- test-drb@ccmp.vtda.org - classiccmp.org

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, 11 months

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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, 11 months

1
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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, 11 months

6
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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, 11 months

3
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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, 11 months

1
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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, 11 months

2
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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, 11 months

26
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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, 11 months

2
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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, 11 months

1
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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, 11 months

3
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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, 11 months

7
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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, 11 months

3
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"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, 11 months

1
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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, 11 months

5
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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, 11 months

2
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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, 11 months

1
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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, 11 months

1
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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, 11 months

1
0
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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, 11 months

2
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RT 11 v5.0 floppies on ebay (UK)

by jgessling＠yahoo.com

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

17 years, 11 months

1
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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, 11 months

1
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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, 11 months

1
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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, 11 months

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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, 11 months

2
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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, 11 months

2
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Teac FD-235J 2.88 MB SCSI floppy drive

by brain＠jbrain.com

I need one for a CMD FD repair, and the only source I can find wants $235.00 for it. Anyone know or another source or a compatible unit? Jim -- Jim Brain, Brain Innovations (X) brain at jbrain.com Dabbling in WWW, Embedded Systems, Old CBM computers, and Good Times! Home: http://www.jbrain.com

17 years, 11 months

3
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apollo Domain Documents

by mtapley＠swri.edu

To interested folks, A pile of apollo Domain documentation to give away. The computer itself is "long gone", sorry. For pickup or packing/shipping * 1.2 or so, from San Antonio, TX (78254). --------- Wire-bound small handbooks: Unpacking and Installing your DN3000/DN4000 Personal Workstation and the DSP3000/DSP4000 Server (bound backwards, interestingly) Installing Domain Software Installing Domain/PCC in your DN3000 Workstation Using Domain/PCC for PC compatibility --------- 3-ring binders or inserts: Operating the DN3000/DN4000 Personal Workstation and the DSP3000/DSP4000 Server Domain/IX Text Processing Guide Domain Series 3000/Series 4000 Technical Reference Administering your DOMAIN System DOMAIN System Utilities DOMAIN Language Level Debugger Reference Configuring and Managing TCP/IP DOMAIN Graphics Primitive Resource Call Reference Programming with DOMAIN Graphics Primitives Administrator's Reference for DOMAIN/IX BSD4.2 DOMAIN/IX Programmer's Reference for BSD 4.2 DOMAIN/IX User's Guide DOMAIN System Command Reference DOMAIN Binder and Librarian Reference DOMAIN System Command Reference --------- Stapled paper documents: USing Domain/PCI for Interprocess Communication Domain/PC Coprocessor Software Release Document Using PC and AT Peripheral Boards with Domain/PCC --------- 2 * DC300A Data Cartridges, contents unknown. -- - 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, 11 months

1
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Single buffered Ethernet adapters Was: OS/2 Warp, was Re: PCjr Telnet Server

by dave＠mitton.com

On 9/18/2008 01:04 PM, cctech-request at classiccmp.org wrote: >Date: Wed, 17 Sep 2008 11:21:02 -0400 >From: Paul Koning <Paul_Koning at Dell.com> >Subject: Re: OS/2 Warp, was Re: PCjr Telnet Server Test - Done! >To: cctalk at classiccmp.org >Message-ID: <18641.8286.275784.301355 at gargle.gargle.HOWL> >Content-Type: text/plain; charset=us-ascii > > >>>>> "Ethan" == Ethan Dicks <ethan.dicks at usap.gov> writes: > > Ethan> Back when NIC weren't $10 each, I remember the easiest to work > Ethan> with (in terms of compatibility) were the NE2000 and clones > Ethan> (NE1000 for 8-bit machines), the WD (later SMC) 8013, and the > Ethan> 3C501, later displaced by the 3C509. ... > >Something to keep in mind is that the 3C501 is an extremely bad >design. It is completely incapable of dealing with back to back >packets -- even just two of them. And of course that's a perfectly >normal situation in any plausible network. > >I remember working on DECnet when these toys came around, and the >request came in to have a "go slow" feature in DECnet to support this >single buffered design. The answer, of course, was "NFW". (Slowing >down at the source wouldn't have helped because the network could >easily cause clumping anyway...) > > paul The problem with the 3C501 (and the InterLAN and Ungermann-Bass, and other I've forgotten about) Ethernet cards of this era where that they only had one packet of memory on them. Once a packet was received, you had to wait until software retrieved the packet and re-enabled the card, before you could get the next. Likewise if you wanted to transmit - you had to disable reception, copy the transmit packet into the card, and then send it. In PCs of that era that was a substantial chunk of time relative to the potential arrival rate of 10Mbs Ethernet. I have a presentation I have given at DECUS, where I analyzed (on paper) what the likely best possible rates for an XT or PC-AT would be. I should scan that in. (highly unlikely I have a machine readably copy! wonder what I prepped that in?) NetWare and NetBEUI driven networks hardly noticed this problem for two reasons: 1) they were Request/Response protocols. They normally did not expect additional packets until they responded, and 2) they were talking to other PCs. Which simply couldn't generate traffic fast enough. With respect to DECnet, the problem came up quickly when we started having PCs make requests from PDP-11 or VAX file servers, using either FAL or the PathWorks server. When pushing data the mini computer could quickly over run the slow PC with a dumb Ethernet card. The rest of the world noticed when TCP/IP implementations got good enough to encounter similar problems with FTP pulls, and PC file servers finally got enough aggregate clients. The workaround in DECnet-DOS was a careful tuning of the buffer pool, and the transport (NSP) credit flow control window algorithms. The delayed-ack mechanism was optionally tweaked to send an ACK immediately upon receiving a packet ahead of the expected next. This typically indicated a lost packet, and usually generated an immediate retransmit. The VAXmate and PCs using the DEPCA card would run rings around these other cards. Because they used the AMD LANCE Ethernet chip with multiple packet buffers in a mapped memory buffer. The DECnet-DOS kernel optimized this by using it directly for it's buffer pool and removing the need for another memory to memory packet copy. With all due respect Paul, I've never asked another DECnet implementation to "slow down", certainly not DECnet-RSTS. But don't get me started on the VMS implementation of async DDCMP. Dave (Mr. DECnet-DOS)

17 years, 11 months

4
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a new BBS...

by jlobocki＠gmail.com

comcast digital voice still permits you to make dialup modem calls >from what i understand, im guessing some VOIP providers may work as well, since CDV is VOIP, so it may work. http://www.comcast.com/customers/faq/FaqDetails.ashx?ID=2789 On Sun, Sep 21, 2008 at 2:15 AM, Zane H. Healy <healyzh at aracnet.com> wrote: > At 11:45 PM -0700 9/20/08, David Griffith wrote: >> >> Now as soon as I can figure out how to do POTS modem dialing through a >> cell phone, I'll call. > > How much longer will old fashioned modems continue to work with the evolving > phone systems that we have? When it was looking like I'd be forced to move > to Verizon FIOS a couple weeks ago, I made inquiries and learned that if you > have FIOS you can not use a modem. > > Zane > > > -- > | Zane H. Healy | UNIX Systems Administrator | > | healyzh at aracnet.com (primary) | OpenVMS Enthusiast | > | MONK::HEALYZH (DECnet) | Classic Computer Collector | > +----------------------------------+----------------------------+ > | Empire of the Petal Throne and Traveller Role Playing, | > | PDP-10 Emulation and Zane's Computer Museum. | > | http://www.aracnet.com/~healyzh/ | >

17 years, 11 months

1
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Apollo Guidance Computer

by rdawson16＠hotmail.com

There is the ocasional homebuilt, TTL CPU thread on here. I wanted to make known this guy, John Plutorak, who reproduced the guidance computer in his basement: http://klabs.org/history/build_agc/ Awsome project, take a look. I intend to build one too... Randy Dawson _________________________________________________________________ Get more out of the Web. Learn 10 hidden secrets of Windows Live. http://windowslive.com/connect/post/jamiethomson.spaces.live.com-Blog-cns!5…

