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

Looking for an Apple Profile hard drive - dead or alive

by ian_primus＠yahoo.com

Does anyone have an Apple Profile drive they aren't using? I have need for one. Does not need to work. Thanks! -Ian

15 years, 5 months

1
0
0 0

VCF East flier is available

by evan＠snarc.net

Here's the link: http://www.snarc.net/vcfe7flier.pdf .... please share widely! - Evan

15 years, 5 months

1
0
0 0

Pacific Educational Systems VPU-1 External Voice Synth

by mbbrutman-cctalk＠brutman.com

This is an external voice synthesis box based on an Intel 8031 micro-controller and a TSP5220CNL synthesis chip. It has an RS232 interface, volume and tone knobs, a headphone jack and an RCA jack for external audio. Does anybody remember these things and how to talk to them? I've tried all of the various bps rate and parity combinations from 300 to 19200 and I can't get anything response (data or sound). Thanks, Mike

15 years, 5 months

2
2
0 0

Free: Stack of Victor or Sirius floppy disks

by les＠frii.com

The Victor 9000 had a variable spindle speed, I cant remember if the drive spun faster on the inside or outside tracks. Also, the index hole detector was not used. Many of the drives did not have a index detector, on the drives that did have an index hole sensor, it worked just as well without it plugged in. I got in a argument about the ability to use hard sectored floppies in the Victor 9000 with a Victor sales rep once. Even after I showed him that the index detector was not connected, he still didn't believe me. Les

15 years, 5 months

5
8
0 0

Reordering S-100 PCBs

by lynchaj＠yahoo.com

Hi! I am putting together the next set of S-100 PCB reorders for the S-100 hobbyist group. The two boards I would like to order next are the S-100 EPROM and S-100 IO boards. So far, I have eight builders on the waiting list for the S-100 Flash/EEPROM/EPROM/SRAM board http://s100computers.com/My%20System%20Pages/PROM%20Board/PROM%20Board.htm I have eleven builders on the waiting list for the S-100 Serial IO (with USB and Speech Synthesis) http://s100computers.com/My%20System%20Pages/Serial%20IO%20Board/Serial%20IO %20Board.htm I need about reasonably firm 20 builders on the waiting list to warrant a PCB reorder. Both of these boards are going to be respins to correct any issues from the original boards. They are useful in any S-100 system and offer full IEEE-696 compatibility. Please contact me by email LYNCHAJ at YAHOO.COM if interested in either or both boards. They will be $20 each plus $3 shipping in the US and $6 elsewhere as per usual arrangement. I will combine shipping on multiple boards to reduce shipping depending on weight. Thanks and have a nice day! Andrew Lynch

15 years, 5 months

1
0
0 0

TG43 signal and 8" drives on commodity hardware (was Re: WTD: 8-inch floppy drive)

by ethan.dicks＠gmail.com

On Wed, Mar 2, 2011 at 1:52 PM, Tony Duell <ard at p850ug1.demon.co.uk> wrote: > One other nice featuroe of these drives is a slotted optoswtich near the > head carrarriage that changes state at cylinder 43. This is used (I think > it's a jumper-selected option) to reduce the write current, so you don't > need to provide the TG43 signal from the controller. Very handy if you're > using them with a PC/AT controller ;-) I know it's easy to generate this signal with an inexpensive microcontroller, but I'm curious what drives have this feature. I have a TM848 (can't remember if it's -1 or -2 - I'd probably have to pull it from the Dataram Qbus chassis it's in to check, but since it's meant to emulate an RX02, it's *probably* a TM848-1) that I was planning on rigging to a PC-class machine at some point to image my pile of RX01 and box of CP/M 8" floppies. Of course with all the DEC gear I have, I might as well look into using vtserver to pull down RX01 _and_ RX02 images from a real RX02 drive, but I still have plans to build a PC-based multi-media floppy imaging box, so I'm keeping my eye out for a preferred model of 8" drive for that purpose. So far, I really only know a little bit about the SA800s and the TM848s (and the Calcomps used in RX01s and RX02s, but I'm not likely to hang one of those off of a PC). Anyone have any recommendations for good drives to use with PCs? -ethan

