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

FS: HP 98630A Breadboard Interface Protoboard for HP 9000 Series 300/200

by systems.glitch＠gmail.com

link: http://www.ebay.com/itm/272663229522 Looks NOS, definitely never had anything soldered in the prototype area. Thanks, Jonathan

9 years, 1 month

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ISO: Solid State Music IO-8 S-100 Serial Board Manual

by systems.glitch＠gmail.com

Just purchased a Solid State Music IO-8, apparently the manual is not available online, and isn't listed in Herb's documentation collection. Anyone have it? Looks like it's eight Intel 8251A serial ports. Thanks, Jonathan

9 years, 1 month

1
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AT&T 3B2 list

by alan＠alanlee.org

A few people on the Sun help rescue list raised interest for AT&T 3B2 community projects. So I've created a mailing list to help segregate traffic for detail oriented 3B2 related topics. Seth Morabito has invested lots of effort into adding WE3K chip set and machine emulation to SIMH. I'm interested in building some new CIO boards for the machines. I would also like to eventually mirror all 3B2 related information to 3b2archive.org. And other contributors and lurkers are signing up too. Please see details in the quoted message below. Thanks, -Alan On 2017-05-08 11:17, Alan Hightower wrote: > I've created a mailman list 3b2info at retrotronics.org with an alias info at 3b2archive.org. The list info page is here: > > https://www.retrotronics.org/mailman/listinfo/3b2info [1] > > Maybe the first order of business is to enumerate interests and identify potential projects. > > -Alan > > On 2017-05-05 16:50, Seth Morabito wrote: > * On Tue, May 02, 2017 at 02:45:51PM -0500, Jerry Kemp <sun.mail.list47 at oryx.us> wrote: [...] > I have CC'ed Mr. Bill in this note, and I suppose ultimately, we will either > have a new 3b2 home/mailing list, or we will need to find some other place > to host it. > Have we heard anything back yet? Perhaps I'm being over-eager, but I'd > love to see things move forward. > > -Seth Links: ------ [1] https://www.retrotronics.org/mailman/listinfo/3b2info

9 years, 1 month

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DEC Unibus backplanes

by useddec＠gmail.com

I have the following backplanes for sale. Some have boards in them, some don't, but I might have the boards. Please call me with any questions or offers. Shipping from 61853. DD11-DK DDV11-DK MF11-U/UP RH11 RK611 11/44 11/84 Thanks, Paul

9 years, 1 month

1
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Vintage computers for sale

by asc135＠gmail.com

A friend of mine was asking if anyone wanted an old CoCo 1 or 2, Apple IIc, TI 99/4A and one or two other machines he was looking to rehome. I realized I had several vintage machines that I'd like to rehome myself. We were discussing the possibility of collaborating on a vintage swap sale of some sort. Then he went ahead and created a facebook group to post pictures, etc. where he has some of his equipment listed. So I have a couple of questions... Is there already a well known online swap meet for vintage computer gear? (i.e. NOT eBay!) I'd rather not duplicate the effort and fragment the market further. If there isn't, I'll be putting up a few machines on my friend's facebook group at https://www.facebook.com/groups/448700415476109/ . I have a few TRS-80 Model 4's, a couple of Model I's, a couple of Model II's, a Cromemco Z-2D (with OEM labels on the face) which used to be a weather graphics computer), a couple of Columbia M64 Shoebox CP/M computers, and a few Coco 2's. The bulk of the people on the facebook swap group (including myself) are located in Central Indiana. I'll share the available computer details here on the list after I've done the writeups and taken pictures. Thanks and have a great day! Amardeep (a/k/a Marty, AC9MF)

9 years, 1 month

3
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Holmes Engineering DX-3D

by bill.gunshannon＠hotmail.com

Hey TRS-80 fanatics.... Anybody have any info on this controller? I have one but the controller chip is missing. And, I don't really know if it would work if it had one. But, if I could find out what the chip was and get one it seems this supported 8" drives as well as the usual 5.25". A user manual would be helpful, too. :-) bill

9 years, 1 month

2
1
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salling E series ibm as/400

by lyokoboy0＠gmail.com

I picked up an e series ibm as 400 a while back. it boots/ipl's a working licenced install of os/400. I have a single terminal and misc related cables. everything needed is there. I am open to offers on the machine. Just looking to break even, not make a fortune. --Devin

9 years, 1 month

1
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VCF-SE 5.0 Videos Uploaded

