Path: utzoo!attcan!utgpu!news-server.csri.toronto.edu!mailrus!uunet!nuchat!paul From: paul@nuchat.UUCP (Paul Hutmacher) Newsgroups: comp.sys.apple2 Subject: Re: DMA, Octoram Message-ID: <28751@nuchat.UUCP> Date: 29 Sep 90 21:14:50 GMT References: <5600@mace.cc.purdue.edu> Reply-To: paul@nuchat.UUCP (Paul Hutmacher) Followup-To: comp.sys.apple2 Organization: Greater Montrose UFO Appreciation Society Lines: 22 In article jerryk (Jerry Kindall) writes: > On the other hand, peripherals such as the > Apple II High Speed SCSI Card and the RamFAST/SCSI card KNOW that they > can't do DMA above 4 megs, so they don't even bother trying. I was worried about the same thing and called AE's Tech Support line. After war dialing for several hours I reached a technician who claimed there could be problems with GSRam+ cards populated with six megabytes of ram and the Apple DMA High Speed SCSI card due to the four megabyte limit. I also called the Apple II Techs at William's Computer Center in Spring, TX and put the same question to them and got the same results. The AE guy and the Williams tech both indicated the combination of >4 megs and a DMA SCSI card could lead to system crashes at inappropriate moments. I bought an Apricorn RamPro IIgs capable of holding only four megabytes after that. -- paul@nuchat.UUCP {uhnix1, uunet}!nuchat!paul paul%nuchat.uucp@uhnix1.uh.edu