  XFree86 rfI HOWTO
  Eric S. Raymond <esr@thyrsus.com>
  v3.0, 8 August 1997
  { K Kazuyuki Okamoto <ikko-@pacific.rim.or.jp>
  Hiro Sugawara <hiro@arkusa.com>
  v2.1, 9 September 1997

  XFree86 ɂĂ茳̃J[h⃂j^̑gݍ킹łǂ̂悤 mode s
  쐬邩܂B XFree86 zz݂͌قƂǂ̕WIȑg
  킹Ɋւč\łf炵@\Ă܂B́̕A
  mode s\ȃj^ƂĂςn[hEFAɃJX^}CY
  Ēꍇɕ֗łB܂Axvidtune gĂ茳̃j^
  ܂KĂȂWI mode sύX̂ɏɂȂ邩܂
  B
  ______________________________________________________________________

  Table of Contents

  1. ӔC
  2. 
  3. rfIfBXvC̓쌴
  4. fBXvCƃA_v^ɂĂ̊bm
     4.1 j^̃rfIMш敝 :
     4.2 ǂĐ䂷邩 :

  5. {dl̓ǂݕ
     5.1 ш敝ɂ :
     5.2 gƍĕ`摬x :

  6. VXe̍\ɂg[hIt
  7. v
  8. t[TCY̌vZ
  9. pƓM
     9.1  :
     9.2  :

  10. Ŝ̂܂Ƃ
  11. j^̎dlOgp
  12. C^[X[hgp
  13. ^
  14. 摜\̖C
     14.1 摜EɂĂꍇ
     14.2 摜㉺ɓĂꍇ
     14.3 摜Ɛ̗ɖcłꍇ
     14.4 摜ɍL () ꍇ
     14.5 摜ɖcł (Ă) ꍇ

  15. j^̓vbgB
  16. ͎ҁA񋟎҂ɂ

  ______________________________________________________________________

  1.  ӔC

  ɂ鎑́Ag̐ӔCɂĂ̂ݎgpĂBЂ
  dlO̎dlŎgpꍇj^Ƃg̗ɏQ^\
  ܂BڍׂȌxɂĂ ``j^̎dlOgp'' ǂłB

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

  ǂ̂߂̗Ȃ]Aᔻ₲Ă esr@snark.thyrsus.com ܂
  肢܂Bg̃j^̓ȖɂĖ@̉񓚂Q肷
  ȓdq[͑tȂłBȂƂĂA̎Ԃ
  ʂɂĂȂ炢炳邾łB̒mĂSĂ̎
  łɂɏĂ܂B

  2.  

  XFree86 T[ogpƁA[Ũ͎rfITuVXeݒ肵
  āÃn[hEFAŗǂ̕@Ŏg悤ɂȂ܂B̎
  ́ArfIJ[hƃj^œKɎgp邽߂̎Ԓ߂̐lg
  Ŕ@ɐ邩׋鏕ƂȂ邱ƂړIƂĂ܂B

  ł͂܂ XFree86 T[oƂ߂̕@񎦂A
  bɎȂ炢낢ƐݒύXĎ̍D݂ɍœK邽߂
  ܂B

  XFree86 3.2 ͂߂ꍇAXFree86  ڂɃrfI̒l
  ӎɁA삷郂j^ [h ΘbIɊȒPɍ쐬
  XF86Setup(1) vO񋟂Ă܂BāAۂɊbƂȂ
  j^ [h ͂قƂǂ̏ꍇAvZKv͂܂BcOȂ
  XF86Setup(1) Ɋ̐A1280x1024 ܂ł̕WIȃrfI 
  [h ɂĂĂ܂BƂĂ\ 1600x1200 Ⴕ
  ͂ȏオ\ȃj^Ăꍇ́AɎgŊbƂȂ
  j^ [h vZȂ΂܂B

  ŋ߂ XFree86 ɂ  xvidtune(1) Ƃc[Ă܂Bg
  Ȃ悤ɂȂ΁Aj^ modeline ̎⒲Ɏɖ𗧂̂
  Ăł傤B̃c[͊ԈႦĎǧʂɂ
  ƂxoċN܂B̕ŌĂ邱Ƃɂ悭
  Axvidtune \锠̒̂肰ȂlQ̈Ӗ킩悤ɂ
  ܂ŕ׋΁AMČI xvidtune g悤ɂȂ͂
  łB

  قƂǓ삵Ă郂[hĂꍇ (ɁAOĐݒ肵Ă
   VESA [h͍EɕЊAA傫肷ł
  A肵Ăł傤) A ``摜\̖C'' ̐߂
  n߂ĂB̐߂͒l傤Ǘǂlɋ߂Â@
  Ăł傤B

  xvidtune(1) ĂꍇAX ̍\t@C̕ύXȂł܂
  ́AX T[o̍ċNȂɁÂ܂܂̏ԂŐV[h̃eXgo
  ܂B XFree86 ̓zbgL[ XF86Config t@C ɒ`Ă
  قȂ郂[hԂړł܂ (ڍׂɂĂ XF86Config.man QƂ
  ) B͍Ԃ玩ƂĂ֗ȋ@\łB
  xvidtune(1) ĂꍇAX ̍\t@CύXȂł܂X
  T[o̍ċNȂɁÂ܂܂̏ԂŐV[h̃eXgo
  B

  zbgL[Xg Ō ɒǉĂBV[hȂ
  Ƃ̕یɁAɓĂ郂[h͕WlƂĎcĂĂB

  3.  rfIfBXvC̓쌴

  rfIfBXvC̓쌴m邱Ƃ XF86Config t@C̐FXȏ
  ɂǂȐ邩𗝉ŏdvłB̒l XFree86
  T[ofBXvCn[hEFAxŐ䂷̂Ɏgp܂B

  fBXvC̓hbg̏W܂肩摜\܂B̃hbgE
  ׂ֕Đ܂B̐ォ牺ׂ֕ĉ摜܂Bhbg
  fBXvC̓dqr[Œ@ꂽƂ܂Bꂼ
  hbgɋψɓdqr[𓖂Ă邽߂ɁÃp^[ŃfBXvC
  𑖍܂B

  ̃p^[̓XN[̍ォn܂AE֐^XN[؂
  悤ɑAXN[̉E[ňU~܂Bēdqr[̓fBX
  vC̍[ɈړA{Ɉړ܂BV̓fBXvC̍
  E֍ŏ̐悤ɑ܂B̃p^[fBXvC̈
  ԉ܂ŌJԂ܂Bꂩdqr[fBXvC̍ォE
  ňړA܂ŏJԂ܂B