by alan＠alanlee.org

[cross posted] I was able to find time to edit and post speaker videos from this year's Vintage Computer Festival Southeast held last weekend in Atlanta. Amazingly I did it within one week and not a year or more! Here is the speaker summary and bios from the VCFed website: http://vcfed.org/wp/festivals/otherevents/vintage-computer-festival-southea… [1] And you can find the videos on the AHCS Vimeo channel: https://vimeo.com/user50868990 [2] Don French discusses the genesis of the TRS-80 Model I at Tandy/Radio Shack: https://vimeo.com/216109117 [3] Andy Hertzfeld from Apple talks Apple II and his journey to Cupertino: https://vimeo.com/216104204 [4] Zach Weddington hosts a special screening of his Viva Amiga documentary film followed by a panel discussion moderated by Adam Spring: https://vimeo.com/216081365 [5] Chuck Peddle via Skype discusses the history of the personal computer and his current projects: https://vimeo.com/216072422 [6] I've also continued to work on the 4.0 backlog. I've added David Larsen's discussion on the Bug Book series and his computer museum here: https://vimeo.com/216398748 [7] And as-posted from last year, Bil Herd discusses his early Commodore days: https://vimeo.com/161861581 [8] I still have Ray Holt, Jerry Mannock, Mary Hopper, and podcast videos >from 4.0 in my work queue. 3.0, 2.0 and 1.0 to come (Jason Scott, Robert Uiterwyk, Jonathan Zufi, Carl Helmers, Robert Tinney, Dick Huston, Dan Kottke, and others). But no ETA on finishing as of yet, sorry. There are some flaws in video (Andy's lectern mic - doh!) and audio (damn kids!), but they turned out ok. They are all open to free download. But please give proper attribution when sharing. On behalf of the entire Atlanta Historical Computing Society who work hard every year to make this happen, thanks and enjoy! We do this stuff for you guys! Alan Hightower - President Links: ------ [1] http://vcfed.org/wp/festivals/otherevents/vintage-computer-festival-southea… [2] https://vimeo.com/user50868990 [3] https://vimeo.com/216109117 [4] https://vimeo.com/216104204 [5] https://vimeo.com/216081365 [6] https://vimeo.com/216072422 [7] https://vimeo.com/216398748 [8] https://vimeo.com/161861581

9 years, 1 month

1
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AT&T UnixPC

by bill.gunshannon＠hotmail.com

We have any people here with an interest in the UnixPC? I have one left here that I probably need to part with. It's a little dirty having spent 20-some years in an attic but I just powered it up and it works other than the hard disk. It's got 1Meg on the motherboard and no external cards. It boots diagnostics from the floppy but won't boot from the hard disk and when I run diagnostics it gets read errors. I guess that means it might be good and just require a re-initialization and reload of the software. It's way to much for me to try to ship so it would need to be someone either near Scranton, PA or who might be travelling this way at some point this summer (but not the end of May/beginning of June as I will be in Alaska then.) It can be had for a couple cases of beer. :-) I also think I have a set of both 2.0 and 3.? floppies which would make reloading it easier. bill

9 years, 1 month

1
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rainbow parts

by useddec＠gmail.com

Hi Steven, Did you see my post on Rainbow parts? Paul

9 years, 1 month

1
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Philips Training Manual Introduction to Magnetic Disk Drives

by fjkraan＠xs4all.nl

Hi All, For all who missed the 1980's technical details of diskdrives or lost the details in the mean time, I just put the "Training Manual Introduction to Magnetic Disk Drives" online which Philips provided in 1987 as part of a Field Training. The rest of the documentation are technical manuals of disk drives like the Shugart SA455/456, SA400L, SA800/801 and CDC 9406. Assuming those are available, so I won't scan them This manual covers floppy drives and hard disks, the latter with ST506 and SMD interfaces. http://electrickery.xs4all.nl/comp/divcomp/doc/TM_AItMDD.pdf http://electrickery.hosting.philpem.me.uk/comp/divcomp/doc/TM_AItMDD.pdf Enjoy & greetings, Fred Jan

9 years, 1 month

1
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HP 07970-60580 tape head assy

by useddec＠gmail.com

>From a 7970-E? please contact me off list with questions and offers. Shipping $10 within US. Thanks, Paul

9 years, 1 month

1
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Displaywriter disks

by aek＠bitsavers.org

I got lucky, and this ebay lot http://www.ebay.com/itm/382069259067 contained single density copies of textpack 4, four copies of textpack 6, chart pack, report pack, bisync, async, and the training disks images under http://bitsavers.org/bits/IBM/Displaywriter -- these are very difficult to find

9 years, 1 month

1
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Complete IBM PCjr system for sale

by sellam.ismail＠gmail.com

I have a complete/working IBM PCjr system for sale. It includes monitor, manuals and software, all in excellent condition. Details are here: http://www.vcfed.org/forum/showthread.php?57574-IBM-PCjr-with-both-regular-… Thanks! Sellam

9 years, 1 month

1
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Re: Extracting files off “unknown” 8 inch disks. Any thoughts…

by terry＠webweavers.co.nz

>And yet, if there were an RX02 somewhere on this VAX, I don't believe you'd be able to read them at all... RX02 seeming more likely with a VAX. Interestingly PUTR, does seem to accommodate this, and the kind of system I have set up (i.e. 1.2 MB 5.25 inch in CMOS even though it's an 8 inch drive). From the readme file... "SET x: type Sets the drive type for one of the four possible PC floppy drives A:-D: (note that actual PCs rarely have more than one or two floppy drives). The type must be RX01, RX02, RX03, RX50, RX33, RX24, RX23, or RX26. The default value for each drive is whatever was stored in CMOS memory by the ROM BIOS setup utility. This command may be useful when the drive types stored in CMOS RAM are incorrect for some reason. It's also helpful when an 8" drive, or a real DEC RX50 drive, has been attached to the PC using a D Bit "FDADAP" adapter, or something equivalent. There is no standard for representing these drive types in CMOS RAM. Using real RX50 drives (or other 300 RPM quad-density drives such as the Tandon TM100-3 and TM100-4) is different from RX33s (which is what PUTR calls regular PC 1.2 MB drives) because the motor speed is slower, so the FDC chip must be programmed for a lower data rate to match." I didn't spend too much time on PUTR as it seemed to be more for the older DEC OSs rather than Vax VMS. VMS wasn't mentioned as an option in PUTR which is why I spent more time experimenting with ODS2, which was VAX specific. And...as I said, PUTR tries to figure out what DEC OS (if any) is on the disk and failed to find one. Maybe I should play around with the switches in PUTR more before I give up though.... Terry

