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

by lproven＠gmail.com

I thought that this might be of interest on here... -- Liam Proven ? Profile: http://lproven.livejournal.com/profile Email: lproven at cix.co.uk ? GMail/G+/Twitter/Flickr/Facebook: lproven MSN: lproven at hotmail.com ? Skype/AIM/Yahoo/LinkedIn: liamproven Tel: +44 20-8685-0498 ? Cell: +44 7939-087884 ---------- Forwarded message ---------- From: Pam Tcath <ptcath at gmail.com> Date: 30 December 2013 19:56 Subject: FS: Workgroup Server 95 To: lemswap at googlegroups.com For sale is a Workgroup Server 95, 16Mb RAM, 1.2Gb HDD, Floppy Drive, DAT Drive running A/UX 3.0.1 and OS7.0.1. This is a RARE machine in Excellent Condition. Everything works. $ 375.00 postpaid CONUS. PayPal ONLY. Pictures on request. Pam Tcath Cranston, RI 02910

12 years, 6 months

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SGI memory

by sales＠elecplus.com

I have these memory modules, no way to test. 2 are Silicon Graphics branded, no visible part numbers. 6 are Kingston branded, pn KSG-02/64. I think these go to an SGI O2 machine? $5 each, take them all, plus $6 shipping. Cindy Croxton Electronics Plus 1613 Water Street Kerrville, TX 78028 (830)792-3400 phone (830)792-3404 fax AOL IM elcpls _____ No virus found in this message. Checked by AVG - www.avg.com Version: 2014.0.4259 / Virus Database: 3658/6961 - Release Date: 12/30/13

12 years, 6 months

1
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LA120 PSU fault

by b4＠gewt.net

Afternoon, I've managed to acquire an LA120! Woohoo! However, it had some issues...as was discussed when I got it. ;) I've replaced the blown fuse, the there is continuity for the pico fuse on the PSU...but I have no idea if that indicates it works or not. The only thing that runs is the fan. What are some test points I can try? Also...what is the value for the picofuse? I have 125V 1.5A fuses...but I think it needs higher current. -- Cory Smelosky http://gewt.net Personal stuff http://gimme-sympathy.org Projects

12 years, 6 months

3
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Message from BillDeg

by billdeg＠degnanco.com

Effective Immediately After 16 years of use, it's time to retire billdeg at degnanco.com. Henceforth all emails to billdeg at degnanco.com will be deleted. If you wish to contact Bill by email, please use billdeg at buzz1.com B

12 years, 6 months

1
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Classiccmp prop sighted

by ethan.dicks＠gmail.com

Was just watching SG-1 episode "Tin Man" - there's a door opening lever that's an RL02-type disk pack painted silver (can't tell which variety under the paint). Just amusing to spot. -ethan

12 years, 6 months

2
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Island of misfit toys (or classic computers)

by ittybittybytes＠gmail.com

Rudolph and Santa has the island of misfit toys. I have the island of misfit or slightly broken classic computers on eBay 1. green screened AT&t 7300 2.Vt100 minus keyboard (powers up but screen does not go on) 3.HP 9534; powers up, attached monitor works OK but only posts intermittently. I suspect either something loose or faulty power supply. The HP and the Vt will go up tomorrow around 10 am PST http://www.ebay.com/sch/tcp1022/m.html?item=251410916240&ssPageName=STRK%3A… These were items I had on my to do list to fix, but time has run out. I am also giving a head up in that I'm selling my DECSystem 310, which is a pdp8/a housed in a metal office desk. I comes with a circa 1974 Tec 440 terminal, an LA36 and an RL01.as well as the housed RX01(2)? I'm not selling this on eBay but to any listers who might be interested. I'll post more info as soon as I take some pics and gather it all together. It will have to be freighted or picked up. I can hold it for 4-6 months if you want to come to SE AZ to pick it up (near Tucson)

12 years, 6 months

3
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MFM prototyping

by robert.jarratt＠ntlworld.com

I need to find a way to interface a breadboard prototype to an MFM connection on a MicroVAX 2000. The cable I have is the type that connects to tracks on a two sided PCB (like the edge of any PC card that plugs into an ISA, or PCI slot), I don't know if this has a name. Is there anything I could search for that would give me small 2-sided PCBs with the tracks on each side and an easy way to connect wires from the breadboard? Another alternative would be to find single-pin sockets for the wires so that I could connect wires directly to the IDC header on the MicroVAX 2000 system board on an individual basis. I have searched for these but not found anything, do these things have a name? I suppose I could just buy or make a simple 60-way ribbon cable and push the wires from the breadboard into the socket on the ribbon cable. Any other ideas? Regards Rob

12 years, 6 months

2
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KASIM VER 0.2 19-JAN-77 - DEC's own KA10 simulator?

by bob＠jfcl.com

I was looking at some of the diagnostics on the KLAD pack http://pdp-10.trailing-edge.com/klad_sources/index.html and I notice that this one (DAKAA - basic instruction test) has a bunch of interesting output at the end of the .SEQ file http://pdp-10.trailing-edge.com/klad_sources/01/klad.sources/dakaa.seq.html The first part is just the diagnostic operating instructions and the second part is the MACRO-10 listing, but at the end there's the output from what appears to be a KA10 simulation. The header on each listing page says "KASIM VER 0.2 19-JAN-77" - did DEC actually write a KA10 simulator ? And it's apparently more than just a simple instruction simulator too, because for each instruction there's a complete trace with all the internal time states and internal register contents for the KA10. It must be an attempt to model the internal architecture of the KA CPU. Does anyone know any more about this program? Does anyone have a pointer to the source for it? Tantalizingly there's a KASIM.SAV on the KLAD pack, but that's all. Bob