  ̋@\ɂ͕ʂ̎ނAC^[XƌĂ΂Ă܂B́Aŏ
  ̔t[ł͈u̐ꂸAڂ̔t[Ŏc
  Ƃ̂łB

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

  dqr[t[ړĂԂƁuIvAfBX
  vC̑SẴhbg͓_Ă܂AfBXvC̉ɂ͍͂
  Ȃł傤BăfBXvC̉ł́Adqr[̐䂪
  ŉ摜cȂĂ܂ł傤B̘c݂炷߁AfBXvC̉
  ̃hbgɂ́Adqr[͂ĂAhbgPȂ悤ɂȂĂ
  BfBXvC̎ۂɕ\̈悪ȂĂ̂́A
  킯Ȃ̂łB

  ĂقdvȂƂ́A\̈`悵ĂȂ
  dqr[ǂȂĂ邩ƂƂłBfBXvC̉[`悷
  邽߂Ɏg͂Ԃ́Adqr[E̒[獶̒[܂Ŗ
  A̎̃CɈړ邽߂Ɏg܂BfBXvC̏[
  щ[`悷邽߂Ɋ|͂Ԃ́Adqr[fBXv
  C̉E獶܂ňړ邽߂Ɏg܂B

  A_v^J[h̓fBXvC̓dqe_SẴhbgŉ摜𐶐
  悤ȐM쐬܂B܂AJ[h͓dqr[E獶Ɉړ
  Ĉ{ƂɐMƌĂ΂M쐬܂BSẴC
  ̍ŌɈ̐M܂BɁAA_v^J[h͓dqr
  [fBXvC̍Ɉړ邽߂̐M܂B
  M͑SẴt[̏I߂ɍ쐬܂B

  fBXvCɂ́Adqr[̈ʒu肳邽߁AMƐ
  M̑OɒZԂ̗]TKvłBdqr[̈艻oȂ
  ƁA摜肵܂B

  ̂ق̐߂ŁA`AƗg悤ɂȂ悤AĂт̊
  {ɐG܂B

  4.  fBXvCƃA_v^ɂĂ̊bm

  XF86Config ̐ݒ荀ڂOɁÅbIȎmĂKv
  ܂B

  o  gpł郂j^̐MƐM̎g

  o  rfIA_v^̓NbNgAȂ킿"hbgNbN"

  o  j^̎gѕ

     j^̓g :

  j^̐ǵÃj^ 1 bԂɕ`鐅̐
  ƂŁA̓j^ɂčłdvȓłBǵA
  j^ 1 bԂɓdqr[cɍs藈肳邱Ƃ̂ł
  񐔂̂ƂłB

  g͕ʁAj^̃}jA̎dl̕łɈꗗɂȂĂ܂B
  g̐l͈ʓI Hz (b̉) ŁAg
  KHz (b̐) ŌvĂ܂Bʏ͈̔͂͐ɂĂ
  50  150HzAɂĂ 31  135KHz xłB

  }`VNj^̏ꍇA̎ĝ͕lƂĕ\Ă
  Bʂ̂̂ɑ̂łǍŒ肵gĂ郂j^
  ܂B̂悤ȃj^ʂ̃j^Ɠlɐݒ͏o܂Aj
  ^̎ɌĂ܂ł傤Bō̉𑜓x
  ȍłƐg̑gݍ킹IĂB
  āAŒgj^ł͐݌vl荂g^ƃj^ɂ߂
  ꂪ̂ŒӂĂB

  ̏̔̕łł́Aǂ\𓾂邽߂̖ڏ̍ō̐
  gw肵}`VNj^̎dlOgpɂȂ薳ڒłB
  ̌xɑ΂鍪wEł闝Rɂ܂Bȍ~ ``j^
  dlOgp'' Ōy܂B

  J[h̋쓮NbN̎g :

  rfIA_v^̎dlɃJ[h̃hbgNbN܂ (hbgNb
  NƂ͉ʂ 1 bԂɕ\ł_̑ł) B̏񂪖ꍇ́AX
  T[oĂ܂BX j^o͂𖳌ɂĂ܂ꍇ
  ANbNƂ̑̏Wo͂ɓfo܂B̏t@C
  Ƀ_CNgꍇAR\[֖߂čėグȂ΂ȂȂ
  ȂĂt@Cɕۑ܂B(ŋ߂ X T[o łׂ͂āANbN
  Ƃ̑̏o͂ X ۂɋNȂŃrfI[hύXȂ
  -probeonly IvVT|[gĂ܂B)

  X ̊JñbZ[Ŵ͎悤ȗɎĂł傤B:

  XFree86 gpĂꍇ:

       XF86Config: /usr/X11R6/lib/X11/XF86Config
       (**) 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`bv̌^łB86C911 ̑Ô̂łB

       (--) S3: chipset driver: s3_generic
       (--) S3: videoram:  1024k
                           -----
                t[obt@̑傫łB

       (**) 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
                         ------------------------------------------------------
                                     \Ȏg MHz ŕ\܂B

       (--) 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 ܂ X/Inside X gĂꍇ:

       WGA: 86C911 (mem: 1024k clocks: 25 28 40 3 50 77 36 45 0 0 79 31 94 65 75 71)
       ---  ------       -----         --------------------------------------------
        |     |            |                 \Ȏg MHz ŕ\킵܂B
        |     |            +-- {[h̃t[obt@̑傫
        |     +-- `bv̌^
        +-- T[o̎

  : Ȃׂ̍Ƃ̓}Vׂ̕ႢɍsȂĉBX ̓Av
  P[VłAfBXN̓ƎԒ߂̃[vՓ˂ƁA
  L͕̐smɂȂ܂B񂩌JԂsA傫ϓ
  Ƃm߂ĉBϓ傫ꍇɂ́A肷܂ŃvZX
  EĂ݂ĂBSVr4 (VXe V [X 4)  gpĂl
  : mousemgr (}EX}l[W) vZX͓ɍ̌łB

  ̂悤ȕsm邽߁AꂽNbN̐̂܂
  Clocks vpeB̒lƂ XF86Config Ɏ荞ŉB͎
  ߂̃[v}~AX Ă݂邱Ƃ̂łNbN̒l̐mȈ
  ^邽߂łBL̗̃f[^gƁÂ悤ɂȂ܂B:

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

  ς₷ׂ|VXeł́A̕@ X ̋NɊ
  邱ƂsvcȎs鏕ɂȂł傤BX NV
  Xêׂ̕ŊԈl𓾂Ă܂Aconfig f[^x[X璚
  xhbgNbN邱ƂoȂAԈ̂
  Ă܂Ƃ蓾̂łB

  4.1.  j^̃rfIMш敝 :

  XFree86 sꍇ́AT[oJ[hTmĎgp\ȍō̃hb
  gNbNĂ܂B

  Ȃ΁Aō̎gp\ȃhbgNbNj^̃rfIMш敝
  TZ܂傤Bŗ^̂łAႦ΁Aڏ̑ш
   30% œł郂j^܂B]Ă郂j^̐
  gp邱Ƃł郊XNɂĈȍ~ŏڍׂɘ_܂B

  ш敝m邱Ƃ͉\ȍ\`茫Ił悤ɂȂ
  BȂ̃fBXvC̕\i (ɍׂ̂߂̃V[v) ɉe
  yڂ܂B

  j^̃rfIMш敝̓}jA̎dl̕łɍڂĂ܂B
  ꍇ́Aj^̍ł𑜓x̂ƂĂB𑜓xш敝
  (܂gpłhbgNbN̑܂ȏl) 𐄒肷邽߂̌o
  Ɏ܂B

          640x480                 25
          800x600                 36
          1024x768                65
          1024x768 interlaced     45
          1280x1024               110
          1600x1200               185

  ƂŁA̕\͐ΓIȂ̂ł͂܂B͕̐WI
  XFree86 [hf[^x[Xł̉𑜓x̍łႢhbgNbNłB
  j^̑ш敝͈ԏ̉𑜓xɗvŏ̑ш敝荂ł傤
  AꂸɃhbgNbN MHz ߂ɎĂ݂ĂB

  ܂AhbgNbN 65MHz ʂႢꍇɂ͑ш敝͂قƂǖ
  ȂȂƂɒӂĂBSVGA قƂǂ̍𑜓x̃j^
  ́A̓j^̃rfIMш敝̌E͂邩ɒႢgł
  Bɗ܂B:

               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

  ԉ̃NX̃j^łA𑜓xɊւĔɃrfIMш敝ɐ
  󂯂邱Ƃ͂܂BNEC }`VN II ǂł (dlɂ
   800x600͕\oȂ) B̃fBXvC 800x560 ̂ݕ\ł
  B̂悤Ȓ𑜓x̏ꍇ́AhbgNbN傫ȃrfIM
  敝KvƂȂA 32Mhz  36Mhz ŏ\ŁA̎gƂj
  ^̃rfIMш敝ł30Mhz 炻ꂽlł͂܂B

   2 ̓gł́AfBXvC̎Ă鐫\肭
  ƕ\Ȃ܂񂪁AłȂ̕iƌ؂Ă
  傤Bܘ_ANEC }`VN II ƍAႦ 36MHz rfIM
  ш敝ĂɉzƂ͂܂BA傫摜c
  gĂȂ΁A͂ҏW铙̈ʓIȍƂɂ͖
  ͂܂B (摜̘c݂܂ɂ傫ꍇɂ́AڂŌĂ
  킩ł傤) B

  4.2.  ǂĐ䂷邩 :

  j^̓Mш敝́ArfIA_v^̃hbgNbNƋɁA\
  ō̉𑜓x肵܂Bn[hEFA̐\ô̓h
  CołBǂȂɗDꂽrfIA_v^⃂j^łAǂfoCXh
  CoȂΕ̎ɂȂĂ܂܂BAL\łȂn[h
  ړIɎgpłfoCXhCoΏ\ɗ܂Bꂪ
  XFree86 ̐݌vNwłB

  5.  {dl̓ǂݕ

  ̐߂ł͎dlӖ邩ƁȂmȂ΂ȂȂƂ
  ܂B悸ŏɁA`܂BɌvZ鎞Ɏgϐʓ
  Ŏ܂B
  [ : ̒`͑Ζ󕗂ɂ܂B]

     horizontal sync frequency (HSF)
        Horizontal scans per second (see above).

     g (HSF)
        b̐ (LQ) B

     vertical sync frequency (VSF)
        Vertical scans per second (see above).  Mainly important as the
        upper limit on your refresh rate.

     g (VSF)
        b̐ (LQ) Bɍĕ`摬x̏ƂďdvB

     dot clock (DCF)
        More formally, `driving clock frequency'; The frequency of the
        crystal or VCO on your adaptor --- the maximum dots-per-second
        it can emit.

     hbgNbN (DCF)
        萳ɂ́A`쓮NbNg'; XK`ш敝'ƌĂԁBA
        _v^̔Mq܂ VCO ̎g --- b`\hbg̍
        B

     video bandwidth (VB)
        The highest frequency you can feed into your monitor's video
        input and still expect to see anything discernible. If your
        adaptor produces an alternating on/off pattern, its lowest
        frequency is half the DCF, so in theory bandwidth starts making
        sense at DCF/2. For tolerately crisp display of fine details in
        the video image, however, you don't want it much below your
        highest DCF, and preferably higher.

     rfIMш敝 (VB)
        j^̃rfI͂ɒ݁Aʂł鉽鎖҂
        Ƃoō̎gBA_v^IIt؂ւ̃p^[
        ꍇAŒ̎g DCF ̔ɂȂ܂Bė
        _̑ш敝 DCF/2 n߂邱ƂłƎv܂Bׂȏ
        ׂ̂肵\䖝Ȃ΁Aō DCF ~Ȃ
        ŁAD݂ō߂ɂĂ܂傤B

     frame length (HFL, VFL)
        Horizontal frame length (HFL) is the number of dot-clock ticks
        needed for your monitor's electron gun to scan one horizontal
        line, including the inactive left and right borders.  Vertical
        frame length (VFL) is the number of scan lines in the entire
        image, including the inactive top and bottom borders.