15 years, 5 months

16
25
0 0

6805 equipment pulls

by legalize＠xmission.com

Hi, A neighbouring hacker space has access to some Motorola 6805 equipment pulls. These are 6800s with some amount of on-chip RAM, ROM and IO. I have no idea what the ROM might contain or if you can circumvent the ROM with your own code in off-chip RAM. They don't have any plans for these chips. If you are familiar with them, we'd like to learn more about them. If you need some for your project, just let me know. -- "The Direct3D Graphics Pipeline" -- DirectX 9 draft available for download <http://legalizeadulthood.wordpress.com/the-direct3d-graphics-pipeline/> Legalize Adulthood! <http://legalizeadulthood.wordpress.com>

15 years, 5 months

5
14
0 0

WTD: 8-inch floppy drive

by nico＠Farumdata.dk

---------- Original Message ---------------------------------- From: "MikeS" <dm561 at torfree.net> Reply-To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org> Date: Wed, 2 Mar 2011 12:32:05 -0500 >> Date: Tue, 01 Mar 2011 14:50:19 -0800 >> From: Geoffrey Reed <geoffr at zipcon.net> >> Subject: Re: WTD: 8-inch floppy drive >> >> IIRC the tandon TM-848-2 drives use 24VDC motors... I always liked them >> better than the shugart drives. >> > >Me too! > >Note that the earlier TM-848s used a belt drive, whereas the 848-2 is direct >drive (all 24VDC of course). > >m > What is a typical sales price for a functioning 8" drive? I have some YE data YD180 "surplus to requirements". They run on +5 and +24 VDC. The power connect looks like the connects on 3.5" floppies, about double width. All drives are DSDD

15 years, 5 months

4
3
0 0

Historical Mainframe Security Docs Available

by lee_courtney＠acm.org

Hi all, I'm cleaning out my library and have the following set of IBM mainframe security documentation free for 20lbs shipping from 94025. Sorry, all or nothing - I only want to make one trip to ship these. These manuals cover the period from early to late-1980s. They go to the first person to accept the lot. Will get recycled if not claimed by 2/2. Have already offered to Bitsavers, and have scanned in case Al wants later. Lee Courtney lee_courtney at acm.org Auditing Top Secret Overview MVS Secured using CA-ACF2 RACF Overview MAJOR COMPONENTS OF AN ACF2-PROTECTED SYSTEM ACF2 Training Class Access Control Facility Auditor's Guide Access Control Facility IMPLEMENTATION PLANNING GUIDE The Access Control Facility General Information Manual The Access Control Facility Overview Access Control Facility UTILITIES MANUAL ACF2 Composite Index ACF2 Release 4 Enhancement Summary The Access Control Facility Administrators Guide VM Secure Users Guide VM CMS User Guide and Reference Manual VMSECURE Quick Reference ACF2 Reporting System Reference Card CA-ACF2 Audit Overview What About VM Security VM Software Fee Schedule VM Software Newsletter AUTOMATING THE AUDIT OF RACF PROFILES CONSUL Mainframe Security Overview CONSUL RACF Sample Output CONSUL RACF User Reference Manual BoKS Administration BoKs Release Notes and Getting Started Guide

15 years, 5 months

4
3
0 0

cctech Digest, Vol 91, Issue 3

by bdamer＠digitalspace.com

Re: Giant Mac collection available... Good idea Evan, thanks! b

15 years, 5 months

1
0
0 0

PDP-11 on FGPA (was Re: MFM to IDE was RE SCSI -1 to IDE and SD project)

by ethan.dicks＠gmail.com

On Wed, Mar 2, 2011 at 3:10 AM, Rod Smallwood <rodsmallwood at btconnect.com> wrote: > How about a whole PDP11 including the IDE interface? Sounds fun to me. > http://www.heeltoe.com/download/pdp11/README.html That's a fun little project. Looking at the size of it, a little 2.5" IDE drive (or CF) would go well with it - small enough to make a native 16-bit portable (one of my long-term frivolous projects is marrying a wee dumb terminal to a wee PDP-8 or PDP-11 for a laptop-sized environment - easier to load into the car than the real thing. The SBC6120+IOB6120 is a good core for one version of that, this could be another, using a Spare Time Gizmos VT-4 or similar). -ethan

