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School of Computer Science & Engineering
University of New South Wales
Advanced Operating Systems
COMP9242 2002/S2
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Subsections
- PCs are expensive to maintain/administrate as individual machines.
- Would be cool to have the power of a big iron occasionally.
- There's still (or again?) some attraction in big central servers.
- Stateless (other than frame buffer) cheap terminals (graphic displays),
- server sends 2D bitmaps,
- connected via 100Mbps ethernet.
Supported by very simple, low-level display protocol (5 commands):
- SET: set pixes in rectangle to literal value
- BITMAP: fill rectangle with foreground, background colour
- FILL: set all pixels to fixed value
- COPY: copy rectangle
- CSCS: colour-space conversion
Benchmarked GUI apps: photoshop, netscape, framemaker, MPEG, quake
Gernot Heiser
2002-11-07
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