pseudo-devices 566pseudo-device bpfilter 8 # Berkeley packet filter 567pseudo-device bridge # simple inter-network bridging 568pseudo-device ipfilter # IP filter (firewall) and NAT 569pseudo-device loop # network loopback 570pseudo-device ppp 2 # Point-to-Point Protocol 571pseudo-device pppoe # PPP over Ethernet (RFC 2516) 572#pseudo-device sl 2 # Serial Line IP 573#pseudo-device strip 2 # Starmode Radio IP (Metricom) 574pseudo-device tun 2 # network tunneling over tty 575 576# miscellaneous pseudo-devices 577pseudo-device pty # pseudo-terminals 578#pseudo-device tb 1 # tablet line discipline 579pseudo-device rnd # /dev/random and in-kernel generator 580#options RND_COM # use "com" randomness as well (BROKEN) 581pseudo-device clockctl # user control of clock subsystem 582