17 years, 11 months

7
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Z80 home brew with FDC

by lynchaj＠yahoo.com

On 9/21/08 5:24 PM, "Alexis" <thrashbarg at kaput.homeunix.org <http://www.classiccmp.org/mailman/listinfo/cctalk> > wrote: > On Sun, 21 Sep 2008 09:37:51 pm Andrew Lynch wrote: >> I have a working prototype on my bench and can read and write sectors and >> format tracks. > > I never worked out how to format tracks on the 8272. It's one of the things > that puts me off using them. Could you describe how it's done? > > The other thing that puts me off is the data clock separator. How are you > doing this? Look at the code for the CompuPro Disk 1 interface. I don't have to code for my CBIOS handy but I recall that you have to establish a 6-byte command buffer (with the right parameters), establish the interleave (if formatting with one) and then loop through all of the tracks sequentially, sending the format command for each track. I used a hardware interleave so that my CBIOS didn't have to do it. The command buffer for my CP/M system looks like this. The fields come right >from the 8272 manual. FMTDAT .DB F_FMT ; format command .DB 00H ;HDS,DS1,DS0 .DB NFIELD ;N (0, 1, 2, 3) 0=128-byte sectors .DB FSC ;Sector count (26,15,8) =1ah .DB 01BH ;SPECIAL FORMAT GPL. .DB 0E5H ;D (FILLER BYTE) Rich -- Rich Cini Collector of Classic Computers Build Master and lead engineer, Altair32 Emulator http://www.altair32.com http://www.classiccmp.org/cini ------REPLY------ Hi Alexis, Rich, Thanks Rich! Yes, Rich has the right command sequence but you also need to send the C, H, R, N to the i8272 for each sector during the execution phase. It is not very intuitive but I got it working last night on my test bench and confirmed it is working with Dave Dunfield's IMD program (Thanks Dave!) and the Catweasel with CW2DMK (Thanks Tim!). For some odd reason it also requires a leading $00 to format correctly which I don't understand either. Basically, it is like writing a sector but you feed it sector metadata as it goes around the track formatting sectors. Note, during execution phase it is not like feeding the MSR/data registers like during the command/result phase. The whole NEC765/i8272 process is kind of screwy IMO and I am struggling to get my brain around it. I have sample code if you'd like to see it but it is an awful mess right now. As for the data separator, I am using an FDC9229 although you could use a FDC9239 I think. The chips are still available but not exactly common. You have to look but you can find them. I have some pointers if you'd like. Actually, Alexis, you'd be the perfect guy for building your own Z80 home brew FDC as you already have done most of this on your other projects. You did an awesome job on your home brew 8080 a while back and your other projects have been great too. Your experience would be a lot of help to the project in putting out a design that not only works but is reliable and flexible. I'd like to support as many hobbyists as possible so I am trying to preserve the hardware "hooks" to support 8" drives, etc. Due to the complexity of this project it could really use another set of eyes to check the design. There are many subtle issues with FDCs that require real hardware experience. One final note, the i8272 data sheet for the FORMAT TRACK command is rather misleading or at least incomplete IMO. I prefer the SMC FDC765 datasheet found on the BitSavers.org site (Thanks Al!). It also has data sheets for hard to find units like the FDC9216, FDC9229, FDC9239, etc. Warning: 45MB FILE! http://bitsavers.org/pdf/standardMicrosystems/_dataBooks/1985_StandardMicros ystems.pdf Thanks and have a nice day! Andrew Lynch

17 years, 11 months

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Sources for unusual d-sub connectors?

by ian_primus＠yahoo.com

Does anyone have a source for 19 pin d-sub connectors? The Apple II used these for disk drives. I haven't been able to find anyplace online that carries these. Any ideas? Similarly, what about 23 pin d-sub connectors (Commodore Amiga disk drive and video connectors)? -Ian

17 years, 11 months

5
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Sources for unusual d-sub connectors?

by roger.holmes＠microspot.co.uk

> > Does anyone have a source for 19 pin d-sub connectors? The Apple II > used these for disk drives. //e not ][, in Europe anyway. With a ][ or ][+ the drive has a 20 way connector which pushes straight onto the interface card and you trap it between the case and the lid as a strain relief. The //e had a short linking cable inside the case but if you had an old drive you could still do it the old way I think. Roger Holmes.

17 years, 11 months

1
0
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Magnetic peripherals (CDC) tape drive

by pat＠computer-refuge.org

I'm looking for any information (like tape cartridge type, capacity, bus interface) on a Magnetic Peripherals BY5A5-F tape drive (part no. 77024231). Thanks! Pat -- Purdue University Research Computing --- http://www.rcac.purdue.edu/ The Computer Refuge --- http://computer-refuge.org

17 years, 11 months

1
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Z80 home brew with FDC

by lynchaj＠yahoo.com

Hi, If anyone is interested in building a FDC for their Z80 home brew computer please contact me off list. I am building a FDC for my Z80 home brew computer and would like to see how it works for other builders. The design is general enough to adapt to most Z80 systems. It has IDE and i8272 (NEC 765) sections. I have a working prototype on my bench and can read and write sectors and format tracks. It includes a simple disk monitor program for testing the FDC which could be easily adapted to other systems. I would like to improve and refine this design and increase test coverage with other builders. Thanks and have a nice day! Andrew Lynch

17 years, 11 months

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Triple Crown Software needed for my model 700

by robert45140＠gmail.com

Jeff, Do you have access to the software for the 700? Regards Robert

17 years, 11 months

1
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What is a Smartnet Arnet card?

by dbuhs＠innovioncorp.com

Joe, Not sure how long ago you wrote about the arnet card, but I am looking for one. Dave

17 years, 11 months

3
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Sources for unusual d-sub

by cclist＠sydex.com

On 19 Sep 2008 at 17:54, Mr Ian Primus wrote: > Does anyone have a source for 19 pin d-sub connectors? The Apple II > used these for disk drives. Not that hard to find. Try these: http://www.electronicplus.com/content/ProductPage.asp?pagenum=2&lname= &maincat=CCo&subcat=CCo http://www.abra-electronics.com/products/catalog/D-Sub-Connectors- Solder-Type-p-4780.html http://www.ba-electronics.com/d-sub.htm JDR has the 19-pin D-sub sockets, but apparently no plugs. Cheers, Chuck

17 years, 11 months

1
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IMSAI 8080 on eBay

by js＠cimmeri.com

>From: "Mike" <michaelgreen42 at comcast.net> >Subject: IMSAI 8080 on eBay >To: <cctech at classiccmp.org> >Message-ID: <7CA2A42621B44381A42EB354A4390329 at pal> >Content-Type: text/plain; charset="us-ascii" > >I've decided to sell my IMSAI 8080. It is in excellent condition and comes >with two Discus 8" floppy drives. It has been posted on eBay. >http://cgi.ebay.com/IMSAI-8080-with-8-Floppy-Drives_W0QQitemZ120307050411QQc >mdZViewItem?hash=item120307050411&_trkparms=72%3A1205|39%3A1|66%3A2|65%3A12| >240%3A1318&_trksid=p3286.c0.m14 > For a big ticket item, that ad is really lacking in pics and information.

17 years, 11 months

2
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MC789P

by chapin6252＠roadrunner.com

I have a MC789P, never been used. Some one was looking for one. Don't remember why I got it. Charlie Chapin

17 years, 11 months

1
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FREE - IBM 5103 dot-matrix printer, IBM 5114 dual-floppy drive.

by tosteve＠yahoo.com

Ug, these things are huge. >From the days of the IBM 5110, the 5103 dot-matrix printer rollers are now gunk, and the 5114 8-inch dual floppy drive system weighs maybe 100 lbs. Come and take them away, please! Orange County, CA Bring a truck.

17 years, 11 months

1
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IMSAI 8080 on eBay

by michaelgreen42＠comcast.net

I've decided to sell my IMSAI 8080. It is in excellent condition and comes with two Discus 8" floppy drives. It has been posted on eBay. http://cgi.ebay.com/IMSAI-8080-with-8-Floppy-Drives_W0QQitemZ120307050411QQc mdZViewItem?hash=item120307050411&_trkparms=72%3A1205|39%3A1|66%3A2|65%3A12| 240%3A1318&_trksid=p3286.c0.m14

17 years, 11 months

2
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IBM 4Tb F50 "Shark" in Florida

by tonym＠compusource.net

My company upgraded, and are getting rid of the older F50 we have. Unit has 4TB, and is the older "double-wide" 6' tall cabinets. Looking to get $1500 OBO for it. Anyone interested, let me know. It's spent it's entire life in a proper data center, and has already be decommissioned and removed from service, but has still been kept in the data center. Obviously, this would not be worth it for a person outside Florida. It is presently located in Miami,FL near the west end of the airport. It would need to be picked up, but we do have a proper loading dock, and freight elevators. We can assist with loading the unit. Thought maybe someone on the list may be interested, or know someone, to get a decent deal on a Shark. Tony

17 years, 11 months

1
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Ankh for Apple ][?

by wayne.smith＠charter.net

Go to: ftp://ftp.apple.asimov.net/pub/apple_II/images/games/file_based/ And look for: ankh_crimewave_deathmaze5000_starmaze.dsk.gz Wayne Smith > Date: Tue, 16 Sep 2008 17:36:15 -0700 (PDT) > From: Sellam Ismail <sellam at vintagetech.com> > Subject: Ankh for Apple ][? > To: Classic Computers Mailing List <cctalk at classiccmp.org> > Message-ID: <Pine.LNX.4.61.0809161733000.19817 at vintagetech.com> > Content-Type: TEXT/PLAIN; charset=US-ASCII > > > Does anyone remember the game Ankh for the Apple ][ (and > probably other platforms)? It can be considered a pre-cursor > to these online puzzle games done in Flash that are prevalent > all over the internets these days. > > Ankh had all these strange puzzles in a maze that you moved > around in, collecting parts and pieces that you would use in > other parts of the maze to open or close doors or boxes or whatever. > > I played it out for several hours one day but, my copy being > a pirated one, it was corrupted at some level and I could > never get past a certain point. > > Does anyone have a good copy of this game that I can > download? I sure would appreciate it as I'd like to finish > it and see what happens in the end. > > Thanks! > > -- > > Sellam Ismail Vintage > Computer Festival > -------------------------------------------------------------- > ---------------- > International Man of Intrigue and Danger > http://www.vintage.org > > [ Old computing resources for business || Buy/Sell/Trade > Vintage Computers ] > [ and academia at www.VintageTech.com || at > http://marketplace.vintage.org ] >

17 years, 11 months

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Need H-89 serial port docs...

by geneb＠deltasoft.com

I've got one of the three port H-89 serial boards and I think I've got the connector for port 330 wired incorrectly. The CD bit is never set even when carrier is present (cable and modem known good). Does anyone out there have the pinouts for the card-end of the internal RS-232 cable that I could get a copy of? Thanks! g. -- Proud owner of F-15C 80-0007 http://www.f15sim.com - The only one of its kind.

