GENERIC_TINY revision 1.72
1# $NetBSD: GENERIC_TINY,v 1.72 2004/07/31 17:35:19 mrg 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 NS # XNS 125#options NSIP # XNS tunneling over IP 126#options ISO,TPIP # OSI 127#options EON # OSI tunneling over IP 128#options CCITT,LLC,HDLC # X.25 129#options NETATALK # AppleTalk networking protocols 130#options PPP_BSDCOMP # BSD-Compress compression support for PPP 131#options PPP_DEFLATE # Deflate compression support for PPP 132#options PPP_FILTER # Active filter support for PPP (requires bpf) 133#options PFIL_HOOKS # pfil(9) packet filter hooks 134#options IPFILTER_LOG # ipmon(8) log support 135#options IPFILTER_DEFAULT_BLOCK # block all packets by default 136#options TCP_DEBUG # Record last TCP_NDEBUG packets with SO_DEBUG 137 138#options ALTQ # Manipulate network interfaces' output queues 139#options ALTQ_BLUE # Stochastic Fair Blue 140#options ALTQ_CBQ # Class-Based Queueing 141#options ALTQ_CDNR # Diffserv Traffic Conditioner 142#options ALTQ_FIFOQ # First-In First-Out Queue 143#options ALTQ_FLOWVALVE # RED/flow-valve (red-penalty-box) 144#options ALTQ_HFSC # Hierarchical Fair Service Curve 145#options ALTQ_LOCALQ # Local queueing discipline 146#options ALTQ_PRIQ # Priority Queueing 147#options ALTQ_RED # Random Early Detection 148#options ALTQ_RIO # RED with IN/OUT 149#options ALTQ_WFQ # Weighted Fair Queueing 150 151# These options enable verbose messages for several subsystems. 152# Warning, these may compile large string tables into the kernel! 153#options EISAVERBOSE # verbose EISA device autoconfig messages 154#options PCIVERBOSE # verbose PCI device autoconfig messages 155#options PCI_CONFIG_DUMP # verbosely dump PCI config space 156#options PCMCIAVERBOSE # verbose PCMCIA configuration messages 157#options SCSIVERBOSE # human readable SCSI error messages 158#options USBVERBOSE # verbose USB device autoconfig messages 159 160#options NFS_BOOT_BOOTP,NFS_BOOT_BOOTPARAM 161 162# Kernel root file system and dump configuration. 163config netbsd root on ? type ? 164#config netbsd root on sd0a type ffs 165#config netbsd root on ? type nfs 166 167# 168# wscons options 169# 170# builtin terminal emulations 171#options WSEMUL_SUN # sun terminal emulation 172options WSEMUL_VT100 # VT100 / VT220 emulation 173# customization of console and kernel output - see dev/wscons/wsdisplayvar.h 174#options WSDISPLAY_CUSTOM_OUTPUT # color customization from wsconsctl(8) 175#options WS_DEFAULT_FG=WSCOL_WHITE 176#options WS_DEFAULT_BG=WSCOL_BLACK 177#options WS_DEFAULT_COLATTR="" 178#options WS_DEFAULT_MONOATTR="" 179options WS_KERNEL_FG=WSCOL_GREEN 180#options WS_KERNEL_BG=WSCOL_BLACK 181#options WS_KERNEL_COLATTR="" 182#options WS_KERNEL_MONOATTR="" 183# customization of console border color 184#options WSDISPLAY_CUSTOM_BORDER # border customization from wsconsctl(8) 185#options WSDISPLAY_BORDER_COLOR=WSCOL_BLUE # default color 186# compatibility to other console drivers 187options WSDISPLAY_COMPAT_PCVT # emulate some ioctls 188options WSDISPLAY_COMPAT_SYSCONS # emulate some ioctls 189options WSDISPLAY_COMPAT_USL # VT handling 190options WSDISPLAY_COMPAT_RAWKBD # can get