15 years, 5 months

1
0
0 0

My posts

by a50mhzham＠gmail.com

I believe I've sent two posts to the list this week. I haven't seen them, nor has anyone replied or cited them. (Blows across microphone) Is this thing on? 29 . [Philosphy] "For every complex question, there is a simple answer--and it's wrong." --H.L. Mencken NEW: a50mhzham at gmail.com ? N9QQB (amateur radio) "HEY YOU" (loud shouting) ? Second Tops (Set Dancing) ? FIND ME ON FACEBOOK 43? 7' 17.2" N by 88? 6' 28.9" W ? Elevation 815' ? Grid Square EN53wc LAN/Telecom Analyst ? Open-source Dude ? Musician ? Registered Linux User 385531

15 years, 5 months

1
0
0 0

WTD: 8-inch floppy drive

by nico＠Farumdata.dk

---------- Original Message ---------------------------------- From: Al Kossow <aek at bitsavers.org> Reply-To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org> Date: Wed, 02 Mar 2011 10:56:28 -0800 >On 3/2/11 10:10 AM, nico wrote: > >> What is a typical sales price for a functioning 8" drive? > >How much would it cost to get one to Philip from where you are? > >I'll cover the cost up to $100 total. > Just checked the going mail rates. If the weight is up to 5 kilo, a package will cost $ 55. They take $ 5 for an extra kilo. For an extra 18$, I can send 10 kilo. The heavier, the "cheaper" Would it be an idea with 2 drives, as the second would be almost for free, postage wise. If I send only 1 drive, I will in effect sell it for 45$, which is a but cheap BTW, I still have the diagrams for the Qualstar 3412S you asked about years ago. Still interested? Nico

15 years, 5 months

1
0
0 0

WTD: 8-inch floppy drive

by classiccmp＠philpem.me.uk

Hi guys, I'm trying to track down an 8-inch floppy drive to read an Intel MDS M2FM disc I've been sent for adding to the DiscFerret decoder engine. Specifically: it's an ISIS boot floppy, in SS/DD format. Does anyone have a spare 8in drive gathering dust in a corner somewhere? Based on the prices on Greed-Bay, I get the impression most of the sellers have been engaging in some form of abuse of illicit substances.... I mean, seriously, $700 for a Shugart 801, "untested" (which would seem to be a synonym for "I know it's broken but I sure as hell won't admit it!") and missing the head-amp / motor control PCB? Thanks, -- Phil. classiccmp at philpem.me.uk http://www.philpem.me.uk/

15 years, 5 months

8
13
0 0

WTD: MCM6206 RAMs

by classiccmp＠philpem.me.uk

This just keeps getting better. It seems the failed EEPROM chip in my logic analyser left a parting gift: it spiked the D4 and A9 lines on its way out. In other words, it's killed half a dozen bus transceivers (74F244 and 74F245), and probably the two MCM6206 high-speed RAMs as well... Does anyone have any Motorola MCM6206 series parts to hand, preferably in the J-lead surface-mount package? The parts installed now are MCM6206DJ35, but other (faster) speed grades should be fine too. I need at least two of these, but preferably four or five so I've got spares for future use... Thanks, -- Phil. classiccmp at philpem.me.uk http://www.philpem.me.uk/

15 years, 5 months

1
0
0 0

WTD: 8-inch floppy drive

by dm561＠torfree.net

> Date: Tue, 01 Mar 2011 14:50:19 -0800 > From: Geoffrey Reed <geoffr at zipcon.net> > Subject: Re: WTD: 8-inch floppy drive > > IIRC the tandon TM-848-2 drives use 24VDC motors... I always liked them > better than the shugart drives. > Me too! Note that the earlier TM-848s used a belt drive, whereas the 848-2 is direct drive (all 24VDC of course). m

15 years, 5 months

1
0
0 0

HP 9000 series 200 emulator

by Wayne.Smith＠warnerbros.com

Truly astounding work - thanks for doing this and for sharing it. Wayne Date: Wed, 2 Mar 2011 13:17:19 +0100 From: Olivier De Smet <olivier.2.smet at gmail.com> Subject: HP 9000 series 200 emulator To: cctalk at classiccmp.org Message-ID: <AANLkTikqDgzuhHVPdk6HZWRczuHt28_QJzPjNu1U7+qH at mail.gmail.com> Content-Type: text/plain; charset=ISO-8859-1 Hi, I have seen recently some 'request' for an hp 9000 serie 200 emulator .... here it is : http://sites.google.com/site/olivier2smet2/hp_projects/hp98x6 Olivier