17 years, 11 months

3
3
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Ankh for Apple ][?

by sellam＠vintagetech.com

Does anyone remember the game Ankh for the Apple ][ (and probably other platforms)? It can be considered a pre-cursor to these online puzzle games done in Flash that are prevalent all over the internets these days. Ankh had all these strange puzzles in a maze that you moved around in, collecting parts and pieces that you would use in other parts of the maze to open or close doors or boxes or whatever. I played it out for several hours one day but, my copy being a pirated one, it was corrupted at some level and I could never get past a certain point. Does anyone have a good copy of this game that I can download? I sure would appreciate it as I'd like to finish it and see what happens in the end. Thanks! -- Sellam Ismail Vintage Computer Festival ------------------------------------------------------------------------------ International Man of Intrigue and Danger http://www.vintage.org [ Old computing resources for business || Buy/Sell/Trade Vintage Computers ] [ and academia at www.VintageTech.com || at http://marketplace.vintage.org ]

17 years, 11 months

2
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substitute tube for DEC VR201?

by chrise＠pobox.com

This is probably an old question but, well, I'm new to the list... Is there a known substitute CRT (both mfr and p/n) for the tube that is in a DEC VR201 monitor such as used with a DEC Rainbow? I have a VR201 that has the infamous mold on the inside of the tube's face. I am not up to peeling the face off and trying to fix it so am interested in just swapping out the tube. After going through all the docs I can find, I never did come up with a mfr or p/n for the tube itself so don't have a way to do a cross-reference. Of course if anyone has a non-moldy, b/w or amber VR201 that they want to get rid of... say the word. Chris -- Chris Elmquist mailto:chrise at pobox.com

17 years, 11 months

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HK ET-1000 Trainer

by bob.latterman＠gmail.com

Are you still looking for a ET-1000 trainer? I have one in very good condition. I was about to put it on ebay. I sold my last one for about $45.00. Let me know if you are interested. -Bob

17 years, 11 months

2
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Farallon appletalk

by rborsuk＠colourfull.com

Hi, I have a Farallon Appletalk network concentrator with management functions. Free for the taking (port huron - Michigan) - will ship at cost (about 30 pounds). I need this gone yesterday. If there's no interest, into the trash it goes. Rob ps. Pic at http://homepage.mac.com/irisworld/craigs/appletalk.jpg Rob Borsuk email: rborsuk at colourfull.com Colourfull Creations Web: http://www.colourfull.com

17 years, 11 months

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Would anybody know of any CP/M Libraries for the i8231 or AM9511 Math Processor ?

by ragooman＠comcast.net

Would anybody know of any CP/M Libraries for the i8231 or AM9511 Math Processor ? This is on the Compupro SS-1 card which I'm using in my IMSAI system. I like to upgrade my system to include any Libraries that may be available. Then I could program with Fortran or any other compiler which is supported. I'm currently using machine code to fiddle with programming this. The manual only has test code for this card and doesn't mention any reference to a Library being available for CP/M. So I was hoping it was created separately during that time. thanks, =Dan -- [ Pittsburgh 250th --- http://www2.applegate.org/~ragooman/ ]

17 years, 11 months

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substitute tube for DEC VR201?

by dm561＠torfree.net

Date: Mon, 15 Sep 2008 22:03:28 +0100 (BST) From: ard at p850ug1.demon.co.uk (Tony Duell) Subject: Re: substitute tube for DEC VR201? > > On Saturday (09/13/2008 at 08:52PM +0100), Tony Duell wrote: > > > I'm also toying with the idea of fitting an LCD into a VR201 cabinet > > > and although it wouldn't be authentic, it would sure make the system > > > more useable. > > > > I am curious as to why an LCD in the VR201 cabinet is more useable than > > the CRT. I can't see much difference in useability (but would much rather > > have to repair a CRT_based monitor than an LCD-based one). > > Well, if I can't find a tube to replace it... then I'd consider an LCD. Do you really have no old 12" monchrome portable TVs/monitors around? I am sure you could find a CRT that would work. ---------------------------- I've got a number of CRTs here, white/green/amber, new/used, various sizes, if the OP's serious, but I'm not sure how I'd safely ship one. m

17 years, 11 months

4
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HP-IB Mass Storage Emulation (Help)

by niche＠iinet.net.au

Any progress on this HP-IB Mass storage device for a PC ? Regards from Mike Massen BSc Network Power Systems Lab 08 9444 8961 Mb 0438 048961 Perth, Western Australia * VL/VK & VN/VP/VR GMH Commodore Fuse Rail that wont warp or melt ! * RB30 Skyline/Nissan/VL Milspec ignition drivers with diagnostic features now in economy trials * Twin tyres for most sedans, trikes and motorcycle sidecars * Industrial grade PolyVinyliDeneChloride (PVDC Copolymer) in bulk, the best oxygen and water protective barrier you can find for circuit boards. Web site under construction http://niche.ii.net Pictures of visit to Mendulong re RAPS retrofit, http://members.iinet.net.au/~erazmus/Power/

17 years, 11 months

1
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UPS Store has me annoyed

by tiggerlasv＠aim.com

On 15 Sep 2008 at 17:25, David Griffith wrote: > Second, the prices of their boxes is astronomical. > A 30x30x20 outer carton cost $12. > The inner carton cost $8. The total just for packing this computer came to $68. > The computer itself sold for $55. I work for a freight company; 36 x 22 x 20" boxes cost us $11.75 each, when purchased in quantities of 50 or more. We order full rolls of large-bubble bubble-wrap at aroudn $45 / roll; 1/4 roll would cost you about $11.25. I'd say the price for packing is reasonable, taking into account labor, and their markup. If you're going to ship this type of equipment, it's best to get a rough quote first, and simply advise the buyer that he is responsible for all shipping costs. Yeah, it's nice to have an exact dollar amount ahead of time, but the only way that's going to happen is if you take your photos first, have the unit boxed up, and then post it for sale. Alternately, you can buy the materials yourself; U-haul has an interesting selection of boxes, and also carries rolls of bubble wrap. That has the added benefit of knowing that your item is adequately packed. T

17 years, 11 months

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IBM 5150 4/81 bios

by jzg22＠drexel.edu

Does anyone have a copy of this? Its needed for the MESS (a computer hardware documentation/emulation) project. -- Jonathan Gevaryahu jgevaryahu(@t)hotmail(d0t)com jzg22(@t)drexel(d0t)edu

17 years, 11 months

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[Ottawa, Canada] Sale of working Columbia 1600-VP

by falbert＠rogers.com

To make space I am having to part with the above computer. Condition is "Good - Working" (i.e. no parts missing, a few scuff marks and other signs of wear. Boots up and runs fine.) I have just tested it using Communique 3.1 (an old DOS word processing package) and - after adjusting a few keys in the keyboard - it works fine. Description Columbia 1600-VP by Columbia Data Products Date of Manufacture 2-84 Rev J Serial Number 13136A Portable (luggable 35 lbs/16Kg) IBM clone 9" green monitor 2 5.25 (360K) disk drives 128K memory Other info on the 1600 can be found at: http://www.old-computers.com/museum/computer.asp?st=1&c=889 I have a boot disk for it and several word processing programs (it was used to teach word processing). I also have well over 100 5.25 disks as well. I'd be happy to include these for no additional charge. Any reasonable offer plus shipping will be considered.

17 years, 11 months

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UPS Store has me annoyed

by dgriffi＠cs.csubak.edu

I went down to the local UPS store to have an Osborne Executive double-boxed for shipping to its new owner. I previously had this store double box two IMSAIs and two Altairs. Each time it cost around $35 to do it. This time it was way out of line. First, they were out of big bubbles, so they had to use lots more of the little bubbles to get two-inches of padding all the way around. Second, the prices of their boxes is astronomical. A 30x30x20 outer carton cost $12. The inner carton cost $8. The total just for packing this computer came to $68. The computer itself sold for $55. -- David Griffith dgriffi at cs.csubak.edu A: Because it fouls the order in which people normally read text. Q: Why is top-posting such a bad thing? A: Top-posting. Q: What is the most annoying thing in e-mail?

