INSTALL revision 1.13 1 # $NetBSD: INSTALL,v 1.13 2000/05/08 13:49:49 augustss Exp $
2 #
3 # from: NetBSD: GENERIC,v 1.84 1999/06/06 13:00:03 mrg Exp
4 #
5 # floppy install kernel. try to keep this in sync with GENERIC but
6 # leave as much disabled as possible.
7
8 include "arch/sparc/conf/std.sparc"
9
10 maxusers 32
11
12 # Enable the hooks used for initializing the root memory-disk.
13 options MEMORY_DISK_HOOKS
14 options MEMORY_DISK_IS_ROOT # force root on memory disk
15 options MEMORY_DISK_SERVER=0 # no userspace memory disk support
16 #options MINIROOTSIZE=3074 # size of memory disk, in blocks
17 options MINIROOTSIZE=3600 # 1.44M * 1.15. this must match
18 # what is `instfs' in /etc/disktab.
19
20 pseudo-device md 1 # memory disk device (ramdisk)
21
22 ## System kernel configuration. See options(4) for more detail.
23
24
25 # Options for variants of the Sun SPARC architecure.
26 # We currently support three architecture types; at least one is required.
27 #options SUN4 # sun4/100, sun4/200, sun4/300
28 options SUN4C # sun4c - SS1, 1+, 2, ELC, SLC, IPC, IPX, etc.
29 options SUN4M # sun4m - SS10, SS20, Classic, etc.
30
31 #options SUN4_MMU3L # 3-level MMU on sun4/400; (incomplete)
32
33 ## System options specific to the sparc machine type
34
35 # Blink the power LED on some machines to indicate the system load.
36 #options BLINK
37
38 ## Use a faster console than the PROM's slow drawing routines. Not needed
39 ## for headless (no framebuffer) machines.
40 #options RASTERCONSOLE # fast rasterop console
41 #options FONT_GALLANT12x22 # the console font
42 #options FONT_BOLD8x16 # a somewhat smaller font
43 #options RASTERCONSOLE_FGCOL=WSCOL_BLACK
44 #options RASTERCONSOLE_BGCOL=WSCOL_WHITE
45
46 #### System options that are the same for all ports
47
48 ## Root device configuration: change the ?'s if you are going to use a
49 ## nonstandard root partition (other than where the kernel is booted from)
50 ## and/or nonstandard root type (not ffs or nfs). Normally this can be
51 ## automagically determined at boot time.
52
53 config netbsd root on ? type ?
54
55 ## System call tracing (see ktrace(1)).
56 #options KTRACE
57
58 ## Collect statistics on kernel malloc's and free's. This does have a
59 ## significant performance hit on slower machines, so it is intended for
60 ## diagnostic use only.
61 options KMEMSTATS
62
63 ## System V compatible IPC subsystem. (msgctl(2), semctl(2), and shmctl(2))
64 #options SYSVMSG # System V message queues
65 #options SYSVSEM # System V semaphores
66 #options SYSVSHM # System V shared memory
67 #options SHMMAXPGS=1024 # 1024 pages is the default
68
69 ## Loadable kernel module support; still under development.
70 #options LKM
71
72 ## NFS boot options; default on sparc is the bootparam protocol
73 options NFS_BOOT_BOOTPARAM
74 #options NFS_BOOT_BOOTP
75 #options NFS_BOOT_DHCP
76
77 #### Debugging options
78
79 ## The DDB in-kernel debugger runs at panic (unless DDB_ONPANIC=0), or at
80 ## serial console break or keyboard reset, where the PROM would normally
81 ## intercept. DDB_HISTORY_SIZE adds up/down arrow command history.
82 options DDB # kernel dynamic debugger
83 #options DDB_HISTORY_SIZE=100 # enable history editing in DDB
84 #options DDB_ONPANIC=1 # see also sysctl(8): `ddb.onpanic'
85
86 ## You may also use gdb, on another computer connected to this machine over
87 ## a serial port. Both KGDBDEV and KGDBRATE should be specified; KGDBDEV is
88 ## a dev_t encoded device number of the serial port to use.
89 ## (0xc01 = ttya, 0xc02 = ttyb.)
