Xref: utzoo comp.sys.mac.hardware:5194 comp.sys.mac.misc:2992 Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!sun-barr!apple!das From: das@Apple.COM (David Shayer) Newsgroups: comp.sys.mac.hardware,comp.sys.mac.misc Subject: Re: Apple's New Direction Message-ID: <44573@apple.Apple.COM> Date: 6 Sep 90 18:04:55 GMT References: <6897.26e532e9@umiami.miami.edu> Organization: Apple Computer Inc., Cupertino, CA Lines: 13 In article <6897.26e532e9@umiami.miami.edu> gross@umiami.miami.edu (JD144) writes: >Y'see, many of the Macs performance problems comes from the fact that Apple >forces the poor CPU to do everything. The sound chip and the IIfx's DMA >chips are the only separate processors available to do asych tasks. And even >then, disk I/O will cause the sound chip to halt its execution. You can produce sound and access the disk at the same time. The Big Bang CD (which was passed out at the May developers conference) contains a sample app which does just that. But I agree with you, it is a shame that there is no OS support for the DMA chip. David #include