  XFree86 Video Timings HOWTO
  Eric S. Raymond <esr@thyrsus.com>
  Version 4.4, 13 Mar 2000
  The Linux JF Project <JF@linux.or.jp>

  XFree86 ɂāA茳̃J[h⃂j^̑gݍ킹ɍ킹ă[hs
  쐬@܂B݂ XFree86 ̔zźAقƂǂ̕W
  Iȑgݍ킹ɑΉĐݒłf炵@\Ă܂B
  āA͎̕ɁA[hs\ȃj^ƂĂςn[h
  EFAɃJX^}CYĒꍇɖ𗧂܂B
  Akvideogen gă[hsꍇAWIȃ[hs茳
  j^ɂ܂KĂȂ xvidtune gă[hsύXꍇ
  ɂ𗧂܂B
  ______________________________________________________________________

  ڎ

  1. Ɛӎ
  2. ͂߂
  3. vẐ߂̃c[
  4. rfIfBXvC̓쌴
  5. fBXvCƃA_v^ɂĂ̊bm
     5.1 j^̓g
     5.2 j^̃rfIMш敝:
     5.3 J[h̃hbgNbNl
     5.4 ͉̓𐧌䂷̂?

  6. {dl̓ǂݕ
     6.1 ш敝ɂ
     6.2 gƃtbV[g:

  7. VXe̐ݒɂg[hIt
  8. v郁
  9. t[TCY̌vZ
  10. pƓM
     10.1 :
     10.2 :

  11. Ŝ̂܂Ƃ
  12. j^̎dlOgp
  13. C^[X[hgp
  14. ^
  15. 摜\̖C
     15.1 摜EɂĂꍇ
     15.2 摜㉺ɂĂꍇ
     15.3 摜Ɛ̗ɖcłꍇ
     15.4 摜ɍL()ꍇ
     15.5 摜ɖcł(ׂȂĂ)ꍇ

  16. j^̓vbg
  17. ͎ҁA񋟎҂ɂ
     17.1 {ɂ

  ______________________________________________________________________

  1.  Ɛӎ

  ̏͂̕Ȃg̐ӔCɂĂ̂ݎgĂB[J[
  dlO̎gꍇɂ́Aj^ƂȂg̗ɏQ^
  \܂BڍׂȌxɂĂ ``j^̎dlOgp'' ǂł
  BdlO̎gꍇɓǎ҂̊F⃂j^󂯂Q́A
  Sēǎ҂̊F񎩐g̖łB

   HOWTO ̍ŐVł Linux Documentation Project
  <http://sunsite.unc.edu/LDP> ̃EFuy[Wɂ܂B

  ǂ̂߂̗Ȃ]Aᔻ₲Ă esr@snark.thyrsus.com ܂
  肢܂Bg̃j^̓ȖɂĖ@݂ȉ@
  ҂dq[͑tȂłBȂƂĂA̎Ԃ
  ʂɂȂ邵AȂ͂炢炷邾łB̒mĂ邱Ƃ͑S
  ̕ɏĂ܂B

  2.  ͂߂

  XFree86 T[ogpƁA[Ũ͎rfITuVXeݒ肵
  āÃn[hEFAőɗpł悤ɂȂ܂B̖̕
  ÍArfIJ[hƃj^œKɎgp邽߂̃^C~O߂̐l
  wԂ߂̂`邱ƂłB

  ̕ł́A܂ XFree86 T[oƂ߂̕@񎦂A
  bɎȂA̍D݂ɍ킹ĐݒœK@
  ܂B

  삷郂[hɂꍇ(ɁA\ߐݒ肳Ă VESA 
  [h肵Ă̂́AEɕЊAA傫
  )ɂ́Â܂ ``摜\̖C''̐߂܂ŐiłB̐
  ǂ߂΁A^C~Ol𒲐ėǂʂ𓾂@킩ł傤B

  X CXg[ɋNɉʂĂƂāAK
  [h̕KvƎv܂ȂłBo׎̃[hŝ
  Ƃǂ͐AȂftHglƂĎgl܂܃n[hEF
  AɍȂ܂BłAlOɁA
  pӂĂ郂[h CTRL-ALT-KP+ gđSďԂɎĂB
  ܂삵Ă悤Ɍ郂[h΁A640x480 ̃[h
  đSẴ[hRgAEgÃ[h삷邩ǂ
  mF܂Bꂪ삵瑼̃[h(Ⴆ΁A𑜓x 800x600 
  1024x768 ŁAȂ̃j^͂̎g[hȂ)L
  ɂ܂B

  ɂ֗ȕ@łĂ܂B[Xꂽ΂ XFree86 4.0
  ɓĂhCȏ DDC(VESA Display Data Channel @\)T|
  [gĂ܂BDDC LɂƁAj^͑ΉĂ郂[hs
   XFree86 ɋ܂BāAXFree86 4.0 ƍŋ߂̃j^ꏏ
  g΁AݒsKv͂ԂSȂł傤B

  3.  vẐ߂̃c[

  PnP dlɑΉĂrIVj^(1996 Nȍ~̐i)g
  ΁Aedid ǂݎvOgăj^Ɋ{l₢
  A[hsIɌvZł\܂Bڂ
  <http://altern.org/vii/programs/linux/read-edid/> B

  o[W 3.2 ȍ~ XFree86 ɂ́ArfĨ^C~Ol𒼐ڂ炸
  ɁA삷郂j^̃[hΘbIɊȒPɍ쐬ł XF86Setup(1) v
  OtĂ܂BĂقƂǂ̏ꍇAbƂȂ郂j^̃
  [hۂɌvZKv͂܂BcOȂ XF86Setup(1) 
  ͂̐܂BႦ΁A1280x1024 ܂ł̕WIȃrfĨ
  [hɂĂĂ܂B܂Aɍ\ 1600x1200
  ȏオg郂j^Ăꍇ͂܂AbƂȂ郂j^̃[h
  gŌvZȂ΂܂B

  KDE ɂ́Aj^ƃJ[h̊{l烂[hsvZ KVideoGen
  <http://without.netpedia.net/kvideogen/> Ƃc[܂BM
  ͂gă[hs쐬eXg͍s܂Ã[hs
  ۂɎƂ͂܂Bkvidegen ̐Ɛ́utbV[
  g(refresh rate)vp[^́Aq̓gł HSF  VSF
  ƓłBuM(horizontal sync pulse, HSP)v́AM
  }CNbPʂŕ\̂̂悤ł(̃c[ł́utg|[
  `(front porch)v HGT1 lƁuobN|[`(back porch)v HGT2 l͒萔
  ƂĂ܂)BuMv킩Ȃ΁AftHglg
  ̂Sł傤B

  ŋ߂ XFree86 ɂ xvidtune(1) Ƃc[tĂ܂B̓
  j^̃[hs̃eXg⒲ɖ𗧂Ƃ肢ł傤B
  ̃c[͊ԈႦĎǧʂɂċ낵ȌxoċN
  ܂B̕ɏĂ邱Ƃɂ悭ӂAxvidtune ̃EBhE
  \邽̐l̗ɂӖ킩悤ɂȂ΁AM
  ČI xvidtune g悤ɂȂ͂łB

  xvidtune(1) ĂꍇAX ̐ݒt@CύXɁA邢 X
  T[o̍ċNs킸ɁÂ܂܂̏ԂŐV[heXgł
  Bxvidtune ȂĂAXFree86 ł XF86Config t@Cɒ`
  镡̃[h̊ԂzbgL[gĈړł܂(ڂ
  XF86Config.man QƂĂ)B̋@\gĖʓ|܂
  ! V[heXgƂ́Ã[hɌŗL̃x^āA
  zbgL[Xg Ō ɒǉĂBV[hȂ
  Ƃ̕یƂāAɓĂ郂[h̓ftHgl̂܂܂ŎcĂ
  ܂傤B

  {̏I̕ `modeplot' p̃XNvgڂĂ܂B̃XN
  vggƁAp\ȃ[h̃AiOOt쐬ł܂B
  [hs̍쐬ɒږ𗧂킯ł͂܂񂪁A[hs`Ă
  el̊֌W𗝉ŖɗƎv܂B

  4.  rfIfBXvC̓쌴

  fBXvC̓쌴m邱Ƃ́AXconfig t@C̐FXȏꏊɂǂ
  Ȑ邩𗝉ŏdvłB̒ĺA XFree86 T[o
  fBXvCn[hEFAxŐ䂷̂Ɏgp܂B

  fBXvĆAX^hbg̏W܂ƍl̂gĉ摜\
  ܂B̃hbgEׂ֕Đ܂BāA̐ォ
  牺ׂ֕ĉ摜܂Bhbg̓fBXvCœdqr[𓖂
  ꂽƂ܂Bꂼ̃hbg͎̐FĂ܂Bꂼ
  ̃hbgɋψɓdqr[𓖂Ă邽߂ɁAdqr[̓X^ƌĂ΂
  ̃p^[ŃfBXvC𑖍܂B