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

     screen refresh rate (RR)
        The number of times per second your screen is repainted (this is
        also called "frame rate").  Higher frequencies are better, as
        they reduce flicker.  60Hz is good, VESA-standard 72Hz is
        better.  Compute it as

                  RR = DCF / (HFL * VFL)

     ʍĕ`摬x (RR)
        b̉ʍĕ`񐔁Bقጸ܂B60Hzŗ
        A VESA W 72Hz ̕ǂł傤BvZ͂̂悤ɂ
        ܂B

                  RR = DCF / (HFL * VFL)

     [ : Ζ󕗏IB]

     ɂς̓j^ɕ\𑜓xł͂ȂA炩傫Ƃ
     ӂĂBɂĂ͈ȍ~ŏڍׂɐ܂B

     C^[X[h̎g͎ۂ͔̃t[̎gŁA
     87Hz interlaced ̂悤Ɏw肵܂B:T^IȃfBXvC̉ʂ̑S
     ̂ł̓tbJo悤ȎgłASĂ̒P̐̎
     ōĕ`悳܂BvZ̈Ӑ}̓C^[X\̎gSʃt
     [̍ĕ`摬xႦ 43.5Hz vZ邱ƂłBC^[X
     [h͑St[̎gŕ\C^[XłȂ[h\
     i͗DĂ܂BAmɗǂȂƂ̓C^[XłȂ
     g̃t[̎gɈvłB

  5.1.  ш敝ɂ :

  j^Ђ͑ш敝ʂ̔͂ƐFω̃V[v𐧖񂷂̂ō
  ш敝ł邱Ƃ`܂Bш敝傫قǁAׂ摜\
  邱Ƃł܂B

  j^͓dCMpĉ摜\܂BM͈UfW^Ai
  OւƕϊƁA˂ɃAiOg`ƂĎ舵܂B͑
  ́AŒ肵g̒PȔg`̑głƍlȂ
  MHz ͈̔͂ŗႦ 20MHzA40MHzA 70MHz 肵܂Bj^
  rfIMш敝͎c݂鍂g̃AiOMłB

  B̖ړÎ߂ɂ́Aш敝͎Ɏgp\ȃhbgNbN̂悻
  ƂďdvłB

  5.2.  gƍĕ`摬x :

  ʏ̐̓t[̒Ŏۂɕ\镔łB
  ̏uԂɂ͖{͂̓_ʂɋPĂ̂łAĕ`摬
  x\̂Ŗڂɂ͐₦ԖSẲ摜""ƂłB

  ł̊Gŉ܂ :

  ______________________________________________________________________
       _______________________
      |                       |     t[͕b
      |->->->->->->->->->->-> |     dqr[̂悤
      |                      )|     p^[b\
      |<-----<-----<-----<--- |     񐔂łB
      |                       |
      |                       |
      |                       |
      |                       |
      |_______________________|
       _______________________
      |        ^              |     t[
      |       ^ |             |     dqr[̂悤
      |       | v             |     p^[b\
      |       ^ |             |     񐔂łB
      |       | |             |
      |       ^ |             |
      |       | v             |
      |       ^ |             |
      |_______|_v_____________|
  ______________________________________________________________________

  ۂ̃X^[͂ƂĂׂWOUO^̃p^[ĂāAE
  dqr[ēɏ㉺ɂĂ܂B

  āAhbgNbNƃt[̑傫͍ĕ`摬xɊ֌WƂ
  Ƃ܂B`A 1 wc (hz)  1 b 1 łBꂩ
  At[ HFL Ƃt[ VFL ƂꍇɑSẲ
  ʂ𕢂ɂ (HFL * VFL) hbgNbNKvłBJ[h͒`
  b DCF MoĂ܂̂ŁA炩Ƀj^̓dqe͍EA
  ߂āAցA߂Ă𖈕b DCF / (HFL * VFL) Aʏ𓮂
  łB͖bʂ`Ă邩\킵Ă̂ŁA
  ʂ̍ĕ`摬xȂ̂łB

  𑜓xƂ̊֌Wg[hIt̊֌Wɂ̂ŁA̗vɉ
  ĐݒsȂ߂ɂ̊TO𗝉Kv܂B

  eLXg͎oɑîŎɊ֌W}`܂B:

  ______________________________________________________________________
          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)A y ͍ĕ`摬x (RR) ӖĂ܂B_CAO
  œhׂĂ̈̓j^̃rfIɕ\ł̈łB̗̈
  ̂ǂ̓_ƂĂ\\łB

  `R1'  `R2' ̃x (640x480 ̂悤) Œ𑜓xӖ
  ĂA̉𑜓x𕡐̈قȂhbgNbNƍĕ`摬x̑gݍ
  킹łǂĎĂ邩}ƂӖĂ܂BR2 ̐
   R1 ̉𑜓x荂\Ă܂Bꂽ̈̏Ɖ̋E
  PɐǧEl\Ă܂BrfIMш敝̓N
  bNg̏lŁÂɗ̈̉E̐̋Eɓ܂B

  ``j^\vbg'' ł̂悤ȃ_CAOvbgē
  ̃j^̖̏ɂ܂B (X graphics ł͂Ȃɗ
  傤) ̐߂ł͂܂[ǧEḧ̋
  ÊɂĘ_܂B

  6.  VXe̍\ɂg[hIt

  OɎ́Â悤ɕό`ł܂B

               DCF = RR * HFL * VFL

  ܂AhbgNbN肾ƂƁAbԂɂꂾ̃hbg
  `摬xA𑜓x܂͐𑜓xɐU蕪邱ƂłƂ
  łB̐̈𑝂₷Ƒ̐炳Ȃ΂Ȃ܂B

  Aĕ`摬x̓j^̍ő吂g𒴂邱Ƃ͏o܂
  ̂ŁAӂĂB]ė^ꂽhbgNbNŗ^ꂽj
  ^ł́AŋoȂt[̐ς̍ŏȉɂȂ܂B

  ̐ݒIԎɁARR ႷꍇAʂ̂Ŋ߂
  ƂoĂ
  Aĕ`摬x 60Hz ȉɉ͖ł傤Bû
  ł̂ŁAɕqȏꍇ VESA lԍHwW 72MHz ɕۂ
  Kv܂B

  ͑ϖڂɐĥłAlԂ̖ڂ͓KlX̂
  ɑ΂ϐ͂ȂL͈͂łBʂ 90% pxŃj^Ɍ
  ĂꍇɁAÂwiƗǂRgXg̐FOiɎgAPx
  璆ɒȂ΁AԂ 45Hz ʂɏĂKł傤B

