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author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-17 02:20:36 +0400 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-17 02:20:36 +0400 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /Documentation/sgi-visws.txt | |
download | linux-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.xz |
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'Documentation/sgi-visws.txt')
-rw-r--r-- | Documentation/sgi-visws.txt | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/Documentation/sgi-visws.txt b/Documentation/sgi-visws.txt new file mode 100644 index 000000000000..7ff0811ca2ba --- /dev/null +++ b/Documentation/sgi-visws.txt @@ -0,0 +1,13 @@ + +The SGI Visual Workstations (models 320 and 540) are based around +the Cobalt, Lithium, and Arsenic ASICs. The Cobalt ASIC is the +main system ASIC which interfaces the 1-4 IA32 cpus, the memory +system, and the I/O system in the Lithium ASIC. The Cobalt ASIC +also contains the 3D gfx rendering engine which renders to main +system memory -- part of which is used as the frame buffer which +is DMA'ed to a video connector using the Arsenic ASIC. A PIIX4 +chip and NS87307 are used to provide legacy device support (IDE, +serial, floppy, and parallel). + +The Visual Workstation chipset largely conforms to the PC architecture +with some notable exceptions such as interrupt handling. |