  ŏɁuhbg̏W܂ƍĺvƏ̂́ÃX^
  hbg͎͕IȔ̂̃hbgƑΉĂȂłBIȔ
  ̂̃hbg̓X^̃hbgƏ̂ł\\X^̃hbg
  ̕Ȃ΂Ȃ܂BłȂ΁AfBXvCɂ̓
  AʂoĂЂǂƂɂȂĂ܂܂BX^hbg͎ۂɂ̓h
  Co痈AiOMTvÔłAꂪhbg̊i
  qƂĕ\̂́AM̎RƒJɋKIłA܂
  uĂ邩ɉ߂܂B

  ̃p^[̓XN[̍ォn܂A킸ȁuv(
  ͔Ɋɂ₩Őlɂ͂킩Ȃ炢ł)ȂE
  ܂ɃXN[؂܂Bēdqr[̓fBXvC̍[
  ɖ߂ĐVJn܂BV́Aŏ̐̎Ɠ悤ɃfB
  XvCE֑܂B̃p^[̓fBXvC̈ԉ̐
  𑖍܂ŌJԂ܂Bꂩdqr[(ʂ
  Ȃ)fBXvC̉E獶܂ňړAꂩŏS
  Ă̓JԂ܂B

  ɂ C^[XƌĂ΂ʎނ̕@܂BC^[X
  ́Aŏ̔t[ł͈̐Aڂ̔t[
  c̐𑖍Ƃ@łB

  fBXvC̍̓dqr[̊Jn_̓t[̎n܂ƌĂ΂܂B
  t[́Adqr[fBXvC̉E܂œ͂Ă獶ɍĂ
  ߂ĂƂɏI܂Bt[̓fBXvC̈ԏォԉ
  ł̑SĂ̓dqr[̐łłĂ܂B

  dqr[t[ړĂԂƁuIvAfBX
  vC̑SẴhbg͓_Ă܂AfBXvC̉ɂ͍͂
  Ȃł傤BăfBXvC̉ł́Adqr[̐䂪
  ŉ摜cł܂ł傤B̘c݂炷߁AfBXvC̉
  hbǵAdqr[͂Ă(uItvɂȂĂ邽)hbgP
  悤ɂȂĂ܂BfBXvC̎ۂɕ\̈悪Ȃ
  ̂́A킯Ȃ̂łB

  ׂ̏dvȂƂ́A\̈`悵ĂȂɓdq
  r[ǂȂĂ邩ƂƂłBfBXvC̗[`悷邽
  ߂Ɏg͂Ԃ́Adqr[E[獶[܂Ŗ߂߂Ɏg
  ܂BfBXvC̏[щ[`悷邽߂ɂ͂
  Ԃ́Adqr[fBXvC̉E獶܂ňړ邽߂
  g܂B

  A_v^J[h͐M𐶐AG`̂Ɏgꂼ̃hbg̈ʒu
  (\Fɏ])fBXvC̓dqe_܂B܂AA_
  v^J[h͐MƌĂ΂M𐶐Adqr[E[獶
  [ɖ߂^C~O𐧌䂵܂BḾASĂ̍s̍ŌłЂƂ
  ܂BɁAA_v^J[h͓dqr[fBXvC̍
  ړ邽߂̐M܂BM͑SẴt[
  ̏I߂ɐ܂B

  fBXvC͓dqr[̈ʒu肳邽߁AMƐ
  M̑OɒZԂKvƂ܂Bdqr[̈艻łȂƉ摜
  肵܂B

  ڂ TV and Monitor Deflection Systems
  <http://fribble.cie.rpi.edu/~repairfaq/REPAIR/F_deflfaq.html> ̃y[W
  B

  ̐߂ł́A`ƌAg悤ɂ邽߁AĂт̊{
  ɐG܂B

  5.  fBXvCƃA_v^ɂĂ̊bm

  Xconfig ̐ݒ荀ڂOɁÅbIȎmĂKv
  ܂:

  o  gpł郂j^̐MƐM̎g

  o  j^̎gѕ

  o  rfIA_v^̓NbNgAȂ킿uhbgNbNv

  5.1.  j^̓g

  j^̐gƂ́Ãj^ 1 bԂɕ`鐅̐
  ̂ƂŁA̓j^̍łdvȓłBǵÃj
  ^ 1 bԂɓdqr[cɍs񐔂̂ƂłB

  g͕ʁAj^̃}jA̎dl̃y[WɍڂĂ܂B
  g̐l͈ʓI Hz(b̉)ŁAg
  KHz(b̐)ŌvĂ܂Bʏ͈̔͂́A 50Hz 
   150Hz xA 31KHz  135KHz xłB

  }`VNj^̏ꍇA̎ĝ͕lƂĕ\Ă
  B[Gh̐iɑ̂łǍŒ肵gĂ郂
  j^܂B̂悤ȃj^ʂ̃j^Ɠlɐݒ͂ł܂
  Aj^̎ɌĂ܂ł傤Bł邾
  xŁAł邾Ɛg̑gݍ킹IĂ
  B܂AŒgj^ł͐݌vl荂g^ƃj^
  ߂邨ꂪ̂ŒӂĂB

  ̏̔̕łł́A}`VNj^̎dlOgpɂȂ薳ڒ
  Aǂ\𓾂邽߂ɐg̖ڏ̍ōl𒴂
  Ă܂B̌Ȁ󋵂ւ̌xłAɑ̎wE󂯂܂
  Bq ``j^̎dlOgp'' Ő܂B

  5.2.  j^̃rfIMш敝:

  j^̃rfIMш敝̓}jA̎dlɊւy[WɍڂĂ
  Bꂪꍇ́Aj^̍ł𑜓x̂ƂĂ
  B𑜓xш敝(܂gpłhbgNbN̑܂ȏl)
  肷邽߂̌oȉɎ܂:

               640x480                 25
               800x600                 36
               1024x768                65
               1024x768 C^[X   45
               1280x1024               110
               1600x1200               185

  ƂŁA̕\ɍڂĂ͓̂̐ł͂܂B̐
  ́A XFree86 W̃[hlf[^x[Xe𑜓x̍łႢhbgN
  bNlW߂̂̂ł(Ō̒l͕ʂłB͊O}ċ
  ߂܂)Bj^̑ш敝́Aԏ̉𑜓xŕKvȍŒ̑ш敝
  ۂɂ͍ł傤Aꂸɐ MHz ߂̃hbgNbN
  Ă݂ĂB

  ܂A65MHz ȉ̃hbgNbNł͑ш敝͂قƂǖɂȂ
  ƂɒӂĂBSVGA قƂǂ̍𑜓x̃j^ł́A
  ̓j^̃rfIMш敝̌E͂邩ɒႢgłB
  ɗ܂:

               uh                      rfIMш敝
               ----------                      ---------------
               NEC 4D                          75MHz
               Nano 907a                       50MHz
               Nano 9080i                      60MHz
               Mitsubishi HL6615               110MHz
               Mitsubishi Diamond Scan         100MHz
               IDEK MF-5117                    65MHz
               IOCOMM Thinksync-17 CM-7126     136MHz
               HP D1188A                       100MHz
               Philips SC-17AS                 110MHz
               Swan SW617                      85MHz
               Viewsonic 21PS                  185MHz
               PanaSync/Pro P21                220MHz

  ԉ̃NX̃j^łA𑜓xɊւărfIMш敝猵
  󂯂邱Ƃ͂܂BNEC Multisync II ǂłB̃fBX
  vC͎dlɂ 800x600 ͕\łA800x560 \ł܂
  B̂悤Ȓ𑜓x̏ꍇ́AhbgNbN傫ȃrfIM
  敝͕Kv܂B 32MHz  36MHz ŏ\ŁA̎gƂ
  j^̌̂̃rfIMш敝ł30MHz 炻قǗꂽlł͂
  B

   2 ̓gł́AfBXvCĂ͂̐\
  ʂƉfȂ܂񂪁AłȂ̕iƌ
  Ăł傤BANEC Multisync II ƍAႦ
  36MHz ̃rfIMш敝ĂɉzƂ͂܂BA
  傫摜cޒgĂȂ΁A͂ҏW铙̈
  IȍƂɂ͖͂܂B(摜̘c݂܂ɂ傫ꍇ
  ́AڂŌĂ킩ł傤)B

  5.3.  J[h̃hbgNbNl

  rfIA_v^̎dlɂ͕ʁAJ[h̍őhbgNbNl
  ܂(hbgNbNƂ͉ʂ 1 bԂɕ\ł_̑ł)B

  hbgNbN̏^Ȃꍇ́AX T[o͂ł擾
  ܂Bŋ߂̑SĂ X T[o ́AX ̎ۂ̋NrfI[h̕ύXs
  킸ɃhbgNbN̏̏o͂s  --probeonly IvVT
  |[gĂ܂B

  -probeonly IvVĂCɂȂłBX j^ł
  点ĂANbNl₻̑̏ɊւsWG[o͂ɏo
  ܂Bt@CɃ_CNg΁AƂR\[ɖ߂邽
  ɍċNKvȏꍇłAL^cƂł܂B

  ǒʂNbZ[ẂAȉ̗̂悤ɂȂ܂:

  XFree86 ̏ꍇ:

  Xconfig: /usr/X11R6/lib/X11/Xconfig
  (**) stands for supplied, (--) stands for probed/default values
  (**) Mouse: type: MouseMan, device: /dev/ttyS1, baudrate: 9600
  Warning: The directory "/usr/andrew/X11fonts" does not exist.
           Entry deleted from font path.
  (**) FontPath set to "/usr/lib/X11/fonts/misc/,/usr/lib/X11/fonts/75dpi/"
  (--) S3: card type: 386/486 localbus
  (--) S3: chipset:   924
                      ---
      `bvZbg -- ͐mȃ`bv̎ނłB86C911 ̑Ô̂łB

  (--) S3: chipset driver: s3_generic
  (--) S3: videoram:  1024k
                      -----
           {[hɍڂĂt[obt@ RAM ̑傫

  (**) S3: clocks:  25.00  28.00  40.00   3.00  50.00  77.00  36.00  45.00
  (**) S3: clocks:   0.00   0.00  79.00  31.00  94.00  65.00  75.00  71.00
                    ------------------------------------------------------
                                p\ȋ쓮g(Pʂ MHz)

  (--) S3: Maximum allowed dot-clock: 110MHz
                                      ------
                                      ш敝
  (**) S3: Mode "1024x768": mode clock =  79.000, clock used =  79.000
  (--) S3: Virtual resolution set to 1024x768
  (--) S3: Using a banksize of 64k, line width of 1024
  (--) S3: Pixmap cache:
  (--) S3: Using 2 128-pixel 4 64-pixel and 8 32-pixel slots
  (--) S3: Using 8 pages of 768x255 for font caching

  SGCS  X/Inside  X ̏ꍇ:

  WGA: 86C911 (mem: 1024k clocks: 25 28 40 3 50 77 36 45 0 0 79 31 94 65 75 71)
  ---  ------       -----         --------------------------------------------
   |     |            |                 p\ȋ쓮g(MHz P)
   |     |            +-- {[hɍڂĂt[obt@ RAM ̑傫
   |     +-- `bv̎
   +-- T[o̎

  : Ȃׂ̍Ƃ̓}Vׂ̕ႢɍsȂĂBX ̓A
  vP[VłAfBXN̓ƎԒ߂̃[vՓ˂ƁA
  L͕̐smɂȂ܂B񂩌JԂsA傫ϓ
  ȂƂm߂ĂBϓ傫ꍇɂ́A肷܂Ńv
  ZXEĂ݂ĂB}EXf[̃vZXgł
  ΁Ǎ͍ɂȂ܂(Linux ł gpm, SVr4 ł mousemgr Y
  ܂)B

  ̂悤ȕsm邽߁AꂽNbN̐̂܂
  Clocks vpeB̒lƂ Xconfig Ɏ荞łB͎Ԓ
  ߂̃[v}~AX NbNl̐mȈꗗ^邽߂łB
  L̗̃f[^gƁÂ悤ɂȂ܂:

  wga
          Clocks  25 28 40 3 50 77 36 45 0 0 79 31 94 65 75 71

  ϓ镉ׂVXeł́A̕@g X ̋N̕s
  Ȏs鏕ɂȂł傤BX NɃVXeׂ̕
  ŊԈl𓾂Ă܂Aconfig f[^x[X炿傤ǂ悢hb
  gNbNl邱ƂłȂAԈlĂ܂
  Ƃ蓾̂łB

  5.4.  ͉̓𐧌䂷̂?

  j^̓Mш敝́ArfIA_v^̃hbgNbNƋɁA\
  ō̉𑜓x肵܂Bn[hEFA̐\ô̓h
  CołBǂȂɗDꂽrfIA_v^⃂j^łAǂfoCXh
  CoȂΕ̎ɂȂĂ܂܂BAL\ȃfoCXh
  Co΋@\̒Ⴂn[hł\ɗ܂Bꂪ XFree86 ̐
  vNwłB

  gphbgNbN̓j^̃rfIш敝ɍ킹ׂłB
  A͂Ȃ_镔ł\\j^ɂĂ͖ڏ̑ш敝
   30% œ삵܂BɔXŃAj^ɋLڂĂ鐂
  g𒴂邱ƂɊ֌W܂BɂĂ͈ȍ~ŏڂ
  ܂B

  ш敝mĂƁA\Ȑݒ̒A茫Ił悤ɂ
  ܂B́AȂ̃fBXvC̕\i(ɍׂ̂߂̃V
  [v)ɉe邩܂B

  6.  {dl̓ǂݕ

  ̐߂ł͏L̎dl̈ӖƁȂɒmȂ΂ȂȂƂ
  ܂B܂ŏɂ`܂Bꂼׂ̗ɂ́AvZ鎞
  gϐʓɎ܂B

     g(horizontal sync frequency, HSF)
        b̐ (LQ)B

     g(vertical sync frequency, VSF)
        b̐(LQ)BɃtbV[g̏Ƃďd
        vB

     hbgNbNl(dot clock, DCF)
        萳ɂ́u쓮NbNgvAKɁuш敝vƌĂԂ
        ƂBA_v^̔Uq܂ VCO ̎g --- b`\hbg
        ̍őlB

     rfIMш敝(video bandwidth, VB)
        j^̃rfI͂ɑ荞ŁAʂł̂邱Ƃ
        ҂łő̎gBA_v^I/It؂ւ̃p^[
        ꍇAŒ̎g DCF ̔ɂȂ܂Bė
        _Iɂ͑ш敝Ӗn߂̂ DCF  1/2 łB
        Aڍו䖝łxɂƕ\ɂ́A DCF 
        ōl肸ƒႢƂ悭Ȃł傤BłȂ獂߂ɂĂ
        ܂傤B

     t[(HFL, VFL)
        t[(HFL)̓j^̓dqe 1 ̎gĂȂE
        E܂ސ𑖍̂ɕKvȃhbgNbN̐Bt
        [ (VFL)͎gĂȂƉ̋E܂ފSȉʂ̑
        ̐łB

     tbV[g(screen refresh rate, RR)
        b̉ʍĕ`(ut[[gvƂĂ΂܂)B
        ǂlŁAȂȂ܂B60Hz ͗ǂlłA
        VESA W 72Hz Ȃ΂Ȃǂł傤Bȉ̌vZŋ߂܂:

                  RR = DCF / (HFL * VFL)

     ɂς̓j^ɕ\𑜓xł͂ȂA肢炩
     ƂɒӂĂBɂĂ͈ȍ~ŏڂ܂B

     C^[X[h̎g͕ʁAۂɂ͔̃t[̎g
     (87Hz interlaced ̂悤)w肵܂: ʂ̃fBXvCł͉ʑS
     ̂ło悤ȎgłASĂ̒P̐̎
     ĕ`悳܂B

     vẐ߁ASt[̍ĕ`摬x(tbV[g)܂ 43.5Hz
     ł̃C^[X\l܂BC^[X[h̕\íA
     St[[g̔C^[X[h̕\iǍDłB
     At[[gɑΉC^[X[h̕\iƔ
     ׂƖ炩ɗ܂B

  6.1.  ш敝ɂ

  j^̃[J[͑ш敝̍悭`ɂ܂BƂ̂Aш
  ̋ƐFω̃V[vɐ^邩łBш敝傫
  قǁAׂ摜\邱Ƃł܂B

  j^͓dCMpĉ摜\܂BM͈xfW^Ai
  OւƕϊƁAɃAiOMƂĎ舵܂BAiOM
  ͌Œg̒PȔg`gݍ킹̂ƍlA
   MHz ͈̔͂̎gAႦ 20MHzA40MHzA 70MHz
  肵܂Bj^̃rfIMш敝́Ac݂ȂɈł
  g̈̃AiOMłB

  B̖ړÎ߂ɂ́ArfIMш敝͎Ɏgp\ȃhbgNbN
  悻̏ƂďdvłB

  6.2.  gƃtbV[g:

  ʏ̐̓t[̒Ŏۂɕ\镔łB
  ̏uԂɎۂɋPĂ_͂łAtbV[
  g\΁Aڂɂ͐₦ԂȂSẲ摜uvƂ킯
  B

  ł̐}ŉ܂:

       _______________________
      |                       |     ǵA
      |->->->->->->->->->->-> |     j^̓dqr[
      |                      )|     ̂悤ȃp^[
      |<-----<-----<-----<--- |     A1 b
      |                       |     񐔂łB
      |                       |
      |                       |
      |                       |
      |_______________________|
       _______________________
      |        ^              |     ǵA
      |       ^ |             |     j^̓dqr[
      |       | v             |     ̂悤ȃp^[
      |       ^ |             |     A1 b
      |       | |             |     񐔂łB
      |       ^ |             |
      |       | v             |
      |       ^ |             |
      |_______|_v_____________|

  ۂ̃X^͂ƂĂׂWOUO^̃p^[ĂāAEɓd
  qr[ēɏ㉺ɂĂ܂B

  ŁAhbgNbNƃt[̑傫ǂ̂悤ɃtbV[g
  Ɋ֌WĂ邩܂B`ɂƁA 1 wc(Hz) 1 b 1
  łBāAt[ HFL Ƃt[ VFL 
  ꍇɑSẲʂ𕢂ɂ (HFL * VFL) hbgNbNKv
  B`ɂƃJ[h͖b DCF ̐MoĂ̂ŁAj^
  dqeEE߂EցE߂Ƃ𖈕b DCF / (HFL *
  VFL) ŝ͖炩łBꂪtbV[głBȂȂA
  ͖b艽ʂXVł邩 (烊tbV)Ă
  邩łB