raw scancodes 191# see dev/pckbc/wskbdmap_mfii.c for implemented layouts 192#options PCKBD_LAYOUT="(KB_DE | KB_NODEAD)" 193# allocate a number of virtual screens at autoconfiguration time 194#options WSDISPLAY_DEFAULTSCREENS=4 195# use a large software cursor that doesn't blink 196options PCDISPLAY_SOFTCURSOR 197 198# 199# Device configuration 200# 201 202mainbus0 at root 203 204cpu0 at mainbus0 205 206#apm0 at mainbus0 # Advanced power management 207 208 209# Basic Bus Support 210 211# PCI bus support 212#pci* at mainbus? bus ? 213#pci* at pchb? bus ? 214#pci* at ppb? bus ? 215 216# PCI bridges 217#pchb* at pci? dev ? function ? # PCI-Host bridges 218#pceb* at pci? dev ? function ? # PCI-EISA bridges 219#pcib* at pci? dev ? function ? # PCI-ISA bridges 220#ichlpcib* at pci? dev ? function ? # Intel ICH PCI-ISA w/ watchdog and 221 # SpeedStep support 222#ppb* at pci? dev ? function ? # PCI-PCI bridges 223# XXX 'puc's aren't really bridges, but there's no better place for them here 224#puc* at pci? dev ? function ? # PCI "universal" comm. cards 225 226# EISA bus support 227#eisa0 at mainbus? 228#eisa0 at pceb? 229 230# ISA bus support 231isa0 at mainbus? 232#isa0 at pceb? 233#isa0 at pcib? 234#isa0 at ichlpcib? 235 236# PCMCIA bus support 237pcmcia* at pcic? controller ? socket ? 238 239# ISA PCMCIA controllers 240pcic0 at isa? port 0x3e0 iomem 0xd0000 iosiz 0x4000 241pcic1 at isa? port 0x3e2 iomem 0xd4000 iosiz 0x4000 242 243# ISA Plug-and-Play bus support 244#isapnp0 at isa? 245 246# ISA Plug-and-Play PCMCIA controllers 247#pcic* at isapnp? 248 249# Coprocessor Support 250 251# Math Coprocessor support 252npx0 at isa? port 0xf0 irq 13 # x86 math coprocessor 253 254# Console Devices 255 256# ISA console 257#pc0 at isa? port 0x60 irq 1 # pccons generic PC console driver 258 259# wscons 260pckbc0 at isa? # pc keyboard controller 261pckbd* at pckbc? # PC keyboard 262#pms* at pckbc? # PS/2 mouse for wsmouse 263vga0 at isa? 264#vga* at pci? dev ? function ? 265pcdisplay0 at isa? # CGA, MDA, EGA, HGA 266wsdisplay* at vga? console ? 267wsdisplay* at pcdisplay? console ? 268wskbd* at pckbd? console ? 269#wsmouse* at pms? mux 0 270 271 272#pcppi0 at isa? 273#sysbeep0 at pcppi? 274 275# Serial Devices 276 277# PCI serial interfaces 278#com* at puc? port ? # 16x50s on "universal" comm boards 279#cy* at pci? dev ? function ? # Cyclades Cyclom-Y serial boards 280 281# ISA Plug-and-Play serial interfaces 282#com* at isapnp? # Modems and serial boards 283 284# PCMCIA serial interfaces 285com* at pcmcia? function ? # Modems and serial cards 286 287# ISA serial interfaces 288#options COM_HAYESP # adds Hayes ESP serial board support 289com0 at isa? port 0x3f8 irq 4 # Standard PC serial ports 290com1 at isa? port 0x2f8 irq 3 291com2 at isa? port 0x3e8 irq 5 292#com3 at isa? port 0x2e8 irq 9 293#ast0 at isa? port 0x1a0 irq 5 # AST 4-port serial cards 294#com* at ast? slave ? 295#boca0 at isa? port 0x100 irq 5 # BOCA 8-port serial cards 296#com* at boca? slave ? 297#rtfps0 at isa? port 0x1230 irq 10 # RT 4-port serial cards 298#com* at rtfps? slave ? 