Date: 20 Apr 1996 00:00:01 EST

  Walter Roberson <roberson@ibd.nrc.ca> writes: Here's a first draft.
  Some of the fine details might be off a little, especially with respect
  to older systems. CPU type is important in determining which graphics
  options are supported.

  Fields are

  model: cpu@speed: audio notes
  gfx code name (gfx market name ["gfxinfo board name: #bitplanes,
     #Z planes, implementing hardware])

  4D20: IP6@12: /dev/audio (8 bit u-law)
  Da Vinci ([24, no Z]),
  Eclipse (B ["VGR2"], G ["GR1": 24, 24 Z, RE1|RE2],
     TG ["GR1": 24, 24 Z, RE1|RE2])

  4D25: IP6@20: /dev/audio (8 bit u-law)
  Da Vinci ([24, no Z]),
  Eclipse (B ["VGR2"], G ["GR1": 24, 24 Z, RE1|RE2],
     TG ["GR1": 24, 24 Z, RE1|RE2])

  4D30: IP12@30: Indigo-type audio optional
  Eclipse (B ["VGR2"], G ["GR1": 24, 24 Z, RE2], TG ["GR1": 24, 24 Z, RE2]),
  Express (XS ["GR2", 8, no Z, 1 GE7, 1 RE3],
      XS24 ["GR2": 24, no Z, 1 GE7, 1 RE3],
      Elan ["GR2-Elan": 24, Z, 4 GE7, 1 RE3])

  4D35: IP12@36: Indigo-type audio optional
  Eclipse (B ["VGR2"], G ["GR1": 24, 24 Z, RE2], G ["GR1": 24, 24 Z, RE2]),
  Express (XS ["GR2", 8, no Z, 1 GE7, 1 RE3],
      XS24 ["GR2": 24, no Z, 1 GE7, 1 RE3],
      Elan ["GR2-Elan": 24, Z, 4 GE7, 1 RE3])

  4DRPC (R3000 Indigo): IP12@33: audio built in
  Express (XS ["GR2", 8, no Z, 1 GE7, 1 RE3],
      XS24 ["GR2": 24, no Z, 1 GE7, 1 RE3],
      XSM ["GR2": 24, no Z, 4 GE7, 1 RE3],
      Elan ["GR2-Elan": 24, Z, 4 GE7, 1 RE3]),
  Starter/Light (Entry ["LG1": 8, soft Z, LG2, REX])

  4D4RPC? (R4000 Indigo): IP20: audio built in
  Express (XS ["GR2": 8, no Z, 1 GE7, 1 RE3],
      XSM ["GR2": 24, no Z, 4 GE7, 1 RE3],
      XZ ["GR2-XZ":  24, Z, 2 GE7, 1 RE3],
      Elan ["GR2-Elan": 24, Z, 4 GE7, 1 RE3])
  Starter/Light (Entry ["LG1MC": 8, soft Z, LG2, REX]),

  4D50: IP4@12.5: no audio
  Clover1 (B, G [optional Z])

  4D60: IP4.5@16: no audio
  Clover1 (B, G [optional Z])

  4D70: IP4@12.5: no audio
  Clover1 (B, G [optional Z]),
  Clover2 (GT [Z], GTX [Z])

  4D80: IP4.5@16: no audio
  Clover2 (GT [Z], GTX [Z])

  4D85: IP4.5@16: no audio
  Clover2 (GT [Z], GTX [Z])

  4D120: IP5@16.7: Vigra VME audio optional (not AL compatable)
  Clover2 (GTX ["GTX": GM2, GE4, RM1, RV2]),
  Stapuft (SKY, VGX ["VGX": IMP3]),
  Venice (RealityEngine ["RE": 8 GE8, 2 RM4])

  4D210: IP9@25: Vigra VME audio optional (not AL compatable)
  Clover2 (GT ["GT": GM2, GE4, RM1, RV1], GTX ["GTX": GM2, GE4, RM1, RV2]),
  Stapuft (VGX ["VGX": IMP3])

  4D2[248]0: IP7@25: Vigra VME audio optional (not AL compatable)
  Clover2 (GT ["GT": GM2, GE4, RM1, RV1], GTX ["GTX": GM2, GE4, RM1, RV2]),
  Stapuft (VGX ["VGX": IMP3], VGXT/SKY ["VGX": IMP5])

  4D310 (Crimson): IP17: Vigra VME audio optional (not AL compatable)
  Clover2 (GTX ["GTX":  GM2, GE4, RM1, RV2]),
  Express (XS ["GR2": 8, no Z, 1 GE7, 1 RE3],
    XS24 ["GR2": 24, no Z, 1 GE7, 1 RE3],
    Elan ["GR2-Elan": 24, Z, 4 GE7, 1 RE]),
  Light (Entry ["LG1"]),
  Stapuft (VGX ["VGX": IMP3], VGXT/SKY ["VGX": IMP5])
  Ultra (Extreme ["GU1-Extreme", 32 Z]),
  Venice (RealityEngine ["REC": 8 GE8, 2 RM4]),

  4D3[248]0: IP7@33: Vigra VME audio optional (not AL compatable)
  Clover2 (GTX ["GTX": GM2, GE4, RM1, RV2]),
  Stapuft (VGX ["VGX": IMP3], VGXT/SKY ["VGX": IMP5]),
  Venice (RealityEngine ["RE"])

  4D4x0: IP7@40: Vigra VME audio optional (not AL compatable)
  Stapuft (VGX ["VGX": IMP3], VGXT ["VGX": IMP5]),
  Venice (RealityEngine ["RE"])

  Indy: IP22: audio built in
  Express (XZ ["GR3-Elan": 24, Z, 4 GE7, 1 RE3.1]),
  Newport (XL ["NG1": 8|24, soft Z, NG1, REX3])

  Indigo2: IP22: audio built in
  Express (XZ ["GR3-Elan": 24, Z, 4 GE7, 1 RE3.1]),
  Newport (XL ["NG1": 8|24, soft Z, NG1, REX3]),
  Newpress (Extreme+XL ["GU1-Extreme": 32 Z]),
  Ultra (Extreme ["GU1-Extreme", 32 Z])

  Onyx: IP19: ASO audio optional, Vigra VME audio optional (*is* AL
    compatable!)
  Venice (RealityEngine ["RE": 8 GE8, 2 RM4],
    RealityEngine2/VTX ["REV": 12 GE10, 2 RM4 or RM5])

  Notes:

  See http://www.sgi.com/Archive/comp.sys.sgi/audio/1994/Aug/0082.html
  for more details on audio on VME machines.

  It is not certain that VGR2 graphics is {IP6,IP12} "B" series.

  The 4D50 thru 4D85 have an audio channel, but there is no
  documentation on it and there is no SGI or third party support for it.
  SGI does not seem to have discussed it at all in the newsgroups.

  XSM graphics seems to be quite rare. Elan without a Z buffer? The
  newsgroups have mentioned it only once, but I have one so I'm sure it
  exists.

  The high-end graphics list is probably incomplete.

  Slashes usually indicate points I'm not entirely clear on. For example
  I'm unclear on whether Skywriter graphics is different than VGTX.