  𑜓xƂ̊֌Wg[hIt̊֌Wɂ̂ŁA̗vɉ
  ĐݒsȂ߂ɂ̊TO𗝉Kv܂B

  eLXg͎oɑîŎɊ֌W}`܂:

          RR                                      VB
           |   min HSF                     max HSF |
           |    |             R1        R2  |      |
  max VSF -+----|------------/----------/---|------+----- max VSF
           |    |:::::::::::/::::::::::/:::::\     |
           |    \::::::::::/::::::::::/:::::::\    |
           |     |::::::::/::::::::::/:::::::::|   |
           |     |:::::::/::::::::::/::::::::::\   |
           |     \::::::/::::::::::/::::::::::::\  |
           |      \::::/::::::::::/::::::::::::::| |
           |       |::/::::::::::/:::::::::::::::| |
           |        \/::::::::::/:::::::::::::::::\|
           |        /\:::::::::/:::::::::::::::::::|
           |       /  \:::::::/::::::::::::::::::::|\
           |      /    |:::::/:::::::::::::::::::::| |
           |     /     \::::/::::::::::::::::::::::| \
  min VSF -+----/-------\--/-----------------------|--\--- min VSF
           |   /         \/                        |   \
           +--/----------/\------------------------+----\- DCF
             R1        R2  \                       |     \
                            min HSF                |    max HSF
                                                   VB

  ͈ʓIȃj^̃[h_CAOłB_CAO x ̓N
  bNg(DCF)Ay ̓tbV[g(RR)ӖĂ܂B_C
  AOœhׂĂ̈̓j^̕\\ȗ̈łB̗̈̂
  ̓_ƂĂ\\łB

  `R1'  `R2' ̃x(640x480 ̂悤)Œ𑜓x\
  ܂B܂ÄقȂhbgNbNƃtbV[g̑gݍ
  킹ň̉𑜓xǂ̂悤Ɏł邩}Ă܂B R2 ̐
   R1 ̉𑜓x荂Ƃ\Ă܂B

  Ă̈̏Ɖ̋ÉAǧEl\PȂ
  łBrfIMш敝̓NbNg̏lŁAĕ\
  \ȗ̈̉E̋Eɂ鐂Ȑŕ\܂B

  ``j^\vbg''ɂ́AX̃j^ɑ΂Ă̂悤ȃ_CA
  O(X graphics ł͂Ɩɗł傤)vbĝ
  vO܂B̐߂ɂ͋[c_܂BȂ
  Ag̏̋El̓ołB

  7.  VXe̐ݒɂg[hIt

  OɎ́Â悤ɕό`ł܂:

               DCF = RR * HFL * VFL

  ܂hbgNbN͌ŒłB̈b̃hbǵAtb
  V[gA𑜓x܂͐𑜓xɐU蕪܂B̐
  ̂ǂꂩ𑝂₷ƁAʂ̐炳Ȃ΂Ȃ܂B

  AtbV[g̓j^̍ő吂g𒴂Ȃ
  ŒӂĂBāA郂j^́AhbgNbNł́A
  t[̐ςɍŏlA菬邱Ƃ͂ł܂B

  ̐ݒIԎɂ͊oĂĂBtbV[gႷ
  Ɖʂ̂ɋ͂߂ɂȂ܂BtbV[g
  60Hz ȏɂ܂傤BVESA ̐lԍHwIȕWl 72Hz łBu
  _ł̃[g 120Hz łBɕqȕ́AtbV[g
  ̒l荂܂傤B

  lԂ̖ڂɂ͊ꂪ܂AlԂ̖ڂ̂ɑ΂ϐɂ͌l
  ܂A͑ϖڂɐĥłBʂ 90% px
  Ńj^ɌAÂwiƗǂRgXg̐FOiFɎgĂ
  āAPxႩ璆ɒĂȂ΁AԂ 45Hz ʂɏ
  Kł傤B

  ȃeXĝ͎̒ʂł: xterm -bg white -fg black Ő^
  ȔwiFɍ̑OiF xterm JāA\\ȗ̈SĂB炢
  ̑傫ɂĂBăj^̖邳ő̐ݒl 3/4 ɐ
  肵āAj^ނāAj^ڂŔ`Ă݂Ă(
  ́AqȎӕ̍זE𓭂邽߂ł)BS
  ȂꍇA͂͈͂Ȃ΁AȂɂƂẴt
  bV[g͂傤ǗǂlłBłȂAtbV
  [gƍݒ肵ĂBȂȂAꌩvȂ悤Ɍ
  A炩ɂ͕Ȃ悤ȂɂĖڂƂĂJēɂ
  NłB

  C^[X[hł́A̗ʂ݂͌̉z𑜓xƎۂ̉ʂ̒
  gɈˑ܂BĎKvɂȂ܂Bt[̎g
  85Hz ႭȂق悢ł傤B
  ȏ̂悤ɂāA肬苖eł郊tbV[gIԂƂł
  ܂BHFL  VFL ̑IɂẮA̍𗧂Ă]n
  傤B

  8.  v郁

  J[fBXvCO[XP[fBXvCŎł𑜓x͎gp
  \ȃt[obt@̗ʂɐ܂B̐́A2 F (
  )ŃO[XP[łȂfBXvC̏ꍇ͑֌W܂B

  256 F̃fBXvC̏ꍇ́ArfĨoCg͕\hbg
  ̐KvłB̃oCg͐ԗΐ琬W̓_ 1 _Ƃ
  łBKvȃʂ𓾂ɂ́A 1 {ɕ\_̐ɕ\
  ̐|ĂB1024x768 ̉𑜓xfBXvC̏
  ́AfBXvCɕ\_̐ 1024 x 768 = 786,432 ɂȂ܂B
  ܂A 1 hbg 1 oCgɂȂ̂ŁAA_v^J[hɓoCg̃r
  fIKvłB

  āAʂ́Aʂ (HR * VR)/1024 LoCgPʂɐ؂
  ʂKvł(̗ł͂傤 768K ɂȂł傤)B
  ΁A (936 * 702)/1024 = 642K oCgƂȂ܂BāA1M oCg
  ΁A]zXN[̃XN[Ɋ蓖Ă
  B

  Ƃ낪ArfIJ[h 512K Ȃ΂̉𑜓x͎g܂
  Bǂj^ĂƂĂA\ȃrfIȂ΃j^
  ̐\Ƃ͂ł܂B̋tɁASVGA J[h 1M oCg̃
  ĂƂĂAj^ō 800x600 \łȂȂ
  ΁Aȏ̍𑜓x͂ǂĂƂ̂ł(\ȑ΍ɂ
  Ă ``C^[X[hgp''Ă)B

  Kvʂ񂠂ĂSz܂BXFree86 ͗]
  𗘗pĕ\̈XN[ł悤ɂ܂ (zXN[
  傫̃p[^Ɋւ Xconfig t@C̕QƂĂ)B
  ܂A512K oCg̃𓋍ڂJ[hɂ 512,000 oCgł͂ȂA
   512 x 1024 =524,288 oCg̃ڂĂ邱ƂoĂ
  ĂB

  S3 J[h X/Inside 삵ĂāA 16 F(1 sNZ 4
  rbg) ̏ꍇAXconfig t@C [x 4 Ɛݒ肷΁AJ[h
  𑜓x{ɂł܂BႦ΁AS3 J[h͒ʏ 1024x768x256(1024x768 
  𑜓x 256 F)łA[x 4 ɂ 1280x1024x16(1280x1024 ̉
  x 16 F) g悤ɂȂ܂B [: [x(depth)Ƃ͐FO
  [XP[\rbgłB]

  9.  t[TCY̌vZ

  x: ̕@̓}`VNj^̂߂ɊJ܂BŒg̃
  j^ł̕@͂܂gƎv܂ۏ؂͂ł܂B

  ŏɍő̎gp\ HSF  DCF āA\񐔂vZ
  B

  Ⴆ΁A65MHz ̃hbgNbN Sigma Legend SVGA J[hƁA55KHz 
  g̃j^gĂƉ肵܂BDCF / HSF vZ
  1181 Ƃʂ܂B

  āAłɍpoĂ܂B̎̓Ƃ߂ 8 
  {Ɋۂ߂ĂB 8 rbgWX^A 3 rbg
   11 rbg̒l𓾂悤 SVGA  S3  VGA 䑕uɂėL
  łB ATI 8514/A ̂悤ȑ̃J[hł͂̂悤ȗv͂Ȃ
  񂪁AX͐mȒm킹Ă͂܂񂵁Aۂ߂ɂĕss
  ȂƂ邱Ƃ܂B]Đ\񐔂 1176 Ɋۂ߂
  B
  ̐(DCF / HSF  8 ̔{Ɋۂ߂)͍ŏ HFL ƂĎg
  B HSF ƒႭȂ悤ɓMݒ肷΁AHFL ƒ
  ł܂ (āAʂ̐̃hbg𑝂₹܂)B
  Ȃɑx͒xȂAڂɕtł傤B

  oIȖ@ł́At[ 80% 𑜓xƂĎgp\ŁA
  ̕\镔(͑́AEƓdqr[ʂ̉E[
  玟̑̍[֖߂Ă鎞Ԃ)łB̗
  ́A944 ɂȂ܂B

  āAʏ̉ʂ̃AXyNg(c)4:3 𓾂邽߁AvZ
  x 3/4 ɂȂ悤ɐ𑜓xݒ肵܂傤B̗ł́A708 
  Ȃ܂Bۂ VFL 𓾂ɂ́A1.05 | 743 ɂȂ܂B

  4:3 Ƃ䗦͋ZpIȖ@ł͂܂Bʂ̔䗦gʂ̕\
  ܂ĝł΁A̒lɂ闝R͂܂B
  gƃt[̍ƃt[̕Ίp̒狁߂̂ȒP
  Ȃ܂B܂Ίp̒ 0.8 |lłA0.6 |
  lłB

  ǁAHFL=1176  VFL=743 Ƃ܂B65MHz  2 ̐̐ςŊ
  ƁA\ɍČNɗǂ 74.4Hz ̃tbV[g܂B
  f炵!  VESA W藧hł傤! ܂ɁA炭\zĂ
  800x600  944x708 Ƃ𑜓xꂽ̂łB{ɑf
  !