12 years, 6 months

2
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Loading ZQRCH0/XXDP on PDP-11/23 or PDP-11/01

by b4＠gewt.net

Evening... I'm fighting with trying to get my disk formatted so I can use my PDP-11s. ;) Tape records are: 0 zrqch0 1 zrqah0 2 zrqch0 3 zrqah0 Opening port /dev/ttyUSB0 .... Port open ? Opened zrqch0 read-write rrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrr And it stalls after that many R and goes no further. I have no alternative means to boot XXDP on this system...my only option is vtserver until I get a drive formatted. -- Cory Smelosky http://gewt.net Personal stuff http://gimme-sympathy.org Projects

12 years, 6 months

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Question re: DMK2IMD

by snhirsch＠gmail.com

I'm attempting to convert a TRS-80 DMK image to ImageDisk format in order to write out a real floppy. The original was 80-track, DS, DD and indeed the sdltrs emulator concurs and can catalog the image without incident. The DMK2IMD utility converts it without complaint and reports: 80X6400 DSMD 250k data rate assumed But, when I fire up IMD and write it out things stop after track 39 and tell me that 2880 sectors have been written. That's the correct number of sectors, but they should be spread over 80 tracks. Clearly I'm missing something, but am not sure exactly what. The drive is 80-track DSQD and data rate is 250Kbps. I am not set for double-step and imd believes (correctly) that the drive is an 80-track unit. (I have also tried this with a more common 5.25" HD 1.2M drive - using 250k-->300k rate conversion - but the same thing happens) Steve --

12 years, 6 months

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Free in Noord-Holland, Netherlands: 2x Tandem Himalaya K200, peripherals

by theodric＠gmail.com

Free to a good home: 2 Tandem Himalaya K200 mainframes (circa 1993, according to the date stamps inside), a disk array, some spare disks, two terminals, assorted system cabling, spare internal cards and spare internal disks. The fellow I got them from worked for NYSE Euronext, and said that they were used there before he acquired them through official channels after they were decommissioned. I have a printout of an e-mail to that effect, which also includes instructions for bringing them up?something I?ve never tried to do. They take a couple C19 power cords (provided) on an 8A circuit, and are reportedly working. They are large (76x102x53cm) and heavy (two strong people can lift one, just). Location is Noord-Holland, Netherlands. If you?re interested in collecting them or you are willing to arrange your own pallet collection by courier, please contact me off list. Jeremy

12 years, 6 months

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[Mark@Misty.com: [rescue] HP 715/50 and 715/80 free for local pickup]

by Mark＠Misty.com

Hi, I tried the rescue lists, but maybe these are old enough for cctalk. HP 715/50 and 715/80, one HP chicklet keyboard, mouse, and a collection of HP CDROMs. These are nice and clean, include internal CDROM drives, some memory in one of them. Sorry, I used the SCSI drives from these for another project. At one point I did have one booting before then from install CDROM and from a SCSI hard drive. These are free, for local pickup, near Plymouth Meeting, PA, United States. I might be persuaded to pack and ship these if anyone has anything I am looking for in trade: - An intact DEC BA23 front, back, and floor-stand base-plate thing. - A DEC Q-Bus M7516 DELQA ethernet interface. - Other BA23 pdp11 q-bus related stuff. Mark -- Mark G. Thomas (Mark at Misty.com)

12 years, 6 months

2
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AN/AYK-14 CDC Computers

by michael.99.thompson＠gmail.com

The RICM just received three AN/AYK-14 CDC computers as a donation. It looks like they each contain 4x 32k x 18-bit Core Memory Module, Memory Control Module, General Processor Module, Processor Support Module, and an I/O board. Anyone know about these systems? -- Michael Thompson

12 years, 6 months

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cctech Digest, Vol 124, Issue 31

by michael.99.thompson＠gmail.com

> From: Al Kossow <aek at bitsavers.org> > Date: Sun, 29 Dec 2013 07:38:23 -0800 > Subject: Re: RFC Ethernet Bus Interface V1 > > So I'm back to a couple of bus translator PCBs with the actual microcontroller and FPGA on separate mezanine > cards so whatever the silicon is that the bus translators stay the same. At least that's the theory. I used this: http://www.emcraft.com/products/133#starter-kit plus some bus translators to emulate a paper tape reader on a PDP-8/L. I will use this one: http://www.emcraft.com/products/133#overview next time because it has a lot more I/O. -- Michael Thompson

12 years, 6 months

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Message from BillDeg

by billdeg＠degnanco.com

Effective Immediately After 16 years of use, it's time to retire billdeg at degnanco.com. Henceforth all emails to billdeg at degnanco.com will be deleted. If you wish to contact Bill by email, please use billdeg at buzz1.com B

12 years, 6 months

1
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DEC RX02 Catweasel (.DMK) image to SIMH

by shadoooo＠gmail.com

Hello. I have an image file of an DEC RX02 diskette obtained with Catweasel (.DMK). I would use this image on SIMH, but I have no clue about the way to convert it to SIMH format. Any idea? Thanks Andrea