17 years, 11 months

2
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HP-150 and AT&T 3B1 UNIX box, FREE in Spokane, Washington

by tosteve＠yahoo.com

Please contact GARY below, these are not my systems. ---------------------------------------------------- One HP 150 touchscreen (1984), inkjet printer and software. Also have one AT&T 3B1 UNIX box, with software. They both work. Free, you pay shipping. Gary Redmond gfredmond at comcast.net ----------------------------------------------------

17 years, 11 months

1
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The Great Trailer Incident -- ECLIPSED !!!

by evan＠snarc.net

Many of you may recall The Great Trailer Incident (tm) of 2004, in which cctalk owner Jay West ventured from St. Louis to Boston for VCF East 2.0, only to encounter a flat tire, incompetent police dispatchers, poison ivy, and -- according to rumor on the VCF show floow -- arrest, fire, crashing, computer tragedy, possibly death, and/or an encounter with a minicomputer-hating wild boar. Okay, so the part about the minicomputer-hating wild board MIGHT not be true, but personally I think that's what really happened. Jay's version of the story is here: http://www.classiccmp.org/pipermail/cctalk/2004-July/045851.html I'm simultaneously proud (and fucking ASTOUNDED) to share the news tonight that Vince Briel, this weekend at VCF East 5.0 in New Jersey, ** BEAT ** Jay's adventure!!!!! Vince's weekend began ordinary enough. He packed his car and left Cleveland on Friday morning for the 8-hour drive to central New Jersey. He arrived in the late afternoon / early evening. Just like the other exhibitors who arrived Friday for the Sat./Sun. event, Vince unpacked his car and began setting up his table. Then he came to me after an hour and said, "Evan, there is a problem." He looked extremely distraught. I know Vince pretty well, so I figured either there was a real problem, or (more likely) there was a punchline to follow, perhaps at my expense. Vince was scheduled to run a replica-building workshop this morning. What he revealed Friday night was that he forgot to pack the replica kits. No boggie. Just cancel the workshop, and people will understand that it was a simple mistake, I told him .... but Vince would have none of that .... in the dark and in the pouring rain and clearly tired, Vince decided to DRIVE BACK TO CLEVELAND TO GET THEM. I and others tried to talk him out of it, with no luck. Vince got home to Cleveland, slept for just 2 hours, then made sure he had the kits this time and DROVE BACK TO NEW JERSEY -- for a total of 24 hours of highway driving in about a 35-hour span -- much of it in the dark and/or rain, and much of it on increasingly little sleep! Quite frankly, I wouldn't want to have been the cars near him, especially on the second trip to Jersey yesterday morning. His workshop this morning was a huge success. Then a few hours later, after the show ended, he (of course) drove home (again) to Cleveland. In total that's 32 hours of highway driving, much of it in the dark and/or rain, much on little/no sleep, spending hundreds of dollars on gas, all a three-day span, just because he's a dedicated, hard-core, loyal, and (apparently) clinically insane VCF supporter. THE GREAT TRAILER INCIDENT HAS BEEN BEAT. Vince is god. - Evan

17 years, 11 months

1
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PCjr Telnet Server Test

by oldcpu2＠rogerwilco.org

Sun Sep 14 12:17:30 CDT 2008, Jason T said: > First of all, way cool project. I'm in now with a couple different > clients (Windows and PuTTY in raw mode, showing the echo you > mentioned.) Is anyone unable to route to this IP? I'm on Comcast > cable and in fine, but a local friend with AT&T DSL shows no route to > that host, which is a bit odd. You're on Charter (cable, I think?) so > it's not like you're some offshore spamhaus. Then again it could > just be him. Weird. I'm using Qwest DSL, and have no problems reaching The Mighty Peanut. We tried a couple of WinXP telnet and PuTTY sessions. I noticed that the WinXP telnet client was listed as "ANSI" and the PuTTY client was listed as "XTERM". I had to use Shift-Backspace or CTRL-H to backup on PuTTY. The Win client worked fine with the backspace key. I don't have any way to really pound the little peanut, but I did just sit on my RETURN key for a while, and let the peanut try to send the HELP message as fast as my RETURN key would repeat. Seemed to hold up just fine. Well done, Mike! - Jared

17 years, 11 months

1
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manual 4 A B&C Microsystems 1409 Prom Burner

by dm561＠torfree.net

Date: Fri, 12 Sep 2008 12:28:07 -0700 From: dave hunter <hunt_x at hotmail.com> Subject: manual 4 A B&C Microsystems 1409 Prom Burner >Hi mike I just found a post where you stated you had a manual >for one of these beasts (B&C Microsystems 1409 Prom Burner) >whats the chance i could get a copy I could shoot you cash via >paypal asap thanks a million >Dave Hunter --------- I replied off-list; let me know if you got it and if it's what you need. m

17 years, 11 months

1
0
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ISO: NEC UPD72070 IC

by ajp166＠bellatlantic.net

> >Subject: Re: ISO: NEC UPD72070 IC > From: "Chuck Guzis" <cclist at sydex.com> > Date: Sat, 13 Sep 2008 08:36:26 -0700 > To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org> > >On 12 Sep 2008 at 18:58, Allison wrote: > >> It in the intel data book page 3-32 (1988 volume2 peripheral with black cover). >> I have that datasheet but the scanner is down. > >You're not thinking of the 82078 are you? 64 pin, but very different >chip, both in pinout and command set. If you've got a part number, >I'll go digging for it, but AFAIK, the NEC part was a special for >Apple--I've never seen it anywhere else. > >Cheers, >Chuck Oops, intel 82070 a reall oddball as well but not the same part. Allison

17 years, 11 months

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Anyone have some spare external DSSI cables? (VAX 4000 to HSD10)

by glen.slick＠gmail.com

I have an HDS10 in a BA350 I'd like to try attaching to a VAX 4000 but I'm missing an appropriate external interconnect cable. It appears that what I need is a BC29R (p/n 17-03855-xx) or equivalent cable with a PS connector on the VAX end and a MR connector on the HSD10 end. Anyone have some extra of these that they don't need and are willing to part with them for a reasonable amount plus postage in the US? -Glen http://h71000.www7.hp.com/wizard/cable-guide.html BC29R DSSI Cable for HSD. Description: DSSI cable to connect the VAX/DEC 4000 system to the HSD05 or HSD30 DSSI to SCSI adapter/controller. Specification: Connectors: One 50-way MR (micro-ribbon) right-angled connector for the HSD, and one 50-way PS (pin socket or tab) right-angled connector for the system end. Ordering Information: BC29R-06, -09, -16, -30, 45, -60. p/n 17-03855-04, -05, -06, -07, -08, -09.

17 years, 11 months

1
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ISO: NEC UPD72070 IC

by ajp166＠bellatlantic.net

> >Subject: Re: ISO: NEC UPD72070 IC > From: "Chuck Guzis" <cclist at sydex.com> > Date: Fri, 12 Sep 2008 12:21:20 -0700 > To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org> > >On 12 Sep 2008 at 11:34, Al Kossow wrote: > >> Very unusual part. It was the only externally developed floppy controller >> Apple ever used that supported GCR. Were you able to find data on it? > >In Japanese, a datasheet along with an app note on NEC's website >(http://www.necel.com). Easy enough to suss out in spite of the >chicken scratches. Basically a uPD765 controller with a bunch of add- >ons for the GCR stuff. > >> I doubt you will be able to find one w/o unsoldering it from an AV board. > >I suspect as much. Maybe there's someone out there with a junker... > >Cheers, >Chuck It in the intel data book page 3-32 (1988 volume2 peripheral with black cover). I have that datasheet but the scanner is down. Allison >

17 years, 11 months

2
1
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PCjr Telnet Server Test

by jeff.kaneko＠juno.com

Waaaaaaaay too cool . . . . -- "Michael B. Brutman" <mbbrutman-cctalk at brutman.com> wrote: It's running! Telnet to 97.86.233.68 to take a look and help me test it. You can use the standard Windows telnet program, Putty, Linux, or whatever you have handy. Around 10 users can be on at the same time. When you sign on (no password required) there will be a little menu to help you waste some time. Some things you can do are see who else is on the server, view the machine type, ROM BIOS date and DOS version, check the TCP/IP statistics to see how much traffic it is handling, etc. There are some upgrades since the last time I ran this test (in Dec 2007): - The TCP/IP stack is much better - I'm doing 'telnet' negotiation to figure out the terminal type, turn echoing on, etc - Crude line editing has been added Right now it is running on my PCjr using a Xircom PE3 10BT. I plan to leave it up as long as it runs, or three days, whichever comes first. It is a PCjr so if there is a momentary delay, don't panic - it's probably just doing disk I/O. Backspace is a little dodgy .. it really wants ASCII 8 and a lot of terminals and emulators do ASCII 127 instead. Try variations with the shift and control keys if it doesn't work. Thanks, Mike ____________________________________________________________ Save hundreds on an Unsecured Loan - Click here. http://thirdpartyoffers.juno.com/TGL2141/fc/Ioyw6i3m3iTRdQUEvUXDmbZcm2uAgLT…

17 years, 11 months

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FFS: Visual Terminal guides

by silent700＠gmail.com

Free for shipping from 60074: Visual 630 User's Guide and Visual 600 Owner's Guide. Two spiral-bound books in very good shape.

