test-drb April 2007

test-drb@ccmp.vtda.org

257 participants
560 discussions

Scanning - was Fujitsu M2442 9 track tape drive disposal.

by Billy.Pettit＠wdc.com

Glen Slick Wrote: M2441A Standalone, 100 IPS Streaming, 12.5 IPS Start/Stop M2442A Rack mount, 100 IPS Streaming, 12.5 IPS Start/Stop M2443A Standalone, 75 IPS Streaming, 25 IPS Streaming M2444A Rack mount, 75 IPS Streaming, 25 IPS Streaming M244xAC models have a 256KB buffer adapter installed. M2441A / M2443A 110 kg , 242 lb. M2442A / M2444A 90 kg, 198 lb. ------------------------------- Billy responds: I was the field service manager at Fujitsu America for 8 years (1986 on) and supported all their US customers of tape and disks (plus scanners, printers and MO devices.) While cleaning out old manuals recently, I came across a market survey we did in 1988. It includes detailed charts on every tape, and disk available at that time, plus many that were obsolete but still being used. (Included a lot of pricing data too.) It would be ideal to answer questions like this or the running thread on RLL, ST412 comparisons. I gave it to Al K. a couple of weeks ago. But he has an incredible backlog; if we help him out somehow, maybe we can get him to scan some sections of the survey. It also had some Fujitsu sales brochures, but I don't remember if I included any tape brochures. If Al doesn't have a manual you need on a Fujitsu product, let me know. I gave all my manuals to one of the engineers who worked for me. I talked to him recently, and he believes he still has them all in his garage. When I move back to the Bay area in August, I'll go through them - compare to what is on bitsavers and try to scan the delta to add to bitsavers. At this point, there is so much to be scanned that I'm reluctant to give anything to Al unless there is a demand for it. He already has backlogged years of stuff ready for scanning today. It's well past time that the rest of us interested in the hobby pitch in. This shouldn't be a one man effort. We all benefit from saving this data. Billy

18 years, 2 months

ImageDisk update

by aek＠bitsavers.org

> I was thinking the same thing with this concept of over-sampling the entire > track into a buffer If you are familiar with logic analyzers, this is the difference between state and timing modes. The CW is like timing mode, and has a high clock resolution, and is run-length encoded. Oversampling requires you to transfer a LOT of samples, which are mostly the same. Eric Smith and I built an oversampling reader about five years ago. It was impractical because of the time it took to transfer all of the samples.

18 years, 2 months

ST506

by Billy.Pettit＠wdc.com

* info wrote: ________________________________ Does anyone know of a place to get a ST506 MFM drive? I have googled but can't seem to located a new or pulled drive. I would one that is 40Meg or larger. Thanks Billy responds: I see them all the time at the flea markets. And they show up on eBay and Craig's list frequently. Wish I had known of your need. I gave one away last weekend and put a couple more in the scrap barrel on Friday. I may have a couple more at home but won't be going North for another 4 weeks. Billy

18 years, 2 months

68000 winnt

by classiccmp＠memory-alpha.org.uk

Hi, > Probably on a CHRP PPC box (Common Hardware Reference Platform).... >....The same hardware was supposed to be able to run Mac OS, OS/2, >AIX, and I think WinNT.... That's interesting, I came across mention of that architecture recently when checking out what platforms one of the free BSD variants ran on. Is there anywhere I can find out a bit more about CHRP? BTW I was a big fan of OS/2 back in the day, wonders what the chances of installing OS/2 Warp on an RS/6000 are....LMAO? TTFN - Pete.

18 years, 2 months

Mathematica for OpenStep

by rmeenaks＠olf.com

Hi, Does anyone have a copy of Mathematica for OpenStep? I want to install it on my Intel OpenStep 4.2 (via VMWare). I know I shouldn't be asking for this, but I think they don't mind as it is quite old (version 3.0) Thanks, Ram

18 years, 2 months

ImageDisk update

by fjkraan＠xs4all.nl

> No - but when I last trawled the web for info on the CW (about a year ago) I > was getting the impression that what little "officially sanctioned" > documentation and example code there was out there was squarely aimed at Windows. > At http://www.tim-mann.org/catweasel.html sources for both Dos/Windows and Linux programs are available. Of course these are mainly for reading and writing 1771/1793 FDC compatible floppies which contains most of what 765 FDC can handle. The origin of the Catweasel is reading/writing Commodore compatible floppies. > I'm not sure what work users have done with the board under DOS. I know I saw > rumour of a Linux kernel driver - but for what board revision / firmware I > don't know. It's a shame these sorts of things aren't (apparently) fed back > The drivers above are for the MK1, MK3, MK4 boards. The difference between the MK3 and MK4 is only of interest of C64 emulation; real SID or emulated SID (sound chip). Fred Jan