12 years, 6 months

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HP PA-RISC Linux Developers needed!

by xmechanic＠landcomp.net

Hiya Folks, First off, Merry Christmas and a Happy and healthy New Year to everyone here! I've been working with a couple of developers during the last few months to get 3 of my HP PA-RISC boxes back up and running with Debian HPPA Linux. Debian dropped support for hppa a few years ago, due to lack of certified developers (DD's), but a few die-hards managed to keep it going outside of the normal repositories at http://www/parisc-linux.org . We would really like to see the port listed as an active architecture again in the Debian repos, but in order to do so, they require at least 5 *active* developers to maintain the port. Thanks to Helge Deller (Germany), John David Anglin (Canada), and a few custom kernel re-writes, we now have a stable 32 & 64 Bit SMP kernel (currently at 3.11-1 'unstable' and 3.11.2 'experimental'), and we have 3 buildd servers running on 2 different machines (at my location), generating up-to-date packages for download at http://www.debian-ports.org . Dave Anglin is currently working on setting up another buildd on one of his machines to balance the load out a bit. :) Bottom line is, people can now 'debootstrap' new installs on their hardware with a basic 'lifimage' CD available for download at: http://ftp.parisc-linux.org/debian-ports/unstable-boot-image/lifimage and a network connection, to pull the necessary packages from debian-ports.org. We are in desperate need of additional developers familiar with working with the older HP PA-RISC hardware, and know something about coding for this architecture in Linux, and especially somebody that may know a bit about back-engineering some of the HP graphics cards to support Xorg and a regular GUI desktop. As it stands, we only have graphics support for the rare, and usually expensive, ATI FireGL-UX PCI-X type cards, and it's still a bit buggy. So dig out your old HP RISC boxes and dust them off, and see if you can get them loaded up and running, and more importantly, if you're interested in having an up-to-date Linux distribution that actually makes these bullet-proof servers and workstations usable again, contact me off-list and I'll get you connected with Dave Anglin and/or Helge Deller, two of the main forces in this project at the moment, and they can get you pointed in the right direction, if you're up for some development work! You can see a bit of our current progress (mainly with my original Visualize J6750 workstation), and two (new to me) machines that were donated by a former developer in the project, in my website hosted on the J6750 along with 2 of the buildd servers, a full, *current*, LAMP server to handle the website, and numerous other little projects, all running on 2 - 875mhz. PA-RISC processors and 7 gb. or so of RAM. You can see that here: http://www.landcomp.net:884/wp/ along with my newly acquired RP-2470 (A500) server, and another J6000 series workstation. We're still deciding what kind of tricks we want to make it do, so it's offline at the moment, but ready to go, for graphics development or whatever. :) Happy Holidays, and we hope to hear from you soon! :) Dave L. -- Dave Land Land Computer Service xmechanic at landcomp.net ICQ: 676030523

12 years, 6 months

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Denver area oldies, especially Apple/Mac

by sales＠elecplus.com

If you live in the Denver area, there is a recycler that has lots of old Apple/Mac stuff. Contact me off list for address. Cindy Croxton Electronics Plus 1613 Water Street Kerrville, TX 78028 (830)792-3400 phone (830)792-3404 fax AOL IM elcpls _____ No virus found in this message. Checked by AVG - www.avg.com Version: 2014.0.4259 / Virus Database: 3658/6956 - Release Date: 12/28/13

12 years, 6 months

1
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Amiga 4000 power supply specs

by james＠attfield.co.uk

Message: 4 Date: Wed, 25 Dec 2013 21:25:16 -0500 From: Joe Giliberti <starbase89 at gmail.com> Subject: Amiga 4000 power supply specs Hello I have an Amiga 4000 040 with what I think is a fouled up power supply. I am looking for info as to what voltages should be where so i can determine if the PSU is the problem. Any help is very much appreciated. Thanks Joe ------------------------------ According to the schematic there is a power connector (CN160) which has the following pin-outs: Pin 1: FAIL signal (470R pull-up to +5v) by plug chamfer Pin 2: -12v Pin 3: +12v Pin 4: Ground (opposite pin 1) Pin 5: Ground Pin 6 +5v (1.8A poly-switch protection, opposite pin 3) I don't think the schematic is model-specific. Good luck! Jim

12 years, 6 months

1
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WTD - MFM or RLL 5.25in Half Height drive

by classiccmp＠philpem.me.uk

Hi guys, Does anyone have a spare 5.25-inch half-height MFM or RLL ("ST506" interface) hard drive? I'm trying to resurrect an AT&T UNIX PC, but its Microscience HH-1090 drive is basically a brick. I can format it with the Diagnostics disk, but the install floppy falls down when it tries to 'mkfs' the root filesystem. Running mkfs manually produces a "write error" message. Mapping the bad block doesn't help in the least, and the diag floppy reports 76 bad block table (remap) entries when I run the S4TEST (expert mode) disk diagnostic... Anything <= 1400 cylinders and 8 heads would work fine (though I could always lie to the machine and specify a lower head and cylinder count) but ideally I need (cylinders * heads * 16 * 512) to be >= 40MB. There's a bit more about this requirement and why here -- http://unixpc.taronga.com/faq/part2/faq-doc-6.html The machine may have a WD2010 controller (I'm not sure, I need to crack 'er open and check) but it certainly doesn't have the P5.1 upgrade PAL. Thanks, -- Phil. classiccmp at philpem.me.uk http://www.philpem.me.uk/