  ȃeXĝ͎̒ʂł : xterm -bg white -fg black Ő^
  Ȕwiɍ̑Oi xterm JāA\\ȗ̈SĂB炢
  傫ɂĉBăj^̖邳ő̐ݒl 3/4 ɐݒ
  āAj^ނāAj^ڂŔ`Ă݂ĉ (́A
  qȎӕ̍זE𓭂邽߂ł) BȂɂ
  ȂꍇႵ͈͋͂Ȃ΁AȂɂƂĂ̍ĕ`摬x͒x
  ̂łBłȂAꌩvȂ悤ɌĂA炩ɂ
  Ȃ悤ȂɂĂЂǂڂJɂN܂̂ŁA
  ʂɌlɂȂ閘A荂ĕ`摬xɒĉB

  C^[X[hł́A̗ʂ݂͌̉z𑜓xƎۂ̉ʂ̒
  gɈˑ܂BĎKvɂȂ܂Bt[̎g
  85Hz x͒ႭȂł傤B

  ̂悤ɂčŏ̋ełĕ`摬xIԂƂł܂BHFL 
  VFL I邽߂ɂ́A̗̍]nł傤B

  7.  v

  悤ƂĂJ[O[XP[fBXvC̉𑜓x
  gp\ȃt[obt@̗ʂŐ܂B2 F () ŃO
  [XP[łȂ̏ꍇ́A󂯂邱Ƃ͑܂B

  256 F̃fBXvC̏ꍇ́ArfĨoCg͕\hbg
  ̐KvłB̃oCg͐ԗΐ琬W̓_ 1 _Ƃ
  łBKvȃʂ𓾂ɂ́A 1 {ɕ\_̐ɕ\
  ̐|ĉB800x600 ̉𑜓xfBXvC̏ꍇ
  ́AfBXvCɕ\_̐ 800 x 600 = 480,000 ɂȂ܂B
  A 1 hbg 1 oCgɐ̂ŁAA_v^J[hɓoCg̃rf
  IKvłB

  ]āAʂ́Aʂ (HR * VR)/1024 LoCgPʂɐ؂グ
  KvłB΁A (936 * 702)/1024 = 642K oCgƂȂ
  B] 1M oCg̃΁A]zXN[Ɋ蓖Ă
  XN[o܂B

  Ƃ낪A{[h 512K ꍇ͂̉𑜓x͎g܂Bǂj
  ^ĂƂĂA\ȃrfIɂ̓j^̐\
  Ƃ͏o܂B܂ŁASVGA J[h 1M oCg̃
  ĂƂĂAj^ō 800x600 \łȂȂ΁A
  ̍𑜓x͂ǂĂƂ̂łB

  vʂ葽ĂĂSzȂŉBXFree86 ͗]
  ŕ\̈XN[ł悤ɂ܂ (zXN[̑傫
  ̃p[^ɂĂ XF86Config t@C̕QƂĉ) B
  A512K oCg̃𓋍ڂJ[h 512,000 oCgł͂ȂA{
   512 x 1024 = 524,288 oCg̃ڂĂ邱ƂoĂ
  B

  S3 J[h SGCS X 삵ĂāA 16 F ( 1 sNZ 4
  rbg) ̏ꍇAXconfig t@C [x 4 Ɛݒ肷΁AJ[h͔{̉
  xg܂BႦ΁AS3 J[h͒ʏ 1024x768x256  (1024x768 ̉
  x 256 F) łA[x 4 ɂ 1280x1024x16  (1280x1024 ̉𑜓x
   16 F) g悤ɂȂ܂B
  [ : [xƂ͐FO[XP[\rbgłB]
  8.  t[TCY̌vZ

  x : ̕@̓}`VNj^̂߂ɊJ܂BA̕
  @͌Œgj^ł܂sm܂񂪁Aۏ؂ł܂B

  ŏɍő̎gp\ HSF  DCF āA\񐔂vZ
  B

  Ⴆ΁A 65MHz ̃hbgNbN Sigma Legend SVGA J[hƁA55KHz 
  g̃j^gĂƉ肵܂BDCF / HSF vZ
  1181 Ƃʂ܂B

  Aŏ̍p̋Z̕З؂g܂傤B̎̓Ƃ߂
  8 ̔{Ɋۂ߂ĉB 8 rbgWX^A 3 rbg
  炵 11 rbg̒l𓾂悤 SVGA  S3  VGA 䑕uɂėL
  łB ATI 8514/A ̂悤ȑ̃J[hł͂̂悤ȗv͂Ȃm
  ܂񂪁AX͐mȒm킹Ă͂܂񂵁Aۂ߂ɂĕss
  ȂƂ邱Ƃ͂܂B]Đ\񐔂 1176 Ɋۂ
  ܂B

  ̐ (DCF / HSF  8 ̔{Ɋۂ߂) ͍ŏ HFL Ƃėp
  Ƃo܂BႢ HSF œMݒ肷΁Aƒ HFL
  (܂A葽̉ʂ̐̃hbg) ܂B
  AxĂ葽邿̑xɕQł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
  𑜓x 3/4 ɂȂ悤ɐ𑜓xݒ肵܂傤B̗ł́A708
  ɂȂ܂Bۂ VFL 𓾂ɂ́A1.05 | 743 ɂȂ܂B

   4:3 ɂ --- \̕ƍ 4:3 ̔䗦͑̉
  lA (1 + sqrt(5))/2 ɋ߂lłBlԂ͂̎̋`čD܂
  v悤ɂłĂ悤łB̂߃uEǂ 800x600, 640x480 
   1024x768 ƂWIȉ𑜓x݂͂Ȃ̉̋ߎlɂȂ
  ܂B͐SwIȗvłāAZpIȗvł͂܂
  B̕ʂ̑傫LɊpł̂ł΁A񉩋
  gƂ߂炤R͉܂B

  ǁAHFL=1176  VFL=743 Ƃ܂B65MHz  2 ̐̐ςŊ
  ƁA\ɍČNɗǂ 74.4Hz ̍ĕ`摬x܂Bf炵
  I VESA W藧hł傤I ܂ɁA炭\zĂ
  800x600  944x708 Ƃ𑜓xꂽ̂łB{ɑf
  I

   ( 76 Hz ) ĕ`摬xǂ邱Ƃ\łBɂ́A
  i 2 KHz 炢głj^Ƃ
  ƁA VFL 炩 (܂A̗Ō 944  75% 
  ) Ƃ𗘗p܂B "I[o[hCu" 
  ݂OɁAȂ̃j^̓dqe 76 Hz ȏłł邱Ƃ
  mFĂB (Ⴆ΁AlĈ NEC 4D ł͂͏o܂B
   75 Hz  VSF ݂̂pł܂B)

