Messages in this thread | | | Date | Tue, 27 Jul 1999 13:42:01 -0400 | From | jerome@psti ... | Subject | Re: porting linux to DSP |
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On Tue, Jul 27, 1999 at 01:32:15AM +0000, Steve Underwood wrote: > Hello folks! > > I am thinking whether linux can be ported to a DSP chip. I would like to > know if it is possible, given that it doesn't have a cache and not a huge > amount of memory etc. If anybody thinks it is possible, can you please tell > me where to start and how to go about doing it? > > When I say linux, I don't mean linux servers; just the basic kernel with > its networking features. I am toying with this idea because a DSP chip is > considerably cheaper than the present day pentium. >
here at least 2 problems:
1. the dsp are much less mainstream than x86 so the compilers are more bugged. i maintain a os which run on a lot of cpu including dsp and have to experience some really hard-to-find bugs.
2. some dsp can't read a single byte in memory and read only words by words (eg. 24bits or 32bits). some codes assume they can read 1 single byte in a non-padded struct. for example: the network stack. the packet parser must be rewrote to support that.
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