test-drb

test-drb@ccmp.vtda.org

101090 discussions

by chrism3667＠yahoo.com

now ain't that subject line an attention grabber. Not exactly what you'd call a Mac related topic...at least not so much to me. But simply an opportunity to appreciate a particularly rare, exceedingly beautific (arty?) piece of vintage crappola. I posted this in the Tandy 2000 Yahoo group a few hours ago and thought I'd share it with the remainder of my faithful followers on this list. Yes your gratitude is well received. You can view the subject of the thread here: http://groups.yahoo.com/group/Tandy2000/ you don't have to join, but what would be the reason not to??? my gosh it's soo beautiful *snifful* I can barely stand it ... I'm referring to the picture of the Xerox 16/8 I placed on the front page. I challenge ANYONE to find a more luxurious looking vintij puter.In reality, that box isn't the "puter" at all, but the drive expansion unit. The computer logic is embedded in the monitor - the Xerox 16/8 proper. It has an 8086 and a Z80 for the best of those worlds (but no it's not peecee compatible, but that sure done didn't make a difference back in them days. Nuh uh. We all bought puters like it, and lived to tell the tale...). My particular 16/8 is in exceptionally good shape, but I believe the hard drive is bad. When I had learned of it's existence I guess 2 years ago (that guy in N.Carolina, uh vintagemicros? had one up for bidding, w/the caption "Insanely Great!", no doubt trying to cast it as a Macintosh predecessor (cpu and crt integral sparky)), I did a search, and found a guy w/one in Maryland. The origins of the Mac are not estranged from Xerox corp. I guess, but the resemblance between a Mac and the 16/8 is somewhat hard to define other than what I pointed out. I rather suggest the caption should have read "Insanely Stoopit!" LOL LOL LOL LOL LOL A thoroughly beautific piece of vintage garbage though wouldn't you say? ____________________________________________________________________________________ Food fight? Enjoy some healthy debate in the Yahoo! Answers Food & Drink Q&A. http://answers.yahoo.com/dir/?link=list&sid=396545367

19 years, 2 months

ImageDisk update

by dave06a＠dunfield.com

I just discovered a flaw in my DMA setup sequence which exposes a timing window during which bus noise can cause false dma events (DMA enabled but FDC not driving it yet), leading to ImageDisk not working correctly in some PCs. I have corrected this (with the help of a couple of very knowlegeable list members - thanks guys!), and released an updated ImageDisk 1.16 with the fix. I have also updated the source code archive to include the new TESTFDC and .TD0 conversion utilities. Enjoy, Dave PS: I found this while fooling with and old 486 because I finally decided to see if I could get my Central Point DEluxe Options Board working - the TRANSCOPY that I had for it wouldn't run at all (froze during the analyze phase), but I downloaded one from the net which does, but I have been unsuccessful in actually recording and recreating a plain-jane DOS DD 360k disk - I've gotten it to complete the motions a couple of times but the result has errors in it. This is a 486/25 (slowest I could make it) - does anyone know if the CTP board will work reliably, or do I need to go slower... Any other common causes of problems...? Dave -- dave06a (at) Dave Dunfield dunfield (dot) Firmware development services & tools: www.dunfield.com com Collector of vintage computing equipment: http://www.classiccmp.org/dunfield/index.html

19 years, 2 months

*nix on "classic" systems

by ken＠seefried.com

> And what modern *nix ports, if any, do other list members use on > their classic iron? I ran it on my VS3100, Alpha PC64-275, various MIPS & ARM gear, Sun 3 & SS20, MVME 680[346]0, VME PPC, and Xen & x86 (not classic). I still have 1.5 on a PC532 and run current on Xen & x86, having gotten rid of everything else (well...the VME stuff is in storage pending a decision on keeping it).