9 years, 1 month

3
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Beautifully-posed photos of various kinds of retro kit

by COURYHOUSE＠aol.com

Nice work Liam! great to see things displayed in a 'setting' rather than just computers on shelves! KUDOS! Ed# In a message dated 5/3/2017 4:52:30 A.M. US Mountain Standard Time, cctalk at classiccmp.org writes: >From the Apple ][ up to PowerMac G4s. So, possibly a bit new for many of you folk, but I enjoyed them and thought others might too. http://podstawczynski.com/retro/beauty_shots.html -- Liam Proven ? Profile: https://about.me/liamproven Email: lproven at cix.co.uk ? Google Mail/Talk/Plus: lproven at gmail.com Twitter/Facebook/Flickr: lproven ? Skype/LinkedIn/AIM/Yahoo: liamproven UK: +44 7939-087884 ? ?R/WhatsApp/Telegram/Signal: +420 702 829 053

9 years, 1 month

2
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DEC compatables

by useddec＠gmail.com

Please contact me off list with questions and offers. $10 S/H within US. Ask about overseas ABLE Quinverter DILOG DQ130 DQ686 Emulex CS09 SC01 SC03 SC21 SC31/BX TU11 TU121 TU131 UD33 hex QD01 QD21 QD241 QT131 Thanks, Paul

9 years, 1 month

1
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DEC Rainbow, Pro 380 parts available,

by useddec＠gmail.com

I have the following Rainbow/ PRO parts for sale. I would like to sell the the mother board and everything on it. If I don't get offers for them, I might split them up. I might have more loose parts as I continue digging. No complete units with cases at this time. I'm waiting for some to arrive I bought over a year ago. Please contact me off list with any questions and offers. Shipping is from 61853, and will be $15 per PC100 mother board, overseas please ask me for rate. I plan to ship everything sold next week. UNIT 1: PC100B motherboard RX50 controller 54-15482 RD51 controller 54-16019 54-15688 8087 memory adapter 54-16535 UNIT 2 Same as unit 1 UNIT 3 PC100B motherboard RX50 controller 54-15688 UNIT 4 PC100A motherboard RX50 controller 54-15490 memory expansion, no sockets UNIT 5 and 6 PC100A motherboard RX50 interface Misc- 2 H7842 power supplies PRO items 3 PRO 380 motherboards I hope everything is correct and there are no typo.

9 years, 1 month

1
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Windows 1.0 For DEC Rainbow (mirror of Latrobe ftp anybody ?)

by shadoooo＠gmail.com

Hello, since the messages in May about the MS Windows 1.0 version for DEC Rainbow, I did some research to see if a version is effectively available. It seems that copies of this software are really difficult to find, but a complete copy was available on the latrobe ftp DEC Rainbow archive... which disappeared with all valuable data... Anybody has a copy of the content before the deletion? Anyway, I found a file-by-file copy of it, on this site: https://winworldpc.com/download/62DF4D23-B974-11E4-AC5A-5404A6F17893 For preservation reasons, it would be really better to have an original disk image. Any news about dumping the disks or an ftp archive where they are present? Thanks Andrea

9 years, 1 month

6
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Anyone have a scan of the back cover of "UNIX System V Release 1 User's Manual" (Jan 1983)_Jan83.pdf

by ethan.dicks＠gmail.com

The scan of http://www.mirrorservice.org/sites/www.bitsavers.org/pdf/att/unix/System_V_… has good contents, but the back cover skewed in the scanner. I picked up a copy that is missing the back cover and I want to print a replacement. Anyone have something I can print? Thanks, -ethan

9 years, 1 month

1
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Ohio Scientific Universal RAM Board GW-OSI-RAM1

by systems.glitch＠gmail.com

Finished building a prototype mezzanine board and testing with the IM6100 (PDP-8 on a chip) in the 560Z board today. Full writeup: http://www.glitchwrks.com/2017/05/03/gw-osi-ram1-universal-ram There are a couple of tweaks required, but I should be doing a first production run of boards before long. This board is: * 128 KW, 12-bits * Optional memory management/bank switching * No hard-to-find/expensive ICs (8T26, et c.) * All through hole * Includes lamp register mezzanine header * Largeish prototype area The lamp register is on a mezzanine for a few reasons. First off, octal vs. hex grouping! It really throws me off to try and interpret one on the other. Second, it allows remote mounting on a ribbon cable, i.e. board can be mounted to a front panel. Third, I'll likely design a 7-segment version. Thanks, Jonathan