90 #options KGDB # support for kernel gdb
91 #options KGDBDEV=0xc01 # kgdb device number (this sample is `ttyb')
92 #options KGDBRATE=38400 # baud rate
93
94
95 ## Compile the kernel with debugging symbols (`netbsd.gdb' is the debug file),
96 ## such that gdb(1) can be used on a kernel coredump.
97
98 #makeoptions DEBUG="-g"
99
100
101 ## Adds code to the kernel that does internal consistency checks, and will
102 ## cause the kernel to panic if corruption of internal data structures
103 ## is detected.
104 #options DIAGNOSTIC # extra kernel sanity checking
105
106 ## Enable (possibly expensive) debugging code that may also display messages
107 ## on the system console
108 #options DEBUG
109
110 #options MIIVERBOSE # verbose PHY autoconfig messages
111
112 ## Make SCSI error messages more verbose when explaining their meanings.
113 #options SCSIVERBOSE
114
115 ## `INSECURE' turns off the kernel security level (securelevel = 0 always).
116 ## This allows writing to /dev/mem, loading kernel modules while multi-user,
117 ## and other insecurities good only for development work. Do not use this
118 ## option on a production machine.
119 options INSECURE
120
121 ## Allow non-root users to grab /dev/console with programs such as xconsole.
122 ## `xconsole' therefore does not need setuid root with this option enabled.
123 #options UCONSOLE
124
125 ## `FDSCRIPTS' allows non-readable but executable scripts by providing a
126 ## pre-opened opaque file to the script interpreter. `SETUIDSCRIPTS',
127 ## which implies FDSCRIPTS, allows scripts to be set-user-id using the same
128 ## opaque file mechanism. Perl calls this "secure setuid scripts."
129
130 #options FDSCRIPTS
131 #options SETUIDSCRIPTS
132
133 ## Options for compatibility with previous releases foreign system binaries.
134 ## In the cases of COMPAT_SUNOS and COMPAT_SVR4, you may need to set up
135 ## additional user-level utilities or system configuration files. See
136 ## compat_sunos(8) and compat_svr4(8).
137
138 #options COMPAT_43 # 4.3BSD system interfaces
139 #options COMPAT_10 # NetBSD 1.0 binary compatibility
140 #options COMPAT_11 # NetBSD 1.1 binary compatibility
141 #options COMPAT_12 # NetBSD 1.2 binary compatibility
142 options COMPAT_13 # NetBSD 1.3 binary compatibility
143 options COMPAT_14 # NetBSD 1.4 binary compatibility
144 #options COMPAT_SUNOS # SunOS 4.x binary compatibility
145 #options COMPAT_SVR4 # SunOS 5.x binary compatibility
146 #options COMPAT_AOUT # NetBSD a.out compatibility
147
148 ## File systems. You probably need at least one of FFS or NFS.
149 file-system FFS # Berkeley Fast Filesystem
150 file-system NFS # Sun NFS-compatible filesystem client
151 file-system KERNFS # kernel data-structure filesystem
152 #file-system NULLFS # NULL layered filesystem
153 file-system MFS # memory-based filesystem
154 #file-system FDESC # user file descriptor filesystem
155 #file-system UMAPFS # uid/gid remapping filesystem
156 #file-system LFS # Log-based filesystem (still experimental)
157 #file-system PORTAL # portal filesystem (still experimental)
158 #file-system PROCFS # /proc
159 file-system CD9660 # ISO 9660 + Rock Ridge file system
160 #file-system UNION # union file system
161 #file-system MSDOSFS # MS-DOS FAT filesystem(s).
162
163 ## File system options.
164 #options NFSSERVER # Sun NFS-compatible filesystem server
165 #options QUOTA # FFS quotas
166 #options FFS_EI # FFS Endian Independent support
167
168 ## Network protocol support. In most environments, INET is required.
169 options INET # IP (Internet Protocol) v4
170 options TCP_COMPAT_42 # 4.2BSD IP implementation compatibility
171 #options GATEWAY # packet forwarding ("router switch")
172 #options MROUTING # packet forwarding of multicast packets
173 #options DIRECTED_BROADCAST # allow broadcasts through routers
174 #options NS # Xerox NS networking
175 #options NSIP # Xerox NS tunneling over IP
176 #options ISO,TPIP # OSI networking
177 #options EON # OSI tunneling over IP
178 #options CCITT,LLC,HDLC # X.25 packet switched protocol
179 #options NETATALK # AppleTalk (over Ethernet) protocol
180 #options NTP # Network Time Protocol in-kernel support
181 #options PPS_SYNC # Add serial line synchronization for NTP
182 #options PFIL_HOOKS # Add pfil(9) hooks, intended for custom LKMs.
