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

How to enable USB drives in both Windows 98SE AND MS-DOS 7.1.

by jnc＠mercury.lcs.mit.edu

> From: Terry Stewart > If I had to go to that extent of writing it as a robust, referenced, > refereed, definitive technical article, I probably wouldn't bother. Sure. Neither would I. But how is this relevant to the CHWiki question? Noel

8 years

2
1
0 0

DECwriterIV/LA100s and large DEC

by shadoooo＠gmail.com

Hello Adrian, do you think that you could ship one of the LA100-CA to Italy? Thanks Andrea

8 years

1
0
0 0

How to enable USB drives in both Windows 98SE AND MS-DOS 7.1.

by terry＠webweavers.co.nz

The title might suggest to topic is not vintage, but the reason I did this myself was to facilitate classic computer disk imaging. I?ve recently given USB drive capability to the MS-DOS 7.1 environment in a Windows 98SE computer I use for the purpose above. It was a bit of work configuring the machine to ensure both the MS-DOS drivers and the Windows 98SE drivers co-existed peacefully. I'm no Windows 98 guru (or MS-DOS guru for that matter) so it may not be the most efficient or elegant of solutions. However, it worked for me. That being the case I thought I?d document what I did. Hopefully the article will be useful to others who might want to do this. http://www.classic-computers.org.nz/blog/2018-02-05-USB-in-MS-DOS-and-Win98… Terry (Tez)

8 years

6
17
0 0

Microfiches on Ebay

by mattislind＠gmail.com

Ebay seller Lobo Rose Images has almost 300 auctions for microfiches on DEC documents. Many are already available online but some I cannot find. http://stores.ebay.com/Lobo-Rose-Images/Microfiche-/_i.html?_fsub=237202150… /Mattis

8 years

5
4
0 0

anyone recognize this blank board?

by aek＠bitsavers.org

https://www.ebay.com/itm/311965565048 The same seller has a VT180 and some variant of the VT100 with an expansion board I don't recognize Interesting thing about the blank board is it says "VT-11X" on it and it looks like it would have been an 8-bit CPU looking at the string of DRAMs on it.

8 years

2
2
0 0

Good Electronic/computer stores SF area

by dj.taylor4＠comcast.net

I haven't been in the San Francisco area in about 30 years. I remember a number of used computer/electronics stores back then, can't remember any names except Weird Stuff Warehouse. Are there any stores that are worth a visit? What about outside of the SF area? Doug

8 years

6
7
0 0

DECwriterIV/LA100s and large DEC monitors available, Cambs UK

by binarydinosaurs＠gmail.com

Hi folks, Clearing out some of the larger DEC pieces I have, does anyone want these before I offer them to the Centre For Computing History? They?d need to be collected from Cambridgeshire, or I can deliver them if the distance is reasonable. I kind of need the space quickly too. Usual caveat as working-when-last-powered-up :) 3x LA100-CA with keyboards VRT19 with video cable, last powered up in Dec 2014 VR319 mono VXT monitor VR261 mono workstation monitor VXT1200 VXT1000 Alpha 3000-400, maybe 2 if I can find the 2nd one. Cheers, ? Adrian/Witchy Binary Dinosaurs - Celebrating Computing History from 1972 onwards w: binarydinosaurs.co.uk <http://binarydinosaurs.co.uk/> t: @binarydinosaurs f: facebook.com/binarydinosaurs

8 years

5
4
0 0

FS: Livingston Portmaster 2e

by kevin.bowling＠kev009.com

This one is fully upgraded to 30 serial ports. Just shoot me an offer, I'll probably say yes Regards, Kevin

8 years

7
7
0 0

who is in this picture? (VCF 199x)

by wayne.smith＠charter.net

Date: Wed, 31 Jan 2018 04:21:40 -0600 From: Michael Lee To: cctech at classiccmp.org [2] Subject: Re: who is in this picture? (VCF 199x) Message-ID: Content-Type: text/plain; charset=utf-8; format=flowed ***Sorry to be picking up this thread so late - I'm behind in my reading - but I have a bunch of pictures that I took at this show here: https://photos.app.goo.gl/AysFbl8Dhv4qn23V2 I believe that's Pavl Zachary... Photo from 2004 VCF West 7: https://www.flickr.com/photos/geekmuseum/2908317855 [4] On 1/30/2018 3:55 PM, Bill Degnan via cctech wrote: > https://retropopplanet.files.wordpress.com/2011/06/vintage-computer.jpg [5] > > I was not at this particular VCF out in California in the later 90's when > this photo of a DEC exhibit was taken; the original picture from vintage.org > is no longer hosted. > > Does anyone have a copy of the old vintage.org exhibit/photo archive? > > Bill I believe that's Pavl Zachary... Photo from 2004 VCF West 7: https://www.flickr.com/photos/geekmuseum/2908317855 [6] On 1/30/2018 3:55 PM, Bill Degnan via cctech wrote: > https://retropopplanet.files.wordpress.com/2011/06/vintage-computer.jpg [7] > > I was not at this particular VCF out in California in the later 90's when > this photo of a DEC exhibit was taken; the original picture from vintage.org > is no longer hosted. > > Does anyone have a copy of the old vintage.org exhibit/photo archive? > > Bill Links: ------ [1] mailto:mikelee at tdh.com [2] mailto:cctech at classiccmp.org [3] mailto:2a444223-cd25-8686-c836-88313baacd66 at tdh.com [4] https://www.flickr.com/photos/geekmuseum/2908317855 [5] https://retropopplanet.files.wordpress.com/2011/06/vintage-computer.jpg [6] https://www.flickr.com/photos/geekmuseum/2908317855 [7] https://retropopplanet.files.wordpress.com/2011/06/vintage-computer.jpg

8 years

1
0
0 0

Intel 8085 - interview?

by spacewar＠gmail.com

At some point I read an article or a transcript of an interview with an Intel employee (or former employee) who had been involved with the design of the 8085, describing how he had specified additional instructions over those of the 8080, and they had been implemented in the silicon, but then the decision was made to not document any of the new instructions other than RIM and SIM. I no longer recall which Intel employee that was, and can't find the article or interview. Does anyone else remember that, and perhaps have a copy? Eric

8 years

6
13
0 0

How to enable USB drives in both Windows 98SE AND MS-DOS 7.1.

by jnc＠mercury.lcs.mit.edu

> From: Terry Stewart > http://www.classic-computers.org.nz/blog/2018-02-05-USB-in-MS-DOS-and-Win98… > Hopefully the article will be useful to others who might want to do > this. Hi, can I appeal to you (and everyone else who writes up these kinds of notes) to put this stuff on the Computer History wiki? When things like this get placed in the CCTalk archives (for which there is no search system other than Google), or on people's personal sites (ditto) - and I have in the past BTDT for both of these, myself - it's probably going to be hard to find them amidst all the other dross that a Google search typically produces, a couple of years down the road. With the CHWiki, we stand a chance of filtering out the useful information and making available, and _organizing_ all this stuff so that it's possible to find relevant information when it's needed... And no, I don't have time to upload all this stuff myself - I have too much other stuff I'm trying to work on! :-) So, please - let's get organized! Noel

8 years

2
1
0 0

power cord end

by tdk.knight＠gmail.com

anyone know of a power cord designation simlar to nema 13 but smaller its used on a roland R8 has round pins has a power brick between it and te ain power plug https://electricdenimstudios.com/wp-content/uploads/2016/04/Roland-R8-MKII-… http://www.vintagesynth.com/sites/default/files/2017-05/roland_r8mkii_rear_…

8 years

1
0
0 0

OpenVMS software repositories?

by healyzh＠avanthar.com

What sites still exist that have VMS software? I know the about the OpenVMS Freeware CD?s from HP VMS Engineering. http://h41379.www4.hpe.com/openvms/freeware/collections.html As an example, I?ve found part of the old DECwindows archive, but it looks like that site is basically gone. Zane

8 years

8
14
0 0

Final reminder! VCF Pacific Northwest is this weekend

by cctalk＠snarc.net

Helloooooooooooooo cctalkers. We've been planning this for almost a year and now it is time for the inaugural Vintage Computer Festival Pacific Northwest, this weekend (10am-5pm both days) at Living Computers: Museum+Labs in Seattle. There will be all the usual goodness that you expect from a Vintage Computer Federation event: computer museum tours, incredible exhibits, amazing venue, interesting presentations, consignment booth, food, tours of the nearby Connections Museum, and you can pick up a snazzy VCFed mousepad or coffee mug. :) If you live within a day's drive then you owe it to yourself to check out this show! All the details are at www.vcfed.org and don't forget to use #vcfpnw in social media posts. And of course, if you see me there then please come say hello. I love meeting Internet people in person. Special thanks to our supporters: LC:ML, Hackaday, ACM, and the IEEE History Center. -Evan ________________________________ Evan Koblentz, director Vintage Computer Federation a 501(c)3 educational non-profit evan at vcfed.org (646) 546-9999 www.vcfed.org facebook.com/vcfederation twitter.com/vcfederation

8 years

2
1
0 0

8" floppy drives from AMD development system?

by classiccmp＠crash.com

Anybody notice this eBay auction? https://cgi.ebay.com/itm/222816138475 I'd guess it was part of a packaged AMD development system, maybe somebody recalls some specifics...? Or maybe that it was something else? Google is returning a lot about Age-related Macular Degeneration, and other misses where they helpfully turn "AMD" into "and" ... Thanks, --S.