17 years, 11 months

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manual 4 A B&C Microsystems 1409 Prom Burner

by hunt_x＠hotmail.com

Hi mike I just found a post where you stated you had a manual for one of these beasts (B&C Microsystems 1409 Prom Burner) whats the chance i could get a copy I could shoot you cash via paypal asap thanks a million Dave Hunter _________________________________________________________________

17 years, 11 months

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ISO: NEC UPD72070 IC

by aek＠bitsavers.org

> Anyone have a spare one of these chips? This was used as the floppy > controller on the AV Macs. Very unusual part. It was the only externally developed floppy controller Apple ever used that supported GCR. Were you able to find data on it? I doubt you will be able to find one w/o unsoldering it from an AV board.

17 years, 11 months

2
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The MicroChip is 50 today.

by aek＠bitsavers.org

The Texas Instruments integrated circuit is 50 today. I have no idea what a "MicroChip" is. "Microchip" is the company currently making PIC microprocessors.

17 years, 11 months

2
1
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ISO: NEC UPD72070 IC

by cclist＠sydex.com

Anyone have a spare one of these chips? This was used as the floppy controller on the AV Macs. Contact me off list if you've got one that you are willing to part with. Thanks! Chuck

17 years, 11 months

1
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Osborne 1

by tponsford＠rnsmte.com

So I was complaining to my significant other on the recent dearth of classic computers at out local university auction! Well the computer gods must have heard me as I got a working Osborne 1 in great condition, with even the cp/m disk in the floppy drive for $15.00 on Tuesday!! I am now only missing a KayPro for my "luggable" collection to be mostly complete!! Cheers Tom

17 years, 11 months

4
3
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Suggestions for cleaning hundreds of socketed chips?

by derschjo＠msu.edu

Hey all -- I've gotten the power supply in one of my ND-812s running (thanks for the help w/the 1103 data which helped verify the voltages) and it appears to be within spec under load (correct voltages, no ripple in the output, etc...) so I powered the machine on and despite having my fingers crossed, the machine does not run. (No real surprise there). Random lights on the front panel, and basically no response to any toggle switches. I started pulling out and reseating the chips on the main CPU board and powered it up after every few rows, and every time the behavior was slightly different, so I'm fairly sure that the sockets and chips aren't all making good connections anymore. Seems like solving this problem would be a good place to start. The problem is that there are 25 rows of 13 chips each (all socketed), in very close proximity to one another. The chips are in sockets with wire-wrap pins underneath -- the underside of the main CPU board is a maze of wire wrapping. Most of the chips have date stamps between 1971 and 1973, but luckily most of them aren't corroded to the point where they're falling apart. How would you suggest cleaning the sockets and the chips to ensure good connections? Thanks, Josh

17 years, 11 months

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Another disk imaging project

by lynchaj＠yahoo.com

Hi, I came across the following message from Dave Dunfield from a couple of years ago during a search related to the Z80 i8272 home brew project I am working on. I recently got the i8272 FDC to reliably read sectors from a MS-DOS formatted 5.25" floppy disk drive. This project is underway but I am a long ways from completion. During the debugging of my system, I have noticed that there some possibly useful raw disk signals being generated by the data separator chip. These could be rather easily exported to support a disk imaging project were anyone interesting in such a thing. The signals are going *into* the i8272 (NEC 765) for processing and are raw data signals. The i8272 would not be used to process the data. This *potentially* opens up access to any FM/MFM encoded disk even hard sector. I don't know about other formats such as GCR, M2FM, RX02, etc. Here is what I propose; my SBC and Disk IO board generates intermediate product signals such as "separated clock", "separated data", "clock out", "index", etc and buffer them through a 74LS367 or similar. I am willing to make *MINOR* modifications to the Disk IO board to export these signals via a connector and even add one or two small chips to the design to improve signal quality. I am *NOT* willing to make major modifications to the design at this point as I have a mostly working system and do not want to start over. The intermediate disk signals could, *I believe* be imported into a PC parallel port with "clock out" (typically 500 KHz for MFM DSDD, 250KHz for FM, etc) being used for latch signal. I think they are also slow enough to be practically captured by the PC parallel port. The PC could then sample the parallel port at high rate (interrupt driven? DMA?) to read the signals and create a disk image from the data. Again, the i8272 would not process the signals so they would contain all the data the i8272 processes but will not pass along such as header info, IDAM, CRC, true gap length, etc. I could even include true "raw read" signal which would be the bit transitions straight from the drive however due to the high sampling rate required to accurately capture it I really don't think it would be much use. Would it be possible and/or practical to make a PC based disk imaging tool using the SBC as an intermediate stage? Please note, I am only offering to make minor modifications to my SBC and Disk IO board to support such a project, not to conduct a PC based disk imaging software development project myself. I wrote some hard sector Catweasel programs earlier for Heath, Vector Graphic, and NorthStar so I have some familiarity working with raw disk data, however, the home brew Z80 project is using up all my hobby time. If you are interested please reply here or contact me. Thanks! Andrew Lynch PS Here is the Z80 i8272 home brew project I am working on for background information http://groups.google.com/group/n8vem?hl=en Another disk imaging project Dave Dunfield dave04a at dunfield.com <mailto:cctech%40classiccmp.org?Subject=Another%20disk%20imaging%20project&I n-Reply-To=> Wed Aug 3 04:58:06 CDT 2005 * Previous message: ImageDisk and some 8' images posted * Next message: Another disk imaging project * Messages sorted by: [ date ] [ thread ] [ subject ] [ author ] ________________________________ Hi Guys, I'm really getting fed-up with the limitations of the PC floppy disk controller. Here's another idea I've had on the back-burner for quite some time, I've mentioned to a couple of you during private correspondance, but here it is for open discussion. The idea is to make a small single-board computer with a microcontroller, a WD2793 or similar floppy disk controller, enough memory to buffer a few tracks, and a high-speed serial port for communication with the PC. The board would have connectors for 5.25"/3" drives and 8" drives, and would properly interface to all drive types. Firmware would be developed to provide read/format/write/analysis capabilities around the more powerful WD chip. Images would be transferred via the serial connection to and from the PC. This should allow us to archive soft-sector formats that are not compatible with the PC, and also to perform these functions under virtually any PC environment. I just haven't had time to design and build the board ... anyone else interested in working together on such a project? Regards, Dave -- dave04a (at) Dave Dunfield dunfield (dot) Firmware development services & tools: www.dunfield.com com Collector of vintage computing equipment: http://www.parse.com/~ddunfield/museum/index.html

17 years, 11 months

2
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ECC on MFM drive

by ra9yer＠yahoo.com

>> Yes. Indeed. I checked it again and it is the regular >> CRC circuit with unusual initial value and polynomial. > What are these values? They are not documented in the data sheet. The polynomial is 0x140a0445 (x32+x28+x26+x19+x17+x10+x6+x2+1), the initial value is 0x9dcd57c0. It is need to do following steps to check crc: 1 Init sift register by initial value 2 Process 0xf8 (MSB first) 3 Process 512 bytes of data 4 Process 4 bytes CRC. If everything is ok then value in the shift register will be zero. Alexander.

17 years, 11 months

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DEQNA/DELQA cab kit with DEUNA/DELUA?

by oldcpu2＠rogerwilco.org

> The DEQNA and DEUNA print sets have been on-line for some time. > > Don't forget the archives and links at: vt100.net/manx > Here is the DEUNA link: > > http://vt100.net/manx/details/1,3463 As for locating the DEUNA information, thanks to an earlier respondent, I have dragged a copy of that out of bitsavers.org. For some reason, I just couldn't find it. I must have looked in various PDP subdirs, the ethernet subdir, but missed it in the unibus subdir. Doh! [BTW, a huge thank you to Al and Paul for building and maintaining such valuable resources. Where's the tipping jar, eh, gentlement?] Thanks to all who replied to my original post. It is clear that the cab-kits for QBUS modules are more or less usable with UNIBUS modules. That's the news I was hoping to find. It'll still be a while before I'm ready to test it all out on the 11/750, due to ongoing power supply hickups and troubleshooting, but it shouldn't be long now. Jared

17 years, 11 months

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Okay, THIS is the final VCF East reminder

by evan＠snarc.net

Very last pre-show email ..... if you live within a few hundred miles of the Jersey shore, and you dig vintage computers, then don't be a putz! Come to the VCF East 5.0 this weekend. Tickets are 10 bucks for one day or 15 for both days. Free for 17 and younger. Parking's free too. Saturday is usually the busier day, but on Sunday (at 11:30) is a speech by Bill Mauchly, who's the son of John Mauchly, of ENIAC and UNIVAC fame. We're also opening the computer museum here in "beta" mode. More info is at the usual spot: http://www.vintage.org/2008/east/ I'm WAY too busy with final details to check back on cctalk, so if anyone has questions, please just call my cell phone, 646.546.9999. - Evan K.

