test-drb

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101090 discussions

by derschjo＠msu.edu

Picked up an Otrona Attache (w/8086 option) in a trade today. Very cool little CP/M machine and I really want to get it running (hopefully it'll be easier than the ND-812 fiasco which I've shelved until I have a ton of time to do some major work on the sockets...) The Attache's power supply is non-functional. I turn it on and get absolutely nothing out of it, not even the power supply fan is spinning. I've verified the power switch is working and that the little 220/110V "card" is flipped the correct way. Anyone have power supply schematics (I have logic board schematics)? Anyone seen similar problems with this machine? Thanks! Josh

17 years, 7 months

SGI Indigo2 Hard Drive Problem (resolved)

by john_finigan＠yahoo.com

Phill hit it on the nose when he wrote, >The really important thing to remember about SGI machines is that the >contoler's SCSI ID is 0 and not the more conventional 7, this did seem >to trip up a lot of people :) Something I read had me firmly convinced that the machine defaulted to a boot drive on ID 0. On the downside, I feel sort of dumb, but on the upside, the machine sees the drive now :) Thanks a lot to Phill and Dan for helping me out. The machine makes a great boot chime, which I recorded and posted here: http://www.nuvistor.org/content/powerindigo2.mp3 John

17 years, 7 months

AST Hot Shot/286 manual/info?

by derschjo＠msu.edu

Hi all -- Picked up an AST Hot Shot/286 over the weekend thinking it'd be a way to trick out my already tricked out(*) PC XT. (Yeah, like I don't have enough other projects going at the moment...) No manuals or cabling, just the card w/10Mhz 286. It has a row of dip switches on the "front" of the card, a 40-pin connector on the top and a 40-pin socket. I assume the socket is for an 8088 (or maybe a cable >from the motherboard socket to the card?) and I'm guessing the 40-pin connector might have been for a RAM expansion. Anyone have any docs/info on this? All I can find on the 'net is a driver and a README that's about 4 lines long :). Thanks once again! Josh (*) NEC V20 CPU, 640K RAM, SVGA graphics (1MB vram!), a single 360K floppy (classic!), a 1.2gb Maxtor SCSI connected to a T128 controller, 3Com Etherlink II-TP, SoundBlaster 2, AST sixpakplus.

17 years, 7 months

SGI Indigo2 Hard Drive Problem

by john_finigan＠yahoo.com

A couple of months ago I was lucky enough to find a SGI Power Indigo2, with a R8000 CPU. Naturally it came with no HDD sled but it had a DAT drive on a sled which I figured would work. Only problem is that when I put a HDD on the DAT sled, using an 80 pin to 50 pin adapter (known good), I never see a HDD in the firmware (serial console). Googling didn't produce a lot of answers so I figured I'd ask the list. Can the DAT sled be used like this? The SCSI ID selection seems to depend, a little too cleverly, on what bay the sled is plugged into, but the sled has a small cable which is supposed to plug into ID selection pins on the drive. I have nowhere to put that. Maybe the cable needs some of its pins bridged? The drive itself is jumpered to the ID that the machine expects for a boot drive. Is a 9 GB drive too big for the firmware? I am a SGI novice, and my reading of the docs says the firmware should "just see" a correctly configured drive without entering any commands to rescan, but am I wrong about that? Thanks, John

17 years, 7 months

Almost free for the taking --- HP 2760A board

by kahrs＠caip.rutgers.edu

I have some sort of empty board for the HP 2760A card reader. If I had to guess I'd say it was for a diode ROM. Anyway, if you're interested, I'll let you have it for postage.