8 years

2
2
0 0

How to enable USB drives in both Windows 98SE AND MS-DOS 7.1.

by seefriek＠gmail.com

From: Curious Marc <curiousmarc3 at gmail.com> > > On Windows 7, using regedit, set > ?HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\Lsa\LMCompatibilityLevel? to ?1? > You might need to create the new entry under \lsa as a REG_DWORD, set to 1 > As your friendly neighbourhood infosec type, please be aware that this setting opens a rather nasty set of possible security issues. Fine on your lab network, but you probably don't want a machine configured like that on a possibly hostile network. KJ

8 years

1
0
0 0

Microvax II 'primer'?

by jules.richardson99＠gmail.com

So, I picked up (and I did just carry it into the house, and now I hurt) a Microvax II from another list member yesterday. Cosmetically it's a disaster (BA123 has a cracked top panel, broken wheels, missing front door, missing right-rear panel) but internally it appears to be complete; board wise we have: M7606 - CPU M7608 - 4MB ram M9047 - grant continuity M7504 - DEQNA ethernet M3104 - DHV11 8-port serial M7555 - RQDX3 disk controller M7546 - TX50 controller ... it's got a TK50 and hard drive (no idea of capacity). Operational status is a complete unknown, and I have absolutely zero knowledge about these systems - so my question at this stage is what background reading I need to be doing in terms of pre-powerup* checks, actually hooking a console, if there's a suggested minimal config I can use to diag the CPU, and then (assuming it gets to that point) how to actually use the thing (I'm assuming it was running VMS rather than Ultrix, but I don't know for sure). I'm wondering there aren't any handy tutorials out there, alongside whatever DEC docs are recommended. * e.g. for most machines I'd be thinking in terms of pulling all boards/drives, hooking up a dummy load to whatever PSU rails required it, and then at least running the PSU up in isolation first, but I don't know to what extent this machine requires some logic in place for the PSU to even run. cheers Jules

8 years

10
21
0 0

Searching for EBBS][

by jplist2008＠kiwigeek.com

As the title suggests, I'm looking for a copy of the EBBS][ software for a friend who used to run an Apple based BBS many moons ago and is looking out for a bit of nostalgia. So far he's been unable to locate the disks the system used to be on (he suspects damaged in a storage space flood in the late 90s) and my google fu is weak. Would anyone be able to help us out here? Replies should probably be kept off-list. My thanks to all; - JP

8 years

1
0
0 0

Google, Wikipedia directly on ASCII terminal?

by martin＠meiner.ch

Hello guys. I am a passionate collector of old computerhardware (PDP8?s) and terminals from the very early 70ies. It has always been my aim to be able toconnect a modem or an acoustic coupler directly to one of my ASCII terminals,dial a number and be connected?with Google! Something like Google-interface but convertedto match ASCII terminals (only text, very simple graphics). I am aware that all searches that returnpicture sand graphics will not be displayed. But at least search-page should bein plain text, and many websites may as well. Wikipedia would be great? Does anybody know if there exists such anaccess-number where this conversion is already made, or is there a small deviceon the market that allows on one side connect to a dial-up modem and on theother side to the terminal and doing the ASCII conversion stand-alone? ?It would be really cool to be able todemonstrate to folks that these terminals can actually look up pages on Googleand (with limitations) also access some pages. Something similar has actually been done in an artisticway a few years ago under: http://www.masswerk.at/googleBBS/or http://www.masswerk.at/google60/ But I need the real thing working where I canconnect my terminals to?? Any help is appreciated

8 years

16
34
0 0

CLASSICCMP vs. RackSpace or Gmail

by healyzh＠aracnet.com

Is anyone able to get email from this list via either CLASSICCMP or RackSpace? When I first changed over to using the healyzh at avanthar.com address, I was able to receive email from the list for a short time. I've even tried to subscribe with a gmail account, and no luck. My aracnet address is no longer reliable, and will not willingly be renewed. Zane

8 years

7
11
0 0

[RESOLVED] Re: EPROM baking

by kspt.tor＠gmail.com

On 5 February 2018 at 20:06, Chuck Guzis via cctalk <cctalk at classiccmp.org> wrote: > I have a similar gripe with barrel connectors, > which don't seem to enforce any standard at all regarding polarity or AC > vs. DC. .. which led me to accidentally power a USB hub with 12V instead of 5V - the power supplies looked the same, had the same plug, and I couldn't read the tiny writing on the warts. That blew the nicest notebook PC I've ever found - I bought it in Japan at a special price, the normal price is out of my league. Since then I have bought a Dymo and, armed with a magnifying glass, went through all the chargers and warts I own and labelled them. Which I should have done *before* the accident of course. But what if there was some kind of standard for barrel connectors instead.. sigh.

8 years

5
6
0 0

PDP8E 3.75V on Omnibus issue

by mail.nickallen＠gmail.com

Hey everyone, thanks for always serving as a great sounding board and source of advice! I have an issue with a PDP8E which has an issue with the power supply.? The -15V, 15V, and 5V are good, and my Bus Loads board is good, but for some reason the power supply is bringing down the 3.75V signal from the bus loads to 0V (this is the DC VOLTS OK grey wire from the power supply). I'm having troubles finding the schematics of the PDP8e power supply, also any suggestions on what could be pulling the 3.75V to 0V (tested multiple Omnibus backplanes, and bus load boards, so I'm fairly certain it's the PSU). All help is MUCH appreciated, thanks!

8 years

2
1
0 0

VMS 8.4 Alpha Hobbyist disk images

by bob＠theadamsons.co.uk

> Date: Thu, 1 Feb 2018 12:55:41 -0500 > From: Douglas Taylor <dj.taylor4 at comcast.net> > To: "General Discussion: On-Topic Posts" <cctech at classiccmp.org> > Subject: VMS 8.4 Alpha Hobbyist disk images > Message-ID: <92b4de6a-b537-4bfb-a1fd-1ebe8133f11a at comcast.net> > Content-Type: text/plain; charset=utf-8; format=flowed > > I'm getting an Alphaserver 1000a and wanted to install VMS 8.4 - > hobbyist license from CD. > > So, I went to the folder on my PC where I have the 8.4 hobbyist > distribution.? There are 3 ISO files; ALPHA084, ALPHA084LP1 and > ALPHA084LP2. > > I thought I would burn these to CD and up and away.? However, Windows 7 > balks and says, 'The selected disc image file isn't valid'. > > Is it Windows 7 or is there something I'm missing?? Is the CD on the > Alphaserver 2048 byte block size or 512? > > Doug They _are_ 'ISO' images but in a format which Windows 7 or whatever burning program you're using doesn't understand. I used Nero (or Daemon I think) to write CDs for my VAX but there will be plenty of other programs equally suitable. You don't need to do anything special, just treat them as an ISO image and let the burning software get on with it. Once written, Windows won't be able to read them so don't panic. If the burning software includes verification then it (not Windows) will be able to read them back OK. (I'm using VMS v7.3 but I'm sure this is no different). Generally AFAIK the CD readers on Vaxes (Vaxen - ugh!!) and Alphas will deliver 512 byte blocks but this isn't relevant for the image itself. Bob

8 years

4
3
0 0

EPROM baking

by Mark＠Misty.com

Hi, I am working on several projects requiring 2708 and 2716 EPROMs, and am finding some of my chips will not erase, and some will not take a program. I've also learned more in the past week than I wanted to know about repairing Data-I/O 29a/b programmers. I vaguely remember in the 1990s baking such EPROMs in the oven, but I do not remember temperature or time. I was surprised that Google didn't turn up anything useful with this info. I'm sure someone here will have some notes on EPROM baking. Mark -- Mark G. Thomas (Mark at Misty.com), KC3DRE

8 years

17
24
0 0

VMS 8.4 Alpha Hobbyist disk images

by dj.taylor4＠comcast.net

I'm getting an Alphaserver 1000a and wanted to install VMS 8.4 - hobbyist license from CD. So, I went to the folder on my PC where I have the 8.4 hobbyist distribution.? There are 3 ISO files; ALPHA084, ALPHA084LP1 and ALPHA084LP2. I thought I would burn these to CD and up and away.? However, Windows 7 balks and says, 'The selected disc image file isn't valid'. Is it Windows 7 or is there something I'm missing?? Is the CD on the Alphaserver 2048 byte block size or 512? Doug

8 years

16
22
0 0

Help identify "multichip module"

by pontus＠Update.UU.SE

Hi I got this picture sent to me with zero context. Does anyone recognize what it is? http://www.update.uu.se/~pontus/slask/identify/mystery_chips.jpeg Thank you, Pontus.

8 years

2
4
0 0

CLASSICCMP vs. RackSpace or Gmail

by kspt.tor＠gmail.com

On 6 February 2018 at 06:09, Zane Healy via cctalk > And obviously I meant to ask, is anyone able to get email from this list via > either gmail or an email account hosted by RackSpace? I've always used gmail with the list. There used to be a problem with automatic de-subscription due to 'excessive bounces', that problem went away after the list was modified to not show 'From' addresses directly. Since then the gmail/list combination has worked perfectly.

