identify Silicon Graphics chipsets
  
  Silicon Graphics Inc. (SGI) [PCI vendor ID 10A9]
  
  [0001] Crosstalk to PCI Bridge
  [0002] Linc I/O controller
  [0003] IOC3 I/O controller
  [0004] O2 MACE
  [0005] RAD Audio
  [0006] HPCEX
  [0007] RPCEX
  [0008] DiVO VIP
  [0009] Alteon Gigabit Ethernet
  [0010] AMP Video I/O
  [0011] GRIP
  [0012] SGH PSHAC GSN
  [1001] Magic Carpet
  [1002] Lithium chipset (CPU bridge, Graphic-Subsystem, Network, IEEE1394, 2xPCI 
  64bit, USB, audio)
  [1003] Dual JPEG 1
  [1004] Dual JPEG 2
  [1005] Dual JPEG 3
  [1006] Dual JPEG 4
  [1007] Dual JPEG 5
  [1008] Cesium
  [2001] Fibre Channel
  [2002] ASDE
  [8001] O2 1394
  [8002] G-net NT
  Cobalt chipset