sd.4

Unix操作系统minix 2.0源码

%!PS-Adobe-1.0
%%Creator: devps (Pipeline Associates, Inc.)
%%CreationDate: Fri Sep 13 13:08:05 1996
%%Pages: (atend)
%%DocumentFonts: (atend)

/devps 180 dict def devps begin
/res 10.000000 def
/y_offset 843 def
/X{exch}bind def
/mm {transform round X round X itransform} bind def
/r{rmoveto}bind def
/m{moveto}bind def
/l{lineto}bind def
/rl{rlineto}bind def
/st{stroke}bind def
/gs{gsave}bind def
/gr{grestore}bind def
/cp{currentpoint}bind def
/np{newpath}bind def
/ct{curveto}bind def
systemdict /setpacking known
 { /savepacking currentpacking def true setpacking } if
/m0{0 0 moveto}bind def
/xc{//res div}bind def
/yc{//res neg div //y_offset add}bind def
/lc{yc X xc X l st}bind def
/mc{yc X xc X m}bind def
/el{gs /a X def a div 1 X scale cp np a xc 2 div 0 360 arc st gr}bind def
/ar{cp 7 2 roll np xc 5 1 roll atan 3 1 roll atan X arc st}bind def
/sp{yc X xc X 6 2 roll yc X xc X 6 2 roll yc X xc X 6 2 roll ct}bind def
/V{//res neg div //y_offset add
currentpoint pop X
m}bind def
/H{//res div
0 transform X round X itransform pop
currentpoint X pop
moveto}bind def
/h{//res div 0 r}bind def
/v{//res neg div 0 X r}bind def
/S{X H show}bind def
/A{H //res div 1 index stringwidth pop sub 1 index length div 0 3 2 roll ashow}bind def
/psize 10 def
/height 0 def
/cheight { height 0 ne { height } { psize } ifelse } bind def
/slant 0 def
/FF{findfont X dup 30 div 0 mm pop setlinewidth /psize X def
    [psize 0 cheight slant sin slant cos div mul cheight 0 0]
    makefont setfont}bind def
/shade{gs
 /dy X def
 /dx X def
 np m
 0 /dy rl
 /dx 0 rl
 0 /dy neg rl
 /dx neg 0 rl
 closepath
 .9 setgray
 fill
gr}bind def
1 setlinecap

/resolution res 72 mul def


/startFig {
	/SavedState save def
	userdict maxlength dict begin
	currentpoint transform

	DocumentInitState setmiterlimit setgray setdash setlinejoin setlinecap
		setlinewidth setmatrix

	itransform moveto

	/ury exch def
	/urx exch def
	/lly exch def
	/llx exch def
	/y exch 72 mul resolution div def
	/x exch 72 mul resolution div def
	
	currentpoint /cy exch def /cx exch def

	/sx x urx llx sub div def
	/sy y ury lly sub div def

	sx sy scale

	cx sx div llx sub
	cy sy div ury sub translate
	
	/DefFigCTM matrix currentmatrix def

	/initmatrix {
		DefFigCTM setmatrix
	} def
	/defaultmatrix {
		DefFigCTM exch copy
	} def

	/initgraphics {
		DocumentInitState setmiterlimit setgray setdash 
			setlinejoin setlinecap setlinewidth setmatrix
		DefFigCTM setmatrix
	} def

	/showpage {
		initgraphics
	} def

}bind  def
/clipFig {
	currentpoint 6 2 roll
	newpath 4 copy
	4 2 roll moveto
	6 -1 roll exch lineto
	exch lineto
	exch lineto
	closepath clip
	newpath
	moveto
}bind  def
/doclip { llx lly urx ury clipFig } def
/endFig {
	end SavedState restore
}bind  def
/globalstart {
	fontnum psize slant height resolution currentpoint 
	pagesave restore gsave 
}bind  def
/globalend {
	grestore moveto
	/resolution exch def /height exch def
	/slant exch def /psize exch def /fontnum exch def
	F
	/pagesave save def
}bind  def


/fontnum 1 def 
systemdict /setpacking known { savepacking setpacking} if
end
/BP{
save mark devps begin m0
/DocumentInitState [ matrix currentmatrix currentlinewidth currentlinecap
currentlinejoin currentdash currentgray currentmiterlimit ] cvx def
}bind def
/EP{
end cleartomark restore showpage}def