17 years, 11 months

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Another disk imaging project

by lynchaj＠yahoo.com

Andrew Lynch wrote: > The intermediate disk signals could, *I believe* be imported into a PC > parallel port with "clock out" (typically 500 KHz for MFM DSDD, 250KHz for > FM, etc) being used for latch signal. I think they are also slow enough to > be practically captured by the PC parallel port. The PC could then sample > the parallel port at high rate (interrupt driven? DMA?) to read the signals > and create a disk image from the data. Again, the i8272 would not process > the signals so they would contain all the data the i8272 processes but will > not pass along such as header info, IDAM, CRC, true gap length, etc. The Disk2FDI project has already done this; give it a look to see if it applies to your situation. -- Jim Leonard (trixter at oldskool.org <http://www.classiccmp.org/mailman/listinfo/cctalk> ) 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/ -----REPLY----- Jim, Thanks for the reply. I already have a Catweasel and programs to read hard sector disks so I really don't need another disk imaging utility. My intent was to offer to contribute if anyone were interested in the CCTALK community to try again on a disk imaging project. The modifications required to my Disk IO board *appear* to quite minor to get access to the raw disk signals so it seemed like a good opportunity. What I had in mind was a low cost, open project, open source, available hardware and software information made of common parts for everyone. Sort of in the spirit of the N8VEM project but with a different theme. However, I realize how these projects have ended on CCTALK in the past and I can see there is no interest now so I'll just let it pass. My hobby time is limited and I have choose carefully what I work on like everyone else. Thank goodness for the Catweasel! Andrew Lynch

17 years, 11 months

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Does anyone have an electronic copy of the "OS/8 Software Support Manual"?

by ethan.dicks＠usap.gov

Hi, all, I have my sbc6120 here and wanted to do a little OS/8 programming, but I think I'm stumped for a particular bit of doco - according to the "OS/8 System Reference Manual" (DEC-8-OSRMA-A-D), the User Service Routine is documented in the "OS/8 Software Support Manual" (DEC-8-OSSMA-A-D). I've found many OS/8 docs on Highgate and Bitsavers (DEC-S8-OSSMB-A-D, the 1974 "OS/8 Handbook", memos, etc.), but not that exact one. The reason why it matters is that if you want to do file I/O, directory lookups, etc., you use the USR. For stuff that doesn't depend on OS/8 filesystem operations, there's plenty of info out there for FORTRAN, BASIC, FOCAL, assembler, etc. Imagine trying to program in UNIX without knowing how to setup and call stdio routines. That's kinda where I'm at. I've found one or two narrow examples where some code fragments call the USR for a particular function, but I really just need the Software Support Manual. Thanks for any leads, -ethan -- Ethan Dicks, A-333-S Current South Pole Weather at 9-Sep-2008 at 00:00 Z South Pole Station PSC 468 Box 400 Temp -80.5 F (-62.5 C) Windchill -112.5 F (-80.3 C) APO AP 96598 Wind 7.1 kts Grid 104 Barometer 672.9 mb (10897 ft) Ethan.Dicks at usap.gov http://penguincentral.com/penguincentral.html

17 years, 11 months

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Intersil Intercept Models...

by aek＠bitsavers.org

> Also, Intersil had their own disk (floppy disk, that is) operating system > for the Intercept I/II called IFDOS. I have a manual for IFDOS, but it > doesn't describe the floppy disk hardware for the Intercept. Was it a clone > of the RX01/RX8E? Have any copies of IFDOS media survived? Charlie Lasner wrote it. I'm sure he must have a copy.

17 years, 11 months

3
2
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Intel Application Notes

by lynchaj＠yahoo.com

Hi, Does anyone have a copy of the Intel Application Notes AP-116 and AP-121 they'd be willing to scan or place online? They are mentioned in the i8272A datasheet but I cannot find them online anywhere (I tried bitsavers.org/pdf first!) I am building an FDC using an i8272 and would appreciate the additional technical details. Thanks! Andrew Lynch

17 years, 11 months

1
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any Apollo fans out yonder?

by aek＠bitsavers.org

> I am guessing close to abandonware - but not quite. As I understand > it, HP is still the copyright holder. CHM is currently working with the HP archivist to try to get the Apollo code released under similar terms as the HP1000. One of the hangups is the UNIX licensing.

17 years, 11 months

2
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Intersil Intercept Models...

by bob＠jfcl.com

Al Kossow wrote: > Charlie Lasner wrote it [Intersil IFDOS]. I'm sure he must have a copy. You don't say.... Small world, eh? So is IFDOS in any way related to PS?8 ? Charles H Dickman wrote: > He seems to have disappeared. I have not seen a posting from Mr. Lasner >on pdp8-lovers in years. I last spoke to CJL in 2006 when he contacted me about the SBC6120, so he is still around. He just doesn't post as much as he used to. Bob

17 years, 11 months

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[Fwd: Re: SuperPET MMU]

by brain＠jbrain.com

I hate to include folks mid-discussion, but Mike is trying to get the SuperPET functionality running, and it refers to a HOSTCM program running on VM/CMS. Anyone have a copy, some insight, etc.? Jim -------- Original Message -------- Subject: Re: SuperPET MMU Date: Wed, 10 Sep 2008 13:17:20 -0700 From: Mike Naberezny <mike at naberezny.com> To: Jim Brain <brain at jbrain.com> References: <48C2236E.5060303 at naberezny.com> <48C352FD.1040200 at jbrain.com> <48C3574B.8010805 at naberezny.com> <48C59CCB.1000300 at jbrain.com> Jim Brain wrote: > Hmm, a mystery. Any chance you can sniff the UART traffic? Yes, I can do that. I already made a sniffer for another project. I'm not sure it will give much insight with the SuperPET alone. I'd probably need to listen to something speaking HOSTCM with the SuperPET. However, observing the bytes sent from the SuperPET when it initiates a transfer might give clues. I did find something interesting in a VM/CMS (mainframe OS) reference manual [1]. If you search for HOSTCM in that document, there is mention that a "MANUAL" command outputs the HOSTCM specifications. It also says "The KERMIT command also performs most of the functions of HOSTCM". It seems likely then that HOSTCM is a built on the Kermit protocol. This seems further confirmed by a message [2] from William Levak on cbm-hackers a while back. Although all of his attempts to transfer files from the SuperPET with "normal" file transfer protocols failed, he says Kermit did more than the others. This gives me a few good next steps. I'll play around with Kermit while monitoring the RS-232 lines. From web searches, I found there are also some mainframe guys that are running VM/CMS in emulators these days. I'll try to make some contacts and see if someone has HOSTCM and can run that "MANUAL" command on it. Regards, Mike [1] http://ukcc.uky.edu/ukccinfo/391/cmsref.html [2] http://www.softwolves.pp.se/misc/arkiv/cbm-hackers/1/1128.html -- Mike Naberezny (mike at naberezny.com) http://6502.org -- Jim Brain, Brain Innovations (X) brain at jbrain.com Dabbling in WWW, Embedded Systems, Old CBM computers, and Good Times! Home: http://www.jbrain.com

17 years, 11 months

2
1
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Intersil Intercept Models...

