Newsgroups: alt.cd-rom,comp.sys.ibm.pc.hardware.cd-rom,comp.os.ms-windows.setup Path: cdrom.com!barrnet.net!sgiblab!swrinde!ihnp4.ucsd.edu!library.ucla.edu!news.ucdavis.edu!monet.ucdavis.edu!ez033547 From: ez033547@monet.ucdavis.edu (-- Forrest Pan --) Subject: Re: Windows crashing after adding Toshiba CD-ROM drive Message-ID: Followup-To: alt.cd-rom,comp.sys.ibm.pc.hardware.cd-rom,comp.os.ms-windows.setup Sender: usenet@ucdavis.edu (News Guru) Organization: University of California, Davis X-Newsreader: TIN [version 1.2 PL2] References: <2l7lgh$6pp@progress.progress.com> Date: Wed, 9 Mar 1994 05:18:08 GMT Lines: 30 Xref: cdrom.com alt.cd-rom:1447 comp.sys.ibm.pc.hardware.cd-rom:1637 comp.os.ms-windows.setup:1659 Kevin F. Speichts (KEVIN=F=SPEICHTS%ISSD%DFOSF@SFNET.DFO.CA) wrote: > > When I go into MS-Windows 3.1, things are OK until I try to access > > anything on the SCSI bus, CD-ROM, or hard disk. Windows crashes with > > the following error: > > System error > > Memory parity error deteced. > > System halted. > > Here are the facts: > > Compudyne 486/33 > > Adaptec 1542B > > Maxtor 7213S ( SCSI id 0 ) > > Toshiba 3401 ext ( SCSI id 1) > > ASWCDTOSH.SYS 2.1 > One thing I would do would be to switch to DOS 6.2's EMM386.EXE and make sure > you add a D=256 section to it to allow for DMA access buffers. > ex. Device=c:\dos\emm386.exe noems d=256 > As well you may want to add smartdrive.exe /doublebuffer to your config.sys > card with real DMA addresses instead of redirected addresses. Your SCSI card > may in fact be writing over windows code hense the parity errors. > ex. Device=c:\dos\smartdrv.exe /doublebuffer Hmmmmm, maybe that's too much. I will first try to restore the Toshiba to its default SCSI ID: 4. ID 0 and 1 are usually reserved for hard drive. I think the Adaptec manual did mention that. --Forrest