/Encoding-1 256 array def
0 1 255 {Encoding-1 exch /.notdef put} for
Encoding-1 8#301 StandardEncoding 8#101 26 getinterval putinterval %A-B
Encoding-1 8#341 StandardEncoding 8#141 26 getinterval putinterval %a-b
Encoding-1 8#241 StandardEncoding 8#301 16 getinterval putinterval %accents
Encoding-1 8#373 StandardEncoding 8#365 1 getinterval putinterval %dotlessi
Encoding-1
dup 8#41 /copyright put
dup 8#42 /registered put
dup 8#43 /trademark put
dup 8#44 /logicalnot put
dup 8#45 /Eth put
dup 8#46 /eth put
dup 8#47 /Thorn put
dup 8#50 /thorn put
dup 8#51 /brokenbar put
dup 8#52 /degree put
dup 8#53 /divide put
dup 8#54 /multiply put
dup 8#55 /minus put
dup 8#56 /onehalf put
dup 8#57 /onequarter put
dup 8#60 /threequarters put
dup 8#101 /Aacute put
dup 8#102 /Acircumflex put
dup 8#103 /Adieresis put
dup 8#104 /Agrave put
dup 8#105 /Aring put
dup 8#106 /Atilde put
dup 8#107 /Ccedilla put
dup 8#110 /Eacute put
dup 8#111 /Ecircumflex put
dup 8#112 /Edieresis put
dup 8#113 /Egrave put
dup 8#114 /Iacute put
dup 8#115 /Icircumflex put
dup 8#116 /Idieresis put
dup 8#117 /Igrave put
dup 8#120 /Ntilde put
dup 8#121 /Oacute put
dup 8#122 /Ocircumflex put
dup 8#123 /Odieresis put
dup 8#124 /Ograve put
dup 8#125 /Otilde put
dup 8#126 /Scaron put
dup 8#127 /Uacute put
dup 8#130 /Ucircumflex put
dup 8#131 /Udieresis put
dup 8#132 /Ugrave put
dup 8#133 /Ydieresis put
dup 8#134 /Zcaron put
dup 8#135 /aacute put
dup 8#136 /acircumflex put
dup 8#137 /adieresis put
dup 8#140 /agrave put
dup 8#141 /aring put
dup 8#142 /atilde put
dup 8#143 /ccedilla put
dup 8#144 /eacute put
dup 8#145 /ecircumflex put
dup 8#146 /edieresis put
dup 8#147 /egrave put
dup 8#150 /iacute put
dup 8#151 /icircumflex put
dup 8#152 /idieresis put
dup 8#153 /igrave put
dup 8#154 /ntilde put
dup 8#155 /oacute put
dup 8#156 /ocircumflex put
dup 8#157 /odieresis put
dup 8#160 /ograve put
dup 8#161 /otilde put
dup 8#162 /scaron put
dup 8#163 /uacute put
dup 8#164 /ucircumflex put
dup 8#165 /udieresis put
dup 8#166 /ugrave put
dup 8#167 /ydieresis put
dup 8#170 /zcaron put
pop