17 years, 7 months

RG11DV50.ISO

by dstorey＠barossafarm.com

Hi there I wonder how I can get hold of the following CD, as I would like to run RT11v5.7. Mentec seem to have been purchased and I can find nothing about PDP11's or licensing on the purchaser's web site. Are we now in an 'abandonware' phase with RT11? thanks Dominic Storey dstorey at barossafarm.com Riseley, Berkshire

17 years, 7 months

PDP 8/E OS8 Boot Floppy and Diagnostics images?

by djg＠pdp8.net

You can dump and restore RX01 and RK05 images over the console port with my dump/restore programs http://www.pdp8online.com/ftp/software/dumprest/ For diagnostic images a good collection is at http://pdp12.org/pdp-common/reference/papertapes/maindec.html Also any of the .SV or .DG files at http://www.pdp8online.com/images/index.shtml can be converted back to BIN file to load with bin loader, click on the file name and select convert to BIN loader format. Use the search to find the image with the correct file. I have some I have converted for my testing here (dhrkch, dhrkae, dhrkbg) http://www.pdp8online.com/ftp/images/paper_tape/ Writeups for the maindecs at http://www.pdp8online.com/query_docs/query.shtml The images from the online archive above plus some non os/8 that can't be displayed online are also available from http://www.pdp8online.com/ftp/images/ I think some of the OS/8 RX01's will work fine for you. Not positive which have the paper tape reader driver. You can check with resorc and either my online 8/E or simh if you want to verify before restoring an image. If your rk05's have interesting stuff not on the online images I would like to get a image.

17 years, 7 months

Downsizing My Collection

by trebor72＠execpc.com

I just had a bout with Colon Cancer and will have to start downsizing my Computer collection which goes back to the early 80's got some S-100 stuff then PC's from the first thru XT, AT, 286, 386, 486's, 586, up to PII's I also have a complete IBM Series/! 110V half rack and full rack and spare External floppy. Plus 4978, some 3101's some TI 810 printers Cabling. Everything has to go. I also have a Pair of NEC APC's that run. Got two old IMS 8000 8080 cabinets. Have some S-100 cards and 8"drives. Got a Teletek Systemaster 65K CP/m SBC that used to work. even a boot floppy and Docs. Got a Mariposa Design 64K Static Memory Board plus Manual.; Even have a Tarbell SBC 8-16 that used to run Got all the Boots and Docs Boy Am I Puter POOR. Got a N* Horizon and a ton of Cards thats up for Grabs. Got a Cromemco ZPU and a 16K static card Plus an 8K ByteSaver fully populated sans Proms. Got a ADS Promblaster wating for one chip. Found one at Unicorn but need to sell something to get the Bread to purchase Got a Advanced Digital Corp S-100 MFM Controller but not sure of its Status. Got a Tarbell FDC 1011C and a 1011D Fully populated that ought to work Got two Vector Graphic CPUs and a Z80 Got some spare Compu-Pro cards 8085, Disk1 that needs fixing, Disk3, couple RAM22.s RAM17.s Interfacer 3 and 4 that I may put up if the price is right Looking for Shipping and Handling and a few Bucks to put my pocketbook to rest. I'd go the E-Bay Route but they only allow Credit cards for PayPal and I don't have one. I am strictly "Cash on the Barrel head" which includes Money Orders My E-Mail is good if anyone is interested. I am located just NW of Milwaukee in Menomonee Falls right off of US 41-45 for PICK-UPS I will be posting Vintage Computer Market Place and Comp.os.cpm and Maybe even E-BAY Bob in Wisconsin

17 years, 7 months

OT! oBay Payments, was: RE: IMSAI 8080 on eBay

by marvin＠west.net

> From: Ian King <IanK at vulcan.com> > > More than one business has been brought down by being too greedy.... > > -----Original Message----- > From: cctalk-bounces at classiccmp.org [mailto:cctalk-bounces at classiccmp.org] On Behalf Of dwight elvey > > Well, that ends my ebay usage. > Dwight A more accurate statement is that sellers will no longer be able to ADVERTISE that they will accept checks or money orders, but sellers will still be able to accept them provided the percentage doesn't go over some amount known only to oBay. But the limitation on checks, money orders, AND cash don't apply to autos, mature audiences, and I think one other catagory. Regardless, I quit selling back in May because of the oBay/PayPal fraud protection policies in place among many other reasons.

17 years, 7 months

eBay. Was Re: IMSAI 8080 on eBay

by roger.holmes＠microspot.co.uk

> From: "bfranchuk at jetnet.ab.ca" <bfranchuk at jetnet.ab.ca> >> For what it's worth, I'll take money orders from you guys even if I >> can't >> advertise as such. >> >> > That is not the problem... Ebay's check out will be set up only to > take > pay-pal > as the only way to pay in the menu system. No, eBay will still allow cash on collection I understand. How do they know it was shipped and a cheque sent?