by ajp166＠bellatlantic.net

> >Subject: Intersil Intercept Models... > From: "Bob Armstrong" <bob at jfcl.com> > Date: Wed, 10 Sep 2008 07:39:24 -0700 > To: "'General Discussion: On-Topic and Off-Topic Posts'" <cctalk at classiccmp.org> > > Intersil made several PDP-8 "work a likes" based on their 6100 chip, and >I'm trying to figure out a few of the exact details. OK, I know this is >really obscure, but I'm hoping somebody out there has used one or at least >seen one :-) > > The Intercept Jr was the SYM or KIM like single board computer with a >chiclet keypad and seven segment displays and powered by D cells. That >one's easy to identify. However, after they bought out Intersil, Harris >made a thing called the "Micro12" which was a little like the Intercept Jr >but is clearly not the same. There are no D cells on the Micro12 for one >thing, and more logic on board for another. I only have pictures of the >Micro12, but no details. Does anybody know any more about this gizmo? There was a 6100 sampler that was a minimal board with TTY interface. I have one of those. The Intercept-JR did have batteries, it was one of the features all cmos and low power. Fun to play with and useful. The Micro12 was the same beast >from memory. If I could find details on the -JR I'd build one. > And the "Intercept I/II Microcomputer Development Manual" (which I do >have) has pictures and specifications for the Intercept I and II. The I is >in a 3-1/2" chassis that holds four cards horizontally, and the II is a >5-1/4" chassis that holds at least a dozen cards inserted vertically. As >far as I can determine from the manual, the I and II are the same (they use >all the same cards) except for the chassis, and neither one has any kind of >front panel. The front panel is emulated with an ODT like debugger in the >console firmware (a little like the LSI-11). > The Intercept1 was 6100 based and the InterceptII was 6120 basically the same thing from the programmers view with minor differnce. The I used 6100/6102 (PDP-8 with EMA) and the 6120 was the version that integreated the MEDIC part on one chip and also added PDP-8A stack instrucitons (they are really IOTs). The OS was OS278 flavor or compatable at some level with Fortran, FOCAL, ODT and PAL. they also had the PDP-8 tray of tapes kit for non disk or user rolled software. The disk system was PDP-8 RX01/RX8E software compatable. FYI: ODT is a PDP-8 creation that found it way to PDP-11 with some variation. The DECmate (early plain and DM1) and the base Intercept systems have much in common. > BUT, I've also seen pictures of something that looks like an Intercept I >(exact same chassis), but with a lights and switches front panel. Intersil >and Harris both published application notes, #006, that described the "6100 >Operator Console" and the application note even contains a nice photograph >of just such a machine. What model was this? Is it a unique model, was >there a front panel option for an Intercept I? The Intercept manual says >nothing about any kind of front panel. There were flavors of the backplane for turnkey systems without the front pannel (I think power and reset). The other flavor had the operators console (front panel) that was supported with the needed rom and pannel ram. You could also get the operators console for the bare backplane version. > Also, Intersil had their own disk (floppy disk, that is) operating system >for the Intercept I/II called IFDOS. I have a manual for IFDOS, but it >doesn't describe the floppy disk hardware for the Intercept. Was it a clone >of the RX01/RX8E? Have any copies of IFDOS media survived? Yep RX8E based system media and software compatable though differnt internally. The Sampler is very minimal but fun to expand, the Intercept-JR is on my wish list and the Intercept-1 or II were scarce but wouldn't mind having one to go with my PDP-8f, DMIII systems. Allison > >Thanks! >Bob Armstrong >

17 years, 11 months

1
0
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Intersil Intercept Models...

by bob＠jfcl.com

Intersil made several PDP-8 "work a likes" based on their 6100 chip, and I'm trying to figure out a few of the exact details. OK, I know this is really obscure, but I'm hoping somebody out there has used one or at least seen one :-) The Intercept Jr was the SYM or KIM like single board computer with a chiclet keypad and seven segment displays and powered by D cells. That one's easy to identify. However, after they bought out Intersil, Harris made a thing called the "Micro12" which was a little like the Intercept Jr but is clearly not the same. There are no D cells on the Micro12 for one thing, and more logic on board for another. I only have pictures of the Micro12, but no details. Does anybody know any more about this gizmo? And the "Intercept I/II Microcomputer Development Manual" (which I do have) has pictures and specifications for the Intercept I and II. The I is in a 3-1/2" chassis that holds four cards horizontally, and the II is a 5-1/4" chassis that holds at least a dozen cards inserted vertically. As far as I can determine from the manual, the I and II are the same (they use all the same cards) except for the chassis, and neither one has any kind of front panel. The front panel is emulated with an ODT like debugger in the console firmware (a little like the LSI-11). BUT, I've also seen pictures of something that looks like an Intercept I (exact same chassis), but with a lights and switches front panel. Intersil and Harris both published application notes, #006, that described the "6100 Operator Console" and the application note even contains a nice photograph of just such a machine. What model was this? Is it a unique model, was there a front panel option for an Intercept I? The Intercept manual says nothing about any kind of front panel. Also, Intersil had their own disk (floppy disk, that is) operating system for the Intercept I/II called IFDOS. I have a manual for IFDOS, but it doesn't describe the floppy disk hardware for the Intercept. Was it a clone of the RX01/RX8E? Have any copies of IFDOS media survived? Thanks! Bob Armstrong

17 years, 11 months

2
1
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Mac SE Flyback!

by trag＠io.com

> Date: Tue, 9 Sep 2008 07:48:39 -0700 (PDT) > From: Julian Skidmore <julianskidmore at yahoo.com> > Subject: Mac SE Flyback! > >> > ..the Mac's good, but the flyback Transformer burnt out a while >> You can have it, or just the flyback, for the cost of shipping from >> Switzerland. > but it's my best (and only) offer! They (compact Mac flybacks) are hard to find these days. I was kind of hoping your posting would cause someone to pop up and point, "That place over there has hundreds of them" or to discover that there is an alternative usable part number which is still available. The ringing silence probably means that they are as rare as they seem to be now days. Sigh. Jeff Walther

17 years, 11 months

2
1
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DEQNA/DELQA cab kit with DEUNA/DELUA?

by tiggerlasv＠aim.com

The DEQNA and DEUNA print sets have been on-line for some time. Don't forget the archives and links at: vt100.net/manx Here is the DEUNA link: http://vt100.net/manx/details/1,3463 T

17 years, 11 months

1
0
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Needed, GE Terminet 300 manuals

by g-wright＠att.net

I Have one of these that I would like to get going. Did not see much out there on these. anyone have some manuals stashed. - Thanks, Jerry

17 years, 11 months

1
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ECC on MFM drive

by aek＠bitsavers.org

> Yes. Indeed. I checked it again and it is the regular > CRC circuit with unusual initial value and polynomial. What are these values? They are not documented in the data sheet.

17 years, 11 months

1
0
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Files are Different Problem

by jhfinedp3k＠compsys.to

I spent 3 hours this morning attempting to figure out where to start looking. The problem shows up as a difference between files which are almost certainly identical - except in one copy which I am confident is different all of the time by the specified byte (caused at the time the copy was made). Rather than attempting to hide that this is current PC hardware, it is probably best to list: Hardware: Intel E8200 CPU (2.66 GHz), 2 * 2 GB memory in ASUS P5B motherboard with 2 * Seagate 320 GB SATA II hard drives Software: Windows XP with probably SP3 The problem shows up between 5% to 10% of the time with very large files of greater than 1/2 GB to 2 GB in total size. The command: COPY /B D:*.GHO G:*.GHx was used to create 4 files each time with x = A,B,C,D,E FC /B D:*.GHO G:*.GHx is used to compare the files 4 at a time. It takes about 2 1/2 minutes to compare the group of 4 files for a total of 5 GB being compared with 5 GB (which is why I said it must be current hardware). The result often (between 5% and 10% of the time) shows a single difference between the files at byte xxxxx35A (the xxxxx is random but the last 3 characters of the address are always the same) with the two hex characters for each byte being different by 1 bit: e.g. 22 vs 32 about 25% of the time with an extra bit 4 e.g. 94 vs 84 about 75% of the time with a missing bit 4 I probably performed between 75 and 150 FC commands during which about 200 comparisons were made. I collected about 15 cases when a difference was noted. I can also perform an MD5 valuation of each file. So long as the available memory is exceeded (relative to the size of the previous files that were just tested), the MD5 valuation takes about 40 seconds for a 2 GB file and the disk sense light is on the whole time. If the same file is repeated for the MD5 valuation, the disk sense light is always off and the MD5 valuation takes about 9 seconds. The MD5 valuation is probably incorrect between 5% and 10% of the time. Since repeating the MD5 valuation on a different copy of the same file provides a cross check, when what seems like an incorrect MD5 valuation appears, checking with a different copy will almost always (19 times out of 20) show the correct MD5 valuation, then when the MD5 valuation is redone on the same file, the probably correct MD5 valuation appears, i.e. different from the just previous MD5 valuation on the same file. However, if the MD5 valuation is done again without flushing the cached copy, then the same memory contents seem to be used each subsequent time yielding the same (probably incorrect if that was the situation) MD5 valuation from the last time that the disk drive was actually read. My assumption is that as the (now incorrect) byte was read into memory, one of the bytes of RAM (possibly the same one each time) gets an extra bit set or misses one of the bits being set - always that same bit 4 of course. Other reasons may also have caused the byte in RAM to be incorrect. However, once incorrect, it seems to stay the same until it is modified again. So it does not seem to be a problem with reading RAM. So (FINALLY) this is my question: If the cached copy (probably incorrect) of a hard drive file (which is used to perform the MD5 valuation) stays the same, what is the probability that it is a problem with RAM memory as opposed to a hard drive or controller error? Since the error suggests that it is a single bit causing the problem (the same bit seems to be either on or off), my intuition would seem to suggest that the RAM memory has a problem. However, since my hardware experience is minimal, I am asking for suggestions as to what can be done and the order they should be attempted: (a) Replace the RAM memory (b) Replace the disk drive(s) (c) Replace the motherboard with the controller problem (d) Something else I have not thought of I know that Tony Duell would want to fix the component, but I doubt that is even possible in this case. Does anyone have any different suggestions? Thank you for any help and please suggest any different tests that might help to locate or better identify the cause of the problem. Finally, just to make sure, does this problem constitute a serious difficulty which should (must?) be fixed before any actual use is made of this new system? Sincerely yours, Jerome Fine

17 years, 11 months

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Memorex/Telex terminals desperately needed for $$CASH$$

by INNERCTYCMP＠aol.com

Have available the following Memorex telex terminals (60) M/T 1476 A2/G2 with keyboard (3) M/T 080 no keyboard Thanks George Ics Computers PH#404.396.8672 **************Psssst...Have you heard the news? There's a new fashion blog, plus the latest fall trends and hair styles at StyleList.com. (http://www.stylelist.com/trends?ncid=aolsty00050000000014)

17 years, 11 months

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Does anyone have an electronic copy of the "OS/8 Software Support Manual"?

by djg＠pdp8online.com

I have OSSMA as a poster indicated and can scan it next week after VCF. The table of contents is very similar to OSSMB so its likely not that different. It doesn't obviously say what version of OS/8 it is for.