/Enc-dict 30 dict def
Enc-dict /tmpstr1 50 string put
Enc-dict /tmpstr2 50 string put
Enc-dict /tmpstr3 50 string dup (Encoding-) exch cvs pop put
/AEnc-def { % arguments: the original font's name, encoding nr
Enc-dict begin
tmpstr2 cvs /Enc-no exch def % Remember the number in a string
dup /OrigName exch def % remember the name
findfont dup maxlength dict /newdict exch def % get dictionary for new font
{ exch dup /FID ne
   { exch newdict 3 1 roll put }
   { pop pop } % Ignore FID
   ifelse
} forall
newdict begin
/Encoding
  tmpstr3 9 Enc-no putinterval tmpstr3 0 9 Enc-no length add getinterval
  cvn load
  def % Replace encoding
currentdict /UniqueID known
{ /UniqueID UniqueID Enc-no cvi 49999 mul add def } if % Derive New UniqueID
end % newdict
/FNlength OrigName tmpstr1 cvs length def % convert name, remember length
FNlength 1 add Enc-no length add string
dup 0 OrigName tmpstr1 cvs putinterval
dup FNlength (-) putinterval
dup FNlength 1 add Enc-no putinterval
dup 0 tmpstr1 0 FNlength getinterval putinterval % Add old name
cvn dup newdict /FontName 3 2 roll put newdict definefont
end % Enc-dict
} def
/Times-Roman 1 AEnc-def pop
/R-1{/Times-Roman-1 FF}def
/Times-Bold 1 AEnc-def pop
/B-1{/Times-Bold-1 FF}def
/R{/Times-Roman FF}def
/B{/Times-Bold FF}def
%%EndProlog
%%Page: 1 1
BP
/slant 0 def
/height 0 def
480 V
10 R
720(SD)S
857(\()S
899(4)S
957(\))S
2696(Eighth)S
(Edition)296 2989 A
4990(SD)S
5127(\()S
5169(4)S
5227(\))S
960 V
9 R
720(N)S
722(NA)S
790(AM)S
858(ME)S
940(E)S
1080 V
10 R
1080(sd,)S
1219(st,)S
1336(sg)S
10 R-1
1450(-)S
10 R
1532(SCSI)S
1770(hard)S
1974(disk)S
2166(/)S
2219(tape)S
2412(/)S
2465(generic)S
1248 V
9 R
720(D)S
722(DE)S
790(ES)S
848(SC)S
900(CR)S
962(RI)S
1024(IP)S
1057(PT)S
1109(TI)S
1167(IO)S
1200(ON)S
1268(N)S
1368 V
10 R
1080(The)S
10 B
1263(sd*)S
10 R
1408(,)S
10 B
1459(st*)S
10 R
1582(,)S
10 B
1633(sg*)S
10 R
1798(family)S
2087(of)S
2197(devices)S
2525(refer)S
2743(to)S
2847(the)S
2996(SCSI)S
3235(hard)S
3440(disk,)S
3658(tape)S
3852(and)S
4023(generic)S
4347(driver)S
4615(using)S
4859(the)S
5009(Adap-)S
1488 V
1080(tec)S
(154x)200 1229 A
1460(series)S
1721(of)S
1836(controllers.)S
2348(This)S
2557(manual)S
2883(page)S
3103(only)S
3311(describes)S
3716(the)S
3869(differences)S
4348(between)S
4714(the)S
4867(sd)S
4986(and)S
5161(hd)S
1608 V
1080(devices,)S
1432(read)S
10 B
1631(hd)S
10 R
1743(\(4\))S
1886(\256rst.)S
1776 V
1080(The)S
1269(devices)S
1603(numbers)S
1981(of)S
2098(the)S
2254(SCSI)S
2500(devices)S
2835(are)S
2992(statically)S
3389(mapped)S
3740(onto)S
3951(the)S
4107(SCSI)S
4353(targets)S
4655(0)S
4738(to)S
4849(7.)S
4982(This)S
5194(is)S
1896 V
(done)195 1080 A
1310(like)S
1496(the)S
1654(hd)S
1789(devices)S
2125(with)S
10 B
2338(sd[0)S
10 B-1
2517(-)S
10 B
2574(4])S
10 R
2692(referring)S
3080(to)S
3192(target)S
3456(0,)S
10 B
3565(sd[5)S
10 B-1
3744(-)S
10 B
3801(9])S
10 R
3919(to)S
4031(target)S
4295(1,)S
4404(etc.)S
4606(The)S
4797(logical)S
5105(unit)S
2016 V
1080(number)S
1412(is)S
1504(always)S
1809(0,)S
(because)319 1909 A
2253(devices)S
2580(with)S
2784(more)S
3016(than)S
3214(one)S
3384(logical)S
3683(unit)S
3864(are)S
4013(virtually)S
4379(extinct.)S
4728(The)S
4910(mapping)S
2136 V
1080(may)S
1278(be)S
1398(changed)S
1758(from)S
1979(the)S
(boot)178 2127 A
2330(environment)S
2863(however)S
3235(\(see)S
10 B
3423(boot)S
10 R
3613(\(8\)\).)S
2304 V
1080(Tapes)S
1355(start)S
1563(at)S
1670(minor)S
1944(device)S
2241(64,)S
2400(with)S
10 B
2613(nrst0)S
10 R
2872(at)S
2980(minor)S
3255(64,)S
10 B
3415(rst0)S
