Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!zaphod.mps.ohio-state.edu!mips!spool.mu.edu!munnari.oz.au!metro!usage.csd.unsw.oz.au!sphinx!pta!yarra!bohra.cpg.oz.au!als From: als@bohra.cpg.oz.au (Anthony Shipman) Newsgroups: comp.periphs.scsi Subject: Re: Maxtor, Wangtek & WD FASST 7000 problem Summary: works for me Message-ID: <1991Apr18.020832.19028@bohra.cpg.oz.au> Date: 18 Apr 91 02:08:32 GMT References: <1991Apr12.150258.26918@qut.edu.au> <6639@gssc.UUCP> Organization: Software Division, Computer Power Group Lines: 35 In article <6639@gssc.UUCP>, bradd@gssc.UUCP (Brad Davis) writes: > In article <1991Apr12.150258.26918@qut.edu.au> lemon@qut.edu.au writes: > >The problem is that when a tape is placed in the tape unit the hard drive > >makes chlunking sounds(well the same sounds it makes at power up, a reset?) > >and also after reading a number of blocks from the tape unit the hard drive > >does the same thing, which results in the software hanging. It also hangs > >when trying to write to the tape unit, the hard drive make the same sounds. > > >Has anyone any idea as to what may be wrong ? > > >PS : the SST software reports the correct ID's for the drive's. setup is on > >a 386 20Mhz, AMI bios. CHIPS chipset. > > This sounds something like a problem I'm having with an Adaptec 1540 > and SCSI tape drives. After a little experimentation, I found that it > worked fine on Compaqs and failed in the same way (hanging on reads) on > three out of three Chips & Technologies motherboards. My motherboard is 20MHz 386, (old)AMI BIOS, C&T chipset. I use an AHA1542B and Archive 2150S (+Maxtor 4380S) and it all works very well. > > I believe the problem in my case, and possibly yours, is a bug in the > C&T chipset's DMA circuitry that shorts a couple of address lines together > at a crucial time. C&T supposedly issued an errata sheet with work arounds, > but apparently all the motherboard OEMs ignored it. My motherboard is Taiwanese, some people called "Sure". Perhaps they got it right? -- Anthony Shipman "You've got to be taught before it's too late, Computer Power Group Before you are six or seven or eight, 19 Cato St., East Hawthorn, To hate all the people your relatives hate, Melbourne, Australia You've got to be carefully taught." R&H