17 years, 7 months

Z80 home brew with FDC

by ajp166＠bellatlantic.net

> >Subject: Re: Z80 home brew with FDC > From: Eric Smith <eric at brouhaha.com> > Date: Sun, 21 Sep 2008 14:43:09 -0700 > To: General Discussion: On-Topic and Off-Topic Posts <cctalk at classiccmp.org> > >Alexis wrote: >> The other thing that puts me off is the data clock separator. How are you >> doing this? > >I can't speak for Andrew, but if you're not using an FDC with a built-in > data separator, the easiest way to do it is to use the SMC 9216, 9229, >or 9239 digital data separator chips, some or all of which were >second-sourced by Western Digital. Of course, they were obsoleted by >the newer FDCs with internal data separators. It can also be done with a small amount of ttl. Of course the 37C65 if you can find it or salvage it off an old PC floppy/ide board will be far lower parts count. Allison > >Eric

17 years, 7 months

SCSI to IDE bridges...

by james＠jdfogg.com

> There has been a lot of activity recently among the Apple > II/IIgs crowd about using the combination of a cheap SCSI > to IDE bridge and an IDE to CF adapter to use Compact > Flash memory cards in their computers. > > This apparently is working quite well and after doing some > research I've seen examples of people using this set up > to replace dead SCSI drives in vintage Macs, Suns and at > least one NeXT workstation. > > There is a vendor selling these adapters for $30 each. > The eBay item # is 350044078177. I did some digging and > the documentation can be found here: > http://dl.acard.com/manual/english/aec-7720u&uw.pdf > > I hope you folks can use this to revive some bit of rare > hardware that needed a new hard disk. :) > > I'm now looking to get one or two 8 bit ISA SCSI boards > that I can use in a couple of 5160 PC/XT machines I've > got. They need to be "bootable" cards. If you have one > or two you want to part with, please contact me off list. I'm not sure of the reasons for a long chain of conversions like that. Small 50 pin SCSI disks should still be around, and there should be a larger supply of IDE disks. Flash as a PC disk has the problem of a limited number of writes. Flash isn't forever and PC operating systems use fixed disks for things like memory swap and temp files. Am I missing something here?

17 years, 7 months

"Otrona Attache power supply woes..."

by Watzman＠neo.rr.com

Re: "For the record, the time I did it was in a DEC H754 -15V regulator brick (which is, of course, a switcher). I had it on dummy load, so I knew it wasn't really being asked to supply too much current, but there was no output. I lifted the collector lead of the current sense transistor and switched on. BAD MISTAKE!. The crowbar was firing (incorrectly, the zenner diode had failed), so there genuinely was an overcurrent situation. The result was that 4 of 5 transistors fialed (some were blown apart), the current sense resisitor burnt out (I think it actually glowed) and the fuse blew." Isn't it amazing how nasty electricity can get once you get it pissed off?

17 years, 7 months

SCSI to IDE bridges...

by aek＠bitsavers.org

> Small 50 pin SCSI disks should still be around Checked their prices lately? SCSI - IDE bridges are also drying up. > Flash isn't forever Usefulness depends on the OS. Many don't swap.

17 years, 7 months

UK: DEC RT11 8" floppies on Ebay

by mark＠wickensonline.co.uk

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Folks, Don't know much about RT11, but this looked like a nice set of disks: http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=260290011599&ssPageNam… Regards, Mark -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.9 (GNU/Linux) Comment: Using GnuPG with SUSE - http://enigmail.mozdev.org iEYEARECAAYFAkjYo/8ACgkQR0vMj/mgdjZqqQCfcVDc43E6pdaX7EnDKh3b9Bf8 Tp4An2jlcC2ioJhjJzBOcrzKvCj12Fln =rmFz -----END PGP SIGNATURE-----