299#cy0 at isa? iomem 0xd4000 irq 12 # Cyclades serial cards 300 301 302# Parallel Printer Interfaces 303 304# PCI parallel printer interfaces 305#lpt* at puc? port ? # || ports on "universal" comm boards 306 307# ISA parallel printer interfaces 308lpt0 at isa? port 0x378 irq 7 # standard PC parallel ports 309#lpt1 at isa? port 0x278 310#lpt2 at isa? port 0x3bc 311 312 313# SCSI Controllers and Devices 314 315# PCI SCSI controllers 316#ahc* at pci? dev ? function ? # Adaptec [23]94x, aic78x0 SCSI 317#dpt* at pci? dev ? function ? # DPT SmartCache/SmartRAID 318#bha* at pci? dev ? function ? # BusLogic 9xx SCSI 319#isp* at pci? dev ? function ? # Qlogic ISP [12]0x0 SCSI/FibreChannel 320#siop* at pci? dev ? function ? # NCR 53c8xx SCSI 321#esiop* at pci? dev ? function ? # NCR 53c875 SCSI and newer 322#options SIOP_SYMLED # drive the act. LED in software 323 324# EISA SCSI controllers 325#ahb* at eisa? slot ? # Adaptec 174[02] SCSI 326#ahc* at eisa? slot ? # Adaptec 274x, aic7770 SCSI 327#bha* at eisa? slot ? # BusLogic 7xx SCSI 328#dpt* at eisa? slot ? # DPT SmartCache/SmartRAID 329#uha* at eisa? slot ? # UltraStor 24f SCSI 330 331# PCMCIA SCSI controllers 332#aic* at pcmcia? function ? # Adaptec APA-1460 SCSI 333 334# ISA Plug-and-Play SCSI controllers 335#aic* at isapnp? # Adaptec AHA-1520B 336 337# ISA SCSI controllers 338#aha0 at isa? port 0x330 irq ? drq ? # Adaptec 154[02] SCSI 339#aha1 at isa? port 0x334 irq ? drq ? 340#ahc0 at isa? port ? irq ? # Adaptec 284x SCSI 341#aic0 at isa? port 0x340 irq 11 # Adaptec 152[02] SCSI 342#bha0 at isa? port 0x330 irq ? drq ? # BusLogic [457]4X SCSI 343#bha1 at isa? port 0x334 irq ? drq ? 344#sea0 at isa? iomem 0xc8000 irq 5 # Seagate/Future Domain SCSI 345#uha0 at isa? port 0x330 irq ? drq ? # UltraStor [13]4f SCSI 346#uha1 at isa? port 0x340 irq ? drq ? 347#wds0 at isa? port 0x350 irq 15 drq 6 # WD7000 and TMC-7000 controllers 348#wds1 at isa? port 0x358 irq 11 drq 5 349 350# SCSI bus support 351#scsibus* at scsi? 352 353# SCSI devices 354#sd* at scsibus? target ? lun ? # SCSI disk drives 355#st* at scsibus? target ? lun ? # SCSI tape drives 356#cd* at scsibus? target ? lun ? # SCSI CD-ROM drives 357#ch* at scsibus? target ? lun ? # SCSI autochangers 358#ss* at scsibus? target ? lun ? # SCSI scanners 359#uk* at scsibus? target ? lun ? # SCSI unknown 360 361 362# IDE and related devices 363 364# ISA Plug-and-Play IDE controllers 365#wdc* at isapnp? 366 367# PCMCIA IDE controllers 368wdc* at pcmcia? function ? 369 370# ISA IDE controllers 371wdc0 at isa? port 0x1f0 irq 14 # ST506, ESDI, and IDE controllers 372wdc1 at isa? port 0x170 irq 15 373 374# ATA (IDE) bus support 375atabus* at ata? 376 377# IDE drives 378wd* at atabus? drive ? # the drives themselves 379 380# ATAPI bus support 381atapibus* at atapi? 382 383# ATAPI devices 384cd* at atapibus? drive ? # ATAPI CD-ROM drives 385sd* at atapibus? drive ? # ATAPI disk drives 386 387 388# Miscellaneous mass storage devices 389 390# ISA floppy 391fdc0 at isa? port 0x3f0 irq 6 drq 2 # standard PC floppy controllers 392#fdc1 at isa? port 0x370 irq ? drq ? 