9 years, 1 month

3
4
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Reviving VT220?

by aaron＠aaronsplace.co.uk

Hi all, A colleague and I are trying to get a VT220 working again as it recently died on us. We are hoping to set up a few items for the mid-80s (including this terminal) to show the graduands what it would have been like if they were doing their CompSci degree 30 years ago. It looks to me like the flyback is dead. There is a lot of soot and there looks like there is some damage to the top of the transformer, better seen in the second image. http://www.cs.nott.ac.uk/~psxasj/sparse/flyback1.jpg http://www.cs.nott.ac.uk/~psxasj/sparse/flyback2.jpg The terminal powers on and does the usual beeping but nothing is displayed on the screen. Does anyone have any advice about what to do here? Are there any sources of compatible flyback transformers? We have a second VT220 which exhibits the same behaviour, hopefully for a different reason so we can try and cobble two into one. Any thoughts / advice would be greatly appreciated. Thanks, Aaron. -- Aaron Jackson PhD Student, Computer Vision Laboratory http://cs.nott.ac.uk/~psxasj

9 years, 1 month

5
20
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VCF SE Photos

by earl＠baugh.org

> Date: Wed, 3 May 2017 08:03:19 -0400 > Subject: VCF SE Photos > > Here are my photos from the VCF South East April 30/May 1. Roswell, GA > hosted by Mims' Computer History Museum of America > > http://vintagecomputer.net/browse_thread.cfm?id=677 > > Just to clarify something here about VCF South East... the Computer Museum of America (that's the official name) provides the venue for the event, but the Atlanta Historical Computing Society (AHCS) actually recruits and covers the expense for having the speakers at the show and also recruits and organizes all the exhibits of the VCF proper (aside >from the two professionally constructed and very informative exhibits that the Computer Museum provides). In the first year the Computer Museum of America did recruit the speakers, but AHCS has done it since. And the AHCS has always recruited and organized the exhibits for the VCF proper. Just want to make both of the partners in this endeavour get proper credit here. Earl

9 years, 1 month

3
4
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IBM 4331 Mainframe

by ggs＠shiresoft.com

Just to let folks know that I finally moved the IBM 4331 Mainframe this past weekend >from where it was currently stored to my shop. Pictures are here: https://www.flickr.com/gp/150223282 at N04/NrX91K <https://www.flickr.com/gp/150223282 at N04/NrX91K> As can be seen in the pictures, it filled a 26? box truck that I had rented for this purpose. Right now I just have it placed somewhat in my shop. Some early tasks will be: * I have to verify that I have everything. Even if I missed some items, they won?t be scrapped. I just need to go over what is currently in my shop and verify that I didn?t leave anything behind. I?m mostly worried about cables at this point. * I have to figure out some way to produce enough ?clean? 3-phase power to run the peripherals (the CPU is 220v single phase) as I only have 220v single phase coming into my shop. Starting to power it up will probably be a while yet. ;-) TTFN - Guy

9 years, 1 month

12
26
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FFS: Elgar IPS1100 UPS

by cclist＠sydex.com

Much of what used to be power-hungry connectivity hardware for me has gone low-power, so I'm scaling back my UPS setup some. I've got an Elgar IPS1100, nominally rated at 1KVA sine-wave continuous (9.2A 60 Hz 120VAC). It's a pretty good-sized UPS, with fan cooling. It takes 48V in SLA cells (has an internal shelf for 8 6V 12AH ones), but I've always run it from 4 garden-tractor batteries. It's pretty good-sized; about 12"x13"x15" and heavy (big transformer). Made in 1990, has 6 AC receptacles on the back along with an RS-232 connector for status notification. Back in the day, this was a pretty high-end unit; manufacture date is 05/90. Yours for shipping; batteries not included. --Chuck

9 years, 1 month

2
1
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VCF SE Photos

by billdegnan＠gmail.com

Here are my photos from the VCF South East April 30/May 1. Roswell, GA hosted by Mims' Computer History Museum of America http://vintagecomputer.net/browse_thread.cfm?id=677

9 years, 1 month

2
1
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Beautifully-posed photos of various kinds of retro kit

by lproven＠gmail.com

>From the Apple ][ up to PowerMac G4s. So, possibly a bit new for many of you folk, but I enjoyed them and thought others might too. http://podstawczynski.com/retro/beauty_shots.html -- Liam Proven ? Profile: https://about.me/liamproven Email: lproven at cix.co.uk ? Google Mail/Talk/Plus: lproven at gmail.com Twitter/Facebook/Flickr: lproven ? Skype/LinkedIn/AIM/Yahoo: liamproven UK: +44 7939-087884 ? ?R/WhatsApp/Telegram/Signal: +420 702 829 053