17 years, 11 months

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Any TI99 Folks out there?

by hpjimbondoris123＠dorisland.net

I agree the cartridge is required having many cartridges that is what I hate about it ONLY 1 cartridge jim

17 years, 11 months

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HP1600A + HP1607A Manuals

by iamvirtual＠gmail.com

Does anyone have a scan of the operating and service manuals for the HP 1600A logic analyzer along with it's sidekick, the HP 1607A? PDF is fine, but I would never turn down dead tree format. :-) Thanks! --barrym

17 years, 11 months

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ECC on MFM drive

by ra9yer＠yahoo.com

[skip] >> ECC. This is definitely not a CRC32. The algorithm in >> general looks like shift register for polynomial >> multiplication with polynomial equal to >> x32+x28+x26+x19+x17+x10+x6+x2+1 . > It's a polynomial code not unlike a CRC. (Note that a CRC > works as an error-correcting code, but aren't as good at > burst error detection/correction as codes designed for that > purpose.) It could be a BCH code. Older disk subsystems > on "big iron" used Fire code, but I'm not aware of that > even having been used on small Winchester drives. Yes. Indeed. I checked it again and it is the regular CRC circuit with unusual initial value and polynomial. Thank you. Alexander.

17 years, 11 months

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Any TI99 Folks out there?

by SUPRDAVE＠aol.com

Unfortunately, the disk manager cart is required. I did see one on ebay though. >In a message dated 9/9/2008 2:49:58 A.M. Eastern Daylight Time, snhirsch at gmail.com writes: >I have just added a TI expansion unit to my collection. It came with all >the proper internal modules, but there's a possibility that the Disk >Management plug-in cartridge (firmware) is missing. If the person I >bought it from is unable to find it, is there any workaround to not >having this? **************Psssst...Have you heard the news? There's a new fashion blog, plus the latest fall trends and hair styles at StyleList.com. (http://www.stylelist.com/trends?ncid=aolsty00050000000014)

17 years, 11 months

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Paper tapes+rubber bands+30 yrs = mess

by dkelvey＠hotmail.com

> From: pete at dunnington.plus.com ---snip---> > Then it's not very precise, because there is a difference. "benzine" is > a generic term used in some countries for roughly what I'd call petrol > and you'd call gasoline. "benzene" is a specific chemical compound > which may or may not be found in benzine, but as it's a known carcinogen > it's now banned in many places.> Hi I know how to make benzene. Take acetylene and pressurize it to 4 atmospheres and bang, you have benzene. With a catalyst, it can be done more sanely. Dwight _________________________________________________________________ Want to do more with Windows Live? Learn ?10 hidden secrets? from Jamie. http://windowslive.com/connect/post/jamiethomson.spaces.live.com-Blog-cns!5…

17 years, 11 months

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Ann Arbor: Free HP/Apollo

by silent700＠gmail.com

Not mine and too far for me, but it's good stuff for free: http://annarbor.craigslist.org/zip/834142216.html

17 years, 11 months

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Adaptec 2740A EISA (SE, no floppy) needs home

by jpeterson＠chinalake.com

2740A EISA, SE, non-floppy, free for the cost of shipping from US/01888 Cheers, Jim

17 years, 11 months

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SCSI drives, SCA adapters, DEC Serverworks Mgr 3.2/3.3 CD & Doc need homes

by jpeterson＠chinalake.com

Free for the cost of shipping from US/Boston 01888 - ST3600N 500 GB Apple branded - (2) Quantum Viking 2275W 2.2 G Wide SCSI drives - SCA adapters w/ power and ID jumpers (1) SCA F-68 pin F w/ term resistors (1) SCA F-68 pin F w/o term (1) SCA F-50 pin narrow and 68 wide F - Plextor PX-43CE SCSI CD Sept 1995 Internal Uses caddies which I am out of - Dayna Apple Easynet 10 base-T adapter - Dec HiNote VP500 User's Guide (software probably around too) - Dec Serverworks Manager Overview and Install Guide (1/3" think) with CDs for 3.2 and 3.3 (Jan and April 1998) Cheers Jim

17 years, 11 months

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wang 1220 photos & info

by frustum＠pacbell.net

About three weeks ago I asked whether a shipping quote I received was reasonable or not. The item arrived today, so I figured I'd tell how the story turned out. Bradley Slavik had a Wang 1220 that he wanted to give up to get back some room. He kindly gave me the machine, and even dropped it off at my sister's house. Then I had to find a way to get it from Chicago to Austin. Background: Wang shipped the first dedicated word processor in 1971, the Wang 1200. The one I received is a slightly later model. I received two suggestions for shippers: Craters & Freighters (I already knew about them) and Novas (gonovas.com). Both gave similar quotes, but this particular Novas office just made a bad impression. They would say they'd call back that afternoon, and then wouldn't, and I'd call them the next day, and they'd say, Oh, sorry, that was bad and I rarely do that. Once is understandable, but three times in a row doesn't make a good impression. So Craters and Freighters it was. They picked it up two Fridays ago, within 24 hours of me giving them the business. The following Tuesday they said it was crated and ready for shipment. Last Friday I got a call from the subcontracted shipper that they were in Texas and would deliver it today, Monday. They gave me a 3 hour window and delivered it in that window. The box was in good shape. Once I opened it I could see that the shipping container was well made and I had gotten my money's worth. After half an hour of pulling staples and folding large sheets of cardboard, I had my very own Wang 1220 word processor. It was born on Aug 1, 1973, making it a bit more than 35 years old. It cost $495 for the pick up, boxing, and delivery. While it has been rare for me to spend that much on any vintage equipment, I am happy with the way it worked out. I've posted a few photos, in small (50kB 640x480) and large (1MB 2300x1700). Eventually I'll have a web site, but this will have to do for now. http://www.thebattles.net/wang/1220/small http://www.thebattles.net/wang/1220/large Things to note, in no particular order: The 1220 is the second generation 1200. The first came out in 1971. Both systems used modified Selectrics for keying and printing. There is a famous story where Wang alleges that IBM purposely sabotaged the OEM'd Selectrics to damage Wang's reputation with customers. In any event, the 1200's were notoriously unreliable. A few years later, Wang took another shot at it with an 8080 & CRT based word processor system, which ended up making Wang quite profitable for a time. the "05-rear.jpg" photo shows the microcode program store. The microword is 44b wide, and the ALU is bit serial. The whole electronics package is on a hinged frame. You can see only the rear of the backplane the photo, but there are a handful of cards on the other side implementing the CPU. The microcode store is 2K words of 44b. The board holding the microcode also has a grid where diodes can be soldered in to allow patching up to three arbitrary words of the ROM. Later on they introduced a board that allowed for 12 patched words. There is no way to load software into the machine -- it only runs what is in its ROMs. The CPU's memory is all of 256 bytes. 100 bytes are used to hold the current record being edited. The rest contains variables state that the microprogram uses to track things. "04-hood.jpg" shows that the noise damping foam has all disintegrated. The first thing I did was to get a putty knife and scrape it all into the garbage. This hood sits over the Selectric, but the Plexiglas hinges up and out of the way for use. There are two cassette decks on top. they are used in various ways, but one common way was to have the source version on one tape and as the typist makes corrections, the edited copy goes out to the other deck. the system allowed editing in place, but as the tape format consists of nothing but a train of fixed length 100 byte data blocks, in-place edits could neither insert nor delete lines. Another use was to have a template document in one deck and a list of contacts in the second deck, and the machine would print out form letters customized by the contents of the second tape. The 09-warning.jpg sticker shows that the older machines used rope ROMs. This is a technology whereby word lines were snaked through 44 toroid cores. By having a given word line wind a given core or not it would be sensed as a 0 or 1. This model uses mask ROMs. Luckily, I happen to have schematics for this machine. A few years back I was loaned a box of schematics to scan for the Wang 2200, but it also contained schematics for some other Wang products. At the time I had no thought of having a 1200 (I didn't even know any still existed), but now I'm glad I went and scanned everything. Who knows, maybe some day I'll run out of things that need to be done to my existing emulators and I'll write one for the 1220. It would be the world's most boring emulator, though. My office now has a strong aroma of whatever oils and greases that were applied to the Selectric probably 20 years ago. I'm amazed how volatile it still is. Finally, my 2200 website has a 6 page color brochure touting the amazing features of the Wang 1200 family (6 pages, 1.5 MB): http://wang2200.org/docs/Wang%20Word%20Processing.pdf The collage of very early 70s people on the cover of the brochure is worth the price of the download.

17 years, 11 months

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