10 R
3618(at)S
3726(65,)S
10 B
3886(nrst1)S
10 R
4145(at)S
4253(66,)S
4413(etc.)S
4616(The)S
4808(mapping)S
5194(is)S
2424 V
1080(again)S
1332(static)S
1579(to)S
1691(target)S
1955(\(minor)S
10 R-1
2263(-)S
10 R
2354(64\))S
2522(/)S
2584(2.)S
2718(The)S
10 B
2909(rst)S
10 R
3060(devices)S
3395(rewind)S
3708(the)S
3864(tape)S
4065(on)S
4198(close,)S
4463(the)S
10 B
4619(nrst)S
10 R
4826(devices)S
5161(do)S
2544 V
1080(not.)S
1283(See)S
10 B
1454(mt)S
10 R
1572(\(1\),)S
1740(and)S
10 B
1910(mtio)S
10 R
2106(\(4\))S
2249(for)S
2392(a)S
2462(description)S
2934(of)S
3043(the)S
3191(commands)S
3652(that)S
3829(may)S
4028(be)S
4149(sent)S
4337(to)S
4441(the)S
4590(tape,)S
4809(either)S
5065(from)S
2664 V
1080(the)S
1228(command)S
1649(prompt)S
1964(or)S
2073(from)S
2294(a)S
2364(program.)S
2832 V
(Through)346 1080 A
1452(the)S
1601(eight)S
1828(raw)S
2006(generic)S
2329(devices)S
10 B
2657(rsg[0)S
10 B-1
2875(-)S
10 B
2932(7])S
10 R
3042(starting)S
3370(at)S
3469(minor)S
(120,)175 3735 A
3936(one)S
4107(can)S
4273(send)S
4483(SCSI)S
4722(commands)S
5183(to)S
2952 V
1080(any)S
1250(SCSI)S
1488(device)S
1776(from)S
1997(user)S
2190(mode.)S
2488(\(Minix-vmd)S
3004(only.\))S
3120 V
1080(The)S
1281(driver)S
1566(returns)S
1890(a)S
1979(drive)S
2230(geometry)S
2654(of)S
2782(64)S
2927(heads)S
3201(by)S
3346(32)S
3491(sectors)S
3816(per)S
3990(track)S
4237(for)S
4400(small)S
4663(disks)S
4914(with)S
5138(the)S
3240 V
1080(DIOCGETP)S
1617(ioctl.)S
1883(For)S
2060(large)S
2299(disks)S
(255x63)300 2542 A
2879(is)S
2983(returned.)S
3406(The)S
3600(size)S
3794(in)S
3909(sectors)S
4226(is)S
4330(usually)S
4657(larger)S
4929(than)S
5138(the)S
3360 V
1080(largest)S
1379(cylinder)S
1740(number)S
2078(indicates,)S
(because)319 2492 A
2842(the)S
2996(disk)S
3194(is)S
3292(not)S
3451(likely)S
3711(to)S
3820(exactly)S
4142(match)S
4419(that)S
4601(faked)S
4856(geometry.)S
3480 V
1080(Note)S
1301(that)S
1477(DOS)S
1704(may)S
1902(not)S
2055(be)S
2175(able)S
2368(to)S
(access)258 2471 A
2754(those)S
2991(last)S
3156(few)S
3333(sectors.)S
3648 V
870(D)S
872(Di)S
947(is)S
977(sk)S
1018(k)S
1111(l)S
1113(li)S
1143(ik)S
1173(ke)S
1225(e)S
1313(d)S
1315(de)S
1367(ev)S
1414(vi)S
1466(ic)S
1496(ce)S
1543(es)S
1590(s.)S
1631(.)S
3768 V
1080(Removable)S
1571(disks)S
(\(\257oppies\),)411 1810 A
2254(CD-ROM's)S
2763(and)S
2941(WORM)S
3298(disks)S
3537(may)S
3743(also)S
3938(be)S
(accessed)353 4066 A
(through)312 4452 A
4797(the)S
10 B
4953(sd)S
10 R
5082(dev-)S
3888 V
1080(ices.)S
1315(One)S
1511(is)S
1606(not)S
1762(allowed)S
2109(to)S
2215(write)S
2451(a)S
2524(WORM)S
2876(disk)S
3070(however,)S
(because)319 3469 A
3815(it)S
3898(is)S
3992(likely)S
4248(to)S
4353(be)S
4475(taken)S
4720(from)S
4943(an)S
5065(alien)S
4008 V
1080(operating)S
1486(system,)S
1816(so)S
1931(it)S
2013(seems)S
2285(safer)S
2508(to)S
2613(not)S
2768(allow)S
3019(Minix)S
3291(to)S
3396(stomp)S
3668(over)S
3874(it.)S
4007(One)S
4202(usually)S
4519(needs)S
4775(special)S
5082(O.S.)S
4128 V
(support)301 1080 A
1406(to)S
1509(keep)S
1724(one)S
1894(from)S
(writing)291 2115 A
2431(to)S
2534(the)S
2682(same)S
2914(block)S
3162(twice.)S
4296 V
1080(The)S
10 B
1268(DIOCEJECT)S
10 R
1886(ioctl)S
2096(ejects)S
2358(CD-ROMs,)S
(\257oppies,)343 2857 A
3232(etc.)S
3432(\(See)S
10 B
3644(eject)S
10 R
3847(\(1\).\))S
4081(A)S
4186(\256xed)S
4419(disk)S
4618(spins)S
4856(down)S
5111(if)S
5205(it)S
4416 V
(supports)340 1080 A
1445(the)S
1593(stop)S
1785(command.)S
4584 V
870(S)S
872(SC)S
930(CS)S
999(SI)S
1057(I)S
1134(T)S
1136(Ta)S