9 years, 1 month

2
1
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Question about an SGI Fuel issue / fuel sensors ( current - temp )

by mazzinia＠tin.it

Hello, Since there are a lot of experts here ( I guess, at least ), I would like for an opinion / ideas / knowledge. I've been told that the temperature sensors on Fuels are subject to get defective. Is the same valid for current sensors ? The question is due to this... I just got a Fuel donated to me, very kindly, that didn't turn on once I tried to. (the old owner didn't turn it on in a while, I was told) I've connected to the L1 diagnostic serial port on the mb and ... The env system prevents it from turning on for 2 reasons 1) XIO V12 bias with a value of 5.81 , considered too low 2) Odyssey temp fix at 93c at box turned off But I managed to run env while the 30 seconds timer announcing the power down were running and... it shows that 12V and 12V IO are perfect with the psu "running" so... any idea if the xio v12 bias sensor is connected with the odyssey temp sensor and thus could be simply faulty. I could do a test turning off env monitoring, but I would prefer to do it only after hearing opinions . given I don't know what kind of damages could happen if v12 bias is right , instead, and the system is brought up Environmental monitoring is enabled and running. Description State Warning Limits Fault Limits Current -------------- ---------- ----------------- ----------------- ------- 12V Enabled 10% 10.80/ 13.20 20% 9.60/ 14.40 12.12 12V IO Enabled 10% 10.80/ 13.20 20% 9.60/ 14.40 12.19 5V Enabled 10% 4.50/ 5.50 20% 4.00/ 6.00 5.10 3.3V Enabled 10% 2.97/ 3.63 20% 2.64/ 3.96 3.35 2.5V Enabled 10% 2.25/ 2.75 20% 2.00/ 3.00 2.47 1.5V Enabled 10% 1.35/ 1.65 20% 1.20/ 1.80 1.47 5V aux Enabled 10% 4.50/ 5.50 20% 4.00/ 6.00 5.12 3.3V aux Enabled 10% 2.97/ 3.63 20% 2.64/ 3.96 3.29 PIMM0 12V bias Enabled 10% 10.80/ 13.20 20% 9.60/ 14.40 0.00 Asterix SRAM Enabled 10% 2.25/ 2.75 20% 2.00/ 3.00 2.52 Asterix CPU Enabled 10% 1.44/ 1.76 20% 1.28/ 1.92 1.61 PIMM0 1.5V Enabled 10% 1.35/ 1.65 20% 1.20/ 1.80 0.00 PIMM0 3.3V aux Enabled 10% 2.97/ 3.63 20% 2.64/ 3.96 3.30 PIMM0 5V aux Enabled 10% 4.50/ 5.50 20% 4.00/ 6.00 5.15 XIO 12V bias Fault 10% 10.80/ 13.20 20% 9.60/ 14.40 5.81 XIO 5V Enabled 10% 4.50/ 5.50 20% 4.00/ 6.00 2.42 XIO 2.5V Enabled 10% 2.25/ 2.75 20% 2.00/ 3.00 1.21 XIO 3.3V aux Enabled 10% 2.97/ 3.63 20% 2.64/ 3.96 1.60 Description State Warning RPM Current RPM -------------- ---------- ----------- ----------- FAN 0 EXHAUST Enabled 920 1129 FAN 1 HD Enabled 1560 2229 FAN 2 PCI Enabled 1120 1476 FAN 3 XIO 1 Enabled 1600 3869 FAN 4 XIO 2 Enabled 1600 3699 FAN 5 PS Enabled 1600 1980 Advisory Critical Fault Current Description State Temp Temp Temp Temp -------------- ---------- -------- -------- -------- --------- NODE 0 Enabled 60C/140F 65C/149F 70C/158F 20c/ 68F NODE 1 Enabled 60C/140F 65C/149F 70C/158F 21c/ 69F NODE 2 Enabled 60C/140F 65C/149F 70C/158F 20c/ 68F PIMM Enabled 60C/140F 65C/149F 70C/158F 20c/ 68F ODYSSEY Active 60C/140F 65C/149F 70C/158F 93c/199F BEDROCK Enabled 60C/140F 65C/149F 70C/158F 20c/ 68F Alessandro

9 years, 1 month

2
1
0 0

VCF SE Photos

by vintagecomputer＠bettercomputing.net

Thanks for the pics! Curious.. the Mark-8 in the museum.. that's a repro, right? ?I thought they got a few real ones from Bugbook. Brad Sent from my Samsung device -------- Original message -------- From: william degnan via cctalk <cctalk at classiccmp.org> Date: 2017-05-03 5:03 AM (GMT-08:00) To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org> Subject: VCF SE Photos Here are my photos from the VCF South East April 30/May 1.? Roswell, GA hosted by Mims' Computer History Museum of America http://vintagecomputer.net/browse_thread.cfm?id=677

9 years, 1 month

1
0
0 0

AB "Multibus"?

by seefriek＠gmail.com

Are Allen-Bradley Multibus-1 form factor cards actually Multibus compliant or something proprietary? KJ

9 years, 1 month

2
1
0 0

The inventor of the ARM chip donates first computer he ever built (40min video)

by lproven＠gmail.com

https://youtu.be/8_33Yv5LsSs Professor Steve Thurber -- co-inventor of the ARM processor, the BBC Micro and much more -- donates his first ever computer, and arguably the first prototype of the BBC Micro, to The Centre for Computing History in this fascinating (& very cute) video. https://youtu.be/8_33Yv5LsSs Well worth 40min of your time. -- Liam Proven ? Profile: https://about.me/liamproven Email: lproven at cix.co.uk ? Google Mail/Talk/Plus: lproven at gmail.com Twitter/Facebook/Flickr: lproven ? Skype/LinkedIn/AIM/Yahoo: liamproven UK: +44 7939-087884 ? ?R/WhatsApp/Telegram/Signal: +420 702 829 053