183 #options IPFILTER_LOG # Add ipmon(8) logging for ipfilter device
184 #options PPP_BSDCOMP # Add BSD compression to ppp device
185 #options PPP_DEFLATE # Add deflate (libz) compression to ppp device
186 #options PPP_FILTER # Add active filters for ppp (via bpf)
187
188
189
190 #### Main bus and CPU .. all systems.
191 mainbus0 at root
192 cpu0 at mainbus0
193
194 #### Bus types found on SPARC systems.
195
196 sbus0 at mainbus0 # sun4c
197 obio0 at mainbus0 # sun4 and sun4m
198 #sparcvme0 at mainbus0 # sun4
199 iommu0 at mainbus0 # sun4m
200 sbus0 at iommu0 # sun4m
201 sparcvme0 at iommu0 # sun4m
202 #vme0 at sparcvme0 # mi VME attachment
203
204 ## SBus expander box
205 xbox* at sbus? slot ? offset ?
206 sbus* at xbox?
207
208 ## SBus to PCMCIA bridge
209 # Currently enabling nell* with audioamd* causes panic at attach
210 #nell* at sbus? slot ? offset ? # PCMCIA bridge
211 #pcmcia* at nell?
212
213 #### Standard system devices -- all required for a given architecture
214
215 ## Auxiliary system registers on sun4c and sun4m
216 auxreg0 at mainbus0 # sun4c
217 auxreg0 at obio0 # sun4m
218
219 ## Power status and control register on Sun4m systems
220 power0 at obio0
221
222 ## Mostek clock found on 4/300, sun4c, and sun4m systems.
223 ## The Mostek clock NVRAM is the "eeprom" on sun4/300 systems.
224 clock0 at mainbus0 # sun4c
225 clock0 at obio0 # sun4m
226 #clock0 at obio0 addr 0xf2000000 # sun4/300
227
228 ## Intersil clock found on 4/100 and 4/200 systems.
229 #oclock0 at obio0 addr 0xf3000000 # sun4/200
230 #oclock0 at obio0 addr 0x03000000 # sun4/100
231
232 ## Memory error registers.
233 memreg0 at mainbus0 # sun4c
234 memreg0 at obio0 # sun4m
235 #memreg0 at obio0 addr 0xf4000000 # sun4/200 and sun4/300
236 #memreg0 at obio0 addr 0x04000000 # sun4/100
237
238 ## ECC memory control
239 eccmemctl0 at mainbus0 # sun4m
240
241 ## Timer chip found on 4/300, sun4c, and sun4m systems.
242 timer0 at mainbus0 # sun4c
243 timer0 at obio0 # sun4m
244 #timer0 at obio0 addr 0xef000000 # sun4/300
245
246 ## EEPROM found on 4/100 and 4/200 systems. Note that the 4/300
247 ## doesn't use this driver; the `EEPROM' is in the NVRAM on the
248 ## Mostek clock chip on 4/300 systems.
249 #eeprom0 at obio0 addr 0xf2000000 # sun4/200
250 #eeprom0 at obio0 addr 0x02000000 # sun4/100
251
252
253 #### Serial port configuration
254
255 ## Zilog 8530 serial chips. Each has two-channels.
256 ## zs0 is ttya and ttyb. zs1 is the keyboard and mouse.
257 zs0 at mainbus0 # sun4c
258 zs0 at obio0 # sun4m
259 #zs0 at obio0 addr 0xf1000000 level 12 flags 0x103 # sun4/200 and sun4/300
260 #zs0 at obio0 addr 0x01000000 level 12 flags 0x103 # sun4/100
261 zstty0 at zs0 channel 0 # ttya
262 zstty1 at zs0 channel 1 # ttyb
263
264 zs1 at mainbus0 # sun4c
265 zs1 at obio0 # sun4m
266 #zs1 at obio0 addr 0xf0000000 level 12 flags 0x103 # sun4/200 and sun4/300
267 #zs1 at obio0 addr 0x00000000 level 12 flags 0x103 # sun4/100
268 kbd0 at zs1 channel 0 # keyboard
269 ms0 at zs1 channel 1 # mouse
270
271 #zs2 at obio0 addr 0xe0000000 level 12 flags 0x103 # sun4/300
272 #zstty2 at zs2 channel 0 # ttyc
273 #zstty3 at zs2 channel 1 # ttyd
274
275
276 ## Magma Serial/Parallel driver
277 #magma* at sbus? slot ? offset ?
