Path: utzoo!censor!geac!torsqnt!news-server.csri.toronto.edu!clyde.concordia.ca!thunder.mcrcim.mcgill.edu!snorkelwacker.mit.edu!hsdndev!wuarchive!uunet!ogicse!pdxgate!eecs!berggren From: berggren@eecs.cs.pdx.edu (Eric Berggren) Newsgroups: comp.sys.ibm.pc.hardware Subject: Re: 3.5" drive for Sperry IT Message-ID: <1057@pdxgate.UUCP> Date: 6 Jan 91 07:27:48 GMT References: <1991Jan1.223725.29088@mstr.hgc.edu> <1030@pdxgate.UUCP> Sender: news@pdxgate.UUCP Lines: 43 thoger@solan.unit.no (Terje Th|gersen) writes: >In article <1030@pdxgate.UUCP> berggren@eecs.cs.pdx.edu (Eric Berggren) writes: > nmiller@mstr.hgc.edu (norman miller) writes: > >Although I know that a 3.5" drive can be added to the Sperry (I've > >seen it done), I haven't yet succeeded in finding either the drive > >or the board that works. I've tried a number of vendors, including > >CompuAdd and JDR Microdevices, all cooperative but without result. > >Does anyone out there have a suggestion? Thanks. > Hmmm, welcome aboard the sinking ship of good ole' Mitsubishi. I have > tried several times myself, with ROM ver 1.57 and the latest 1.58. So > far, the closest I've come (with the use of DRIVPARM), is the ability > to read and write 720k disks, but due to the funny strapping on the drive, > I was unable to access my other floppy drive. (sigh). There is a > particular type and brand I believe that works. I will try to get the name > and specs for you (and anyone else). Okay, here's the word: It has been said that a TEAC 135 drive will work (a 235 will also work, but you must jumper DS3). Install the drive(B), and set it up as a 360k, I am told (but I have had better luck using 1.2M), and include the following line in config.sys file: DRIVEPARM = /D:1 /F:2 /H:2 /I /S:9 /T:80 . Reboot and away you go (I am told). Again, I was trying a Toshiba FDD4216G, and the closest I got was R/W access to the drive as a true 730k, but unable to access other floppy drives probably due to funny strapping. I was handed a Pheonix BIOS set to try, but I haven't tossed them in yet to see if they would work; I'll let everyone know. Anyway, that's all I know on it. I'm going to try to invest in a 386 (AMI BIOS only, of course), and hopefully fix all kinds of problems, but it's going to be a while. good luck. -e.b. ============================================================================== Eric Berggren | "Round and round the while() loop goes; Computer Science/Eng. | Whether it stops," Turing says, berggren@eecs.cs.pdx.edu | "nobody knows."