view Documentation/sgi-visws.txt @ 854:950b9eb27661

usbback: fix urb interval value for interrupt urbs.

Signed-off-by: Noboru Iwamatsu <n_iwamatsu@jp.fujitsu.com>
author Keir Fraser <keir.fraser@citrix.com>
date Mon Apr 06 13:51:20 2009 +0100 (2009-04-06)
parents 831230e53067
line source
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).
12 The Visual Workstation chipset largely conforms to the PC architecture
13 with some notable exceptions such as interrupt handling.