  ( 76 Hz ܂)tbV[gǂ邱Ƃ\łB
  ɂ́Ai 2 KHz 炢głj^
  ƂƁAVFL 炩(܂A̗Ō 944  75% 
  )Ƃ𗘗p܂B́uI[o[hCuv
  Ă݂OɁAȂ̃j^̓dqe 76 Hz ȏɂł
  ƂmFĂB(Ⴆ΁AlĈ NEC 4D ł͂͂ł܂
  B 75 Hz ܂ł VSF g܂B)

  ȏオAX^\ɂĂ̒PȌvZƊ{ÎقƂǑSĂłB
  pƂقǂ̂̂łȂł!

  10.  pƓM

  AőI񂾃hbgNbNΉɌvZ HFL/VFL ̐A
  ȃtbV[gA\ VRAM(rfI)邱
  ƂmF܂Bꂩ炪{̍pł \\ ǂœM
  omKv܂B

  MۂɃj^̐yѐ̑g𐧌䂵Ă܂Bdl
  \ςoĂ HSF  VSF ͒i̍ő哯g̐l
  BA_v^J[h̐M̒̓M̓j^ɂǂꂭ炢
  ɓ삷邩`܂B

  L 2 ̊GvoĂBڂɌ摜(Ȃ̑I񂾉
  x) \邽߂Ɏĝ́At[X^邽߂ɕKv
  Ԃ̈ꕔłB

  10.1.  :

  O̒`ɂ΁A 1 {̐ǂ̂ɂ HFL ̎Ԋ|
  B\镔̃NbN(XN[𑜓x) HR ƌĂт
  傤B͖̎炩ɁA` HR < HFL ƂȂ܂B̓Iɗ
  ɊJnƉ肵ĎɎ܂:

    |___ __ __ __ __ __ __ __ __ __ __ __ __
    |_ _ _ _ _ _ _ _ _ _ _ _                |
    |_______________________|_______________|_____
    0                       ^               ^     P: NbN
                            |   ^       ^   |
                            HR  |       |  HFL
                            |   |<----->|   |
                            |<->|  HSP  |<->|
                            HGT1         HGT2

  ŁAɂ悤ɕ\f[^̃NbNIƃt[Ŝ̃NbN
  I̊Ԃ HSP ̓Mzu܂B̂̂H ͂
  ƁAʕ\EɈړȂȂ邩łB\XN[ŕ\
  ׂꏊA܂胂j^̕\\̈ɂƎ߂邽߂
  B

  ̏AM̗ "ی쎞" ƂĖ 30 NbNKvłBHGT1
   HGT2 ŕ\킵Ă܂BʓIɂ HGT1  HGT2 Ɠ܂
  A^̏ԂݒsȂ΁A2 𓙂Ďn
  ߂ǂł傤(͓M𒆉ɒuƂɂȂ܂)B

  M̒uႦ̏Ǐ́A1 ̋Eɒ[ɍLȂĉ摜̑̑
  ʂ̒[荞񂾂A[̐"摜"̑тɂȂA
  ̉摜\̂ƂČ܂BM͐ێߕs
  ɂȂĂ TV ̂悤ɎۂɏcXN[܂(AۂN
  ܂)B

  K^Ȃ΁Aj^̓M̎̕dlɋLڂĂł傤B
  LڂȂ΁A{̍pn߂邱ƂɂȂ܂cB

  ł͏ssKvł傤BقƂǂ̏ꍇ
  ́AM 3.5  4.0 }CNbƉ肷ΈSłB

  ̓Iɂ́AHSP  3.8 }CNbɂ܂傤(̒l͎n߂ɓ
  Ă͈lł͂܂)B

  āAق 65MHz NbNɎg܂AHSP  247 NbN
  ΂悢Ƃ킩܂B( 247 = 65x10**6 * 3.8 *10**(-6))
  [K=10**6, }CN=10**(-6) ł鎖voĂ]

  [J[ɂẮAhbgł͂Ȃ̃t[p[^D
  Ŏg܂B̗p:

     ғ(active time, HAT)
        ~bɊZ HR ɑBHAT * DCF = HR

     󔒎(blanking time, HBT)
        ~bɊZ (HFL - HR) ɑBHBT * DCF = (HFL - HR)

     tg|[`(front porch, HFP)
        ܂ HGT1 ł.

     (sync time)
        ܂ HSP łB

     obN|[`(back porch, HBP)
        ܂ HGT2 ł.

  10.2.  :

  O̊Gɖ߂āA247 NbNG̒łǂ̂悤ɒu炢ł
  ?

  ̗ł́AHR  944  HFL  1176 łB 2 ̗̍
  1176-944=232 < 247ł! 炩ɂ̈Ⴂ𒲐Ȃ΂܂B
  łł傤?

  ŏ 1176  1184 ֏グāA 944  936 ։ĂBňႢ
   1184-936= 248 ɂȂ܂BA߂ÂĂ܂ˁB

   HSP vẐ 3.8 ̑ɁA3.5 g悤ɂƁA
  65*3.5=227 ƂȂ܂BȂǂȂ܂B 248  227 肻
  قǑ傫܂BHR  SP ̊Jn_̊Ԃ SP ̏I_ HFL ̊
   30 ꂮ炢Kv܂BāA 8 ̔{ɂ
  Ȃ΂Ȃ܂! X͂ōsl܂Ă܂̂ł傤?

  AĂ݂܂傤B936 % 8 = 0 łA (936 + 32) % 8 = 0 
  BA936 + 32 = 968, 968 + 227 = 1195, 1195 + 32 = 1227 ƂȂ
  ܂BӂނӂށAȂɈ͂܂BA8 ̔{ɂ͂ȂĂ
  Ȃ̂ŁA1232 Ɋۂ߂ĂB

  AM HR  HFL ̂傤ǐ^񒆂ɒuȂ肪N
  \܂BKɂA1232 - 32 = 1200  8 ̔{ł邱ƂƁA
  (1232 - 32) - 968 = 232  3.57 }CNbƂÓȒ̓M
  Ή邱ƂvZł킩܂B

  ɁA 936/1232 ͑ 0.76 ܂ 76%łA80% 炻Ȃ
  ł܂vł傤B

  ̏A݂̐t[gȂA{Iɂ̓j^̔\͓
  52.7KHz(=65MHz/1232)ɂē邩ǂׂ܂傤B͖
  ł傤B

  oAL 936*75%=702 V𑜓xɂ܂傤B
  702*1.05=737 Vt[ɂȂ܂B

  ʂ̃tbV[g 65MHz/(737*1232)=71.6 Hz ɂȂ܂B
  \f炵lłˁB

  lɐM̔zu}܂:

     |___ __ __ __ __ __ __ __ __ __ __ __ __
     |_ _ _ _ _ _ _ _ _ _ _ _                |
     |_______________________|_______________|_____
     0                      VR              VFL     P: NbN
                             ^   ^       ^
                             |   |       |
                             |<->|<----->|
                              VGT    VSP

  \f[^̏IɓM𔭐M܂BVGT ͓M
  ی쎞ԂłBقƂǂ̃j^ VGT Ȃ(ی쎞ԂȂ)ŉKɓ
  삵Ałی쎞ԂȂłB2,3 NbN̕ی쎞ԂKvȂ̂
  ܂Aی쎞Ԃĕss邱Ƃ͕ʂ܂B

  ɖ߂܂傤: t[̒`ANbN͑St[
  H鎞Ԃł̂ŁAł 1232/65MHz=18.95 }CNbɂȂ܂B

  ɂΐ̃pX 50 }CNb 300 }CNb̔
  ͂ɐݒ肷ׂłBł 8 NbNA150 }CNbgp
  ܂ (150 }CNb / 18.95 }CNb   8)B

  [J[ɂẮAhbgł͂Ȃ̃t[p[^D
  Ŏg܂B̗p:

     ғ(active time, VAT)
        ~bɊZ VR ɑBVAT * VSF = VR

     󔒎(blanking time, VBT)
        ~bɊZ (VFL - VR) ɑBVBT * VSF = (VFL - VR)

     tg|[`(front porch, VFP)
        ܂ VGT łB

     (sync time)
        ܂ VSP łB

     obN|[`(back porch, VBP)
        M̌̑ 2 ی쎞ԂɎĂ܂B΂΃[łB

  11.  Ŝ̂܂Ƃ

  Xconfig t@C̃rfI[h(Video Modes)\͐s̐łłĂ
  āAꂼ̍s X T[ogp 1 ̃[h̊SȎdl\킵
  Ă܂B̍ڂ͖̃ZNVAhbgNbNZNVAZN
  VAZNV 4 ̃ZNVɕ܂B

  ̃ZNV 1 ڂȂA̍s̎cŃrfI[ĥ̖w
  肵܂B̖̂́AXconfig t@C̃OtBbNXhCoݒZN
  V "Modes" sQƂ܂B݂̍sO̍sƓ̂Ȃ
  ̂͏ȗł܂B

  hbgNbNZNVɂ́ArfI[hs̍ڂ DCF ƌĂł
  hbgNbN݂̂܂B̃ZNVō쐬鐔hbgN
  bNƂĂ̍ڂɏ܂B

  ZNV 4 ̍ڂ܂݁Aꂼ̐ʂ̏łǂ̂
  ɍ쐬邩Lq܂Bŏ̍ڂ́A𔭂ĉf\
  āAƂ̃hbg܂(܂ HR ƌĂł̂ł)B 2
  Ԗڂ̍(SH1)͂ǂ̃hbg琅Mn܂邩܂B 3 
  ڂ̍(SH2)͂ǂ̃hbgŐMI邩܂B 4 Ԗڂ
  ڂ͑St[(HFL)w肵܂B

  ZNV 4 ڂȂ܂Bŏ̍ڂɂ͉ʏɕ\
  ̐܂ (VR)B 2 Ԗڂ̍(SV1)ɂ͐MԖ
  ̐n܂邩܂B3 Ԗڂ̍(SV2)ɂ͐MԖ
  ̐ŏI邩܂B 4 Ԗڂ̍ڂɂ͑St[
  (VFL)B

  w:

            #Modename    clock  horizontal timing  vertical timing

            "752x564"     40    752 784  944 1088  564 567 569 611
                          44.5  752 792  976 1240  564 567 570 600

  (: WI X11R5 ̂܂܂ł ̃hbgNbN͎g܂B)

  Xconfig ł́AŋPĂhbg̐APĂhbg瓯M
  ̊Jn_܂ł̃hbgAM̎ԕ̃hbgƓM̏I
  _̃hbgA𑫂킹 1 {̃hbgvZ
  ł܂B̃hbg͈ꗥ 8 Ŋ؂鐔lłȂ΂
  ܂B

  ̐l̗: 800 864 1024 1088

  ̗̐͏ɁAPĂhbg(800)AJn_̃hbg(864)A
  I_̃hbg(1024)A̍Ō̃hbg(1088)ƂȂ܂B

  SĂ̐̐(800, 864, 1024, 1088) 8 Ŋ؂鎖ɂ
  xӂĂB͐̐ɂ͓Ă͂܂܂B

  ʂ̏ォ牺܂ł̐̐t[\܂Bt[̊{IȎ
  Ԓ͐ōsȂ܂B͉̑摜\邽߂Ɏg܂BŌ
  ̔\ŁA{x}Ǎ㐂M
  ܂BēM͐{At[̍ŌɓM
  ̌ŕKvȒx܂B̓샂[hK肷鐔ĺA
  ̂悤ɓ͂܂B

  ̐l̗: 600 603 609 630

  ̗̓fBXvC 600 {̐\A603 Ԗڂ̐琂
  n܂ 609 ԖڂŏI鎖AđS 630 {̐gp邱Ƃ\
  킵Ă܂B

  ̐l 8 Ŋ؂lłȂĂ\܂B

  ɖ߂܂傤BLɂāAXconfig ֏ޕKvȑSĂ̒l͈
  ̂悤ɂȂ܂:

       <name>   DCF     HR  SH1 SH2   HFL   VR  SV1 SV2 VFL

   SH1 ͐M̊JnNbNŁASH2 ͂̏INbNɂ
  Al SV1 ͐M̊JnNbNŁASV2 ͂̏INbN
  łB

  ŁAOq́upƓMv̏͂̐voĂBSH1
   M̐擪̒[Ŏn܂hbgłB SH1 = HR +
  HGT1 łBSH2 ͖̒[łB SH2 = SH1 + HSP łB
  悤ɁASV1 = VR + VGT ( VGT ͕ʂ 0 ł)ASV2 = SV1 + VSP
  łB

       #name    clock   horizontal timing   vertical timing    flag
       936x702  65      936 968 1200 1232   702 702 710 737

  ʂȃIvV͕KvA̓mC^[X[hœ삵܂B
  Ŋ܂B

  12.  j^̎dlOgp

  Œg^̃j^̏ꍇAj^̋K葖g𒴂Ă͐΂ɂ
  ܂BĂ܂Ƌ@킩牌oĂ邩܂! }`
  VNj^łAgグƍׂȂ炢낢Ȗ肪o
  \܂̂ŁAӂĂB

  ̋tɁAj^̍ōgш荂sNZNbNgĂr
  ISłBN₷̂͌߂Ăő哯g𒴂
  ƂłBŋ߂̃j^̒ɂ͑g댯Ȓlƃj^ی
  H𑕔Ă̂܂AߐMĂ͂Ȃ܂BɁA
  p̃gXĂȂ(Multisync II ̂悤)Â
  }`VNj^܂B̃j^ɂ͎dlOgpɑ΂h
  @\͂܂肠܂BdH͊mɔĂ܂(Œ
  g̃j^ɂ͂ȂƂ܂)AɈj^ł́AKl
  SĂ̎gш悪Jo[ĂƂ͌܂B̂߁Adq
  HނłȂAʂ̔̂݁AKȏ(X 
  )ːj^o邱ƂɂȂ܂B

  ȂAŖĂ鍪{IȖ̓rfIo̓hCoH
  X[[g(rfIM̗オ̌X)łB̃X[[g͎
  ̃sNZgƕʂ͖֌WłA({[h̃[J[̂悤Ȗ
  ɒӂ𕥂Ă){[h̍ősNZgƊ֌W܂B

  ɒӂƂ܂傤cB

  13.  C^[X[hgp

  (̐߂͂قƂ David Kastrup <dak@pool.informatik.rwth-aachen.de>
  ɂ܂)

  Œ̃hbgNbNł́Aj^̐H肵ăT|[gł
  ȂAmC^[XʂC^[Xʂ̕ڂɂ
  Ȃ菭ȂȂ܂BC^[X[hŏɊJꂽ̂́A
  ߂łB

  C^[X[h́Ag Ȃ킿VSF(ʏLɗǂg
  Ă܂) ̃mC^[X[h̓iƂ]
  Ă܂BAC^[X[h͓gł͊mɗD
  ĂāAʂ͂Ńj^OtBbNX{[h̖ȌE
  ̂łB

  Œ̃tbV[g(Ȃ킿t[g̔A܂ VSF)
  ́AC^[X̃fBXvC͂葽܂BႦ
  ΁A90Hz ̃C^[X\ 90Hz ̔C^[X\܂B
  ÃrfIMш敝Ɣ̐xōς݂܂Bhb
  gNbNƓxŃmC^[X\ƔׂAC^[X
  \̕Ƃ悭ł傤B45Hz ̔C^[X\Ȃǂ́A
  bɂȂ܂B́A90Hz ̃C^[X(1024x768) Multisync 3D
  NgĂAւ񖞑Ă܂BlȉK𓾂邽߂
  ́AŒ 70Hz ̔C^[X\KvƎv܂B

  ӂKvȂƂ܂BC^[X[h͍𑜓xł
  gāA{̋P݂ɋ߂Ȃ悤ɂ܂Bł肵
  ʒu𓾂邽߂ɁAM̕ƈʒuKv邩܂B
  {ɐÂƁAC^[X\͂炬炵Č܂B
  ́Aj[̔wiɂ̂悤ȃhbgp^[I񂾃AvP[V
  Ă܂(XCept, KȂƂɑ̎̒mĂAvP[V
  ł͂̂悤ȂƂ̂͂܂)B́AXCept gƂɂ
  800x600 ɐ؂ւ܂BƂ̂AȂƖڂɂ߂Ă܂
  B

  RŁAŒ 100dpi ̃tHggƁA܂͑̃tHgł
  ̐ɍŒ 2 š݂tHgg܂傤(𑜓x̏
  ɂ́Âǂȕ@ł߂ł傤)B

  ĂA悤ȃtbV[gŔC^[X[hT
  |[gĂ@̎́AăC^[X[hgĂ͂܂
  B

  ȂA𑜓xŃj^OtBbNXJ[ĥǂ炩
  ɒBĂ܂ĕsȂF(ш敝𒴂)\N
  ƎvA𑜓xŃC^[X[hĂ݂Ƃ
  ܂BA̓j^ VSF łɏɋ߂ꍇ͎g
  ܂B

  C^[Xf̐݌v͊ȒPłBmC^[X[hƓ悤
  l܂傤B2 ǉ̌KvłB܂Ȃ ([h
  s̍Ō̐l)ɂȂ΂Ȃ܂BɁA"interlace" tO
  w肵Aj^ɑ΂ۂ̐t[g{ɂȂ邱Ƃ
  Bw肵[h 45Hz ̃[hɌȂA"Interlace" tO͂
  ĂāAj^ 90Hz ̃t[gT|[gKv܂B