  ȏオAX^\ɂĂ̒PȌvZƊ{IȎ̂قƂǂłB
  ƂǍpłłłˁB

  9.  pƓM

  AőI񂾃hbgNbNΉɌvZ HFL/VFL ̐A
  ȍĕ`摬xA\ VRAM  (rfI) 邱Ƃm
  F܂Bꂩ炪{̍pł -- ǂœMo
  mKv܂B

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

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

  9.1.   :

  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^̕\\̈ɂƂ߂邽
  łB

  ̏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 ̗lɎۂɏcXN[܂ (AۂN
  ܂) B

  K^Ȃ΁Aj^̓M̎̕dlɋLڂĂł傤B
  LڂȂꍇɂ́A炪{̍p̎n܂AAA

  ł͏ssKvł傤BقƂǂ̏ꍇ
  ́AM 3.5  4.0 }CNbƉ肷ΈSłB

  ̓Iɂ́AHSP  3.8 }CNbɂ܂傤 (̒l͎n߂
  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voĉ]

  ̐Ђ̓hbg萅̃t[p^ŌςĂ
  ܂B̗p䗗B:

     active time (HAT)
        ғ (HAT) ~bɊZ HR ɑ.  HAT * DCF = HR.

     blanking time (HBT)
        󔒎 (HBT) ~bɊZ (HFL - HR) ɑ.  HBT * DCF =
        (HFL - HR).

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

     sync time
        Ԃ܂ HSP ł.

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

  9.2.   :

  O̊Gɖ߂āA247 NbNG̒łǂ̂悤ɒu炢ł
  H

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

  ŏ 1176  1184 ֏グāA 944  936 ։ĂBāAႢ
   1184-936= 248 ɂȂ܂B`A߂Â܂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 ?

  I Ă݂܂傤A936% 8==0 łA܂ (936+32)% 8==0 
  BA936+32=968A968+227=1195A1195+32=1227 ƂȂ܂Bӂނ
  ށAȂɈ͂܂BA8 ̔{ɂ͂ȂĂ܂
  ŁA1232 Ɋۂ߂ĉB

  AM HR  HFL ̂傤ǐ^񒆂ɒuƂoȂƂ
  ݓIȍ܂BKɂA1232-32=1200  8 ̔{ł鎖
  ƁA (1232-32)-968=232  3.57 }CNb (232/65) ƂÓȒ
  MɑΉ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B
  ł傤B

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

  ʍĕ`摬x 65Mhz/(737*1232)=71.6 Hz ɂȂ܂Błf炵
  łˁB

  lɐM̔zu}܂ :

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

  \f[^̏IɓM𔭐M܂BVGT ͓M
  ی쎞ԂłBقƂǂ̃j^ VGT  (ی쎞Ԗ) ŉK
  삵Ałی쎞ԖłB2,3 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

  ̐Ђ̓hbg萂̃t[p^ŌςĂ
  ܂B̗p䗗B:

     active time (VAT)
        ғ (VAT) ~bɊZ VR ɑ.  VAT * VSF = VR.

     blanking time (VBT)
        󔒎ԃ~bɊZ (VFL - VR) ɑ.  VBT * VSF = (VFL -
        VR).

     front porch (VFP)
        tg|[` (VFP) This is just VGT.  ܂ VGT ł.

     sync time
        Ԃ܂ VSP ł.

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

  10.  Ŝ̂܂Ƃ

  XF86Config t@C̃rfI[h ( Video Modes ) \͐s̐ŏo
  ĂāAꂼ̍s X T[o[gp 1 ̃[h̊SȎdl
  \킵Ă܂B̍ڂ͖̐߁AhbgNbN߁A߁A߂ 4
  ̐߂ɕ܂B

  ̐߂ 1 ڂŁAs̎cŎw肵ĂrfI[ĥ̖łB
  ̂́A XF86Config t@C̃OtBbNhCoݒ߂ "Modes" s
  ŎQƂ܂B݂̍sO̍sƓ̂ȂΖ̂͏ȗo܂B

  hbgNbN߂̓rfI[hs̍ڂ DCF ƌĂłhbgNb
  N݂̂܂B̐߂ō쐬鐔hbgNbNƂĂ̍ڂ
  ܂B

  ߂͂ꂼ̐ʂ̏łǂ̂悤ɍ쐬邩 4 ڂŏ
  ܂Bŏ̍ڂ HR ƌĂłf\P 1 {hbg
  ł邩܂B 2 Ԗڂ̍ڂ͂ǂ̃hbg琅Mn܂
  ܂B 3 Ԗڂ̍ڂ͂ǂ̃hbgŐMI邩
  ܂B 4 Ԗڂ̍ڂ͑St[ (HFL) w肵܂B

  ߂ 4 ڂŏ܂Bŏ̍ڂ͉ʏɕ\鑖̐
  ܂ (VR)B 2 Ԗڂ̍ڂ͐MԖڂ̐n܂邩
  ܂B 3 Ԗڂ̍ڂ͐MԖڂ̐ŏI邩܂B4
  Ԗڂ̍ڂ͑St[܂B

   :

            #̐ [hNbN (14) (14)
            #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)

  XF86Config ł́AŋPĂhbg̐APĂhbg瓯
  M̊Jn_܂ł̃hbgAM̎ԕ̃hbgƓM
  I_̃hbgA𑫂킹 1 {̃hbg
  vZł܂B̃hbg͈ꗥ 8 Ŋ؂鐔lłȂ
  ܂B

   :

  ̐l : 800 864 1024 1088

  ̗͋PĂhbg (800)AēJn_̃hbg (864)A
  I_̃hbg (1024)A͐̍Ō̃hbg (1088) ƂȂ
  ܂B

  SĂ̐̐ (800A864A1024  1088)  8 Ŋ؂鎖ɂ
  xӂĉB͐̐ɂ͓Ă͂܂܂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

   :

  ̐l : 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BLɂāAXF86Config ֏ޕKvȑSĂ̒l
  ͎̗lł:

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

   SH1 ͐M̊JnNbNŁASH2 ͂̏INbNɂ
  Al SV1 ͐M̊JnNbNŁASV2 ͂̏INbN
  łB

       #̐ [hNbN (14) (14) IvV
       #name    clock   horizontal timing   vertical timing    flag
       936x702  65      936 968 1200 1232   702 702 710 737