19 years, 2 months

*nix on "classic" systems

by ken＠seefried.com

From: Sridhar Ayengar <ploopster at gmail.com> > Where did you manage to dig up a PC532? Or did you build it yourself? I purchased the original kit from Dave & George. However, this one isn't it. My original, partially built kit got accidentally tossed in a breakup something like 15 years ago. There was wailing and gnashing of teeth. A couple of years ago, I mentioned that I was interested in ns32000 gear and got an email to the effect "I've got some of that, make me an offer". A bit of cash later I had the PC532, an ICM3216, a custom built ns32332 unit and a Heurikon VME532, along with some doco and a bunch of extra parts. Pretty decent haul. Ken

19 years, 2 months

68000 winnt

by aek＠bitsavers.org

> and what about the 68000 version of Windoze NT? Not possible. NT required a little-endian processor. A PPC version existed. The processor was in little-endian mode to run it.

19 years, 2 months

TU56/TC11 configuration

by wacarder＠earthlink.net

>Henk wrote: >I still want to get my TC11-TU56 online, but my 11/84 is >giving problems with the RL02 drives. Need to fix that first. Is your 11/35 still alive and well? I thought you had the TU56 hooked up to your 11/35 in that massive chain of H960 racks. I recently acquired an 11/35 in a rack with an RK05J and an RK05F. It has some life in it, but is not behaving correctly. Some bits seem to get stuck when I run tests depositing and examining memory. I am in the process of validating some of my spare 11/40 CPU modules. Hopefully I have enough good spares to get the 11/35 up and running. Ashley

19 years, 2 months

Some progress with my PDP-11/73 system

by ajp166＠bellatlantic.net

> >Subject: Re: Some progress with my PDP-11/73 system > From: David Betz <dbetz at xlisper.com> > Date: Tue, 10 Apr 2007 08:17:49 -0400 > To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org> > >> RD53s are notoriously unreliable, but I'm surprised that four out >> of five simply aren't detected. Are they genuine DEC RD53s? You >> need to add a PCB link to an ordinary Micropolis 1325 or 1335 drive >> to make it an RD53. Look on the PCB for the location marked R7 >> (remove two screws and carefully hinge it up) -- if there's nothing >> there, solder a link in that position. Oh, and don't use a skid >> plate with bare metal with an RD53, as it can short things out. > >Three of the four failing drives were official DEC RD53 drives as >indicated by a sticker on the top. Interestingly, when Iooked at R7 >on the PCB, two of them had the resistor present but one end had been >cut. I soldered it back together but both drives still fail. At least >one of the drives spins up but then back down again. I'm reluctant to >try swapping the PCB between my only working drive and one of the bad >ones so I think I'll just count them as a loss. The one that pinsup and then spins down has the head bumper sticking problem. That is repairable and likely the HDA and logic is good. Me I'd repair that drive and use it. Allison

19 years, 2 months

TU56/TC11 configuration

by wacarder＠earthlink.net

>Henk wrote: >I still want to get my TC11-TU56 online, but my 11/84 is >giving problems with the RL02 drives. Need to fix that first. > >Is the H720 the power supply inside the TU56 chassis? >ISTR that you need an external power supply, +5 or +15 comes >to mind, and there are two voltages possible, but only one >must be connected ... I could be totally wrong. > >The first thing I must do is a check if all FlipChips in the >TC11 are at their correct position, and if all are present...! > >Following this thread with argus eyes :-) > The H720 is a separate power supply and is not part of the TU56 chassis. It has (IIRC) spade connectors to run the various voltages to the TU56/TC11. I have hooked up the TU56 to the H720 to test it out in standalone mode. If I am able to escape from "she-who-must-be-obeyed" tonight, I plan to make some progress on this project. I'll keep you posted! Ashley

