Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!wuarchive!zaphod.mps.ohio-state.edu!uwm.edu!psuvax1!rutgers!carssdf!usenet From: usenet@carssdf.UUCP (John Watson) Newsgroups: comp.unix.sysv386 Subject: Re: Simultaneous DMA Summary: check DMA Chip Message-ID: <297@carssdf.UUCP> Date: 8 Apr 91 22:37:06 GMT References: <2247@pdxgate.UUCP> Organization: C.A.R.S.,Middlesex,NJ Lines: 12 In article <2247@pdxgate.UUCP>, brians@eecs.cs.pdx.edu (Brian Smith) writes: > The manual for Interactive Unix states that it is possible for some DMA chips > to malfunction when more than one allocated DMA channel is used simultaneously. > My motherboard is the AMI Voyager 486-25. > Check your DMA Chip. If it is an 82C206 multifunction peripherial controller, try a different vendor if you have that problem. I have had good success with the Chips & Technology Branded version. I had spooky intermittent problems with a "second source" version (I tried 3 from that mfgr). The C&T chip worked the first time, using 486-25,AMI Bios, Tiwan Board. John Watson