278 #mtty* at magma?
279 #mbpp* at magma?
280
281 ## PCMCIA serial interfaces
282 #com* at pcmcia?
283 #pcmcom* at pcmcia?
284 #com* at pcmcom?
285
286 #### Disk controllers and disks
287
288 #
289
290 ## The following flags may be set for the NCR53c94 based esp driver:
291 ## bits 0-7: disable disconnect/reselect for the corresponding target
292 ## bits 8-15: disable synchronous negotiation for target [bit-8]
293
294 ## sun4/300, sun4c, sun4m on-board SCSI, and FSBE/S SBus SCSI cards.
295 ## Both `dma' and `esp' are needed in all cases.
296 ## Two kinds of additional SBus SCSI interfaces are available. One uses
297 ## "esp at sbus" like the sun4c on-board; the other uses "esp at dma".
298
299 ## sun4/300 SCSI - an NCR53c94 or equivalent behind
300 ## an LSI Logic DMA controller
301
302 #dma0 at obio0 addr 0xfa001000 level 4 # sun4/300
303 #esp0 at obio0 addr 0xfa000000 level 4 flags 0x0000 # sun4/300
304
305 dma0 at sbus0 slot ? offset ? # sun4c/sun4m
306 esp0 at sbus0 slot ? offset ? flags 0x0000 # sun4c
307 esp0 at dma0 flags 0x0000 # sun4m
308
309 # FSBE/S SCSI
310 dma* at sbus? slot ? offset ? # SBus
311 esp* at sbus? slot ? offset ? flags 0x0000 # SBus (older proms)
312 esp* at dma? flags 0x0000 # SBus
313
314 scsibus* at esp?
315
316 ## Qlogic ISP SBus SCSI Card
317 isp* at sbus? slot ? offset ?
318 scsibus* at isp?
319
320 ## NCR5380-based "Sun SCSI 3" VME SCSI controller.
321 ## This driver has several flags which may be enabled by OR'ing
322 ## the values and using the "flags" directive.
323 ## Valid flags are:
324 ##
325 ## 0x01 Use DMA (may be polled)
326 ## 0x02 Use DMA completion interrupts
327 ## 0x04 Allow disconnect/reselect
328 ##
329 ## E.g. the following would enable DMA, interrupts, and reselect:
330 ## si0 at vme0 addr 0x200000 irq 3 vect 0x40 flags 0x07
331 ##
332 ## By default, DMA is enabled in the driver.
333
334 #si0 at vme0 addr 0x200000 irq 2 vect 0x40
335 #scsibus* at si?
336
337 ## NCR5380-based "SCSI Weird" on-board SCSI interface found
338 ## on sun4/100 systems. The flags are the same as the "si"
339 ## controller. Note, while DMA is enabled by default, only
340 ## polled DMA works at this time, and reselects do not work
341 ## on this particular controller.
342
343 #sw0 at obio0 addr 0x0a000000 level 3
344 #scsibus* at sw?
345
346 ## PCMCIA SCSI controllers
347 #aic* at pcmcia?
348 #scsibus* at aic?
349
350
351 ## These entries find devices on all SCSI busses and assign
352 ## unit numbers dynamically.
353 sd* at scsibus? target ? lun ? # SCSI disks
354 st* at scsibus? target ? lun ? # SCSI tapes
355 cd* at scsibus? target ? lun ? # SCSI CD-ROMs
356 ch* at scsibus? target ? lun ? # SCSI changer devices
357 #ss* at scsibus? target ? lun ? # SCSI scanners
358 #uk* at scsibus? target ? lun ? # unknown SCSI
359
360
361 ## Xylogics 753 or 7053 VME SMD disk controllers and disks, found
362 ## on sun4 systems.
363 #xdc0 at vme0 addr 0xee80 irq 3 vect 0x44
364 #xdc1 at vme0 addr 0xee90 irq 3 vect 0x45
365 #xdc2 at vme0 addr 0xeea0 irq 3 vect 0x46
366 #xdc3 at vme0 addr 0xeeb0 irq 3 vect 0x47
367 #xd* at xdc? drive ?