  ʂȃIvV͕KvA̓mC^[X[hœ삵܂B
  Ŋ܂B

  11.  j^̎dlOgp

  Œg^̃j^̏ꍇAj^̋K葖g𒴂Ă͐΂ɂȂ
  ܂BĂ܂Ƌ@킩牌oĂ܂m܂!
  }`VNj^łAgグƂׂ͍Ȃ炢낢
  肪o\܂̂ŁASɎ~߂ĂȂ΂Ȃ܂B

  j^̍ōgш荂sNZNbNgĂArIQ
  B (: sNZNbNj^̑ш敝̔{ɂȂƁAF\@\
  ̗_IȌEɒBĂ܂܂B ԎɗU쓮M
  W{nɊւ Nyquist ̗_̒PȉpŁAǂĂ͂킩
  łˁB)

  ߓxɍőƂ݂ȂĂ铯g͋^킵łBŋ߂̃j^̒
  ́A댯ȑgɑ΂ăj^悤ȕیH𑕔Ă
  ̂܂AߐMĂ͂Ȃ܂BɁAp̃gX
  ĂȂ(Multisync II ̂悤)Â}`VNj^
  ܂B̃j^ߕׂی삷鎖͂ł܂Bd
  H͊mɔĂ܂AɈj^ł́AȂ炸l
  SĂ̎gшJo[ĂƂ͌܂B̂߁AdqH
  ނ̂łȂAʂ̔̂݁AKȏ(X ܂)
  ːj^o邱ƂɂȂ܂B

  шɂĂЂƂ؂ȂƂ́Aj^̓̓Cs[_X̓j^
  ̑шŋK肳Ă̂ŁAggƔ˂NAy
  ʏ̊ƓdgQN\܂B

  ȂAŖƂȂĂ{IȖ蕔́ArfIo̓h
  CoH̃X[[g (rfIM̗オ̌X) ŁA͒ʏ
  ۂ̃sNZgƂ͖֌WłA({[h̐҂̂悤Ȗ
  ӂ𕥂Ă) {[h̍ősNZgƊ֘A܂B

  ɒӂƂ܂傤AAA

  12.  C^[X[hgp

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

  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^OtBbN{[h̖ȌEĂ
  ̂łB

  Œ̍ĕ`摬x (Ȃ킿t[g̔A܂ VSF) ł́AC
  ^[X̃fBXvC͂葽܂BƂ΁A 90Hz 
  C^[XfBXvC 90Hz ̃mC^[XfBXvC
  ܂BǂÃrfIMш敝Ɣ̐xł݂܂B
  hbgNbNƓxŃmC^[XfBXvCƔׂ
  AC^[XfBXvĈقƂ悭ł傤B 45Hz 
  mC^[XfBXvCȂǂ́AbɂȂ܂B́A90Hz ̃C
  ^[X (1024x768)  Multisync 3D ͉NgĂāAւ񖞑
  Ă܂BlȉK𓾂邽߂ɂ́AŒ 70Hz ̃mC^[X
  fBXvCKvƎv܂B

  ӂKvȂƂ܂BC^[X[h͍𑜓xł
  gāA{̋P݂ɋ߂Ȃ悤ɂ܂Bł肵
  ʒu𓾂邽߂ɁAM̕ƈʒuKv邩܂B
  {ɐÂƁAC^[X 炬炵Č܂B́A
  j[̔wiɂ̂悤ȃhbgp^[I񂾃AvP[V
  Ă܂(XCeptAKȂƂɑ̎̒mĂAvP[Vł
  ̂悤ȂƂ̂͂܂)B́AXCept gƂɂ
  800x600 ɐ؂ւ܂BƂ̂͂ȂΖڂɂ߂Ă܂
  B

  RŁAŒ 100dpi tHggƁA܂͂ق̃tHgł
  r[Œ 2 {݂̌tHgg܂傤(𑜓xɂ́A
  ̂ǂȕ@ł߂ł傤)B

  Ėܘ_Alȍĕ`摬xŃmC^[X[hT|[gĂ
  @̎̓C^[X[hgƂ͂ł܂BȂA
  𑜓xŃj^OtBbNJ[ĥǂ炩̏ɒBĂ܂
  sȂF (ш敝𒴂) \NƎvA
  𑜓xŃC^[X[hĂ݂Ƃ܂Bܘ_A
  ̓j^ 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

  13.  ^

  Q. ɂ͕WIȉʃTCYł͂܂񂪁Ag܂H

  A. ܘ_łB640x480, 800x600 Ƃ 1024x768 gȂ΂ȂȂR
  ͂܂܂BXFree86 hCo̓n[hEFARɐݒł
  悤ɂȂĂ܂BʁA2A3 񎎂Ă݂ΐݒ
  Bݒ𓖂Ă̂ɏdvȂƂ́Aĕ`摬xłÓȕ\
  ̈łB𑜓xǋėܖڂUɑ㏞𕥂Ƃ̂
  悤ɂĂB

  Q. 65Mhz ̃hbgNbN 55Khz  HSF œ𑜓x͂ꂾ
  H

  A. ΂ȂƂ͂܂I 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܂ˁB XF86Config ̒ł͐FXW
  Iȉ𑜓x܂AԒ߂̐l𒲐ꍇ̃|Cg
  B

  A. ܘ_܂傤I ݂ XF86Config ɂ "WI" 640x480 
  Ɏグ܂B̏ꍇAg 25MHz At[ 800 
  525 ̎ɖ 59.5Hz ̉ʍĕ`摬xg܂B łH 
  ʓIɑ SVGA {[h̓g 28MHz g܂B28MHz 
  640x480 gꍇAȑOɐ菇ɏ]΁At[ 812 
  505 ɐݒł܂Bōĕ`摬x 68MHz ܂ňグAWl
  肩Ȃサ܂B

  Q. ܂ł̋c_܂Ƃ߂Ă炦܂H

  A. v񂵂Č :

  1. Cӂ̌Œ̓gł́Aō̉𑜓xɍ߂΍ĕ`摬x
     Ȃ΂Ȃ炸AĂł傤B

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

  14.  摜\̖C

  A X ̍\`̐lɓ܂BXF86Config  ̐le
  Xg̃Rgď܂BX 𗧂AzbgL[ŐV
  [hɐ؂ւĂ݂܂ ... 摜ςłBꍇAǂ
  ΂̂ł傤HʓIȖƉɋ܂B

  (Șc݂̏Cɂ xvidtune(1) GłĂ܂B)