12 years, 6 months

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Amiga 4000 power supply specs

by starbase89＠gmail.com

Hello I have an Amiga 4000 040 with what I think is a fouled up power supply. I am looking for info as to what voltages should be where so i can determine if the PSU is the problem. Any help is very much appreciated. Thanks Joe

12 years, 6 months

5
5
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Paper or cardboard IBM 360 models

by buddy.holman＠gmail.com

Folks, I am teaching a course on the history of computing. I am looking for cardboard or paper models of the IBM 360 computing system to help my students visualize what a computer center of the 1970s would look like. Does anyone know of a source for these models? Thanks! Ellis

12 years, 6 months

11
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Siemens PT80 info

by hp-fix＠xs4all.nl

After a trade session with Henk, I got a Siemens PT80 teleprinter ;) I'm trying to find some info on the net but there is very little info about the PT80, the PT80i is mentioned a lot because it was one of the first inktjet printers. But info about the PT80 is very sparse, so I'm looking for some kind of service and installation info so I can connect and use the 'beast'. I know it uses a current loop connection, but the connection board has more connection points then used at the moment, and I reverse engineered the polarity and Tx and Rx connections, but I'm also looking for the possibility to address the puncher and punch reader from outside the PT80. So if one of you has info.. -Rik

12 years, 6 months

1
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trs-80 model 3 question

by bbrown＠harpercollege.edu

I have a trs-80 model III. It seems to work ok except that some of the characters on the screen are wrong...the computer works even though some of the characters on the screen are wrong (and they seem consistently wrong...a "?" always displays as the same bad character. Does this sound like video ram? Or something else? Any troubleshooting info out there? Thanks. -Bob

12 years, 6 months

4
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Wiring up an LPFK

by ethan.dicks＠gmail.com

Hi, All, Years after we were discussing the LPFK in detail, I have managed to be home long enough to find mine and hook them up. I've also dug into the innards a little bit to understand how to wire up a cable, and it brings me to a question... what is pin 4? According to the old discussions, pin 4 was described as +5V or "+5V through a pullup" since there was clearly not a direct path from pin 3 to pin 4. My tracing of the board shows me that pin 3 is indeed +5V in, but pin 4 is connected to +5V through a signal diode, *and* to ground through a diode, *and* (through a small resistor) to both inputs on one of the gates in the 74LS00 whose output is RESET. So... it looks like a diode-clamped input for resetting the 8031. My question is, given that one diode drop is 0.7V (I don't think these are zeners, at least they are in orange glass packages with a yellow stripe, not a silver package with black stripe and numbers like the zeners I recognize), can you safely put more than 6V on this input or not? i.e., is it meant to be connected to RTS or DTR so that the host can easily reset it? I know more modern serial ports (those without 1488s and 1489s, for instance) don't often hit +/-12V, but I know nothing about what the LPFK was supposed to connect to, so I can't guess what serial voltages the LPFK would have to accommodate. Does anyone have a pinout or a good description of the original IBM cable? To connect up my LPFKs, I bisected an old 8-pin DIN cable and added a DE9, and for the interface, hacked a Keyspan-brand RS-232 dongle to sever RI from pin 9 and to bring up +5V from the USB connector. I've seen other serial devices (like those used with a POS) that have power-over-serial on pin 9, so I know it was commonly done for embedded devices, but I can't seem to find a good name for the practice (I was planning on marking altered devices with "P9" so I know that pin 9 is powered. It's fun finally getting some practical experience on the real hardware and to see the sample code I wrote five years ago for Phil Pemberton's library in action. Thanks for any info, -ethan

12 years, 6 months

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7
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Why did microcomputers die off?

by bearnold＠outlook.com

I think I'm missing something. For the sake of differentiating between, I'm going lump the Altair's, SWTPC, etc. into the Microcomputer group, Apple II's Atari's etc. in Home Computers, and IBM PC and compatibles in IBM PC group. I have a question. Why did microcomputers die off? I've been thinking about that this morning and I seem to be missing something. To my experience, the microcomputers started to really fade out around the time home computers got big. But to me these are two different market segments with some, but not a whole lot of overlap. Had the microcomputer market hit saturation by that time? That's the only thing I can come up with. But then what sustained business until the IBM PC steamroller came along? I guess it was mostly the unglamorous and unreported on microcomputers, as I don't think the Apple II got /that/ deep into businesses (other home computers had next to no penetration). Ah, hmm, maybe I am over generalizing the microcomputer group. Maybe it should actually be split into two, the hobbyist micros and the business micros? While they tended to use the same machines, the focus was different I think. That would tend to agree with my supposition above that the hobbyist micro market hit saturation, and the business micro market quietly chugged along until steamrolled. And that would imply that the home computer group had next to no impact on either of the microcomputer groups. Or am I missing a piece, or two, to this puzzle? Thanks, Brad

12 years, 6 months

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Merry Newtonsday

by ard＠p850ug1.demon.co.uk

Merry Newtonsday, or if you prefer, Christmas, Midwinter, Winter Solstice, Yule,... to all members of this list and their families. -tony