368
369 ## Xylogics 451 or 451 VME SMD disk controllers and disks, found
370 ## on sun4 systems.
371 #xyc0 at vme0 addr 0xee40 irq 3 vect 0x48
372 #xyc1 at vme0 addr 0xee48 irq 3 vect 0x49
373 #xy* at xyc? drive ?
374
375
376 ## Floppy controller and drive found on SPARCstations.
377
378 fdc0 at mainbus0 # sun4c controller
379 fdc0 at obio0 # sun4m controller
380 fd* at fdc0 # the drive itself
381
382 ## PCMCIA IDE controllers
383 #wdc* at pcmcia?
384 #wd* at wdc?
385
386 ## A disk-like interface to files. Can be used to create floppy, CD,
387 ## miniroot images, etc.
388
389 #pseudo-device vnd 4
390
391 ## Concatenated and striped disks; with this, you can create a software-based
392 ## disk array similar to a "RAID 0" setup. See ccd(4).
393
394 #pseudo-device ccd 4
395
396 ## RAIDframe disk driver: software RAID driver. See raid(4).
397
398 #pseudo-device raid 4
399
400 ## Memory disk device, used on boot floppies with compressed
401 ## kernel-plus-root-disk images.
402
403 #pseudo-device md 1
404
405
406 #### Network interfaces
407
408 ## LANCE Ethernet - an AMD 7990 LANCE behind specialized DMA glue
409 ## Three flavors of additional SBus ethernets are available. One attaches
410 ## directly like the sun4c on-board, one uses the ledma device like the
411 ## sun4m on-board, and one uses the lebuffer device.
412
413 #le0 at obio0 addr 0xf9000000 level 6 # sun4/300
414 le0 at sbus0 slot ? offset ? # sun4c on-board
415 ledma0 at sbus0 slot ? offset ? # sun4m on-board
416 le0 at ledma0 # sun4m on-board
417 le* at sbus? slot ? offset ? # SBus
418 ledma* at sbus? slot ? offset ? # SBus
419 le* at ledma? # SBus
420 lebuffer0 at sbus? slot ? offset ? # SBus
421 le0 at lebuffer? # SBus
422 lebuffer* at sbus? slot ? offset ? # SBus
423 le* at lebuffer? # SBus
424
425
426 ## sun4/100 and sun4/200 Ethernet - an Intel 82586 on-board
427 ## or on a Multibus/VME card.
428 #ie0 at obio0 addr 0xf6000000 level 6 # sun4/200 on-board
429 #ie0 at obio0 addr 0x06000000 level 6 # sun4/100 on-board
430 #ie1 at vme0 addr 0xe88000 irq 3 vect 0x75 # VME
431 #ie2 at vme0 addr 0x31ff02 irq 3 vect 0x76 # VME
432 #ie3 at vme0 addr 0x35ff02 irq 3 vect 0x77 # VME
433 #ie4 at vme0 addr 0x2dff02 irq 3 vect 0x7c # VME
434
435 ## qec/be, qec/hme
436 qec* at sbus? slot ? offset ?
437 be* at qec?
438 qe* at qec?
439
440 # midway ATM
441 en0 at sbus? slot ? offset ?
442
443 # PCMCIA ethernet devices
444 #ep* at pcmcia?
445 #mbe* at pcmcia?
446 #ne* at pcmcia?
447 #sm* at pcmcia?
448
449 # MII/PHY support
450 #exphy* at mii? phy ? # 3Com internal PHYs
451 #icsphy* at mii? phy ? # Integrated Circuit Systems ICS1890
452 #inphy* at mii? phy ? # Intel 82555 PHYs
453 #lxtphy* at mii? phy ? # Level One LXT-970 PHYs
454 #nsphy* at mii? phy ? # NS83840 PHYs
455 #qsphy* at mii? phy ? # Quality Semiconductor QS6612 PHYs
456 #sqphy* at mii? phy ? # Seeq 80220/80221/80223 PHYs
457 #tlphy* at mii? phy ? # ThunderLAN PHYs
458 #ukphy* at mii? phy ? # generic unknown PHYs
459
460 ## Loopback network interface; required
461 pseudo-device loop
462
463 ## SLIP and CSLIP interfaces, for IP over a serial line.