8 years

1
0
0 0

A couple of RL02 questions

by cramcram＠gmail.com

I've got two RL02 units. One is a parts unit and has an access plate for the door solenoid. I can open it. The other has no access plate nor is there a cutout for one. How do I open this cover with the power off? This is a newer unit as it has head lock screws on the bottom of the drive. The second question has to do with rack mounting. I want to mount this in a H960 cabinet but will obviously need to slide it out to replace packs. All the unit has is a thin rail on both sides that is riveted to the unit. It looks like chassis slides were there originally. Does anyone have either the DEC part # for the slides or a contemporary part # for one that will work? Thanks, Marc

8 years

4
3
0 0

Trouble installing 4.3 BSD+NFS Wisconsin Unix

by jnc＠mercury.lcs.mit.edu

Can anyone help 'Darkstar' with this: http://gunkies.org/wiki/Talk:Installing_4.3_BSD%2BNFS_Wisconsin_Unix Noel

8 years

2
1
0 0

DEC Storageworks

by dj.taylor4＠comcast.net

The alphaserver 1000a I have has a storageworks array. The disk carriers are green in color, I see storageworks disks for sale on ebay that are blue.? What is the difference? Are they interchangeable? Is it possible (or even wise) to open one of the green carriers and change the disk out? Doug

8 years

7
9
0 0

Looking for Heath H-29 operation manual and schematic

by aek＠bitsavers.org

Just put a working one together from parts from two different auctions and I'd like to find the rest of the documentation. H-19s are pretty common, H-29s not so much so. Haven't been able to find the docs on line anywhere.

8 years

4
5
0 0

Looking for a home

by rlloken＠telus.net

On Sun, 4 Feb 2018, Pete Lancashire via cctalk wrote: > One of the Suns is a Sun1 pre-production Perhaps a pre-production Sparc? I had a long personal relationship with a Sun-1 and nothing there looks remotely like a Sun-1. -- Richard Loken VE6BSV : "...underneath those tuques we wear, Athabasca, Alberta Canada : our heads are naked!" ** rlloken at telus.net ** : - Arthur Black

8 years

2
1
0 0

DEC Storageworks

by rlloken＠telus.net

On Sun, 4 Feb 2018, Douglas Taylor via cctech wrote: > The alphaserver 1000a I have has a storageworks array. > > The disk carriers are green in color, I see storageworks disks for sale on > ebay that are blue.? What is the difference? Are they interchangeable? > > Is it possible (or even wise) to open one of the green carriers and change > the disk out? Yes, the disks are interchangeable. I have used blue disks in a green shelf and green disks in a blue shelf. The modules come apart fairly easily and you can replace the drives or remove drives and use them as ordinary SCSI drives elsewhere - I have done that too. DEC and Compaq also sold DLTs in a StorageWorks module those can also be taken apart and the drive replaced but they are harder to get apart and you must pay attention if you hope to get it reassembled properly. > > Doug > > -- Richard Loken VE6BSV : "...underneath those tuques we wear, Athabasca, Alberta Canada : our heads are naked!" ** rlloken at telus.net ** : - Arthur Black

8 years

1
0
0 0

MicroVAX Diagnostic Monitor, Version 5.0, Release 139 on CD-ROM?

by glen.slick＠gmail.com

According to the document referenced below the MicroVAX Diagnostic Monitor, Version 5.0, Release 139 was available a CD-ROM media, where QZ-K32AA-H8 was the order number of the CD-ROM media kit. So the question is, does anyone happen to have a copy of that MDM CD-ROM? Or any versions of MDM on CD-ROM? MicroVAX Diagnostic Monitor Release Notes Order Number: AA-PK29E-TE These release notes describe restrictions, undocumented features, and other essential information about the MicroVAX Diagnostic Monitor (MDM) Version 5.0, Release 139. These release notes supersede all other MDM documentation. http://manx-docs.org/collections/mds-199909/cd1/vax/pk29ete.pdf

8 years

1
0
0 0

wonky eproms

by dave＠661.org

I have a few tubes of ST-branded M27C256B UV-erasable EPROM chips. All of these fail to program starting at 0x200 until 0x27F. At 0x200, 0x00 is written, then until 0x27F, the bytes are 0xFF. What would cause this? Can it be fixed by an extra-long time in the eraser? Should I just break out the hammer? At least I know the programmer is capable of programming a TI-branded 27c256 and 29c256 flash chips. Might there be a bug in the programming software? FWIW, I'm using a Minipro TL855. Linux software is available at Github: https://github.com/vdudouyt/minipro -- David Griffith dave at 661.org 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?

8 years

2
1
0 0

IBM 5100 to 5110 Transitional Model

by santo.nucifora＠gmail.com

HI Wayne, I believe the KVA is increased because of the extra memory card. I have a 5100 with 0.4 and another with 0.336. The 0.4 has an extra memory card and is BASIC and APL as opposed to just BASIC. The printed 5100 badging on the front is not consistent but sometimes if it doesn't have it printed on the front, it's on a silver metallic emblem embedded in the top cover. If the 5100 badging is printed on the front, it may or may not have the silver metallic badge on the top cover. I have a top emblem model and a top emblem-less model yet both have the 5100 badging printed on the front. If you look at other photos on the net, you will see others with no front printed badging. This particular one had no front badging but has the emblem in the top cover and I think this is normal. I'm not sure which one is earlier/later but I would imagine that is why there is a difference. I can't explain the 5110/5100 difference on the bottom. Hope this helps. On Sat, Feb 3, 2018 at 6:15 PM, Wayne Smith via cctalk < cctalk at classiccmp.org> wrote: > Has anyone noted this listing of what the seller is calling an "IBM > 5100" on Ebay? > > https://www.ebay.com/itm/IBM-5100-B1-Basic-Language-16k-Memory-Powers- > on-monitor-works-but-no-text/112776476816 > > While it is listed as a 5100, it lacks the 5100 badging on the front > center panel (to the right of the power switch). In addition, the > indicia on the bottom > (https://i.ebayimg.com/images/g/9VYAAOSwaC9aapB-/s-l1600.jpg) > indicates both models 5100 and 5110, and the KVA is listed at 0.4 > whereas 5100s are 0.336. Compare the typical indicia on the bottom: > https://tinyurl.com/ybmvms7u. > > The serial number is in the 5100 format of 10-1XXXX, but this unit has > the highest serial number I have seen on a 5100 (10-15687). > > > I am guessing that this is some sort of transitional version or > perhaps a 5110 "prototype". > > Any thoughts? > > -W > > >

8 years

1
0
0 0

IBM 5100 to 5110 Transitional Model

by wayne.smith＠charter.net

Has anyone noted this listing of what the seller is calling an "IBM 5100" on Ebay? https://www.ebay.com/itm/IBM-5100-B1-Basic-Language-16k-Memory-Powers- on-monitor-works-but-no-text/112776476816 While it is listed as a 5100, it lacks the 5100 badging on the front center panel (to the right of the power switch). In addition, the indicia on the bottom (https://i.ebayimg.com/images/g/9VYAAOSwaC9aapB-/s-l1600.jpg) indicates both models 5100 and 5110, and the KVA is listed at 0.4 whereas 5100s are 0.336. Compare the typical indicia on the bottom: https://tinyurl.com/ybmvms7u. The serial number is in the 5100 format of 10-1XXXX, but this unit has the highest serial number I have seen on a 5100 (10-15687). I am guessing that this is some sort of transitional version or perhaps a 5110 "prototype". Any thoughts? -W

8 years

1
0
0 0

RX02 Emulator Problem

by bill.gunshannon＠hotmail.com

I finally got a system running again and hooked up my first AK6DN RX02 Emulator.? Worked, up to a point.? I can boot >from it and read and write to it.? However, every once once and a while after doing a bunch of accesses the Green LED stays on and the system freezes.? Sometimes I can get back out of it with Control-C but sometimes it is locked? up so tight I have to reboot to get out of it. Anybody else see this behavior? bill

8 years

1
0
0 0

Data IO 29B / Unipak 2B adapter?

by mattislind＠gmail.com

I need to read a couple of Signetics 82S215 bipolar PROMs with my old Data IO 29B / Unipak 2B. But it needs a 351B-068 adapter. Does anyone has information regarding this adapter? I did find an old post in DATA_IO_EPROM at groups.io mailinglist that a man named Alfred Marin had boards. I even found his email but it bounced. Any other pointers in this subject? /Mattis

8 years

2
2
0 0

SUN AUDIO BREAKOUT BOX CABLE 530-1594-01

by bill.gunshannon＠hotmail.com

Any Sparc aficionados out there?? I have one of these available. make an offer (+ postage). bill

8 years

1
0
0 0

MACSYMA classic

by jnc＠mercury.lcs.mit.edu

> From: Lars Brinkhoff > notes on his progress are here: > https://github.com/PDP-10/its/issues/284 Ah, that sounds pretty good. The ability to re-create source, given the FASL, will really help. > In 1982 MIT licensed Macsyma to Symbolics, but also made it available > to the US Department of Energy. I wasn't involved with this, but my recollection from dribs and drabs I overheard was that DoE got a copy because they'd been the funding agency for a lot of the work - i.e. MIT didn't just give a copy to DoE, it was a requirement. Noel