12 years, 6 months

5
4
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Experience and capabilities of Burroughs Michigan Laboratories, SAGE/BUIC/MORE!

by COURYHOUSE＠aol.com

My old SAGE/BUIC Buddy email me off list list your email found good book in the stacks "Experience and capabilities of Burroughs Michigan Laboratories, Inc., Ann Arbor laboratory." Ed Sharpe - _www.smecc.org_ (http://www.smecc.org)

12 years, 6 months

1
0
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RFC Ethernet Bus Interface V1

by jgevaryahu＠gmail.com

On 22 Dec 2013 Al Kossow wrote: > I'm feeling the same way this morning trying to get a Catweasel to work in Linux. > It's just special that they stole someone else's PCI ID for the MK IV board. I'm not sure they stole it so much as randomly made up a pci uid/vid pair, which happened later to be used for that isdn card. Or its possible that the pci interface chip on the cw mkiv was a large overstock of china-bought chips which had been masked for the card. I have no idea. It can be worked around by forbidding load of the module for the isdn card in linux. -- Jonathan Gevaryahu jgevaryahu at gmail.com jgevaryahu at hotmail.com

12 years, 6 months

1
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A Short History of Computers in the Movies: Panel Lights, Spinning Tapes, and Lab Coats

by christian_liendo＠yahoo.com

Ok article http://blog.smartbear.com/geek/a-short-history-of-computers-in-the-movies-p…

12 years, 6 months

1
0
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Alphaserver 1000 diagnosis?

by dseagrav＠lunar-tokyo.net

(I think I asked this once before, but I can't remember the result and I can't find the thread in the archive) I have an Alphaserver 1000 that I would like to resurrect. It periodically hangs or reboots. When it reboots the error is usually "Machine check while in palcode". When it hangs, the hang is so severe the halt button does not work. Either way, it always happens within 20 minutes of booting. I ran all of the diagnostics you get by moving the CPU card jumper (cache memory tests, RAM tests) and they run for an hour or so with no error. (I am assuming the diagnostic halts on error instead of just looping again, is that correct?) During the course of these I moved the jumper to the wrong place and wiped out SRM, so I had to reload SRM from floppy using the failsafe loader. That worked. The SRM diagnostics will also run for as long as I want without error. Does anyone have any idea what's wrong here or is there some kind of XXDP-like thing I can run that will better test the machine?

12 years, 6 months

4
3
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Commodore Pet Video. Take 2

by terry＠webweavers.co.nz

More video revision madness. My Commodore PET, now in high definition. http://youtu.be/bBJNSX_DKvo Terry (Tez)

12 years, 6 months

1
0
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installing 2.11BSD on a pdp11/53

by Mark＠Misty.com

Hi, I've been making progress with my pdp11/53 project. Once I figured out how to get into Emulex F.R.D. mode from ODT, I was able to configure, format, and test my QD01 connected MFM hard drive. I'd like to try installing 2.11BSD. Although I've got a TK50 drive and controller, I don't have any tapes, or anything else here that can write to them. I have a Quantum DLT8000 SCSI drive, and an Emulex UC07 scsi controller. I was able to set the UC07 as the first TMSCP controller, and F.R.D on the UC07 reports the DLT8000 drive, and tests writing and reading to tapes loaded in the drive with no errors. I followed the 2.11BSD setup.ps and HOWTO file instructions to create a tape with dd, using a Sun Solaris SPARC server connected to the DLT8000. It seems silly trying to install an OS on a 70MB MFM drive from an 80GB DLT tape, but that's what I've got to work with so far, and my UC07 can't do TMSCP and MSCP at once, so no SCSI disks if I'm installing >from SCSI tape. Back on the 11/53, if I try to "BOOT MU0", the DLT tape spins for a few seconds encouragingly, but then I get: KDJ11-D/S E.03 Media not bootable Should I be able to boot the 2.11BSD boot block on an 11/53 from a TMSCP connected SCSI tape drive? The BSD setup.ps file includes bootstrap monitor examples for TM and TS tape drives. Do I need to use one of these instead of the normal 11/53 bootstrap ROM? Or, maybe there is something about block sizes and writing the tapes from Sun Solaris SPARC dd that means they aren't compatible? Alternate paths I could take might be installing 2.11BSD using VTserver, or maybe using PUTR or an emulator to set up OS directly onto a SCSI hard drive or zip drive for use on the 11/53, but I liked the idea of doing it with tape if I can figure out how. I have successfully booted the 11/53 >from an RT11 RX33 floppy I created with PUTR, for what it's worth. Mark -- Mark G. Thomas (Mark at Misty.com)

12 years, 6 months

15
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Heath H-11 (was Re: Why did microcomputers die off?)

by ethan.dicks＠gmail.com

On Mon, Dec 23, 2013 at 2:53 PM, steve shumaker <shumaker at att.net> wrote: > FWIW, an un-built H11 in original carton with several extra cards just > went for a single bid of $500 on EPAY over the weekend :( Wow! That sounds cheap. I have a built-up one that was hacked half-to-death by its first owner, a former boss of mine (he turned it into a hex-wide and made his own CD-interconnect for an RLV11) with at least one unsoldered serial card (no need to solder it since I have real DEC cards and they have standard, not Heath, pinouts to connect to the outside world). As an H-11 it works just fine even after I undid its previous "expansion", but I've never gotten the H-27 to boot on it (it works with an RXV21 and RX02 or with an RLV12 (now) and RL02). -ethan