393fd* at fdc? drive ? # the drives themselves 394# some machines need you to do this instead of fd* 395#fd0 at fdc0 drive 0 396 397# ISA CD-ROM devices 398#mcd0 at isa? port 0x300 irq 10 # Mitsumi CD-ROM drives 399 400# ISA tape devices 401# note: the wt driver conflicts unpleasantly with SMC boards at the 402# same I/O address. The probe reprograms their EEPROMs. Don't 403# uncomment it unless you are actually using it. 404#wt0 at isa? port 0x308 irq 5 drq 1 # Archive and Wangtek QIC tape drives 405 406 407# Network Interfaces 408 409# PCI network interfaces 410#en* at pci? dev ? function ? # ENI/Adaptec ATM 411#ep* at pci? dev ? function ? # 3Com 3c59x/3c90x Ethernet 412#epic* at pci? dev ? function ? # SMC EPIC/100 Ethernet 413#esh* at pci? dev ? function ? # Essential HIPPI card 414#fpa* at pci? dev ? function ? # DEC DEFPA FDDI 415#fxp* at pci? dev ? function ? # Intel EtherExpress PRO 10+/100B 416#le* at pci? dev ? function ? # PCnet-PCI Ethernet 417#ne* at pci? dev ? function ? # NE2000-compatible Ethernet 418#tl* at pci? dev ? function ? # ThunderLAN-based Ethernet 419#tlp* at pci? dev ? function ? # DECchip 21x4x and clones 420 421# EISA network interfaces 422#ep* at eisa? slot ? # 3Com 3c579 Ethernet 423#fea* at eisa? slot ? # DEC DEFEA FDDI 424 425# ISA Plug-and-Play network interfaces 426#ep* at isapnp? # 3Com 3c509 Ethernet 427#ne* at isapnp? # NE2000-compatible Ethernet 428 429# PCMCIA network interfaces 430ep* at pcmcia? function ? # 3Com 3c589 and 3c562 Ethernet 431mbe* at pcmcia? function ? # MB8696x based Ethernet 432ne* at pcmcia? function ? # NE2000-compatible Ethernet 433sm* at pcmcia? function ? # Megahertz Ethernet 434 435# ISA network interfaces 436ate0 at isa? port 0x2a0 irq ? # AT1700 437ec0 at isa? port 0x250 iomem 0xd8000 irq 9 # 3Com 3c503 Ethernet 438eg0 at isa? port 0x280 irq 9 # 3C505 ethernet cards 439el0 at isa? port 0x300 irq 9 # 3C501 ethernet cards 440ep0 at isa? port ? irq ? # 3C509 ethernet cards 441ef0 at isa? port 0x360 iomem 0xd0000 irq 7 # 3C507 442ai0 at isa? port 0x360 iomem 0xd0000 irq 7 # StarLAN 443fmv0 at isa? port 0x2a0 irq ? # FMV-180 series 444ix0 at isa? port 0x300 irq 10 # EtherExpress/16 445iy0 at isa? port 0x360 irq ? # EtherExpress PRO 10 ISA 446lc0 at isa? port 0x320 iomem ? irq ? # DEC EtherWORKS III (LEMAC) 447#depca0 at isa? port 0x300 iomem 0xc8000 iosiz 0x8000 irq 5 # DEPCA 448#le* at depca? 449nele0 at isa? port 0x320 irq 9 drq 7 # NE2100 450le* at nele? 451bicc0 at isa? port 0x320 irq 10 drq 7 # BICC IsoLan 452le* at bicc? 453ne0 at isa? port 0x280 irq 9 # NE[12]000 ethernet cards 454ne1 at isa? port 0x300 irq 10 455sm0 at isa? port 0x300 irq 10 # SMC91C9x Ethernet 456we0 at isa? port 0x280 iomem 0xd0000 irq 9 # WD/SMC Ethernet 457we1 at isa? port 0x300 iomem 0xcc000 irq 10 458 459# MII bus support 460#mii* at tl? 461 462# MII PHY network interfaces 463#tlphy* at mii? dev ? # ThunderLAN PHYs 464#nsphy* at mii? dev ? # NS and compatible PHYs 465#ukphy* at mii? phy ? # generic unknown PHYs 466 467 468# USB Controller and Devices 469 470# PCI USB controllers 471#uhci* at pci? # Universal Host Controller (Intel) 472#ohci* at pci? # Open Host Controller 473 474# USB bus support 475#usb* at uhci? 476#usb* at ohci? 477 478# USB Hubs 479#uhub* at usb? 480#uhub* at uhub? port ? 