464 pseudo-device sl 2
465
466 ## PPP, the successor to SLIP. See pppd(8).
467 pseudo-device ppp 2
468
469 ## Starmode Radio IP, a special hardware network device.
470 #pseudo-device strip 1
471
472 ## Network "tunnel" device, allowing protocol stacks to run in the userland.
473 ## This is used by the third-party user-mode "ppp" program, and others.
474 #pseudo-device tun 4
475
476 ## Generic L3 over IP tunnel
477 #pseudo-device gre 2 # generic L3 over IP tunnel
478
479 ## Berkeley Packet Filter, required to run RARPD. A generic C-language
480 ## interface that allows selective examining of incoming packets.
481 #pseudo-device bpfilter 8
482
483 ## IP Filter, used in firewall and NAT applications. See ipnat(8) for
484 ## one example of the use of the IP Filter.
485 #pseudo-device ipfilter
486
487
488 #### Audio and video devices
489
490 ## /dev/audio support (`audioamd' plus `audio')
491 ##
492 #audioamd0 at mainbus0 # sun4c
493 #audioamd0 at obio0 # sun4m
494 #audioamd0 at sbus0 slot ? offset ? # sun4m
495 #audio* at audioamd0
496
497 #audiocs0 at sbus0 slot ? offset ? # SUNW,CS4231
498 #audio* at audiocs0
499
500
501 ## Sun "bwtwo" black and white framebuffer, found on sun4, sun4c, and sun4m
502 ## systems. If your sun4 system has a cgfour installed in the P4 slot,
503 ## the P4 entries for "bwtwo" will attach to the overlay plane of the
504 ## "cgfour".
505
506 bwtwo0 at sbus0 slot ? offset ? # sun4c and sun4m
507 bwtwo* at sbus? slot ? offset ? #
508 #bwtwo0 at obio0 addr 0xfd000000 level 4 # sun4/200
509 #bwtwo0 at obio0 addr 0xfb300000 level 4 # sun4/300 in P4 slot
510 #bwtwo0 at obio0 addr 0x0b300000 level 4 # sun4/100 in P4 slot
511
512 ## Sun "cgtwo" VME color framebuffer
513 #cgtwo0 at vme0 addr 0x400000 irq ? vect 0xa8
514
515 ## Sun "cgthree" Sbus color framebuffer
516 cgthree0 at sbus? slot ? offset ?
517 cgthree* at sbus? slot ? offset ?
518 #cgthree0 at obio? slot ? offset ? # sun4m
519
520 ## Sun "cgfour" color framebuffer with overlay plane. See above comment
521 ## regarding overlay plane.
522 #cgfour0 at obio0 addr 0xfb300000 level 4 # sun4/300 P4
523 #cgfour0 at obio0 addr 0x0b300000 level 4 # sun4/100 P4
524
525 ## Sun "cgsix" accelerated color framebuffer.
526 cgsix0 at sbus? slot ? offset ?
527 cgsix* at sbus? slot ? offset ?
528 #cgsix0 at obio0 addr 0xfb000000 level 4 # sun4/300 P4
529 #cgsix0 at obio0 addr 0x0b000000 level 4 # sun4/100 P4
530
531 ## Sun "cgeight" 24-bit framebuffer
532 #cgeight0 at obio0 addr 0xfb300000 level 4 # sun4/300 P4
533 #cgeight0 at obio0 addr 0x0b300000 level 4 # sun4/100 P4
534
535 ## Sun "tcx" accelerated color framebuffer.
536 tcx0 at sbus? slot ? offset ?
537 tcx* at sbus? slot ? offset ?
538
539 # Sun "cgfourteen" accelerated 24-bit framebuffer.
540 cgfourteen0 at obio0 # sun4m
541
542
543 #### Other device configuration
544
545 ## Pseudo ttys, required for network logins and programs like screen.
546 ## 32 is a good number for average systems; you may have as many as you
547 ## like, though 256 is more or less the upper limit. Increasing this
548 ## number still requires you to run /dev/MAKEDEV to create the files
549 ## for the ptys.
550
551 pseudo-device pty 32 # pseudo-ttys (for network, etc.)
552
553 ## Random device, used to implement /dev/random (a source of random noise),
554 ## and generate randomness for some kernel formulae.
555
556 pseudo-device rnd
557