8 years

1
0
0 0

IBM 9331-011 8" External Floppy Drive - eBay 183038271095

by david4602＠gmail.com

On 2/1/2018 1:00 PM, Adrian Stoness wrote:> ibm had 8in floppy drives in their black from the times of white? This was dressed to go with the AS/400 line. Mine is dated 1994. - David

8 years

11
36
0 0

MACSYMA classic

by jnc＠mercury.lcs.mit.edu

> From: Lars Brinkhoff > Right, we haven't found sources for everything in Macsyma. Ow. How much, very roughly, is missing (if you happen to know) - 5%, 50%? > I'd say we're lucky to have it running at all Good point! Noel

8 years

3
3
0 0

Modems & Xerox

by c.murray.mccullough＠gmail.com

I started accessing BBSs back in the early 70s with a 300 baud modem. >From there it went to 1200; 2400; 9600; 28.8K and 56Kilobaud. All on dialup! Now at 5 Mbits/sec. here in Ontario. An American friend has 250Mb/s download. Yikes! The classic computer era taught us patience didn?t it? BTW, one had to have a private phone line not a party line for a modem to work. Making our hobby more expensive! On the business-side of computing: Xerox sold 50.1% of its business to Fujifilm, Japan. Xerox Parc was a seminal institution in early classic computing era: Mouse and graphics input for instance. Happy computing! Murray :)

8 years

2
1
0 0

X11 expertise on ancient HW sought... (4-plane visual (overlay) via X-server on MS-WIndows)

by dimitris.theo.gr＠gmail.com

Sorry for undiggind this subject so many years later, but have you found a solution to your problem? I am facing exactly the same issue, and i have tried all possible windows X server options without success. The only possibility I am working with is with a Mac OS X server, which reports a 5-bit visual.

8 years

2
3
0 0

SuperTerm Maintenance Manual

by mike_t_norris＠hotmail.com

Hi Guys, I am new to the group, so let me know if this post is inappropriate. I have a SuperTerm Maintenance Manual that I am about to put in the bin. I am prepared to scan it if any one is interested, I could not find it on bitsavers.org, but I guess there may be one in the backlog? The SuperTerm was manufactured by Intertec Data Systems c. 1978, it was a 180 CPS dot matrix printer (RS232), quite often used as a console printer in place of a LA36, Intertec also did a speed up board for the LA36 (I may have details on that when I get through clearing out my loft), to make it a 150 CPS printer, although it was prone to carriage slams initially, same was true of the SuperTerm for a while, which also resulted in the carriage driver transistors burning out. The company I worked for produced a separate driver board to get around the problem, typical patch at the time. Regards Mike Norris

8 years

5
8
0 0

Foonlies

by lars＠nocrew.org

This document seems to imply that the Super Foonly and the Foonly F1 were separate machines. When I've seen them discussed, they always seemed to be uses synonymously. http://www.bitsavers.org/pdf/dec/pdp10/KC10_Jupiter/memos/foonly_19840410.p… SUPERFOONLY DESIGNED 1968-71 10,000 TTL IC'S 3 MIPS F1 (1978) 5,000 ECL IC'S 3.5 MIPS Also, except for the CCRMA F4 at Computer History Museum, does anyone know about any Foonly machine having been preserved?

8 years

10
25
0 0

MACSYMA classic

by jnc＠mercury.lcs.mit.edu

> From: Lars Brinkhoff > It's frankensteined together from a mix of source and FASL files FASL? So some of the sources are apparently gone? Noel

8 years

2
1
0 0

connecticut micocomputer AIM16

by billdegnan＠gmail.com

Does anyone have an AIM16 hardware unit made by Connecticut microComputer company, from the late 70's? I am working through their cassette software, a box I got years ago from their internal programming department with versions and variations of same programs. Bill

8 years

1
0
0 0

DL10 documentation

by jnc＠mercury.lcs.mit.edu

> From: Phil Budne > FWIW, Found these bits > ... > Those bits and others can be found Excellent archaeology! With these, and the ITS sources (for which we have both the -10 and -11 sides), the register definitions in the early PDP-10 CPU manual, and the prints, it should be possible to write a programming manual for the DL10, to replace the one that's now lost. (If it ever existed - does anyone know?) Any chance I could convince you to enter all this stuff on the CHWiki DL10 article: http://gunkies.org/wiki/DL10 Lars (mostly) and I have added a little bit, but there's still a long way to go! Noel

8 years

1
0
0 0

Foonlies

by jnc＠mercury.lcs.mit.edu

> From: Rich Alderson > I'm going to disagree with the history Al posted, because Dick himself > told me the story. What was the history according to Dick, if you recall? Would he still be available, to write it as he saw it down himself? Noel

8 years, 1 month

1
0
0 0

where to find ZCPR2, ZCPR3, ZCPR33, ZCPR34?

by spacewar＠gmail.com

I've become interested in ZCPR2, 3, 33, and 34, and am surprised at how difficult it is to locate them online. Or maybe I'm just an idiot. Are they out there somewhere? It looks like ZCPR3 was on SIG/M volumes 184 to 192, but those specific volumes seem to be missing from the SIG/M archives I can find. I'm specifically NOT looking for NZ-COM or Z3PLUS. Thanks! Eric

8 years, 1 month

3
2
0 0

MACSYMA classic

by lars＠nocrew.org

Eric Swenson got the original-ish MACSYMA built and running in ITS. It's frankensteined together from a mix of source and FASL files from ITS, Lisp machine Macsyma sources, etc.

8 years, 1 month

1
0
0 0

Sneak peak: this year's VCF PNW/East/West shirt design

by cctalk＠snarc.net

Here's a sneak preview of the shirt design for all of the 2018 Vintage Computer Federation events. As usual, each event will have a different shirt color. Dan Roganti aka Ragooman used to design the VCF East shirts. Any similarity to him or his interests in the current design is purely coincidental. :) https://vcfed.org/wp/wp-content/uploads/2018/01/pnw-shirt-front-1.png

8 years, 1 month

9
15
0 0

Foonlies

by Wayne.Sudol＠hotmail.com

Yes, they merged @ 1996 with the new company being named AII ("A" eye-eye). Then the combined company was bought by AGFA @2001. All the big daily newspapers used their photo typesetters, the Autologic model APS6 and/or the III 3850. They were fast and didn't break much and used Harlequin Rips so publications could have any front end systems that spoke postscript. The Mac was coming into it's own as a relatively inexpensive non-proprietary publishing platform and the publishers and print houses liked that. Right before the year 2000 scare, all the newspapers bought new ones with the result that Autologic/III made a bundle in 1999, then didn't really have any big orders for the following few years. I know that the LA Times bought 18 of them alone at @ $75K each. As the newspapers transitioned from film to computer-to-plate in the following years, AII couldn't keep up and was ultimately bought by AGFA. There was a lot of competition in the CTP arena back then. I think AGFA moved the company to Cambridge, MA, from Thousand Oaks, California. <http://aka.ms/weboutlook> ________________________________ From: Paul Koning <paulkoning at comcast.net> Sent: Wednesday, January 31, 2018 4:23 PM To: Wayne S Subject: Re: Foonlies Triple I / Autologic? Interesting. I remember (from around 1978) III and Autologic as two separate manufacturers of phototypesetting machines, with III rather obscure, very large physically (a small room) and very fast. Did they merge? paul > On Jan 31, 2018, at 2:52 PM, Wayne S via cctalk <cctalk at classiccmp.org> wrote: > > Was this the machine that Triple I/Autologic created to digitize old color film movies? > AFIK, it used lasers to scan the film and create digital color seps that were recombined later in the process. It was used in the Kate Winslett / Leonardo DiCaprio remake of "Titanic". Autologic even got a mention in the movie credits. > > Autologic donated that machine to UCLA for their film preservation archive project. > > Wayne

8 years, 1 month

1
0
0 0

where to find ZCPR2, ZCPR3, ZCPR33, ZCPR34?

by spacewar＠gmail.com

On Tue, Jan 30, 2018 at 9:29 PM, <wrcooke at wrcooke.net> wrote: > On January 30, 2018 at 3:21 PM Eric Smith via cctalk wrote: > Now I'm still looking for ZCPR2, ZCPR33, and ZCPR34. > > I believe you will find this site: > > http://www.znode51.de/indexe.htm > > useful. I could be wrong, but I think it has the most up to date zcpr > software. > That site has NZ-COM and Z3PLUS, but I've dug through it and cannot find ZCPR2, ZCPR33, or ZCPR34. It's possible that they are there somewhere and I just didn't find them. Apparently NZ-COM and Z3PLUS are based on ZCPR34, but are fancy auto-installing things with no source code, whereas what I'm looking for is the original ZCPR2, 33, and/or 34 distributions that included source code. Best regards, Eric

8 years, 1 month

1
2
0 0

A couple of RL02 questions

by jnc＠mercury.lcs.mit.edu

> From: Marc Howard > All the unit has is a thin rail on both sides that is riveted to the > unit. It looks like chassis slides were there originally. Does anyone > have either the DEC part # for the slides I sent these to the list a while back, and never added them to the CHWiki once we gained access to it; I have now added them there: http://gunkies.org/wiki/RL0x_disk_drive#Installation Note that i) they are handed, so one needs an L and a R (I have extra lefts, and would like to trade some for rights), and ii) the same slides are used on other DEC drives, e.g. the RA81. Noel