15 years, 5 months

1
0
0 0

MFM to IDE was RE SCSI -1 to IDE and SD project

by lynchaj＠yahoo.com

Hi Ian, please note I said 'feasible'. Given enough effort and money I am confident that it is possible to build an MFM to IDE adapter. However, I do not think it is feasible as a hobbyist project. I may be wrong and maybe someone will produce such a device. I look forward to seeing it if and when it happens. Thanks and have a nice day! Andrew Lynch MFM to IDE was: RE: SCSI -1 to IDE and SD project Mr Ian Primus ian_primus <mailto:cctalk%40classiccmp.org?Subject=Re%3A%20MFM%20to%20IDE%20was%3A%20RE %3A%20SCSI%20-1%20to%20IDE%20and%20SD%20project&In-Reply-To=%3C511826.97503. qm%40web121606.mail.ne1.yahoo.com%3E> at yahoo.com Mon Feb 28 15:05:22 CST 2011 * Previous message: SCSI -1 to IDE and SD project <http://classiccmp.org/pipermail/cctalk/2011-February/297444.html> * Next message: MFM to IDE was: RE: SCSI -1 to IDE and <http://classiccmp.org/pipermail/cctalk/2011-February/297447.html> SD project * Messages sorted by: [ date ] <http://classiccmp.org/pipermail/cctalk/2011-February/date.html#297445> [ thread ] <http://classiccmp.org/pipermail/cctalk/2011-February/thread.html#297445> [ <http://classiccmp.org/pipermail/cctalk/2011-February/subject.html#297445> subject ] [ author ] <http://classiccmp.org/pipermail/cctalk/2011-February/author.html#297445> _____ On the subject of disk interface converters, I do believe an MFM to IDE bridge to be possible. Philip Pemberton has already proven it's possible to interface an MFM type device to a modern microcontroller - albiet the other way around, with his DiskFerret project. The MFM interface is very different >from SCSI and IDE, true, but with modern microcontrollers, the data rate should be achievable. Sure, the MFM interface is primitive. You've got the analog-ish data stream >from the disk and some stepper motor drive signals, but you can translate those with a microcontroller, have it request the block from the IDE device, buffer it, and stream it out to the host. I think it's doable. Just, more complicated than, say, SCSI to IDE. SCSI to IDE is a great project, but at least, for me, I've got plenty of SCSI drives. In fact, I probably have more SCSI disks than IDE. MFM, not so much. -Ian _____ * Previous message: SCSI -1 to IDE and SD project <http://classiccmp.org/pipermail/cctalk/2011-February/297444.html> * Next message: MFM to IDE was: RE: SCSI -1 to IDE and <http://classiccmp.org/pipermail/cctalk/2011-February/297447.html> SD project * Messages sorted by: [ date ] <http://classiccmp.org/pipermail/cctalk/2011-February/date.html#297445> [ thread ] <http://classiccmp.org/pipermail/cctalk/2011-February/thread.html#297445> [ <http://classiccmp.org/pipermail/cctalk/2011-February/subject.html#297445> subject ] [ author ] <http://classiccmp.org/pipermail/cctalk/2011-February/author.html#297445> _____ More information <http://www.classiccmp.org/mailman/listinfo/cctalk> about the cctalk mailing list _____