17 years, 7 months

Enhancements to Ersatz-11

by jhfinedp3k＠compsys.to

This post is addressed to users of Ersatz-11. Many of you are aware that my addiction is running software for the PDP-11 architecture under the RT-11 operating system. While those of you who use RSX-11 or RSTS/E may also be interested, I am not sure how to port the PDP-11 portion of the software to a user environment under RSX-11 or RSTS/E. Specifically, explicit access to the IOPAGE Registers is required. RT-11 allows access either via the Current Data space if the user is able to run using an unmapped monitor or as a privileged job under a mapped monitor. In addition, if the user is running as a Virtual Job using VBGEXE under a mapped monitor, it is possible to use the .Poke EMT request to make the IOPAGE Registers available via the Previous Data space. If it is possible under RSX-11 or RSTS/E to meet that requirement, then the enhancements specified in this post can also be used under these two operating systems. About 5 years ago, John Wilson made available a plugin named EMEM.DLL which allowed an RT-11 user to explicitly access the memory of the PC via four IOPAGE Registers. Early in September of 2008, John made the final changes to allow EMEM32.DLL to perform the same explicit access of PC memory under V5.2 of E11. While John's version makes only 8 MB of such memory available, it is possible to use WatCom to assemble the source code and link the OBJ file with many enhancements, including any memory size that the operating system (in this case DOS or some version of Windows) and hardware on the PC supports. With the current systems being run under Windows XP, I am confident that 1 GB of memory can be used. My interest is to use an enhanced EMEM32.DLL when sieving for Prime Numbers as one example where very large work RAM will substantially improve the speed of an algorithm. The present 4 IOPAGE Registers are used in the following manner: Mov @#CSR+0,R0 ;Fetch word at address CSR+04/CSR+06 Mov @#CSR+2,R0 ;Fetch word as above, auto-increment word address Mov @#CSR+4,R0 ;Fetch low 16 bits of address Mov @#CSR+6,R0 ;Fetch high 16 bits of address Increasing the number of IOPAGE Registers will facilitate access to Byte, Word, Double Word and Quad Word values. Also included will be the ability to Add, Subtract and Multiply (initially only unsigned) 16 bit, 32 bit and 64 bit values. The other set of changes which are exclusively for RT-11 are the enhancement of the HD(X).SYS device driver. Initial tests using HD(X).SYS have provided the confidence that I/O throughput is approximately double that for the MSCP or DU(X).SYS device driver. While the initial version of HD(X).SYS which John has made available supports only 32 MB devices, adding a DU: type translation table will allow support for up to 2 TB devices. It should be possible to modify the simple device drivers for RK05s under RSX-11 and RSTS/E to support the HD: device under E11. However, I can't help with this myself. If anyone is interested, please respond with suggestions and questions. If no one responds, I will proceed to enhance HD(X).SYS and EMEM32 after which I will send any hobby user a copy if requested. If any commercial user of Ersatz-11 is interested, I will first contact John Wilson to be sure that such use is allowed. Sincerely yours, Jerome Fine

17 years, 7 months

SCSI to IDE bridges...

by james＠jdfogg.com

> > Small 50 pin SCSI disks should still be around > > Checked their prices lately? No, I haven't. I was just considering the fate of a bunch of them in my cellar this weekend. Good thing I didn't toss them. I also have a few boxes of small IDE disks. > SCSI - IDE bridges are also drying up. That's disturbing.

17 years, 7 months

Altos 8" boot disk

by Lornewknowles＠mindspring.com

One of your members (David Griffith), suggested I may be able to find (at classiccmp.org), someone who could provide me with a copy of an 8" boot disk (& diagnostics) for an Altos 8200-1. I would be more than willing to pay any costs incurred in copying/mailing the disks. Thanks, Lorne.

17 years, 7 months

Spoken for: apollo Domain Documents

by mtapley＠swri.edu

To interested folks, Spoken for (already). I'll re-post if this doesn't work out, but I think that's unlikely. -- - Mark 210-379-4635 ----------------------------------------------------------------------- Large Asteroids headed toward planets inhabited by beings that don't have technology adequate to stop them: Think of it as Evolution in Fast-Forward.