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

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

  14.1.  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

  14.2.  摜㉺ɓĂꍇ

  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

  14.3.  摜Ɛ̗ɖcłꍇ

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

  14.4.  摜ɍL () ꍇ

  C邽߂ɂ͐t[𑝂₵ (炵) ĂB
  킿Aŏ̒ 4 Ԗڂ̐lςčs܂B摜ړ
  邽߁AM ( 2 Ԗڂ 3 Ԗڂ̐l) ̔ړ
  AΈʒuۑĂĂB

  14.5.  摜ɖcł (Ă) ꍇ

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

  ̋Zp̑głȂ̘c݂͑Ɗ{Iȕ
  ĂAႦΌvZႢƂj^ŎgȂhbgNbNgĂ
  悤ȏꍇ܂B

  ŌɁAt[̂ǂ炩̐l𑝂₹΍ĕ`摬xቺĂ܂
  ƁA܂̋t邱ƂoĂĉB

  15.  j^̓vbgB

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

  ______________________________________________________________________
  #!/bin/sh
  #
  # modeplot -- generate X mode plot of available monitor modes
  # modeplot -- gp\ȃj^̃[h X [hvbg𐶐܂B
  #
  # Do `modeplot -?' to see the control options.
  # `modeplot -?' Ɠ͂ƐIvV邱Ƃł܂B
  #
  # ($Id: XFree86-Video-Timings-HOWTO.sgml,v 1.1 1999/02/26 17:19:32 morimoto Exp $)

  # Monitor description. Bandwidth in MHz, horizontal frequencies in kHz
  # and vertical frequencies in Hz.
  # j^̐Bш敝 MHz ŁAg kHz ŁAƐg
  # Hz Ŏw肵܂傤B
  TITLE="Viewsonic 21PS"
  BANDWIDTH=185
  MINHSF=31
  MAXHSF=85
  MINVSF=50
  MAXVSF=160
  ASPECT="4/3"
  vesa=72.5       # VESA-recommended minimum refresh rate
                  # VESA-̍ŏĕ`摬x
  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
  modeplot XCb`:

  -t "<>"         j^              Wl "Viewsonic 21PS"
  -b <nn>                 ш敝 MHz          Wl 185
  -h <ŏ> <ő>        ŏƍő HSF  kHz  Wl 31 85
  -v <ŏ> <ő>        ŏƍő VSF  Hz   Wl 50 160
  -a <AXyNg>       AXyNg            Wl 4/3
  -g "<IvV>"   gnuplot ֓nIvV

  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>

  -b, -h  -v IvV͕K{ŁA-a, -t, -g ̓IvVłB
  -g ŃfoCX^Cv gnuplot ɓn܂B]ėႦ modeplot 
  o͂̓v^Ƀ_CNg܂Bڍׂ  gnuplot(1) ̃}jA
  䗗B

  modeplot c[ Eric S. Raymond <esr@thyrsus.com> 
   Martin Lottermoser <Martin.Lottermoser@mch.sni.de> ɂ
  ͂ƈꂩ珑R[hɍ쐬܂B
  This is modeplot $Revision: 1.1 $
  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
  # @̐lłBcOȂAvbg͂̐lύX邱Ƃɑ΂
  # ɕqłB܂̐lŊ̑\Iȃj^Ŏۂɂ܂
  # sȂꍇ܂BX̓[h_CAO̊TZނ疳擾ł
  # lɂȂ悤ɏCĂ܂B̐l ModeDB f[^x[X
  # ʂ̐瓱o܂B
  F1 = 1.30       # 𑜓xt[ɕϊ搔
  F2 = 1.05       # 𑜓xt[ɕϊ搔

  # Function definitions (multiplication by 1.0 forces real-number arithmetic)
  # ֐` (1.0 |Ǝۂ̐̌vZƂȂ)
  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
  # ̃x`
  set xlabel 'DCF (MHz)'
  set ylabel 'RR (Hz)' 6  # Put it right over the Y axis
                          # Y ̉Eɂ
  # Generate diagram
  # _CAO𐶐
  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^̓lKvłB:
  o  rfIш敝 (VB)

  o  g͈̔ (HSF)

  o  g͈̔ (VSF)

  vbgvÓAKmƂ͌Ȃȑf̂߂̊̉
  KvƂ܂Bꂽ_CAO܂LqłłȂ̂͂
  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 ƂĉB ("t[T
  CY̌vZ"QƂĂB)

  āA̓gȂ킿 HSF グĂ݂܂B݂̏
  ł́Aꂼ̃hbgNbN DCF ̒lɍĕ`摬x RR 
  Ă܂BȂ킿AHSF ̑SĂ̒lɑ΂āA֐ RR(DCF) ݂
  ƂƂłBΎ̂悤ɂē܂B

  ĕ`摬x̓t[TCY̐ςŃhbgNbN̂łB:

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

  At[̓hbgNbN𐅕gŊ̂ɓ
  Ȃ܂B:

               HFL = DCF / HSF                 (**)

  VFL  HFL  Oq̓̉Ō炳ꂽ̂łB??:

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

  (**)  (***)  (*) ɑ:

               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 (*) ɂ
  2 Ԗڂ̉ɂȂ܂B:

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

  gSẲ𑜓xł̂悤Ȑ`ɂāA𑜓xANbN
  gƃj^T|[głĕ`摬x̊ԂɊ֌W邠邾낤Ƃ
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  modeplot c[͂̍ƂȒPɂ܂Bmodeplot -?  Ɠ͂ĐI
  vVĂBT^IȎs`͎̂悤łB:

               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܂
  '' ɎĂ(̍p𔺂) ڍׂȌvZɑウ邱Ƃ͂
  ܂BȂA\Ƃǂȃg[hIt邩
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  16.  ͎ҁA񋟎҂ɂ

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

  Eric S. Raymond <esr@snark.thyrsus.com> AĕҐāA Chin
  Fang ̌𕪂₷Ȃ悤ɑK͂ɏ܂B̉ߒ
  ŁABob Crosson <crosson@cam.nist.gov> ɂFX how-to 𓝍
  ܂B

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

  Martin Lottermoser <Martin.Lottermoser@mch.sni.de>  gnuplot p
  [h_CAO悷鎖̒zɊ^Amodeplot ̔wɂ鐔
  wIȉ͂s܂BzzĂ modeplot ́AMartin ̌
  gnuplot ̓̏ꍇ̃XNvgESR Đ݌vƈʉs܂B
  [ : ESR  Eric S. Raymond łB]
  [{Ŏӎ : Rg𒸂B
  Yasu Hiro YAMAZAKI <hiro@koneeko.linux.or.jp>
  ]