9 years, 1 month

1
0
0 0

Looking for TRS-80 Model parts (and/or someone in the Phoenix, AZ area)

by COURYHOUSE＠aol.com

is the 12 the thing that looks like a trs 80 mod 2 in size? if so i have some what is the history behind your unit!?!?!?!?!?!? Yes--- I am in Phx! Ed# In a message dated 4/23/2017 8:14:33 P.M. US Mountain Standard Time, cctalk at classiccmp.org writes: Just picked up a TRS-80 Model 12, and it boot to the "insert disk prompt" ... Yay! But, no card cage, and no KB (and no disks, but those might be easier to find) Found a seller of a model 12 with these items, but local pickup only. I'd like to get this unit up to the Model 16 specs, with Xenix on it. I see the cards are available, but without the cage, no joy. Jim -- Jim Brain brain at jbrain.com www.jbrain.com

9 years, 1 month

10
28
0 0

Vaxstation 3100 of odd sort on epay

by jnc＠mercury.lcs.mit.edu

> From: Jim Stephens > I'm interested in whether this is a wound down or ongoing Dec material > operation, or the operation of an e waste recycler. > Vendor name on ebay is EFI. May have other aliases. Oh, Efi! All hardened DEC collectors know about Efi (well, many of us do :-). They are indeed an ewaste recycler. Good people. The company name is ComUsed and/or TopLine. They used to be in Silver Spring (the place was the personification of 'gomi' from "Neuromancer" :-), but it got too small, so they moved. (Sniff. I miss the old place!) They got started on DEC stuff when they bought some DEC collector's entire collection after that person passed; most of that's long gone (it's been _thoroughly_ picked over :-), but they occasionally get more DEC stuff. Noel

9 years, 1 month

1
0
0 0

IBM 4331 Mainframe

by carlclaunch51＠gmail.com

> The 4361 is the real gem to get in this type of system. There is a > builtin storage director as well as the 4 port comm controller. The 4331 had an option for an integrated storage director, as well as a feature that converted between CKD and FBA for use with 3340 drives. The system Guy owns only needs the 3340 A2 and B2 drives cabled together and to the integrated director. Carl

9 years, 1 month

1
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os8diskserver help?

by tomjmoss＠googlemail.com

Hi All, I'm in the process of building and restoring a PDP-8/e, and now I've got a second serial card I'd like to give OS/8 a try. I'm pretty sure I've got the boot loader entered properly, and the address + baud rates set correctly on the PDP and PC. When I start os8diskserver with "./os8disk -1 ../disks/diagpack2.rk05", it gives the welcome message. When I start the 8/e, It says: Booting... Done sending block 0 ^ and appears to freeze there. (the 8/e doesn't halt) I've got a RS-232 tester (blinky light box) hooked up to the port, which seems to indicate that nothing is being sent after Block 0 has been sent. Does anyone know what's going on, or what I'm doing wrong? Regards, -Tom

9 years, 1 month

2
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Something for the P3 you have in your back yard

by aek＠bitsavers.org

http://www.ebay.com/itm/Vintage-Military-IBM-Computer-/201911842662 https://fas.org/man/dod-101/sys/ship/weaps/an-uys-1.htm

9 years, 1 month

2
1
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Bulk tape eraser

by mloewen＠cpumagic.scol.pa.us

Looking for recommendations for a bulk tape eraser for SDLT and DLT IV tapes. Mike Loewen mloewen at cpumagic.scol.pa.us Old Technology http://q7.neurotica.com/Oldtech/

9 years, 1 month

7
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Oscilloscope Recommendation

by shadoooo＠gmail.com

Hello, all fine with Rigol or similar oscilloscopes, but there's a very important technical specification that often is not considered, which really DOES the difference between a cheap oscilloscope and a powerful one: waveforms per second. Suppose you are searching for a rare glitch, or that you are trying to trace an edge of a signal with infinite persistence. If the scope is a DSO, it just takes a sampling window, the memory is full and requires data processing and display, in the meantime the signal is not analyzed, and you can lose important events. A DPO can capture the signal continuously, or at least with very short death time, and the display is updated using a large number of triggered sampling windows. Of course this kind requires a far powerful acquisition circuit. I really like DPO scopes in place of DSO, for example used Tek TDS540C or D, they are quite cheap, no electrolytic caps, and can be optionally expended to increase acquisition memory depth. Display is small and grey, but you can use a VGA monitor. My two cents. Andrea

9 years, 1 month

2
1
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mx-80 for free

by db＠db.net

I found an Epson MX-80 in my pile of junque. I'd rather not ship but Ottawa, Montreal or Toronto are all possible. Otherwise, out to recycle. -- - db at FreeBSD.org db at db.net http://www.db.net/~db

9 years, 1 month

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Oscilloscope Recommendation

by michael.99.thompson＠gmail.com

The RICM just received $1,000 to buy a new oscilloscope. I would like a four channel. and color would also be nice. The bandwidth doesn't need to be high because we usually work on ancient equipment. What would you suggest? -- Michael Thompson