12 years, 6 months

3
2
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MC68000 MOVMEM.A fast memory copy

by nw＠retrocomputingtasmania.com

On Tue, Dec 24, 2013 at 6:04 AM, Peter Corlett <abuse at cabal.org.uk> wrote: > If you had contrived the hardware design to have suitable incomplete decoding, > you could have exploited the movem hack that copies 56 bytes in 72 cycles, > which would give you north of 5MB/s on a 7.09MHz CPU. Thanks for the reminder, here is a reference for the curious, although this one does 48-bytes per loop cycle: https://groups.google.com/forum/#!msg/comp.sys.amiga.programmer/LpdAw8SZcdY…

12 years, 6 months

2
1
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cctech Digest, Vol 124, Issue 23

by michael.99.thompson＠gmail.com

> > From: Al Kossow <aek at bitsavers.org> > To: cctalk at classiccmp.org > Cc: > Date: Sun, 22 Dec 2013 09:08:12 -0800 > Subject: Re: RFC Ethernet Bus Interface V1 > On 12/22/13 8:43 AM, Al Kossow wrote: > >> Here is a first draft. Anything wrong/missing architecturally? >> >> > The one thing that I didn't think of was not handling 18 bit data transfers > on Unibus DMA, though now that I've thought of it adding the data parity > bits > to the buffering wouldn't be a big deal even if there wouldn't be any code > behind it. > > That is only an issue for two systems I can think of, KS10s and > Unichannel-15s.. > <snip> > Now, as usual whenever I think about this, I'll spend the next several > weeks > trying to get a tool chain running to actually get "hello world" running on > an ARM proto board or the equivalent on an FPGA board. Maybe it'll actually > work this time (I think I've tried doing this for several years running now > and gave up when after buying a prototyping board I couldn't get anything > to work). > >> >> Having an 18-bit Unibus interface for the KS10 is a great idea. You could easily put enough RAM on the board to emulate several Massbus disk drives and save the disk images on flash. Last year I made a Posibus Peripheral Emulator with an Actel SmartFusion FPGA/ARM http://www.ricomputermuseum.org/Home/equipment/pdp-8-l/making-a-posibus-per… I started with an Emcraft SOM module, used the free FPGA tool chain from Actel, and the FPGA and uC Linux image from Emcraft. Linux was running on the SOM when it was first powered up. http://www.emcraft.com/products/255 All I needed to to was make an interface board from the 3.3V logic in the FPGA to the Posibus in the PDP-8/L. My idea was to put the time sensitive logic in the FPGA and do everything else with a Linux device driver and application. You could do the same and use something like an M9014 module to connect to the Unibus. Once the circuit was debugged you could make a PCB that plugged directly into the Unibus and had a socket for the FPGA SOM. Since all of the Unibus logic is in the FPGA the single board could respond to many Unibus addresses and then emulate multiple peripherals at the same time. With a little FPGA logic change, and a bit of coding, you could run SIMH on the ARM in the FPGA and then emulate just about any CPU. -- Michael Thompson

12 years, 6 months

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Source for MB8866

by snhirsch＠gmail.com

Does anyone have a source for a Fujitsu MB8866 FDC chip? I've found some mention of it being a direct substitution for a WD1791, but the latter does not cooperate in this machine. Steve --

12 years, 6 months

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Free (only pickup) 2 HP9000 D-serie systems

by hp-fix＠xs4all.nl

Dave, Don't worry they've been spoken for. The new owner will pick them up tomorrow. And it's not the last parisc machine I have. But I find myself owing a lot of equipment which only future seems te be occupying storage space. So those have to go.. -Rik -----Oorspronkelijk bericht----- Van: "Dave Land" <xmechanic at landcomp.net> Verzonden: ?23-?12-?2013 08:43 Aan: "On-Topic and Off-Topic Posts" <cctalk at classiccmp.org> Onderwerp: Re: Free (only pickup) 2 HP9000 D-serie systems On 12/20/13 2:27 PM, Rik Bos wrote: > I've two HP 9000 D-series systems one D380 and the other a D280 (I think) > > Those are pa-risc systems running HP-UX 11i one is a dual processor system > the other has 1 proc. > > The D380 is loaded with a video card and several other cards. > > With some drives and other goodies, free for pickup only. > > Systems are located in the Netherlands near Groningen. > > If no one wants them I'll scrap them. > > > > -Rik > > > > > > > Man, I'd take them in a minute if I was in NL. You realize of course you could load these with HPPA-Linux now that we're getting the debian-ports archive refreshed with recent builds. :) See: http://parisc-linux.org or my site at http://landcomp.net:884/wp/ to see what has been going on recently. :) Hope if they are salvagable, you don't throw them out! Dave L. -- Dave Land Land Computer Service xmechanic at landcomp.net ICQ: 676030523

12 years, 6 months

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Apple Duo 230 Battery?

by earl＠baugh.org

Does anyone know of a source for a battery for an Apple Duo 230 laptop? I've got a Duo, and got it working, but no battery (works on AC). Ultimately, I'd like one battery "for show" that's all original (don't care if it works or not) and another I can "crack open" to restore/repair for actual battery power use... I've been watching various outlets for a while, and simply haven't seen/found any.. Thanks. Earl

