Contents of /alx-src/tags/kernel26-2.6.12-alx-r9/Documentation/sgi-visws.txt
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Wed Mar 4 11:03:09 2009 UTC (15 years, 6 months ago) by niro
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Wed Mar 4 11:03:09 2009 UTC (15 years, 6 months ago) by niro
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Tag kernel26-2.6.12-alx-r9
1 | |
2 | The SGI Visual Workstations (models 320 and 540) are based around |
3 | the Cobalt, Lithium, and Arsenic ASICs. The Cobalt ASIC is the |
4 | main system ASIC which interfaces the 1-4 IA32 cpus, the memory |
5 | system, and the I/O system in the Lithium ASIC. The Cobalt ASIC |
6 | also contains the 3D gfx rendering engine which renders to main |
7 | system memory -- part of which is used as the frame buffer which |
8 | is DMA'ed to a video connector using the Arsenic ASIC. A PIIX4 |
9 | chip and NS87307 are used to provide legacy device support (IDE, |
10 | serial, floppy, and parallel). |
11 | |
12 | The Visual Workstation chipset largely conforms to the PC architecture |
13 | with some notable exceptions such as interrupt handling. |