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- Newsgroups: comp.sys.sgi
- Path: sparky!uunet!darwin.sura.net!mips!odin!fido!zola!bebop!cook
- From: cook@bebop.esd.sgi.com (Doug Cook)
- Subject: Re: Will R4K Indigo allow for user programing of the audio DSP?
- Message-ID: <nsb8a9s@zola.esd.sgi.com>
- Sender: news@zola.esd.sgi.com (Net News)
- Organization: Silicon Graphics, Inc. Mountain View, CA
- References: <1992Jul28.143535.11477@u.washington.edu>
- Date: Tue, 28 Jul 92 18:36:03 GMT
- Lines: 32
-
-
- In article <1992Jul28.143535.11477@u.washington.edu>, johnston@hertz.ee.washington.edu writes:
- > As I understand it, the Indigo's MC56001 DSP controls the audio and
- > serial I/O. However, it doesn't appear that a user application can tap that
- > resource to do their own bidding. Things that come to mind include processing
- > waveforms from test equipment, special serial protocols, audio compression.
- > Is there any plan to make this processor user programable in future machines?
- > Why not in these machines? Just curious, It would open up a number of other
- > uses for a machine like the Indigo.
-
- There are a number of reasons why we don't allow folks to directly
- program the DSP. Among these are:
- 1) The DSP may go away in future machines, and we don't want
- people to write code that we won't be supporting.
- 2) Almost all of the bandwidth of the DSP is taken up
- getting audio in and out of the machine. There really
- isn't much left that a user application could use.
-
- Really, we'd rather encourage people to write well-tuned MIPS code.
- Then you get portability both across current platforms, and to new
- machines as they come out. The development environment for MIPS
- code is also much better. Finally, the MIPS, particularly the R4K,
- is MUCH faster than the DSP for most things; this isn't like the
- original NeXT, where you needed to program the DSP because the host
- CPU was dog-slow.
-
- -Doug
-
-
- Doug Cook (cook@sgi.com) | "What IS Digital Media?
- Software Engineer, Digital Media Group | ...another name for graphics."
- Silicon Graphics, Inc. |
-