12 years, 6 months

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Free (only pickup) 2 HP9000 D-serie systems

by hp-fix＠xs4all.nl

I've two HP 9000 D-series systems one D380 and the other a D280 (I think) Those are pa-risc systems running HP-UX 11i one is a dual processor system the other has 1 proc. The D380 is loaded with a video card and several other cards. With some drives and other goodies, free for pickup only. Systems are located in the Netherlands near Groningen. If no one wants them I'll scrap them. -Rik

12 years, 6 months

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Lobo Max-80 Question

by billdeg＠degnanco.com

> > Does anyone know exactly what was in the Lobo branded "SASI" external hard > drive? I've managed to convince my Max-80 to talk with a 10MB MFM drive > behind an Adaptec ACB-4000 bridge controller. It formats and verifies > without a complaint, accepts bad sector information and creates a working > CP/M volume. But, for some reason I cannot get it to boot from the hard > disk. > > It won't be the end of the world if I have to cold-start from a floppy, > but my curiousity is getting the better of me. The utility that writes > the boot sectors works fine - there's a brief flicker of drive activity > and no error messages. When I set the DIP switches to cold-boot the hard > disk, I can see the busy LED on the bridge board light up solid and the > machine freezes. Under normal I/O, the drive activity LED illuminates at > the same time as the one on the ACB-4000, but at boot I never see the > drive itself respond. > > I'm assuming that there's some incompatibility between the ACB-4000 and > the boot PROM. It would help to know what it's expecting to see. I've > been digging through the boot ROM sources, but nothing jumps out so far. > > FWIW, I've tried an Adaptec ACB-5500 controller (same results), a Xebec > 1410 (won't format or verify, but can be written/read) and a Xebec 1410A > (I/O errors). > > Steve Steve, What OS are you using? I understand that the original OS had an OS bug related to direct hard drive booting. I can check around if you have not yet resolved the problem Bill

12 years, 6 months

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8086 Emulator for Debugging?

by holm＠freibergnet.de

Hi, I have an unusal east german PC, an A7150 aka CM1910. This Computer isn't build out of a motherboard and Slot Cards, it hast Modules and a passive Backplane with something like a Multibus-1 Bus using DIN41462 connectors, one for the System Bus (MMS16) the other for a Localbus. The Computer contains a CPU with 8086/87 and two SZ80-A based Subsystems for Graphics (using a NEC 7220) and Disk IO (2 Floppies and at ST506 Interface). The Computer is running DOS3.3, CP/M86 and a Unix called MUTOS, an realtime System called BOS1810 is also available, but I don't know an western equivalent for it. The 1810 ic comming from the soviet name of the 8086 Chips, they are named K1810xx. Here at robotrontechnik.de is a page about this Computer http://www.robotrontechnik.de/index.htm?/html/computer/a7150.htm buit it is in german. Here are some pictures of cards from this machine: http://www.robotrontechnik.de/index.htm?/html/computer/a7150.htm Ok, so far so good. This Machine is running DOS, but it isn't that much XT Compatible. The Graphics are emulating CGA (doublescan) for this mode but are capable to do 640x480 in 256 Colors. The Processor is clocked with 4,9 Mhz, which schould be a little faster than a average XT but the Bus arbitation brings in some more delay. The BUS is capable of multimastering which isn't used in this machine but takes time.. I have at least 3 of this machines, they aren't that rare in the former GDR and the Eastern Block. I've tried to put in a NEC V30 CPU which is working principially, but the BIOS in the Machine rejects it later. The Machine Checks are simple to precise. For Example the ACT Acceptance Test reports a bad PIT Timer (8254) since it Checks the correctness of the timer with some loop of instructions >from the CPU. The BIOS of this machine consists of 4 2764 EPROMS and it therefore 32Kbyte long. So far the Intro, Now I wan't to disassemble the BIOS with the checks to build a version that's capable to run on a V30. Why? Just for fun... I've now looking for available 8086 emulators to load end step trough the BIOS code while looking what happens there (I'm not a x86 guy at all). Found two emulators on the Net (emu8086 and I8086emu) both both of them aren't capable to load a binary file as BIOS and step trough it. The emu8086 has'nt any capability to load the code in that are that I want f000:f800 until the end of the 1MB, at least I found no way to do this an dgot no answer to my question to the author and the 2nd one wich runs on Windows and Linux (FreeBSD to) as long as they are 32BIT OS's seems to support not more than 64KB Code in the last available release. So the final question is: Does someone know wo a software that can do that? Kind Regards and a merry Christmas, Holm -- Technik Service u. Handel Tiffe, www.tsht.de, Holm Tiffe, Freiberger Stra?e 42, 09600 Obersch?na, USt-Id: DE253710583 www.tsht.de, info at tsht.de, Fax +49 3731 74200, Mobil: 0172 8790 741