17 years, 7 months

RT 11 v5.0 floppies on ebay (UK)

by jgessling＠yahoo.com

If you are interested, see item number: 260290011599 Regards, Jim

17 years, 7 months

HP Terminal on ebay

by rborsuk＠colourfull.com

Just put my HP 2645A on ebay if anyone has an interest. http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=300260988906 Rob Rob Borsuk email: rborsuk at colourfull.com Colourfull Creations Web: http://www.colourfull.com

17 years, 7 months

updates to the Alpha Micro Phun Machine

by spectre＠floodgap.com

I finished some updates to the Alpha Micro Phun Machine, for fellow enthusiasts of Alpha Microsystems machines. There is now Kermit for download (with source), along with new model pages for the Eagle 100 and AM-1200, and custodial corrections to the links, model list and AMOS primer pages. Please let me know of any deficiencies. AMPM is hosted on a real, life Alpha Micro Eagle 300 running AMOS 2.3a and AlphaTCP. http://ampm.floodgap.com/ -- ------------------------------------ personal: http://www.cameronkaiser.com/ -- Cameron Kaiser * Floodgap Systems * www.floodgap.com * ckaiser at floodgap.com -- "Another day, another dangling modifier" -----------------------------------

17 years, 7 months

Z80 home brew with FDC

by ajp166＠bellatlantic.net

> >Subject: Re: Z80 home brew with FDC > From: Eric Smith <eric at brouhaha.com> > Date: Sun, 21 Sep 2008 18:02:25 -0700 > To: General Discussion: On-Topic and Off-Topic Posts <cctalk at classiccmp.org> > >Alexis wrote: >> The FDC-1 uses a FD179x controller and it appears it uses the same >> data clock and raw data inputs as the 765. > >Not quite. I don't recall the details of the difference, but I think it >may have just been the polarity of one of the signals. The 9229 and >9239 had a configuration input to select between 179x and 765 modes. >The 9216 would directly connect to one, and needed a small amount of >logic (maybe just an inverter) for the other. > >> The decoder is made up of a 74LS197 (clock divider), a dual 74LS74 flip-flop, >> both used, a 74LS163 counter and an inverter. There are also some open >> collector NAND gates to select the clock rate for either 8" or 5.25" drives. >> It'll use more individual IC packages, but they're *much* easier to find. > >Sure, but it doesn't sound like it's a very good data separator. The >good ones have a PLL (either analog or digital), because it is necessary >to track speed variations, not just of the drive that you're using to >read a disk, but also of the drive that wrote it. Non-PLL data >separators work OK when the disk is both written and read under optimal >conditions, but are unreliable otherwise. > Actually it's pretty decent. However as you point out if you really need the ultimate in relaibility and are throwing crap media with loose drives in the system then a PLL may help somewhat. >The 9216, 9229 or 9239 are *highly* recommended, as they have a good >digital data separator. The 9229 and 9239 also contain write precomp >logic. The 9239 uses higher resolution timing for its PLL, so it may >perform better. yep, now just fine one. Me I gave up on floppies as even at 1.44Mb they are slow and small. IDE of CF offer more space and less interface headches. Allison

17 years, 7 months

need manuals (and additional 'wares) for THE CANON AS-100

by chrism3667＠yahoo.com

Yes finally made the ride up to Lake George, NY. It was a lot more painless then I suspected. The thing could have EASILY been shipped though, I don't know what this guy's problem was. Regardless though, it's in nice shape, is COLOR, and includes the 8" floppy box. No manuals. Some software on 5 1/4" and 8" disks (some of these disks may be 160k's though - hope ID can handle them <think so>). Haven't looked at any of that yet. There is a site out there (German I think) that has a good assortment of s/w, but no FORTRAN or COBOL I don't think. Anyhoo, need manuals and whatever other intangibles I can get my hands on. Digital camera repro's are fine (they're nice and quick). The guy was of the persuasion that this thing had 32k of ram. I said no way. And I was right - it has 512k. So being some of his information is of dubious value, I need to ask whether anyone can confirm or deny that this thing was available in Japan before the 5150 was. My guess is no. Was cp/m-86 available before the Peecee came out?

17 years, 7 months

need manuals (and additional 'wares) for THE CANON AS-100

by hpjimbondoris123＠dorisland.net

C/PM86 Was available a good friend ported Microsoft Quick C to the as100. The manuals are nothing special mostly dos programming stuff. Jim

17 years, 7 months

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