9 years, 1 month

10
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Reviving VT220?

by w9gb＠icloud.com

The High Voltage capacitors 600 to 2,000 VDC have a finite life. Unless you checked for leakage or ESR .... be suspect of values in range. Since you are in the UK, Farnell/element14 may be the best parts distributor. ASC Metalized Polyester Film, 6 kVolts http://www.justradios.com/ASCcapacitors.html Metalized Polypropylene Film, 1600 volts http://www.justradios.com/MPMcapacitors.html ==== DEC VT-220 : AMP/Tyco Mate-N-Lok http://avitech.com.au/?p=252 greg Sent from iPad Air Sent from iPad Air

9 years, 1 month

1
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HP 1331A X-Y display blanking

by jules.richardson99＠gmail.com

Has anyone got a manual for an HP 1331A X-Y display? It's a storage-tube device, and I'm curious to know if there's a way of triggering the erase function remotely rather than having to physically prod the erase button on the front. The rear just has X-Y-Z inputs, and I *think* that X-Y are supposed to be in the order of +/- 1V, while Z is the intensity with 0V being full and around 1V being off. Maybe throwing a negative voltage at Z erases, or something, though. cheers Jules

9 years, 1 month

2
2
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Tandon TM-100-1 electronics repair

by ethan.dicks＠gmail.com

Hi, All, I'm cleaning/refurbing a TRS-80 Model 4 I picked up at VCFe that was in dirty-but-mostly-working shape. I've completely dismantled, cleaned and reassembled the keyboard, I fixed the bad cable to the floppy controller, I cleaned and lubed the TM-100-1 floppy drive, and had it all nice and working, then I bumped the power strip it was plugged into and the momentary surge took out the electronics on the floppy drive. I swapped it out with another TM-100-1 unit (borrowed >from a Model 1) and it's booting again, but when using this toasted drive as :1, I get either an ERROR 3 or ERROR 4 from TRSDOS 1.3 (my primary testing disk for the moment). The drive still seeks and spins but it won't read disks that it used to read before the power hit. I also have an original NEWDOS/80 disk and a copied MULTIDOS disk. I have not yet fixed up a PC with a 40-track 5.25" drive for making fresh disks, but it's on the list of solution paths. I have the TM-100 service manual PDF (which includes schematics), so it shouldn't be difficult to work through the functional subsystems of the drive electronics. My question is are there any specific issues with the parts on the TM-100 PCB to look for? There are a handful of reasonably common ICs, and dozens of discrete components. Of course I can trace through each section looking for where the results are unexpected, but for such a common thing as a TM-100, perhaps there are known pain points and perhaps someone here has repaired a few and could highlight what parts might be "fragile". Additionally, for a testing framework to poke signals through the drive for debugging during the repair, what's a good platform? A PC running MS-DOS? The TRS-80 Model 4 itself? Besides doing directories, are there any good bits of software anyone can recommend for exercising floppy drives on a sub-system-by-subsystem basis? (move the heads, do a read, do a write...) I expect like the last repair (shorted tantalum filter cap), this repair is going to be a small number of components. Parts of the drive are known to work - the motor turns on and off when it should, and it does seek back to track zero when manually moved off of track zero prior to doing a DIR :1 or when booting it as :0. At first glance, something appears to be toasted in the read electronics. It's not impossible to find another TM-100-1 or replace it with a TM-100-2 (more common, owing to its appearance in the IBM 5150 PC), but I'd like to just repair this one and get back to TRS-80 hacking. Thanks for any tips or pointers. -ethan

9 years, 1 month

6
11
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Reviving VT220?

by w9gb＠icloud.com

For your education, Google search "Flyback transformer" There are a number of rebuilders, replacements, and substations. B&H Electronics https://www.bhelectronics.com/products/dc-dc-power-products/isolated-flybac… Pactran http://pactran.com/why-pacific-transformer/?gclid=CNWWzLzVx9MCFQkaaQodop0BTQ greg Chicago Sent from iPhone 6s

9 years, 1 month

2
1
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Diablo 3x pictures

by aek＠bitsavers.org

Was working on some Drives this week, and took some pictures of it disassembled. http://bitsavers.trailing-edge.com/pdf/diablo/photos/Diablo_33F/ The prefilter was orange crumblefoam. I took a look at my NOS ones and they have a greenish prefilter that still appears to be OK. The gasket going up to the plastic basket that holds the pack is crublefoam as well. I'm going to try some 3/8" x 1/2" Norprene foam strip as a replacement, with polyurethane glue over the seam. The door latch and load lamp is driving me nuts. Dug out my extender card this morning to try and figure out why the driver transistors aren't turning on. Tranistors, diodes are fine, and the J9 board that drives it works in another drive.