8 years, 1 month

2
1
0 0

NCR7510 Bootmedia (Tape)

by harten＠injectstar.de

Hi to all! I'm looking for a boot medium for my NCR 7500. It is the model with one cassette drive (standard MCs) and the monitor in vertical position. I think this model is called 7510 and there should have been at least an OS "BASIC +6". Regards Rolf

8 years, 1 month

1
0
0 0

Bluebox boards, anyone?

by dave＠661.org

Would anyone like a bluebox PCB or two? This project was inspired by Don Froula's ProjectMF[1] in which he presents a PIC-based bluebox[2] and PCB (handed out at HOPE in 2008). A big reason I like AVRs more than PICs is because the development software is OSS and free. So I reimplemented Don's bluebox in C for an AVR ATtiny85. The PCB started off an a drop-in replacement, but evolved into something designed to fit into a Hammond 1591XXM box instead of functioning as a lid for a Radio Shack 230-1801 box. The Hammond box also comes in transluscent blue! The firmware code[3] is done. I just have to do some tweaks once some test PCBs[4] are made because on the prototype, I wired up the keypad a bit strangely. The code implements a 13-key bluebox, a DTMF keypad, a redbox for US, Canada, and UK, greenbox, and 2600 dial pulse. The PCB needs work to correct some early design decisions that turned out to be non-optimal. [1] http://projectmf.org/ [2] http://projectmf.org/bluebox.html [3] https://github.com/DavidGriffith/bluebox-avr [4] https://github.com/DavidGriffith/bluebox-esquire -- David Griffith dave at 661.org 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?

8 years, 1 month

2
1
0 0

who is in this picture? (VCF 199x)

by billdegnan＠gmail.com

https://retropopplanet.files.wordpress.com/2011/06/vintage-computer.jpg I was not at this particular VCF out in California in the later 90's when this photo of a DEC exhibit was taken; the original picture from vintage.org is no longer hosted. Does anyone have a copy of the old vintage.org exhibit/photo archive? Bill

8 years, 1 month

8
7
0 0

IBM 9331-011 8" External Floppy Drive - eBay 183038271095

by cctalk＠gtaylor.tnetconsulting.net

Someone shared the following eBay auction in the comp.sys.ibm.ps2.hardware newsgroup and I figured that someone subscribed to cctalk might be interested: Link - IBM 9331-011 8" External Floppy Drive - eBay 183038271095 - https://www.ebay.com/itm/183038271095 -- Grant. . . . unix || die

8 years, 1 month

2
1
0 0

where to find ZCPR2, ZCPR3, ZCPR33, ZCPR34?

by spacewar＠gmail.com

On Tue, Jan 30, 2018 at 11:38 AM, Bill Degnan <billdegnan at gmail.com> wrote: > https://archive.org/details/LOGIC_AppleII_Disk-CPM014 > > is this what you mean? > While that's useful (thanks!), I'm really looking for the complete ZCPRn distributions, which included source code for the CCP replacement and the utilities etc. That's why ZCPR3 took up _nine_ volumes of the SIG/M library.

8 years, 1 month

3
4
0 0

No subject

by carlclaunch51＠gmail.com

The IPA is heated to 60C before the ultrasound is able to remove the oxide remnants, FWIW. While we can often get the entire smooth surface of the head clean with swabs and IPA, it is very difficult to clean all the material that forms in the cruciform trench recessed into the head (where the read/write and erase coil poles are visible). Heads can seem clean to the naked eye, but a good stereo microscope will insure that you have a clean and smooth surface. Regards, Carl Date: Fri, 26 Jan 2018 12:15:34 -0800 > From: Fritz Mueller <fritzm at fritzm.org> > To: "General Discussion: On-Topic and Off-Topic Posts" > <cctalk at classiccmp.org> > Subject: ultrasonic cleaning for disk heads > Message-ID: <9F2C2AC7-1B35-46F5-BD92-CC3DFD29FBFA at fritzm.org> > Content-Type: text/plain; charset=utf-8 > > I watched with great interest one of curiousmarc?s recent Alto videos, > wherein they clean a Diablo drive head ultrasonically. I?ve been > struggling a bit with my restored RK05 drives to completely clean the heads > after minor head crashes. Not being able to get them really sparkling > clean makes me always worried about running the drives for more than a few > minutes at a time, and a little nervous every time I spin them up?. > Scrubbing and scrubbing and scrubbing with IPA and kimwipes just doesn?t > seem to get all the crud off. > > I do have an alignment pack that I could use to re-align the heads after > removing them for a proper cleaning this way. Decent ultrasonic cleaners > aren?t terribly expensive and might be nice to have around the shop anyway > (I could also do all my eyeglasses :-) > > In the video, the heads are submerged in IPA in a glass cylinder, which is > then placed in the ultrasonic bath. > > Has anybody on the list here done this and have tips/advice beyond what > can be seen in the video? It looked very effective! I?m also having a > little trouble sourcing the squat form glass graduated cylinder online. > > cheers, > ?FritzM. > >

8 years, 1 month

10
11
0 0

ultrasonic cleaning for disk heads

by fritzm＠fritzm.org

I watched with great interest one of curiousmarc?s recent Alto videos, wherein they clean a Diablo drive head ultrasonically. I?ve been struggling a bit with my restored RK05 drives to completely clean the heads after minor head crashes. Not being able to get them really sparkling clean makes me always worried about running the drives for more than a few minutes at a time, and a little nervous every time I spin them up?. Scrubbing and scrubbing and scrubbing with IPA and kimwipes just doesn?t seem to get all the crud off. I do have an alignment pack that I could use to re-align the heads after removing them for a proper cleaning this way. Decent ultrasonic cleaners aren?t terribly expensive and might be nice to have around the shop anyway (I could also do all my eyeglasses :-) In the video, the heads are submerged in IPA in a glass cylinder, which is then placed in the ultrasonic bath. Has anybody on the list here done this and have tips/advice beyond what can be seen in the video? It looked very effective! I?m also having a little trouble sourcing the squat form glass graduated cylinder online. cheers, ?FritzM.

8 years, 1 month

6
8
0 0

ISO: PDP-11/24 SLU bulkhead

by derschjo＠gmail.com

Hi all -- Finally got around to fixing the H777 supply in my 11/24 (in the "L-box" BA11-L chassis) and now I'm looking at getting it to do something.? First order of business is getting the console SLU hooked up, and I'm missing the bulkhead panel for it.? There's a 20-pin ribbon cable that runs from the CPU backplane to this panel, which breaks it out into two 25-pin D-sub serial ports. According to the schematics, this is P/N 54-14218. Anyone have one of these lying around?? Otherwise I'll just build something of my own... Thanks, Josh

8 years, 1 month

1
0
0 0

QSIC update - v6 Unix boots and runs

by jnc＠mercury.lcs.mit.edu

> From: David Bridgham > Our plan is to produce a Unibus board as well, we just chose the QBUS > first. For no particularly strong reasons; I had working QBUS machines, and prototyping cards, etc, etc. > (actually, this should work with Q18 QBUS systems as well) Goodness, never thought of that. Hmmm.. it's probably enough hassle to mod the software (who ever heard of a 'QBUS map' on a QBUS -11 - but you'd need it to give DMA devices access to high memory) that it's probably just easier to go out and get Q22 hardware. Does anyone even have a Q18 /23? I think that was only the A model, right? I've never seen one. > we plan to also implement the Able ENABLE+ functionality In other words, a 'USIC' with Able ENABLE functionality added in. > This will, of course, require you to modify your OS to support this > non-standard memory. We should be programming compatible with the ENABLE, so for OS's where ENABLE support already exists, it should be a compile-and-go. > Noel has already done so for v6 Unix. Back in the day, with a real hardware ENABLE. PWB1, actually (pretty much V6). It wasn't too much work; one just changes the address definitions for the User and Kernel PARs from the DEC addresses to the Able ones, and recompiles all the kernel modules that touch them. One then has to set up the DEC User and Kernel PARs (which I did in the assembler startup, which was the only source module that took any serious changes). (If your OS uses Supervisor mode, well, err... :-) There are some other minor tweaks needed, e.g. this comment: / these routines are used to access /dev/kmem and look at possible / NXM locations in the system. The reason it uses this mechanism / is that some locations to be examined are on the bus before the / ABLE map, and thus cannot be examined by playing with the ABLE / map regs, e.g. using the standard u access routines .globl _fkbyte, _skbyte .globl _fkword, _skword Noel

8 years, 1 month

2
1
0 0

QSIC update - v6 Unix boots and runs

by dab＠froghouse.org

> That sounds pretty awesome. Good job there! Thanks.? Feeling good today after a bit of frustration with development not going faster. > Do you know how hard it would be to take this design and make a UNIBUS > version? I have an 11/34 languishing under the bench in my hardware > lab and one of the principal reasons for the languishing is that I > don't have any drives to go with it. Our plan is to produce a Unibus board as well, we just chose the QBUS first.? A Unibus version of the hardware ought to be a fairly straightforward adaptation of the QBUS board while the QBUS modules in Verilog will just have to be replaced with Unibus versions.? The busses work pretty similarly so we're expecting that to also be relatively straightforward.? Yeah, I've told myself that before.? :-) For the Unibus (actually, this should work with Q18 QBUS systems as well), we plan to also implement the Able ENABLE+ functionality which would give 11/70 size memory.? We'll have some SDRAM onboard that we'll use for RAM disks but we'll carve out 4MB of that for machine memory and include mapping tables to access it.? This will, of course, require you to modify your OS to support this non-standard memory.? Noel has already done so for v6 Unix.