  Ⴆ΁A1024x768 ̃C^[X[h̃[hs̏ꍇłB Multisync
  3D  90Hz ̐t[g 38kHz  t[g܂ŃT|
  [g܂B

       ModeLine "1024x768" 45 1024 1048 1208 1248 768 768 776 807 Interlace

  ̃~bǵÃ[hł͂قڌEłB[h "Interlace"
  IvVȂŎw肵ĂAɃj^̐̔\͂̂قƂ
  ł(Ɍ΁Ag̉܂)BA
  ςȂقǂ̂𐶂܂B

  {IȐ݌v[łBj^̐eʂ̔ȉł̃[h݌v
  Ƃ΁A̐̍vɂ "Interlace" IvV
  ܂傤BقƂǂ̏ꍇAfBXvC̕i͔Ɍシ͂
  B

  j^̍őȉ̐g 30% قǒႢgŁA
  j^̎dlȂ悤ɁA~ނ𓾂mC^[X[hg
  ꍇ́AC^[X[hŐ݌v(AԂ񍂂
  𑜓x)悢ʂ𓾂邱Ƃł邩܂񂪁A񑩂͂ł
  B

  14.  ^

  Q. ̗͕̕WIȉʃTCYł͂܂񂪁Ag܂H

  A. ܘ_łB640x480, 800x600 Ƃ 1024x768 gȂ΂ȂȂR
  ͑S܂BXFree86 ̃hCo̓n[hEFARɐݒł
  ɂȂĂ܂Bʂ 2, 3 񎎂Ă݂ΐݒ
  BڎwׂdvȂƂ́AtbV[gőÓȕ\̈Ƃ
  邱ƂłBܖڂU㏞ɂč𑜓xǋȂ悤!

  Q. 65MHz ̃hbgNbN 55KHz  HSF œ𑜓x͂ꂾ
  H

  A. ΂ȂƂ͂܂! ʓIȎ菇ɏ]čƂsA{
  D݂̐ݒɂǂ蒅߁A኱̎šJԂ߂܂B 
  Ă݂ƌ\ŷłB قƂǂ̐ݒł̓rfI\Ă
  ܂܂񂪁Aoŋ߂̃}`VNj^͕ʁAȒPɂ͉
  ܂BAԃj^gOɁAj^Ȃ̃[h̃t
  [gT|[gĂ邱ƂmF܂傤B

  Œg̃j^ɂ͒ӂĂB̎̂܂킵́Aj
  ^\߂邱Ƃ܂BƂ͖LȃtbV
  [ggĂ邱ƂmF܂傤B

  Q. ̕WIȉ𑜓xLڂĂ܂ˁBXconfig ̒ł͐FXWI
  𑜓x܂AԒ߂̐l𒲐ꍇ̃|CgĂ
  B

  A. ܘ_܂傤! ݂ Xconfig ɂuWIv640x480 
  グ܂B̏ꍇAg 25MHz At[ 800  525
  ̎ɖ 59.5Hz ̉ʃtbV[gg܂B ł傤?
  A28MHz ͈ʓIɑ SVGA {[hŎg铮głB
  28MHz  640x480 gꍇAȑOɐ菇ɏ]΁At[
  812(808 Ɋۂ߂܂) 505 ł傤BŃtbV
  [g 68MHz ܂ňグAWlƗǂlɂȂ܂B

  Q. ܂ł̋c_܂Ƃ߂Ă炦܂?

  A. v񂵂܂:

  1. Cӂ̌Œ̓gł́Aō̉𑜓xɍ߂΃tbV[
     gȂ΂Ȃ炸AĂł傤B

  2. 𑜓x]j^T|[gƂ́Aɍhbg
     NbNA܂ DCF  SVGA J[hɓĂB
     hbgNbN͍ɉzƂ͂܂B

  15.  摜\̖C

  A X ̍\`̐lɓ܂BXF86Config  ̐le
  Xg̃Rgď܂BX 𗧂AzbgL[ŐV
  [hɐ؂ւĂ݂܂c摜ςłBꍇAǂ
  ̂ł傤H ʓIȃrfI摜c݂̖Ɖɋ
  B

  (Șc݂̏Cɂ xvidtune(1) GłĂ܂B)

  pX𒲐ĉ摜ړĂ݂ĂBt[ςĉ摜
  gEkĂ(ΓIȈʒû܂܂ɓMړK
  v܂BȂƊgkƓɉ摜̈ړNĂ܂
  )Bʂ̑Ώ@Ɏ܂:

  Ɛ̕\ʒu͓ƗĂ܂B͉摜𐅕ɈړĂ
  ʒuɂ͉eȂA܂tƂƂłBƂ낪gEk
  ͕Kł͂܂B̑傫ςĂ̑傫
  ɂ͉e^AtłAc̕ύXʂ̍v͌肳
  Ă܂BɁAcɑ傫߂ꍇ͂荂hbgNbNɕύX
  ďCKvł傤Bgp\ȉ𑜓xグ邱ƂɂȂ邽
  ߁A͂߂ɖƂ͂Ȃ܂B

  15.1.  摜EɂĂꍇ

  C邽߂ɐMړ܂傤BȂ킿AM
  ̊Jn[ƏI[`Ă鐅̐^񒆂 2 ̐l (8
  ̔{)čs܂B

  摜ɂĂ(Ẻ̕傫āAE։摜ړ)
  ́Al𑝂₵ĂB摜EɂĂ(̉̕傫
  āA։摜ړ)́AM炵ĂB

  15.2.  摜㉺ɂĂꍇ

  C邽߂ɐMړĂBȂ킿A
  M̊Jn[ƏI[`Ă鐂̐^񒆂 2 ̐l
  čs܂B

  摜ɂĂ(̉̕傫āAɉ摜ړ)
  ́Al炵ĂB摜ɂĂ(̉̕傫
  āA։摜ړ)́Al𑝂₵ĂB

  15.3.  摜Ɛ̗ɖcłꍇ

  荂J[hNbNɐ؂ւ܂傤BNbNt@Cɕ̃[
  hꍇAႢ̑x̃[hɊԈč쓮Ă\
  ܂B

  15.4.  摜ɍL()ꍇ

  C邽߂ɂ͐t[𑝂₵(炵)ĂBȂ
  Aŏ̒ 4 Ԗڂ̐lςčs܂B摜ړ̂
  邽߁AM(2 Ԗڂ 3 Ԗڂ̐l)̔ړA
  ΈʒuۑĂĂB

  15.5.  摜ɖcł(ׂȂĂ)ꍇ

  C邽߂ɂ͐t[炵(₵)ĂB
  2 Ԗڂ̒ 4 Ԗڂ̐lςčs܂B摜ړ̂
  邽߁AM(2 Ԗڂ 3 Ԗڂ̐l)̔ړA
  ΈʒuۑĂĂB

  ̋Zp̑głȂ̘c݂͑Ɗ{Iȕ
  ĂAႦΌvZႢƂj^ŎgȂhbgNbNgĂ
  悤ȏꍇ܂B

  ŌɁAt[̂ǂ炩̐l𑝂₹΃tbV[gቺ
  Ă܂ƁA܂̋t邱ƂoĂĂB

  Șc݂̓j^̉摜Β邱Ƃ܂B̕@̒Z
  ́AOtBbNX[h̖𒼂߂ɎRȐݒ(Ho׎̐
  )痣ꂷĂ܂ƁAeLXg[h̉ʂςɂȂĂ܂
  łBāA[hs𐳂ł傤B

  16.  j^̓vbg

  j^[h_CAOvbgɂ́Agnuplot pbP[W(UNIX 
  悤ȃIy[eBOVXep̃t[EFÃvbg)ƃR}
  hC͂j^̓ gnuplot  _CAOvbg
   shell XNvgł modeplot c[KvłB

  modeplot ̃Xg܂:

  #!/bin/sh
  #
  # modeplot -- generate X mode plot of available monitor modes
  #
  # Do `modeplot -?' to see the control options.
  #

  # Monitor description. Bandwidth in MHz, horizontal frequencies in kHz
  # and vertical frequencies in Hz.
  TITLE="Viewsonic 21PS"
  BANDWIDTH=185
  MINHSF=31
  MAXHSF=85
  MINVSF=50
  MAXVSF=160
  ASPECT="4/3"
  vesa=72.5       # VESA-recommended minimum refresh rate

  while [ "$1" != "" ]
  do
          case $1 in
          -t) TITLE="$2"; shift;;
          -b) BANDWIDTH="$2"; shift;;
          -h) MINHSF="$2" MAXHSF="$3"; shift; shift;;
          -v) MINVSF="$2" MAXVSF="$3"; shift; shift;;
          -a) ASPECT="$2"; shift;;
          -g) GNUOPTS="$2"; shift;;
          -?) cat <<EOF
  modeplot control switches:

  -t "<description>"  name of monitor            defaults to "Viewsonic 21PS"
  -b <nn>                 bandwidth in MHz           defaults to 185
  -h <min> <max>          min & max HSF (kHz)        defaults to 31 85
  -v <min> <max>          min & max VSF (Hz)         defaults to 50 160
  -a <aspect ratio>       aspect ratio               defaults to 4/3
  -g "<options>"      pass options to gnuplot

  The -b, -h and -v options are required, -a, -t, -g optional.  You can
  use -g to pass a device type to gnuplot so that (for example) modeplot's
  output can be redirected to a printer.  See gnuplot(1) for  details.