12 years, 6 months

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S-100 PCBs available

by LYNCHAJ＠YAHOO.COM

There are still three (3) of the S-100 bus extender boards left if you are looking for them. These are the nice ones with a logic probe, LEDs, speakers, fuses, lead clip-ons, etc. http://s100computers.com/My%20System%20Pages/Extender%20Board/Extender%20Boa rd.htm The PCBs will be $20 each as per the usual arrangement. Shipping in the US is $3 for a single PCB and $2 for each additional PCB. Shipping internationally is $12.75 for a single PCB and $3 for each additional PCB. This is for the bare basics USPS first class postage with no tracking or insurance. The builder assumes all risk of delivery as per usual arrangement. There is also one S-100 Parallel IO V2 PCB (limited edition) available for $30. These are a limited special order and have all the patches and improvements from the last batch. No cuts or jumpers required. Please send a PayPal to LYNCHAJ at YAHOO.COM with the subject "S-100 bus extender" or "S-100 Parallel IO V2" and I will send your board(s). Thanks and have a nice day! Andrew Lynch

12 years, 6 months

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Wargames magazine

by dgriffi＠cs.csubak.edu

Someone went through the trouble to identify the magazine in the movie Wargames that set off the events in that movie. http://mw.rat.bz/wgmag/ -- 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?

12 years, 6 months

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Apple Duo 230 Battery?

by earl＠baugh.org

Brad, Yeah, if I can FIND one, I figured the folks at AHCS could help me rebuild it. I'm probably going to have a "big" rebuild laptop battery task, once I at least find batteries for all the Mac laptops I got on that palette of Macs. However, sadly, the Duo 230 is the ONLY one that didn't have even ONE battery pack in the pile. I've been hunting on ebay and various other sites, but aside from one or two units (and one full unit and docking station) I've not seen any even LISTED for sale... I'm still interested in 2 of them, if anybody knows of a source... Earl > Message: 18 > Date: Sat, 21 Dec 2013 02:46:03 -0500 > From: BE Arnold <bearnold at outlook.com> > Subject: Re: Apple Duo 230 Battery? > > Many battery packs of that time are nothing more than a bunch of NiCad sub-C cells. If we could determine that it is such, I can build you one. > Can you bring one to the meeting today? > > >> On Dec 21, 2013, at 12:34 AM, "Earl Baugh" <earl at baugh.org> wrote: >> >> Does anyone know of a source for a battery for an Apple Duo 230 laptop? >> I've got a Duo, and got it working, but no battery (works on AC). >> Ultimately, I'd like one battery "for show" that's all original (don't care >> if it works or not) and another I can "crack open" to restore/repair for >> actual battery power use... >> >> I've been watching various outlets for a while, and simply haven't >> seen/found any.. >> >> Thanks. >> >> Earl

12 years, 6 months

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Looking for: one (1) Apple II keyboard keyswitch

by derschjo＠gmail.com

I've been slowly restoring an Apple II (original) to working condition and my last hurdle is getting the keyboard working reliably. When I started a handful of keys didn't work, worked intermittently or had debouncing problems and I managed to get them working fairly well again by carefully working in some contact cleaner into the switch. (It's a real PITA since these things are solid blocks of plastic and cannot be disassembled.) I have one key left that I cannot make work through this method. I'd rather not sacrifice another keyboard just for a single keyswitch; does anyone have any of these going spare or have a "salvage quality" Apple II keyboard I could pull a switch from? (Or does anyone have better repair advice for these switches?) Thanks as always, Josh

12 years, 6 months

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Looking for HP 12597A 8bit dup interface

by hp-fix＠xs4all.nl

I'm looking for a HP 12597A 8 bit dup interface for the HP 2100, 21MX, 1000 series. Want to connect my tape punch to my HP 2100S cpu, if someone wants to part >from it contact me. -Rik

12 years, 6 months

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Emulex P4000 software

by b4＠gewt.net

Afternoon, I have a couple of these (in need of PSu repair...rigged up a temporary ATX supply). I managed to find the software on Emulex's FTP site...but it's password protected in a zip file. Does anyone have the software or the password? I'm currently bruteforcing it, but it could take awhile... -- Cory Smelosky http://gewt.net Personal stuff http://gimme-sympathy.org Projects

12 years, 6 months

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Walt Mossberg's last article at the WSJ. the products that changed the digital industry

by christian_liendo＠yahoo.com

I don't agree on everything, but to each their own http://online.wsj.com/news/articles/SB1000142405270230485810457926431315580… 1. Newton MessagePad (1993) 2. Netscape Navigator (1994) 3. Windows 95 (1995) 4. The Palm Pilot (1997) 5. Google Search (1998) 6. The iPod (2001) 7. Facebook? 8. Twitter (2006) 9. The iPhone (2007) 10. Android (2008) 11. The MacBook Air (2008) 12. The iPad (2010)

12 years, 6 months

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Merry Christmas! (a little early)

by sales＠elecplus.com

* * * * .--. \/ \/ \/ \/ ./ /=* \/ \/ * * ... (_____) \ ^ ^/ \ \_((^o^))-. * (o)(O)--)--------\. \ ( ) \ \._. | | ||================((~~~~~~~~~~~~~~~~~))| ( ) | \ \__/ ,| \. * * * * * * ./ (~~~~~~~~~~~) \ * ||^||\.____./|| | \___________/ ~||~~~~|~'\____/ * || || || || A || || || | * <> <> <> <> (___||____||_____) ((~~~~~| * Cindy Croxton _____ No virus found in this message. Checked by AVG - www.avg.com Version: 2014.0.4259 / Virus Database: 3658/6932 - Release Date: 12/18/13

12 years, 6 months

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