8 years, 1 month

1
0
0 0

QSIC update - v6 Unix boots and runs

by dab＠froghouse.org

For those of you who are following along with our QSIC project, today we booted v6 Unix successfully for the first time.? We'd first tried this a week or two back but discovered that Unix does use partial block reads and writes after all and I hadn't implemented those yet.? We're running this on an 11/23 using the QSIC with an SD card emulating a couple RK05s. Moving on to a small RAM disk next so we don't have to swap off the flash memory.? After that, either a larger RAM disk using the SDRAM or an RP11 to get larger disks than RK05s. We're getting close to the time when we need to think about making our own circuit board rather than using the wire-wrap prototype we've been having fun with so far.

8 years, 1 month

4
4
0 0

QSIC update - v6 Unix boots and runs

by jnc＠mercury.lcs.mit.edu

> From: David Bridgham > today we booted v6 Unix successfully for the first time. As in, the OS image was loaded from the SD card, then started up using only the SD card for 'disk'. So this is a pretty major milestone. It's been a long road (I just looked, and we started on this in the summer of 2015), but we're finally getting there! The Unix file system, including the OS and all the various bits and pieces needed, like /bin/sh, etc, was prepared on a simulator (stock V6 won't run on a /23, which has no switch register), and then loaded into the SD card using 'dd' running on a Linux box. Our emulated RK11 doesn't do a perfect job of emulating an RK11 yet (e.g. for some reason we haven't yet looked into, the BDV11 ROM code won't load the bootstrap off the 'disk'; Dave had to manually load in an RK bootstrap using ODT), but enough is now working to let Unix load and run. > Unix does use partial block reads and writes after all For swapping, not for file-system I/O (which is all block-based). > We're getting close to the time when we need to think about making our > own circuit board rather than using the wire-wrap prototype we've been > having fun with so far. At which point we'll be able to supply them to anyone who wants one... It will be a while yet, but I think we are 'over the hump' on the project, with the OS booting and running properly. Noel

8 years, 1 month

1
0
0 0

AT&T 615MT terminal docs or info

by web＠loomcom.com

Hi folks, I have a couple of AT&T 615MT terminals I'd like to get more information on. I understand they're capable of running Layers (mouseless) on System V UNIX, but other than that I have no idea what features they have. If you have any 615MT documentation, could you please let me know? All the best, -Seth -- Seth Morabito https://loomcom.com/ web at loomcom.com

8 years, 1 month

1
0
0 0

Computer Museum in Brno, CZ

by lproven＠gmail.com

I was at a small technical conference last weekend (www.devconf.cz) at the Faculty of Informatics, Brno Masaryk University. https://www.fi.muni.cz/ https://en.wikipedia.org/wiki/Masaryk_University What I didn't know is that it has its own small museum of computing. I enjoyed it a lot. There's a good range of Sinclair kit and clones, including various real ZX Spectrum machines (48, Plus, 128 with vanishingly rare numeric keypad, Plus 2, Plus 2A, Plus 3, Interface 1 and Microdrives, MGT +D, Opus Discovery) and clones including Soviet (Orel BK-08), Polish (CZ Spectrum 48) and Czechoslovakian (Didaktik Gama, Kompakt and Kompakt M, with rare built-in 3?" floppy drive) and a SAM Coup?. There are other Czechoslovak machines, micros and minis and mainframe parts. They have an HP 3000, a PDP-11/34 and multiple RL02s, with both VT-120 and VT-220) and a Soviet PDP-11 clone. Mechanical and early electronic calculators. And a mediaeval clock! In the unlikely even folk are passing, it's well worth a visit. I spent a happy couple of hours in there. -- Liam Proven ? Profile: https://about.me/liamproven Email: lproven at cix.co.uk ? Google Mail/Hangouts/Plus: lproven at gmail.com Twitter/Facebook/Flickr: lproven ? Skype/LinkedIn: liamproven UK: +44 7939-087884 ? ?R (+ WhatsApp/Telegram/Signal): +420 702 829 053

8 years, 1 month

1
0
0 0

ADV11-A vs. ADV11-C and 22-bit Bus

by mark＠matlockfamily.com

Jerry, Noel, Thanks for your feedback. Also, Noel was correct on the typos I made on DD1, DE1, and DF1. I was copying from a scanned .pdf and some strange OCR translation was occurring and I missed correcting those. Yesterday I stuck the ADV11-A in a MINC-23 with 256 KB memory and verified that it worked. The CSR is different than a MNCAD and the voltage range bits may be different, but when I connected a 40 pin cable and a IDE to screw terminal connector on the I could match up the +4.5 and -4.5 reference voltage signals with the diagram with the screw terminals and then make voltage changes on channel 0 and see the A/D counts change. Today, I cut the BDAL18 BC1 trace to ground, verified it still worked in the MINC, then moved it to a PDP-11/73 RSX11M+ system I use for hardware testing. The RSX system was not configured for this card and the default 400 vector conflicts (I think) with the bottom of kernel stack so I?ll need to either move the vector switches on the card down or re-sysgen this test RSX system. Thus, the only quick testing I could do is via the CSR. Also, to make it easy to see values change I used the 2 digit LED display next to the console port to display the least significant bits of the readings. This is a technique I use to debug interrupt routines as you can write a 2 digit octal number with a simple MOV. I didn?t loop on the status bit because RSX is multiuser/tasking, but just used a 1 second mark time to assure the conversion was done. This would be changed to an interrupt service routine once I fix the vector issue. Using the LED display made the test code very simple: .TITLE ADTST .ENABL LC .IDENT /280118/ ; TKB commands: IDLE/PR:5/-FP=IDLE .MCALL EXIT$S MRKT$S WTSE$S LEDCSR = 177524 ADCSR = 170400 ADBUF = 170402 .even LEDS: MOV #177777,R0 MOV #100,R1 ; COUNT 10$: MOV R0,@#LEDCSR ; Display inverted contents of R0 CLR @#ADCSR ; Clear A/D status register INC @#ADCSR ; START A/D MRKT$S #1,#1,#2 ; Set Mark Time for 1 sec on eflg #1 WTSE$S #1 ; Wait for eflg #1 MOV @#ADBUF,R0 ; Get A/D value BIS #177700,R0 ; Set all bits high but lower 100 ; DEC R0 ; this line counts to 77 octal on display SOB R1,10$ MOV #177777,@#LEDCSR ; Reset LEDs to . EXIT$S .END LEDS So Noel and Jerry, you are correct it is that simple. If the A/D was DMA, that would be another situation (like the RX02 controller). Best Regards, Mark

8 years, 1 month

2
1
0 0

DEC H7260 PSU fault

by jules.richardson99＠gmail.com

Hi all, I mentioned this in the thread where I'd asked about basic Microvax II info, but it may have got lost in traffic... The machine's H7260 PSU is somewhat unwell - one of the internal +5/12V supplies appears to be healthy, but the other has outputs which are sitting at around 2.5V (both on the 5V and 12V rails) under a test load. Initial questions... 1) Are schematics are available online? I couldn't find them (either under the DEC p/n or the Astec AA13010 one), but perhaps they're buried in schematics for a specific DEC machine somewhere. 2) Upon initial glance, the 'first' board of the three in the PSU module appears to be a pair of control relays, bridge rectifiers and capacitors, supplying +/- DC voltages to the two individual PSU boards. Does anyone know if I can disconnect these from the PSU boards safely* and measure their outputs, and if so what voltages I should expect to see? That might be a good initial test before pointing a finger at the PSU board associated with the low outputs. * I mean without component damage - I expect they might be sitting at a significant DC voltage, so there's an obvious personal safety aspect too ;-) cheers Jules

8 years, 1 month

9
25
0 0

Can you run Apple Lisa Workshop and LIsa OS on the same Hard-drive?

by coreyvcf＠gmail.com

Or do I need an external profile for my 2/10 if I want to still use LOS. Thanks, Corey corey cohen u??o? ???o?

8 years, 1 month

4
7
0 0

ultrasonic cleaning for disk heads

by jnc＠mercury.lcs.mit.edu

> From: Mark J. Blair > I have a single decpack cartridge ... It's marked "decpack 2200 BPI-12" > and has 12 sector notches in the hub. Does that mean that it was most > likely used with an RK05 drive in a PDP-11 system? Yes. > I hope that I can procure a matching drive for it one of these days The come by occasionally on eBait; here's the most recent one (October last year): http://www.ebay.com/itm/122452738128 They're usually mildly pricy, alas. Noel

8 years, 1 month

1
0
0 0

DL10 documentation

by lars＠nocrew.org

Hello, Richard Cornwell wants to implement DL10 for his KA10/KI10 simulator, but he doesn't have any documentation for it. Any leads?