  The modeplot tool was created by Eric S. Raymond <esr@thyrsus.com> based on
  analysis and scratch code by Martin Lottermoser <Martin.Lottermoser@mch.sni.de>

  This is modeplot $Revision: 1.7 $
  EOF
                  exit;;
          esac
          shift
  done

  gnuplot $GNUOPTS <<EOF
  set title "$TITLE Mode Plot"

  # Magic numbers.  Unfortunately, the plot is quite sensitive to changes in
  # these, and they may fail to represent reality on some monitors.  We need
  # to fix values to get even an approximation of the mode diagram.  These come
  # from looking at lots of values in the ModeDB database.
  F1 = 1.30       # multiplier to convert horizontal resolution to frame width
  F2 = 1.05       # multiplier to convert vertical resolution to frame height

  # Function definitions (multiplication by 1.0 forces real-number arithmetic)
  ac = (1.0*$ASPECT)*F1/F2
  refresh(hsync, dcf) = ac * (hsync**2)/(1.0*dcf)
  dotclock(hsync, rr) = ac * (hsync**2)/(1.0*rr)
  resolution(hv, dcf) = dcf * (10**6)/(hv * F1 * F2)
  # Put labels on the axes
  set xlabel 'DCF (MHz)'
  set ylabel 'RR (Hz)' 6  # Put it right over the Y axis

  # Generate diagram
  set grid
  set label "VB" at $BANDWIDTH+1, ($MAXVSF + $MINVSF) / 2 left
  set arrow from $BANDWIDTH, $MINVSF to $BANDWIDTH, $MAXVSF nohead
  set label "max VSF" at 1, $MAXVSF-1.5
  set arrow from 0, $MAXVSF to $BANDWIDTH, $MAXVSF nohead
  set label "min VSF" at 1, $MINVSF-1.5
  set arrow from 0, $MINVSF to $BANDWIDTH, $MINVSF nohead
  set label "min HSF" at dotclock($MINHSF, $MAXVSF+17), $MAXVSF + 17 right
  set label "max HSF" at dotclock($MAXHSF, $MAXVSF+17), $MAXVSF + 17 right
  set label "VESA $vesa" at 1, $vesa-1.5
  set arrow from 0, $vesa to $BANDWIDTH, $vesa nohead # style -1
  plot [dcf=0:1.1*$BANDWIDTH] [$MINVSF-10:$MAXVSF+20] \
    refresh($MINHSF, dcf) notitle with lines 1, \
    refresh($MAXHSF, dcf) notitle with lines 1, \
    resolution(640*480,   dcf) title "640x480  " with points 2, \
    resolution(800*600,   dcf) title "800x600  " with points 3, \
    resolution(1024*768,  dcf) title "1024x768 " with points 4, \
    resolution(1280*1024, dcf) title "1280x1024" with points 5, \
    resolution(1600*1280, dcf) title "1600x1200" with points 6

  pause 9999
  EOF

  modeplot Ă邱Ƃ gnuplot pbP[WꏊmFA
  ɏqׂ郂j^̓lKvł:

  o  rfIш敝 (VB)

  o  g͈̔ (HSF)

  o  g͈̔ (VSF)

  vbgvÓAKmƂ͌Ȃȑf̂߂̊̉
  KvƂ܂Bꂽ_CAO܂ȋLqȂ̂͂̂
  ߂łB̉Ƃ:

  1. SẲ𑜓x́A̌Œ肳ꂽc AR = HR/VR gĂ
     ܂BWIȉ𑜓xł AR = 4/3 ܂ AR = 5/4łBmodeplot v
     O͕W 4/3 肵Ă܂AύX\łB

  2. lꂽ[hł́AƐ̃t[͐Ɛ̉𑜓x
     Œ̔{ɒĂ܂̂ŁAꂼꎟ̂悤ɂȂ܂:

               HFL = F1 * HR
               VFL = F2 * VR

  ܂ȋKƂāAF1 = 1.30  F2 = 1.05 ƂĂ ("t[T
  CY̌vZ"QƂĂ)B

  āA̓gȂ킿 HSF グĂ݂܂B݂̉
  ł́Aꂼ̃hbgNbN DCF ̒lɃtbV[g RR 
  肵Ă܂BȂ킿AHSF ̑SĂ̒lɑ΂āA֐ RR(DCF)݂
  ƂƂłBΎ̂悤ɂē܂B

  tbV[g̓t[TCY̐ςŃhbgNbN̂
  :

               RR = DCF / (HFL * VFL)          (*)

  At[̓hbgNbN𐅕gŊ̂ɓ
  Ȃ܂:

               HFL = DCF / HSF                 (**)

  Oq 2 ̉ɊÂ΁AVFL ̒l HFL ̒l܂Ō点܂:

               VFL = F2 * VR
                   = F2 * (HR / AR)
                   = (F2/F1) * HFL / AR        (***)

  (**)  (***)  (*) ɑƈȉ̌ʂ܂:

               RR = DCF / ((F2/F1) * HFL**2 / AR)
                  = (F1/F2) * AR * DCF * (HSF/DCF)**2
                  = (F1/F2) * AR * HSF**2 / DCF

  HSF, F1, F2  AR Œ肷ƁA_CAO͑oȐɂȂ܂B̋
  ̒̍ŏƍő̐gŋë̎c̋E
  B

  ̈ƒ̌̉𑜓x\܂B (*)  2 Ԗڂ
  ɊÂ܂:

               RR = DCF / (HFL * VFL) = DCF / (F1 * HR * F2 * VR)

  gSẲ𑜓xł̂悤Ȑ`ƂɂāA𑜓xANbN
  gƃj^T|[gł郊tbV[g̊ԂɊ֌W邾낤
  ƂƂɂ킩܂B̐̓j^̓ɂ͈ˑĂ
  񂪁A2 ڂ̉ɂ͈ˑĂ܂B

  modeplot c[͂̍ƂȒPɂ܂Bmodeplot -?  Ɠ͂ĐI
  vVĂBT^IȎs`͈ȉ̂悤ɂȂ܂:

               modeplot -t "Swan SW617" -b 85 -v 50 90 -h 31 58

  -b IvV̓rfȊш敝w肵܂B-v  -h ͐Ɛ
  g͈̔͂w肵܂B

  modeplot ̏o͂ǂނƂ́Aߎ\݂̂ł邱ƂɊoĂ
  BႦ΁AŏM瓾ꂽ HFL ̏𖳎܂
  A肪ɂĂmł͂܂B] ``Ŝ̂
  Ƃ'' ɎĂ(̍p܂)ڍׂȌvZ̑ɂ
  Ȃ܂BȂA\ł邩A邢͂ǂȃg[hIt
  邩ɂĂ͂肷͂łB

  17.  ͎ҁA񋟎҂ɂ

  ̌̕^ Chin Fang <fangchin@leland.stanford.edu> ܂
  B

  Eric S. Raymond <esr@snark.thyrsus.com> ́AChin Fang ̌𕪂
  ₷邽߂ɉƍĕҐA啝ȏs܂B̉ߒ
  ŁABob Crosson <crosson@cam.nist.gov> ɂʂ HOWTO ̑啔
  荞݂܂B

  C^[X[hɊւ鎑͎Ƃ David Kastrup
  <dak@pool.informatik.rwth-aachen.de> ɂ܂B

  Nicholas Bodley <nbodley@alumni.princeton.edu> ̓fBXvC̓
  ւ͂̒ƐĂ܂B

  Payne Freret <payne@freret.org> ̓j^̐݌vɊւ鏬ȋZpIȌ
  Ă܂B

  Martin Lottermoser <Martin.Lottermoser@mch.sni.de>  gnuplot p
  [h_CAO悷ƂACfBAĂA modeplot ̔wi
  ɂ鐔wIȉ͂s܂BzzĂ modeplot ́Aꍇ
  ď Martin ̃XNvgɁAESR Đ݌vƈʉs܂
  B [: ESR Ƃ Eric S. Raymond ̂ƂłB]

  17.1.  {ɂ

  ݂̃o[ẂA{K Hiro Sugawara ̖ Linux
  Japanese FAQ Project XVs܂B|Ɋւ邲ӌ JF v
  WFNg <JF@linux.or.jp> ɘAĂB

  ȉɎ܂B

     v3.0, 9 September 1997
        |:

     o  {K <ikko-@pacific.rim.or.jp>

     o  Hiro Sugawara <hiro@arkusa.com>

        Rg: RNG <hiro@koneeko.linux.or.jp>

     v3.6j, 20 November 1999
        |: P <fujiwara@linux.or.jp>

     v4.1j, 21 January 2000
        XV: P <fujiwara@linux.or.jp>

     v4.2j, 26 Feburary 2000
        XV: P <fujiwara@linux.or.jp>

     v4.4j, 18 March 2000
        XV: P <fujiwara@linux.or.jp>

