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Article #1143Re: DSP chips are NOT dinosaurs
From: Stephen A. Davis
Date: Thu, 01 Oct 1992 21:15
Date: Thu, 01 Oct 1992 21:15
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In article <2986@news.cerf.net> billabs@nic.cerf.net (Bill Romanowski) writes: > SGI takes a more specific approach with it's DSP. It's used only as an audio > resource for the system. No DSP coding support is provided (that I could find) > for math or serial port hacking. But the audio is clean, fast and useable up to > DAT rates. > SGI will _never_ support user programming of the DSP. Ask them and they'll tell you the same. They think all DSP-type processing should be handled by the CPU but they've made modifications to the OS to support real-time scheduling. The DSP is used as an I/O controller and runs a real-time kernel of its own to handle up to 4 channels of audio data in or out. Possible future revisions will include a faster DSP for more channels but the apparent limit at this time is not the DSP but the DMA controller. In truth, I just regret that you're stuck with only two channels on the Indigo. Sigh. stephen -- sadman@ccrma.stanford.edu The Center for Computer Research in Music and Acoustics (CCRMA) *** NeXT mail okay ***
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Newsgroups: comp.sys.next.hardware Path: arc1-ca.pugleaf.net!sparky!uunet!stanford.edu!leland.Stanford.EDU!news From: sadman@cccrma.Stanford.EDU (Stephen A. Davis) Subject: Re: DSP chips are NOT dinosaurs Message-ID: <1992Oct1.211512.29049@leland.Stanford.EDU> Sender: news@leland.Stanford.EDU (Mr News) Reply-To: sadman@ccrma.Stanford.EDU (Stephen A. Davis) Organization: DSO, Stanford University References: <2986@news.cerf.net> Date: Thu, 1 Oct 92 21:15:12 GMT Lines: 23