8 years, 1 month

2
3
0 0

ADV11-A vs. ADV11-C and 22-bit Bus

by jnc＠mercury.lcs.mit.edu

> From: Mark Matlock > Any device which uses backplane pins BC1, BD1, BEl, BF1 or DC1, 001, > DEl, OF! Those last are probably typos for "DD1, DE1, DF1". > Several other pins are also tied to ground on that connector such as > BC2, BJ1, and BT1. Yeah, those are all standard Q22 ground pins. > When I look at the Board connector B pin C side 1 (component side) the BC1 > pin is tied to ground. .. So it looks like if I simply cut the trace > between the BC1 finger and its connection to ground on the board it > would become Q22 compatible. > Is it that simple? That would be my take on it, yes. As Jerry Weiss mentions, since it's not a DMA device, once you do that, it should be Q22-capable; all QBUS devices are supposed (per the QBUS spec) to use BBS7, along with BDAL0-12, to listen for register accesses, so the fact that it's not listening to BDAL18-21 should not be an issue. (Odd factoid: various QBUS CPU's drive various combinations of BDAL13-21 during references to the I/O page; I forget the details off the top of my head, but Dave Bridgham and I were just looking at that.) Noel

8 years, 1 month

1
0
0 0

3 computing events

by c.murray.mccullough＠gmail.com

Three ?computing? events are happening: 1) The i-Pad was introduced by S. Jobs 8 yrs. ago and defined a ?new? computing paradigm for the masses. The reason I mention this event is because a young friend(20 yrs. old) said ?That?s ancient computing!? What is one to make of classic-computing then? 2) Bitcoin mining ? The energy usage is extreme because of GPUs. Was 16-bit computer era, employing the 80287, such an energy hog? 3) INTEL doesn?t seem to have been hurt by Meltdown & Specture financially- speaking. Had excellent earnings and profits for the last quarter but ?may? change this quarter. However, INTEL marches on going from 4004 to 7980XE. AMD was/in the picture but financially-wise? Happy computing all! Murray J

8 years, 1 month

2
1
0 0

TESTFDC

by binarydinosaurs＠gmail.com

I?d like to thank whoever it was who added the Abit K8V Pro/Winbond W83627HF with its test results to the TESTFDC page for writing SSSD disks. I?ve been trying to get a similar setup going for a fortnight now and last week found this motherboard on e*ay for Not Many UK Pounds. Coupled with a scrap Athlon64 system from work and a scratched Windows98 CD I eventually got it going earlier and can now read/write single density floppies meaning I can archive the disks I got with my Research Machines 380Z :D Typical of my luck a contact has also found an Adaptec 1522A that he?ll hopefully send me too, then I?m covered for all eventualities. Now where did I put that 8? drive... ? Adrian/Witchy Binary Dinosaurs - Celebrating Computing History from 1972 onwards w: binarydinosaurs.co.uk <http://binarydinosaurs.co.uk/> t: @binarydinosaurs f: facebook.com/binarydinosaurs

8 years, 1 month

6
11
0 0

chyron 8 inch disks chyron IV - m4100ex-- sports disc - fonts - font load front compose etc

by couryhouse＠aol.com

chyron 8 inch disks chyron IV - ?m4100ex-- ? sports disc - fonts - font load?front?compose etc does anyone had ? this ?chyron and ?firing it ?up? ? some ?discs ?nice ?and ?clean come ?have ? ? foam ?stuck to?envelopes?.. ? maybe ?you have?something? we ?can use ?here.?since? I dont think ?we ?will have the chyron? ? ed#

8 years, 1 month

1
0
0 0

KK11-A / PDP-11/34 Cache module print set

by jnc＠mercury.lcs.mit.edu

> From: Marc Howard > what's the difference between a KK11-A and KK11-B? KK11-A -> -11/34 KK11-B -> -11/44 Noel

8 years, 1 month

1
0
0 0

KK11-A / PDP-11/34 Cache module print set

by jnc＠mercury.lcs.mit.edu

> From: Mattis Lind > I have now scanned the MP00574 / KK11-A printset I have received. Thank you very much for doing that! Those prints were one of the main missing PDP-11 print sets. > Hope the quality is good enough. It looks good to me. Noel

8 years, 1 month

2
1
0 0

ADV11-A vs. ADV11-C and 22-bit Bus

by mark＠matlockfamily.com

I have an ADV11-A that I would like to use in a Q22 RSX11M+ system. The ADV11-C will work in a 22-bit Bus system from what I understand but the ADV11-A was made for 18 bit Bus systems. In the OEM Micronote book, Note 5, it states: Any device which uses backplane pins BC1, BD1, BEl, BF1 or DC1, 001, DEl, OF!, for purposes other than BDAL18-21 is electrically incompatible with the 22-bit bus and may not be used without modification. Further down it lists the ADV11-A as a device that does not meet the requirements for a Qbus 22-bit system because: ADV11 (A012). A/D Converter. (Use of BC1 for purposes other than BDAL18) When I look at the Board connector B pin C side 1 (component side) the BC1 pin is tied to ground. Several other pins are also tied to ground on that connector such as BC2, BJ1, and BT1. Other than BC1 which is BDAL18 being tied to ground the pins BDAL19 (BD1), BDAL20 (BE1), And BDAL21 (BF1) are all not connected to anything. This also matches the field engineering print for ADV11-A (B-TC-ADBV11-A-1) where BC1 is shown tied to ground on page 21. So it looks like if I simply cut the trace between the BC1 finger and its connection to ground on the board it would become Q22 compatible. Is it that simple? Thanks, Mark Matlock

8 years, 1 month

2
1
0 0

RK05 rear filters/brackets

by jnc＠mercury.lcs.mit.edu

> From: Fritz Mueller > My restored RK05 drives are missing their rear air filters (the ones that > cover the back of the card cage). The formal DEC name is "prefilter" (since the air that comes in here goes through the cards, and the air blower, and then through the absolute filter on the way to the pack), and the metal thing that holds it on is the "frame". > I'd really appreciate a few photos so I can see what these looked like > and how they were put together? Here you go: http://gunkies.org/wiki/RK05_disk_drive#Prefilter_frame pictures and all the dimensions I could think of to measure. (I didn't bother with the hole locations, since you can get them off the drive.) The little hand-knob-bolts are DEC standard (used elsewhere too). Noel

8 years, 1 month

2
1
0 0

RK05 rear filters/brackets

by fritzm＠fritzm.org

My restored RK05 drives are missing their rear air filters (the ones that cover the back of the card cage). I would like to fashion some sort of replacements. If anybody here has access to drives with the original filters, I?d really appreciate a few photos so I can see what these looked like and how they were put together? cheers, ?FritzM.

8 years, 1 month

2
3
0 0

KK11-A / PDP-11/34 Cache module print set

by mattislind＠gmail.com

I have now scanned the MP00574 / KK11-A printset I have received. https://drive.google.com/open?id=0B-rp4vyPPYu1U0tvT0Q5enFpVkZYSW5mMUV4dnJPQ… Hope the quality is good enough. BTW. I am looking for the H8822 over the top connector. I just ask here in case anyone has a spare. Otherwise it wouldn't be that much of a hassle to make my own. I do have the H8821 as a trade in case that is of interest. /Mattis

8 years, 1 month

1
0
0 0

SCSI Controller Hanging...

by harper＠secureoutcomes.net

Hello Plamen - I use the SCSI controller that is built into the MVME177 transition module. No, when I RESET the system, I just press the RESET button on the processor board - usually when it is hung with my software. On this system, I only code in 68K assembly and so I do see the "occasional" hang :) Is the "SCSI reset option" part of the 68K/BUG RESET command? In my documentation - and I easily may not have the latest documentation - I only see RESET options to force a COLD or WARM start on hardware RESET. The documentation that I have also cautions: "...may cause the disk controller to be out of phase with respect to the disk configuration tables in memory", which certainly makes sense. However, I do not modify any of those tables from system default. I appreciate your input. Regards, Jack Evergreen, Colorado At 11:57 AM 1/23/2018, Plamen Mihaylov wrote: >What SCSI controller are? you using - MVME320, 327 or 328 ? >Do you reset the MVME177 board using RESET >command from 177bug> along with SCSI bus reset? option? > >Best regards, >Plamen > > >On Tue, Jan 23, 2018 at 6:33 PM, Jack Harper via >cctalk <<mailto:cctalk at classiccmp.org>cctalk at classiccmp.org> wrote: > >Greetings to the List from the Snowy Rocky Mountains. > >Beautiful clear sunny day here at +9F :) > >The SCSI controller on the 68K development >system (VMEbus) that I have cobbled together >occasionally hangs after I reset one of the >processor boards (there are four MVME177-005 68060 boards in the VME rack). > >The hang then happens when my software touches >the SCSI drives via the ROM'd 68K/Bug I/O >primitives and the hang will not go away even >after another reset until I cycle power. > >I have never before dealt with SCSI as a >programmer - does this sound like something is configured incorrectly? > >There is not much to configure. > >I point out that I am not certain that I have >the termination resistors correct. > > >Thoughts? > >I appreciate any advice. > > >Regards, > >Jack >Evergreen Colorado > > > > > >---------------------------------------------------------------------------------- >Jack Harper, President >Secure Outcomes Inc >2942 Evergreen Parkway, Suite 300 >Evergreen, Colorado 80439 USA > ><tel:303.670.8375>303.670.8375 ><tel:303.670.3750>303.670.3750? (fax) > ><http://www.secureoutcomes.net>http://www.secureoutcomes.net >for Product Info. > ---------------------------------------------------------------------------------- Jack Harper, President Secure Outcomes Inc 2942 Evergreen Parkway, Suite 300 Evergreen, Colorado 80439 USA 303.670.8375 303.670.3750 (fax) http://www.secureoutcomes.net for Product Info.