481 482# USB Mice 483#ums* at uhub? port ? 484 485# USB Keyboards 486#ukbd* at uhub? port ? 487 488# USB Generic HID devices 489#uhid* at uhub? port ? 490 491# USB Printer 492#ulpt* at uhub? port ? 493 494# USB Mass Storage 495#umass* at uhub? port ? configuration ? interface ? 496#scsibus* at umass? 497#wd* at umass? 498 499# USB Ethernet adapters 500#aue* at uhub? port ? # ADMtek AN986 Pegasus based adapters 501#cue* at uhub? port ? # CATC USB-EL1201A based adapters 502#kue* at uhub? port ? # Kawasaki LSI KL5KUSB101B based adapters 503#uax* at uhub? port ? # ASIX AX88172 based adapters 504#url* at uhub? port ? # Realtek RTL8150L based adapters 505 506# Y@P firmware loader 507#uyap* at uhub? port ? 508 509# USB Generic driver 510#ugen* at uhub? port ? 511 512# Audio Devices 513 514# PCI audio devices 515#eap* at pci? dev ? function ? # Ensoniq AudioPCI 516 517# ISA Plug-and-Play audio devices 518#guspnp* at isapnp? # Gravis Ultra Sound PnP audio 519#sb* at isapnp? # SoundBlaster-compatible audio 520#ym* at isapnp? # Yamaha OPL3-SA3 audio 521 522# ISA audio devices 523#aria0 at isa? port 0x290 irq 10 # Aria 524#gus0 at isa? port 0x220 irq 7 drq 1 drq2 6 # Gravis Ultra Sound 525#pas0 at isa? port 0x220 irq 7 drq 1 # ProAudio Spectrum 526#pss0 at isa? port 0x220 irq 7 drq 6 # Personal Sound System 527#sp0 at pss0 port 0x530 irq 10 drq 0 # sound port driver 528#sb0 at isa? port 0x220 irq 5 drq 1 drq2 5 # SoundBlaster 529#wss0 at isa? port 0x530 irq 10 drq 0 drq2 1 # Windows Sound System 530 531# Audio support 532#audio* at audiobus? 533 534# The spkr driver provides a simple tone interface to the built in speaker. 535#spkr0 at pcppi? # PC speaker 536 537 538# Joysticks 539 540# ISA Plug-and-Play joysticks 541#joy* at isapnp? # Game ports (usually on audio cards) 542 543# ISA joysticks. Probe is a little strange; add only if you have one. 544#joy0 at isa? port 0x201 545 546 547# Miscellaneous Devices 548 549# Planetconnect Satellite receiver driver. 550#satlink0 at isa? port 0x300 drq 1 551 552 553# Pull in optional local configuration 554include "arch/i386/conf/GENERIC.local" 555 556 557# Pseudo-Devices 558 559# disk/mass storage pseudo-devices 560#pseudo-device ccd 4 # concatenated/striped disk devices 561#pseudo-device md 1 # memory disk device (ramdisk) 562pseudo-device vnd 4 # disk-like interface to files 563 564# network pseudo-devices 565pseudo-device bpfilter 8 # Berkeley packet filter 566pseudo-device bridge # simple inter-network bridging 567pseudo-device ipfilter # IP filter (firewall) and NAT 568pseudo-device loop # network loopback 569pseudo-device ppp 2 # Point-to-Point Protocol 570pseudo-device pppoe # PPP over Ethernet (RFC 2516) 571#pseudo-device sl 2 # Serial Line IP 572#pseudo-device strip 2 # Starmode Radio IP (Metricom) 573pseudo-device tun 2 # network tunneling over tty 574 575# miscellaneous pseudo-devices 576pseudo-device pty # pseudo-terminals 577#pseudo-device tb 1 # tablet line discipline 578pseudo-device rnd # /dev/random and in-kernel generator 579#options RND_COM # use "com" randomness as well (BROKEN) 580pseudo-device clockctl # user control of clock subsystem 581