19 years, 2 months

Some progress with my PDP-11/73 system

by dbetz＠xlisper.com

I've made some progress on getting my PDP-11/73 system up and running. I have successfully created an RX50 XXDP boot floppy and have booted XXDP. My next step was to try to format the RD54 hard drive. I did this by running the ZRQCH0 (where does this name come >from anyway!) utility on the XXDP disk. I took all of the defaults and got the following failure. Does this indicate that my RQDX3 controller is bad or is this likely to indicate a bad hard drive? .R ZRQCH0 ZRQCH0.BIN DRSSM-G2 ZRQC-H-0 RQDX3 Disk Formatter Utility UNIT IS Formattable Winchester (RDnn) or Floppy (RX33) Drives RSTRT ADR 145702 DR>START CHANGE HW (L) ? Y # UNITS (D) ? 1 UNIT 0 Enter controller IP Address (O) 172150 ? What unit do you want to format [0-255] (D) 0 ? Would you like to revector a single LBN only [Y/N] (L) N ? Do you want to use the "AUTOFORMAT" Mode [Y/N] (L) Y ? Enter unit serial number [1-32000] (D) 12345 ? **** WARNING **** ALL DATA ON SELECTED DRIVE WILL BE DESTROYED Write protect all drives not being formatted. Please verify that the selected drive is ON LINE and NOT write protected. If formatting RX33 media, insert media to be formatted in the selected drive. Do you wish to continue [Y/N] (L) Y ? ZRQC SYS FTL ERR 00013 ON UNIT 00 TST 001 SUB 000 PC: 105742 Autosizer Failed. Status: Controller Chip Never Interrupted. ZRQC SYS FTL ERR 00006 ON UNIT 00 TST 001 SUB 002 PC: 105742 Fatal Controller Error During Initialization. ZRQC EOP 1 2 TOTAL ERRS DR>

19 years, 2 months

TU56/TC11 configuration

by wacarder＠earthlink.net

>> Is this the correct way to add the TC11 to my current setup and properly >> terminate the Unibus by moving the M9312 to the TC11? > >Yes, that's the correct way, although I have the M9312 in the CPU box >(11/34) and a M9302 as the "outside" bus terminator. I think I'll try to get my TC11, TU56, and H720 mounted in the rack tonight, move the M9312, fire it up, and see what happens. It would be nice to see those little DecTapes spinning based on the commands I am typing on a terminal! >Well, we have a 11/34 with TM11/TU10,RK11D/RK05,RL01,RL02,RA80,PC11/PC05 >and since at least two years TC11/TU56, everything is in working >condition. I might be checking with you again later. I also have a TU10 and a PC05 that I want to hook up to my system. The TU10 needs to be reassembled (it was dismantled when it was shipped), and the PC05 needs a good cleaning. >> I also have a TU55 (single unit) DecTape drive. Are the TU55 drives >> compatible with the TC11? Can a TU55 drive be added to the above >> configuration and be configured as a 3rd DecTape drive? Or are the TU55 >> drives not compatible with the TC11? I have skimmed the TC11 manuals >> and did not see mention of the older TU55 drives. > >I don't know, do you really mean TU55 (the old DECtape)? I ask because >there was a single drive TU56 called TU56H (H for "half"). This is an actual TU55 that I'm referring to, not the single drive version of the TU56. Ashley

19 years, 2 months

cctalk Digest, Vol 44, Issue 21

by hamren＠sdu.se

Hello, Kevin I plan to travel to England by car, arriving next friday, April 21, and to visit BP that weekend, to pick up the Teletype. You have an Alpha-16, that you indicated I would be able to borrow. Would you consider donating it? If not, is borrowing still OK? Will it be possible to go through your storage areas, to see what other CA equipment you may have? Last time we were unable to do that, because you did not have the key. I have not yet made definite plans for the weekend. Will both days be convenient, or is one of the days out of the question? Kind regards /Lars Hamr?n ------------------------------------------------------------------- Lars Hamr?n Tel...: +46( 46)189090 Svensk Datorutveckling Mobile: +46(705)189090 Vadm?llan 211 e-mail: hamren at sdu.se S-225 94 Lund WWW...: www.sdu.se Sweden