8 years, 1 month

2
1
0 0

New DEC items from Sellam's collection for sale

by sellam.ismail＠gmail.com

Hey DEC-heads! I added some more boards to my DEC list: http://www.vcfed.org/forum/showthread.php?61371-Sellam-s-DEC-Hardware-Softw… Please inquire directly via e-mail to <sellam.ismail at gmail.com> for fastest response. Thanks! Sellam

8 years, 1 month

1
0
0 0

Interest in Teac FD235J drives and FC-1 boards?

by cclist＠sydex.com

I've got a fellow with a stock of Teac FD235J (2.88) drives and about a dozen bare Teac FC-1 SCSI boards. I'm trying to gauge interest--I don't think he wants to sell them onesy-twosy, but I'm willing to act as intermediary for single-unit purchases if there is sufficient interest. --Chuck

8 years, 1 month

6
14
0 0

Televideo keyboards

by sales＠elecplus.com

I am clearing these out of my stock: 4 are beige, with no PN on the back. They have a small RJ9 type connector. 3 are missing one or more caps. 4 are dark on top, and beige on the back. There is no PN. These have the save telephone style connector. All are complete. These have not been tested or cleaned. I would love ro send all 8 of these to 1 person J Pics can be seen here: https://drive.google.com/drive/folders/1GvCajMJk1EeSLjpGnl4LsGbJPH6l-B2H?usp =sharing Cindy Croxton Electronics Plus 1613 Water Street Kerrville, TX 78028 830-370-3239 cell sales at elecplus.com --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus

8 years, 1 month

2
1
0 0

Keyboard "enthusiasts"

by ggs＠shiresoft.com

?are the bane of my existence and should all rot in hell. Sorry, I just received an email from a ?keyboard enthusiast? who was looking for various IBM 327x keyboards and wanted to know if I could help him and I needed to vent a little. I sent him a polite ?no way in hell? response but I?m still angry about it. These terminals are hard enough to find. And more often than not, the keyboard is missing because some ?enthusiast? thought it would be cool to convert it to a PC keyboard. ARG! And of course the keyboards that they want are the ?typewriter? keyboards (all of my 3278 terminals have the ?data entry keyboard?). TTFN - Guy

8 years, 1 month

14
22
0 0

Ethernet cable (Was: Sun3 valuations?)

by jnc＠mercury.lcs.mit.edu

> From: Grant Taylor > I can fairly clearly see the RG-8/U on the side of the cable that David > is holding ... Sure, there was probably a better alternative that came > along after, with better shielding and marking bands. You keep mixing up the 3 Mbit and 10 Mbit. _They were not the same_. (I _really_ need to retake those photos with a ruler in them...) The stuff with better shield, marking bands, etc is 10 Mb; it's about 1.05cm in diagmeter. The black stuff (the stuff Dave is holding in the video) is 3Mb; the piece I have is .95 cm. The video, perhaps confusingly, shows a mix of 3Mb and 10Mb gear. The small aluminium sheet transceiver (the one attached to the black cable when Dave is doing his spiel) is the 3Mb one; the others are 10Mb. Noel

8 years, 1 month

6
8
0 0

IBM 3101 keyboard - was Re: Keyboard "enthusiasts"

by ian.primus.ccmp＠gmail.com

Well, let me know if you find another one. Or, if anyone else has one they'd be willing to part with for reasonable money. The regular 3278 type keyboards won't work on an IBM 3101 - and those are a lot more common. The one I need looks like this: https://i.imgur.com/1Cz8hMi.jpg It has the configuration switches to set the baud rate and such under that panel at the top. Without this particular keyboard, the terminal I have is useless - you can't even have it just receive/display data, since the configuration switches are in the keyboard. On Wed, Jan 24, 2018 at 1:42 PM, Electronics Plus <sales at elecplus.com> wrote: > I had no idea you wanted one! I just sold 1 in superb shape, but yes, the fellow did pay a fortune for them. He is in Canada. > > -----Original Message----- > From: cctalk [mailto:cctalk-bounces at classiccmp.org] On Behalf Of Ian Primus via cctalk > Sent: Tuesday, January 23, 2018 10:40 PM > To: Guy Sotomayor; General Discussion: On-Topic and Off-Topic Posts > Subject: Re: Keyboard "enthusiasts" > > On Tue, Jan 23, 2018 at 12:35 PM, Guy Sotomayor via cctalk <cctalk at classiccmp.org> wrote: >> ?are the bane of my existence and should all rot in hell. >> >> Sorry, I just received an email from a ?keyboard enthusiast? who was >> looking for various IBM 327x keyboards and wanted to know if I could >> help him and I needed to vent a little. > > Ugh. Don't get me started. I collect terminals. Missing keyboards is a perennial problem, but it's gotten WAY worse in recent years. I have two terminals here that are missing the keyboards because some "enthusiast" bought them out from under me during an eBay transaction. > > So, now I have an Infoton and an IBM 3101 here that are completely worthless because the keyboards are missing. > > And I have no hope of ever finding replacements - especially for the IBM 3101, because that's one of the ones the keyboard jerks really seem to love because it's the older beam spring kind. > > Grr..... > > > --- > This email has been checked for viruses by Avast antivirus software. > https://www.avast.com/antivirus >

8 years, 1 month

2
1
0 0

Keyboard "enthusiasts"

by jnc＠mercury.lcs.mit.edu

> From: TeoZ > mouse (optical mice are better then the old ones with balls). I even > keep old ball mice around ... and those do wear out) Huh? I've got old ball mice I've been using for years; they don't wear out. The wires do get flaky after a long period of use (at which point I stop using them - easier to switch than to chop an inch off the wire - the issue is where it goes into the mouse), and you do have to clean them regularly, but other than that... Noel

8 years, 1 month

2
1
0 0

Ethernet cable (Was: Sun3 valuations?)

by jnc＠mercury.lcs.mit.edu

> From: Grant Taylor > According to the following page, it was not RG-8 cable ... As such it > was purpose built. The 10MBit cable, yes; it was custom (you can see 'Ethernet' printed on the chunk in the picture). (I'd forgotten about the black stripes! I'm not sure we really bothered to follow that.) The earlier 3Mbit I'm not so sure about - that has the air of standard commercial coax. I wish there was a picture of a 3Mbit transceiver, clamp-on holder, etc! Does the CHM or LCM have them with their Alto stuff? Noel

8 years, 1 month

8
17
0 0

More Alto remarks

by mark.kahrs＠gmail.com

I had forgotten about OrBit. According to this very nice document: http://xeroxalto.computerhistory.org/Indigo/Spruce/documents/.orbitguide.pr… ... the Orbit hardware was 4 cards in the Alto II backplane. As I recall, the SLOT interface was only 1 card; it was connected to a slower speed printer. The only modification to the Alto: wire wrapping the task signals (don't ask me how I know...) And yes, I agree, only the high bandwidth I/O used tasks. The use of tasks and "time sharing" the Alto processor innards is one of the Alto's real treats.

8 years, 1 month

1
0
0 0

Apollo Software

by bill.gunshannon＠hotmail.com

Is there any interest or value in copies of SR7.0 "Aegis" or should I just scratch them and add them to my other 8" disks? (Yes, I used to have an Apollo in my house!! Made a great heater during those long cold winters.) bill

8 years, 1 month

8
13
0 0

eBay: PDP-11/34 chassis available

by jnc＠mercury.lcs.mit.edu

So this lot: https://www.ebay.com/itm//192436422371 claims to be an -11/04, but there are no boards in it. However... the first backplane (of two) is a DD11-P, which is the backplane for the /34 as well as the /04. And there are /34 CPU boards available on eBait at the moment. Pick up a pair (the seller will probably negotiate on price), add an M9301/M9312, and a DL11 or DL11-W (also available), and away you go. Noel

8 years, 1 month

2
1
0 0

HP 1000 system in Europe

by hp-fix＠xs4all.nl

I'm selling one of my HP 1000 systems to make space.. It's on ebay, item: 263456857154 Located in the Netherlands -Rik

8 years, 1 month

1
0
0 0

Ethernet cable (Was: Sun3 valuations?)

by jnc＠mercury.lcs.mit.edu

> From: Chuck Guzis > On 01/23/2018 04:04 PM, Al Kossow via cctalk wrote: >> they mention they used CATV technology (where the vampire taps come >> from) > Wasn't that ChaosNet? The CHAOS net (capitalization varied, but original docs usually use two words) hardware did use the heavy-duty CATV cable (not the indoor stuff; I have a chunk of the heavy-duty kind they used too :-), but not vampire taps; the transceivers had T-connectors on them, and to install one, one put connectors on the ends of the cable segments, and screwed them onto the T-connector. Noel

8 years, 1 month

1
0
0 0

2026

2025

2024

2023

2022

2021

2020

2019

2018

2017

2016

2015

2014

2013

2012

2011

2010

2009

2008

2007

2006

2005

2004

2003

2002

2001

2000

1999

1998

1997

test-drb