18 years, 2 months

ST506 WTB:Micropolis 1325

by ajp166＠bellatlantic.net

> >Subject: Re: ST506 WTB:Micropolis 1325 > From: "Andy Piercy" <andy.piercy at gmail.com> > Date: Mon, 09 Apr 2007 09:17:47 +0000 > To: ajp166 at bellatlantic.net > Cc: "General Discussion: On-Topic Posts Only" <cctech at classiccmp.org> > >Allison, All, > >I have a similar problem with two ESDI Micropolis 1355 drives both driver >exhibit the same problem as you describe > >Fault >==== >The drives power up but just seem to fail to load the heads >i.e. You know that voice coil noise when a working drive loads, well it just >does not happen on the faulty drives. The drives spins up but the drive >access light just stays on. After a while the drives re-tries to load, the >drive spins down the spins up again but still fails to load the head. > >I have two drives with this problem, however both were working but failed >after a few hours of running (Not including all the years in service ;-), >and one still intermittently still works. > >I had a quote to have the drive repaired but the UK firm wanted 380 UK >Pounds! > >So anyway sorry to ramble, After you opened the drive, did you have any >problems with dust and head crashes? Do you think that it would be possible >to fabricate one of these bumpers? Do you have any pictures of this bumper >within the drive? That is the typical symptom. spinup no head load then spindown. I plain removed the bumper. It makes a loud clack now but no ill effects. The first time I jsut put some Teflon tape over it avoid the sticky surface but it was harder to do. No pictures. I did it in a clean work area but not a clean room. Fequires small tools inside (very small area) and I demaged all my tools beforhand. The only prep I di was to clean the unit outside well (dust removeal) then clean the workarea well with a damp cloth to keep ESD and dust down. It's been years (at least 8) since I've done this and the drives are still working. Allison > > > > > >On 08/04/07, Allison <ajp166 at bellatlantic.net> wrote: >> >> > >> >Subject: Re: ST506 WTB:Micropolis 1325 >> > From: "Steven N. Hirsch" < shirsch at adelphia.net> >> > Date: Sat, 07 Apr 2007 08:42:34 -0400 (EDT) >> > To: "General Discussion: On-Topic Posts Only" <cctech at classiccmp.org >> > >> > >> >On Thu, 5 Apr 2007, Sridhar Ayengar wrote: >> > >> >> John Kourafas wrote: >> >>> Also looking for a Micropolis 1325 MFM Drive, 71/80MB , I've seen both >> the >> >>> ST506 and Mic. 1325 on eBay for like 600.00 which I think is crazy... >> >> >> >> What's the largest capacity 3.5" MFM HDD available? >> > >> >I have an extensive collection of MFM/RLL drives and have _never_ run >> >across one with that interface in a 3.5" form-factor. Not sure that >> >anything of this sort existed. 5.25" 1/2-ht. was about as sophisticated >> >as they got. >> >> I have several miniscribe 20mb in all flavors of interface st412, SCSI >> and IDE. I have some really old 3.5" WD 10mb. to name a few. >> >> They show up around the beginning of the IDE era but by time IDE hit 40mb >> they seemed to have disappeared. >> >> >> Allison >> >> >>

18 years, 2 months

bulk erase floppies for use with putr?

by dbetz＠xlisper.com

I have a Windows 98SE system setup with a 1.2mb 5.25" floppy drive for running putr to create disks to use on my PDP-11/73 system. I seem to remember someone suggesting that it was best to bulk erase the DSDD 5.25" floppies before attempting to format and use them with putr. Is that correct? I've been having trouble with putr and I'm wondering if it is due to my failure to bulk erase the floppies before using them. Also, is it necessary to start Win98SE in "DOS mode" to run putr or can putr be run from the DOS prompt from within Win98SE? Thanks, David

18 years, 2 months

RX33 (or RX50) image of XXDP?

by dbetz＠xlisper.com

Thanks to Dave McGuire and Julian Wolfe and helpful responses from many people on this list, I now have a BA23 box with the following configuration: M8190 KDJ11-B CPU M7551 MSV11-Q 4mb memory M7555 RQDX3 M8043 DLV11-J RX33 floppy (temporarily stolen from a DECmate III+) RD54 The system starts up and passes the memory test and drops me into the boot code so I think it is working correctly. I also have an Emulex ESDI controller and some ESDI drives as well as a Viking SCSI controller but I'm trying to get the system up with just the RQDX3 first. My question is, can anyone point me to an RX33 (or RX50) disk image I can use with putr to create an XXDP boot floppy for this system so that I can test and format the RD54? Thanks! David

18 years, 2 months

8-bit ISA SCSI cards?

by trixter＠oldskool.org

I'm restoring a few more 5150s and realized that, although my MFM hardware stores are being depleted, I'm just maggoty with SCSI drives, >from 40MB to 18GB. Can anyone recommend any 8-bit ISA SCSI adapters by model, name, or whatever I can use to search for them on ebay? Also, do such 8-bit adapters have an onboard BIOS? It would be great if I didn't have to boot off of a floppy disk just to access the hard drive... I have a CorelSCSI card at home, but when I plug it in it doesn't do anything at POST, and I don't have a driver or software to test the card anyway :-/ PS: If anyone knows of any sources for the ADP50 or similarly functional 8-bit ISA IDE adapters, that would be much appreciated as well. Thanks! -- Jim Leonard (trixter at oldskool.org) http://www.oldskool.org/ Help our electronic games project: http://www.mobygames.com/ Or check out some trippy MindCandy at http://www.mindcandydvd.com/ A child borne of the home computer wars: http://trixter.wordpress.com/

18 years, 2 months

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test-drb April 2007