19 years, 2 months

DEC/VG Datasystem/System Industries/Western Dynex

by jwest＠ezwind.net

Found something rather oddish (for this place) at one of my usual junk hunting grounds. Thought I'd post about it here and see if anyone had any interest. More importantly, I was wondering if people might be able to fill in background on what this system probably contained. DEC H960 Rack with 861C power controller, both side panels present. Back door present, but 8x10 hole cut in back. There is a DEC header panel at the top which is shiny silver on the front with the text "VG DataSystem 2000" screened on it. There is a chassistrak railset, looks like one would use for an RX02 but it's inner rails only. The 861 power cable was cut on the plug end. There was also the condor fan and cabling. This rack had a 1/2 height dec filler panel and I snagged that myself, along with the two (and only two) filler panel stud mounts. At the back of the rack was some custom interconnect stuff, obviously used to connect the machine to the outside world. There was a rackmount box (removed from rack but available). I believe it to be a disk controller of some sort. It had a tag on it saying "RKA1-3, RKB1-3, SYS & DSK?" {the DSK was fuzzy, may not have that right). On the rear is a 2 position toggle switch marked "NORMAL" and "FORMAT". The front of the unit said System Industries, and on the back it said "Model 3040-3051". From the back of this box were about 4 or so long ribbon cables that I was told went to the disk drives (can't verify this for sure). Lastly there were two identical disk drives, obviously Western Dynex drives even though they had "System Industries" on the front. I remember them from microdata days. They were labled XDD-6222-TA45F, 2400RPM, 200TPI. Each drive had a piece of removable media the media was visually the same as RL02 media >from the top. One said "scratch disk, all data here will be lost". The other had a lable that read "VG 2035 F/B Release 7.3 bootable". "UCC system before converting to rel 8 in Jul 82". Both drives include mounting rails. One drive appears to have had the fan on the rear removed. The drives appear to be in fair condition, but probably are just good for parts. If anyone is really interested in any of it, let me know and I'll put you in touch with the shop. I may be interested in the dynex drives if they could be used on my Microdata. If no one takes the rack I may see if he'll sell me just the condor fan. I'm curious if anyone knows about VG datasystem 2000 or System Industries. Jay West

19 years, 2 months

TU56/TC11 configuration

by wacarder＠earthlink.net

I am getting ready to hook up a TU56 and TC11 to a PDP-11/40 system. I was curious if anyone else here on this list has a working TC11. My TU56 seems to work fine in standalone mode (not connected to the TC11), connected to an H720 Power supply. The capacitors are not leaky and seem to be working fine, although I know I should re-form them or replace them at some point. All voltages are correct coming from the H720. The toggle switches and lights on the TU56 are all working properly and will run a loaded Dectape in forward or reverse. My current 11/40 configuration has the full 11/40 CPU with all optional modules (EIS, MMU, FIS, M7237, M787), 128KW M7891 MOS memory, RL11 controller, RX01 controller, M7819 EIA DZ11, M7814 20mA DZ11, and an RK11 controller. I currently have an RL01, two RL02s, and a couple of RK05s, and an RX01, and they are all functional. In the last "Unibus Out" slot (which happens to be on the RK11 controller), I have an M9312 bootstrap terminator card. I have various working terminals (VT05, VT52, VT100, LA36, LA120, ASR33) connected via the EIA and 20mA DZ11s. This system works properly and I have used it to boot and run my custom configured RSTS/E V7 system, as well as RT11 and XXDP. Can anyone with a working TC11 verify that the following will work: I will remove the M9312 from the RK11 and replace it with a BC11-A Unibus cable, which will connect to the Unibus-In slot on the TC11. In the Unibus Out slot of the TC11, I will place the M9312 bootstrap terminator card. The TC11 will be connected to the TU56 with the M908 and W032 cables. Is this the correct way to add the TC11 to my current setup and properly terminate the Unibus by moving the M9312 to the TC11? Does anyone else out there have a working TC11/TU56 on a PDP-11? I am aware of numerous working TU56 / PDP-8 systems, but don't know of anyone who has a TU56 working on a PDP-11. I know people who have them sitting in a rack for "show and tell", but not connected and running. I also have a TU55 (single unit) DecTape drive. Are the TU55 drives compatible with the TC11? Can a TU55 drive be added to the above configuration and be configured as a 3rd DecTape drive? Or are the TU55 drives not compatible with the TC11? I have skimmed the TC11 manuals and did not see mention of the older TU55 drives. Thanks in advance for any advice! Ashley Carder http://www.woffordwitch.com