9 years, 1 month

4
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Anyone driving from the Midwest to VCF_SE this weekend?

by brain＠jbrain.com

I am flying in and wondering if someone had any extra room coming home (for parts, not me). Jim -- Jim Brain brain at jbrain.com www.jbrain.com

9 years, 1 month

1
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RA82 HDA

by shadoooo＠gmail.com

Hello, where are you located? If you are in EU, I'm interested. Thanks Andrea

9 years, 1 month

3
3
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test, please ignore

by barythrin＠gmail.com

(Waits for Jay's next email "This has been a test of the new auto banning system. Thank you.") -------- Original message --------From: Alexandre Souza via cctalk <cctalk at classiccmp.org> Date: 4/27/17 1:58 PM (GMT-06:00) To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org>, Jay West <jwest at classiccmp.org> Subject: Re: test, please ignore This is a test, designed to provoke an emotional response Enviado do meu Tele-Movel On Apr 26, 2017 9:39 PM, "Jay West via cctalk" <cctalk at classiccmp.org> wrote: > Don't need a response, please ignore. > > > > J > >

9 years, 1 month

1
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Air Force Issues Challenge to “Hack the Air Force” 04/26/2017 04:10 PM CDT --

by COURYHOUSE＠aol.com

____________________________________ IMMEDIATE RELEASE No. NR-145-17 April 26, 2017 ____________________________________ Air Force Issues Challenge to ?Hack the Air Force? The Air Force is inviting vetted computer security specialists from across the U.S. and select partner nations to do their best to hack some of its key public websites. The initiative is part of the Cyber Secure campaign sponsored by the Air Force?s Chief Information Office as a measure to further operationalize the domain and leverage talent from both within and outside the Department of Defense. The event expands on the DoD ?Hack the Pentagon? bug bounty program by broadening the participation pool from U.S. citizens to include ?white hat? hackers from the United Kingdom, Canada, Australia and New Zealand. ?This outside approach--drawing on the talent and expertise of our citizens and partner-nation citizens--in identifying our security vulnerabilities will help bolster our cybersecurity. We already aggressively conduct exercises and 'red team' our public facing and critical websites. But this next step throws open the doors and brings additional talent onto our cyber team,? said Air Force Chief of Staff Gen. David Goldfein. White hat hacking and crowdsourced security concepts are industry standards that are used by small businesses and large corporations alike to better secure their networks against malicious attacks. Bug bounty programs offer paid bounties for all legitimate vulnerabilities reported. ?This is the first time the AF has opened up our networks to such a broad scrutiny,? said Air Force Chief Information Security Officer Peter Kim. ? We have malicious hackers trying to get into our systems every day. It will be nice to have friendly hackers taking a shot and, most importantly, showing us how to improve our cybersecurity and defense posture. The additional participation from our partner nations greatly widens the variety of experience available to find additional unique vulnerabilities.? Kim made the announcement at a kick-off event held at the headquarters of HackerOne, the contracted security consulting firm running the contest. "The whole idea of 'security through obscurity' is completely backwards. We need to understand where our weaknesses are in order to fix them, and there is no better way than to open it up to the global hacker community," said Chris Lynch of the Defense Digital Service (DDS), an organization comprised of industry experts incorporating critical private sector experience across numerous digital challenges. The competition for technical talent in both the public and private sectors is fiercer than it has ever been according to Kim. The Air Force must compete with companies like Facebook and Google for the best and brightest, particularly in the science, technology, engineering, and math fields. Keen to leverage private sector talent, the Air Force partnered with DDS to launch the Air Force Digital Service team in January 2017, affording a creative solution that turns that competition for talent into a partnership. In fact, Acting Secretary of the Air Force Lisa S. Disbrow and Gen. Goldfein visited the Defense Digital Service and Air Force Digital Service in early April to discuss a variety of initiatives the Air Force can benefit from. ?We're mobilizing the best talent from across the nation and among partner nations to help strengthen the Air Force's cyber defenses. It's an exciting venture, one that will make us better, and one that focuses an incredible pool of capabilities toward keeping our Air Force sites secure," said Acting Secretary Disbrow. The DoD?s ?Hack the Pentagon? initiative was launched by the Defense Digital Service in April 2016 as the first bug bounty program employed by the federal government. More than 1,400 hackers registered to participate in the program. Nearly 200 reports were received within the first six hours of the program?s launch, and $75,000 in total bounties was paid out to participating hackers. Registration for the ?Hack the Air Force? event opens on May 15th on the _HackerOne_ (http://links.govdelivery.com/track?type=click&enid =ZWFzPTEmbWFpbGluZ2lkPTIwMTcwNDI3LjcyNzk2MTYxJm1lc3NhZ2VpZD1NREItUFJELUJVTC0yMDE3MDQyNy43M jc5NjE2MSZkYXRhYmFzZWlkPTEwMDEmc2VyaWFsPTE3NDEwNDE5JmVtYWlsaWQ9Y291cnlob3VzZ UBhb2wuY29tJnVzZXJpZD1jb3VyeWhvdXNlQGFvbC5jb20mZmw9JmV4dHJhPU11bHRpdmFyaWF0Z UlkPSYmJg==&&&101&&&https://www.hackerone.com/?source=GovDelivery) website. The contest opens on May 30th and ends on June 23rd. Military members and government civilians are not eligible for compensation, but can participate on-duty with supervisor approval. Updates from the U.S. Department of Defense

9 years, 1 month

1
0
0 0

test, please ignore

by jwest＠classiccmp.org

Don't need a response, please ignore. J

9 years, 1 month

5
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