The Xscale has a 10 stage pipeline, compared to the 3 stage pipeline in an ARM7TDMI, and 5 stage pipelines in the StrongARM and ARM920T
The main problem is the much greater load result delay on the Xscale pipeline (3 cycles(?), compared to 1 cycle on the ARM920) which means that the instruction ordering needs to be significantly different to generate optimal Xscale code.
A short code segment should clarify this:
On this trivial piece of code the Xscale is 50% slower at the same clock cycle than the ARM920T. However, this effect would not make a 400MHz Xscale slower than a 206MHz StrongARM by itself.
Re:Great to hear it...
on
FreeBSD 4.6
·
· Score: 2, Informative
If you use lilo you can use lilo -R to select which kernel to boot.
My Dad has an Inspiron 8000, and I'm a bit unimpressed by it. Although it performs extremely well, and the screen is lovely, the fact that it has a 1GHz CPU and a GeForce 2Go means that the fans come on for brief periods regularly, even while browsing the web or doing other undemanding tasks. This can be quite irritating if you're trying to work with the thing. Have they fixed that with the later models?
My laptop is a 2 year old Sony Vaio N505X, which is excellent, although I don't think Sony are making such high quality laptops any more from what I've seen of them.
We've started using usemodwiki at work for doing preliminary documentation.
The real benefit of it is that it is much more fun than 'real' documentation and at least some engineers update it voluntarily. We do have official documentation processes, but it's much easier to use the wiki. In principle, documentation could be done by pointing our technical author at the wiki and letting him get to it:)
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If you use lilo you can use lilo -R to select which kernel to boot.
AMD and Intel are likely to continue battling it out for the next few years, purely so people can still run Windows.
I gave up with both SMS->Email and WAP->Email services, and now use my Sharp Zaurus to send emails using infra red to dial up to my ISP.
My Dad has an Inspiron 8000, and I'm a bit unimpressed by it. Although it performs extremely well, and the screen is lovely, the fact that it has a 1GHz CPU and a GeForce 2Go means that the fans come on for brief periods regularly, even while browsing the web or doing other undemanding tasks. This can be quite irritating if you're trying to work with the thing. Have they fixed that with the later models?
My laptop is a 2 year old Sony Vaio N505X, which is excellent, although I don't think Sony are making such high quality laptops any more from what I've seen of them.
Press Fn+Shift+Key to get Ctrl-Key. Fn-[XCV] are Ctrl-[XCV]
We've started using usemodwiki at work for doing preliminary documentation.
:)
The real benefit of it is that it is much more fun than 'real' documentation and at least some engineers update it voluntarily. We do have official documentation processes, but it's much easier to use the wiki. In principle, documentation could be done by pointing our technical author at the wiki and letting him get to it