19 years, 2 months

SuperCartridge 3: Pre-scrap...

by kyrrin＠bluefeathertech.com

Fellow techies, I have a SuperCartridge 3 font module, as used with the old HP LaserJet 3 printers. Before I remove and erase its EPROMs for recycling/re-use, does anyone have need of the module itself or the data in the EPROMs? If I don't hear back by, oh... Thursday or so, I'll assume not. Thanks much. -=-=-=-=-=-=-=-=-=-=-=- Bruce Lane, Owner & Head Hardware Heavy, Blue Feather Technologies -- http://www.bluefeathertech.com kyrrin (at) bluefeathertech do/t c=o=m "If Salvador Dali had owned a computer, would it have been equipped with surreal ports?"

19 years, 2 months

Buzzing 861C - anyone ever open one up?

by ajp166＠bellatlantic.net

> >Subject: Re: Buzzing 861C - anyone ever open one up? > From: ard at p850ug1.demon.co.uk (Tony Duell) > Date: Mon, 09 Apr 2007 19:26:53 +0100 (BST) > To: cctalk at classiccmp.org > >> >> >> "Jay West" wrote: >> ... >> >DEC H960 Rack with 861C power controller >> ... >> >> Which reminds me. I plugged in an 861C yesterday. The breaker seemed a >> bit "dodgie" as they say, and didn't seem to want to stay on. I finally > >They normally ared a bit tricky to get to latch on. I have three of them here and I've never had a "dodgy" breaker, they latch quite firmly. > >> got it to stay on but when I plugged it in I got a loud buzzing sound >> from inside the "box". The switch was set to "local". >> >> There was nothing else plugged in and the breaker didn't pop but I didn't >> like the sound and unplugged it. I've never opened an 861C up - what's > >Well, you have one. Do you own a screwdriver :-) > >Seriously they come apart very easily (just a few screws holding the >cover on). Obviously unplug it ffrom the mains before you start, but >there's no serieosu stored charge inside (there are mains filter >capacitors, but they're quite small). > >> inside? I would have thought it was just A/C distribution but I guess >> there must be a relay come to think of it. > >I can't remember which the -C version is (there are at least 5 models, >115V and 230V, single and 3 phase inputs, etc). > >The bnsic design is much the same for all of them. There's a breaker and >mains filter, the output of that goes to the unswitched sockets, and also >to a contactor (big relay). The output of the contactor goes to the >swtiched sockets. > >There's a little control PCB inside as well. IIRC in the 861 it contains >an unregulated supply and a reed relay with 2 coil windings, and some >diodes. > >As you may know, the 3 pin mate-n-lock ocnnectors on the power >controllers allow you to link up several such controllers so that turning >on the CPU consople switch also turns on every other part of the system. >The 3 pins on those conenctors are ground, ground-for-on, and >ground-for-off, with the last taking priority. The sonsole switch is >wirted between ground and ground-for-on, any overheating-detection themal >swtiches are wired between ground and ground-for-off. That way, if any >part of the system overheats, the whole lot gets turned off. > >IIRC, the reed relay has a differentially-wound coil. Grounding the >ground-for-on line turns the relay on. Grounding the ground-fo-off line, >if the ground-for-on line is also grounded, will cause both windings to >be energinsed, the magnetic fields cancel, and the reed relay turns off. > >The contacts of the reed relay cotnrol the contactor. This is a problem >in 230V models, the reed relay is really only rated for 115V, and tends >to suffer from contact welding when used to switch the 230V contactor >coil. I've had to thump my 861 to get it to turn off. > >Anyway, the contactor does buzz a bit anyway. if you're getting mains at >the swithced outltes, it should be fine (if you don't get mains there, >the contactor may not be pulling in properly. In that case it'll buzz >like mad, and will also burn out fairly quickly.). > >A fault on the cotnrol buard is unlikely to cause buxxing. The control >elemenets, the reed relay and the contactor, are too slow to repsond at >60Hz. So even if there's ripple on the cotnrol board supply, it doesn't >normally cause the thing to buzz. The buss is nothing bad. Usually it's just the contactor mechanically buzzing I have only one that does that and either cycling it or giving it a sound rap (purcusive maintenace) makes it quiet down. Allison

19 years, 2 months

Some progress with my PDP-11/73 system

by ajp166＠bellatlantic.net

> >Subject: Re: Some progress with my PDP-11/73 system > From: David Betz <dbetz at xlisper.com> > Date: Mon, 09 Apr 2007 15:44:04 -0400 > To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org> > >>> utility on the XXDP disk. I took all of the defaults and got the >>> following failure. Does this indicate that my RQDX3 controller is >>> bad or is this likely to indicate a bad hard drive? >> >> Since the controller handles the RX50 OK, almost all of it must be >> working. If the LED on the RQDX3 goes out a few seconds after >> resetting, with the RD54 disconnected, the RQDX3 has passed its >> self-test. From the error, I'd say possibly the RD54 has never >> been formatted on an RQDX3, or more likely something is wrong with >> the jumpers or connections. >> >> Double check that the drive select jumper is correct (normally it >> should be DS3; does the drive's LED flash when you run ZRQC?), that >> the little control board in the front of your BA23/BA123 with the >> READY and WRT PROT buttons is properly connected and those switches >> are set correctly, and that the cables from the distribution panel >> are connected correctly (with both the RD54 cables connected to the >> lower-numbered port). It's just possible you have too old a >> version of the firmware on the RQDX3 (what are the EPROM numbers?) >> or that its jumpers (eg W23) are set wrongly, but this is less >> likely I think. > >You were right about needing to switch drive select to 3. That made >it possible to format the RD54 drive. It formatted successfully with >40 bad LBNs and 7 retired. I also tried formatting my five RD53s and >one formatted successfully with 27 bad LBNs. The other four failed to >even be detected as far as I can tell. Is there any point in playing >with these or would I be better off just trashing them? I'd explore swapping boards or rechecking jumpers first, the try ZRQC? again. RD53s tend to have spindown disorder, spin up then spindown. If they do that generally there is a fix. If they spin up and you can hear the head mech load then something else likely on the boards is bad or wrong. >Also, how bad are 27-40 bad LBNs? I know that they can be mapped out >but is this a sign that the drive is dying? Thats common for MFM drives and the OS or controller will manage it usually. However, if you see an increasing number of bad LBNs or they are all on one head that can be an indicator of impending failure. Allison

19 years, 2 months

9 track drive wanted

by davebarnes＠adelphia.net

Anyone have a 9 track SCSI (preferred) or pertect interface tape drive in the Western NY area they want to part with? thanks David Barnes davebarnes AT adelphia DOT net OpenVMS , Tru64 , Solaris , Linux , OS X , SGI Irix

19 years, 2 months

TU56 Rack Mounting question

by wacarder＠earthlink.net

Another question.... Does a TU56 normally have rack-mount rails? I have two TU56 drives and neither of them have rails. How are these typically mounted?

19 years, 2 months

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

19 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.

19 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

19 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.

19 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

19 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

19 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 >> >> >>

19 years, 2 months

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