15 years, 5 months

2
1
0 0

SCSI -1 to IDE and SD project

by lynchaj＠yahoo.com

Hi Rod, I do not think an MFM/RLL (ST506/ST412) to IDE bridge board is feasible. The SCSI-1 and IDE interfaces are purely digital and the drives are intelligent enough to abstract much of the realtime complexities of communicating with the hard drive itself. As a result the bridge board between the SCSI-1 and IDE is relatively simple and a basic Z80 embedded controller is able to accomplish the data transfer relatively easily. It is well suited for a community hobbyist project like the SCSI to IDE/SD bridge board we are working on at Vintage-Computer.com forums. MFM/RLL (ST506/ST412) interfaces are a high speed extension of the Shugart floppy drive interface with some additional signals. It is a hard realtime interface and low level way to communicate with the hard drive. As a result it would require an extremely sophisticated high speed controller to interpret the signals to and from the MFM/RLL (ST506/ST412). A simple Z80 or microcontroller based controller would not be able to accomplish the task in my opinion. It may be possible but I believe it would be an expensive commercial device and probably quite rare. The SCSI-1 to/from IDE/SD project is a hobbyist community project and I think would be quite helpful to the wide array of legacy/vintage/classic devices which use SCSI-1 drives. So far, I have heard from owners of the obvious microcomputers like Atari, Amiga, Apple Mac, Sun workstations, DEC, etc. However many other devices used SCSI-1 devices such as synthesizers, a variety of test and lab equipment (?), sewing machines (?), photocopiers (?), and other devices I would have never suspected used SCSI-1 drives. At the moment, there are 6 builders with the prototype PCBs but none have reported a working build yet. The parts are very common and the design uses only "hobbyist friendly" construction for easy assembly. However, the software still needs to be written which should be largely reuse of existing Z80 code from existing N8VEM projects. If you or anyone else is interested in working on the project please contact me. I still have 4 remaining prototype PCBs. My goal is to get this project up and running before the SCSI-1 drives become difficult to obtain such as 100 TPI floppy drives, MFM/RLL (ST506/ST412) hard drives, and other uncommon storage medias. All of the technical information on the project is available at the N8VEM wiki. It will be free/open and publicly posted for community benefit like the rest of the N8VEM boards. Please read the existing technical documentation before critiquing the design. http://n8vem-sbc.pbworks.com/w/browse/#view=ViewFolder <http://n8vem-sbc.pbworks.com/w/browse/#view=ViewFolder&param=MINI%20SCSI%20 to%20IDE%20prototypes> &param=MINI%20SCSI%20to%20IDE%20prototypes Thanks and have a nice day! Andrew Lynch SCSI -1 to IDE and SD project Rod Smallwood rodsmallwood at btconnect.com <mailto:cctalk%40classiccmp.org?Subject=Re%3A%20SCSI%20-1%20to%20IDE%20and%2 0SD%20project&In-Reply-To=%3C5177DAA49B624EFD819C07F9E41EFFA8%40RODSDEVSYSTE M%3E> Tue Feb 22 02:36:34 CST 2011 * Previous message: GSX <http://classiccmp.org/pipermail/cctalk/2011-February/297266.html> porting project * Next message: SCSI -1 to <http://classiccmp.org/pipermail/cctalk/2011-February/297278.html> IDE and SD project * Messages sorted by: [ date ] <http://classiccmp.org/pipermail/cctalk/2011-February/date.html#297263> [ <http://classiccmp.org/pipermail/cctalk/2011-February/thread.html#297263> thread ] [ subject ] <http://classiccmp.org/pipermail/cctalk/2011-February/subject.html#297263> [ author ] <http://classiccmp.org/pipermail/cctalk/2011-February/author.html#297263> _____ Hi This looks interesting. As collector of DEC systems my need is slightly different insofar as due to the rapid disappearance of ST506 (MFM) drives I need to make say an IDE drive look like a an ST506 drive to a DEC MFM controller. Whilst your SCSI to IDE is nice I'm not short of SCSI drives. However with your experience you might like to comment on if you think a DEC MFM controller to IDE drive converter box is feasible. Regards Rod Smallwood -----Original Message----- From: cctech-bounces at classiccmp.org <http://www.classiccmp.org/mailman/listinfo/cctalk> [mailto:cctech-bounces at classiccmp.org <http://www.classiccmp.org/mailman/listinfo/cctalk> ] On Behalf Of Andrew Lynch Sent: 21 February 2011 14:39 To: cctalk at classiccmp.org <http://www.classiccmp.org/mailman/listinfo/cctalk> Subject: SCSI -1 to IDE and SD project Hi! Several weeks ago there was a discussion on CCTALK about a free/open SCSI to IDE and SD project. I designed a PCB using the Z53C80 and a Z80 with RAM/ROM/UART/IDE and SD. There is a prototype available waiting for some interested builders to take on the project. As far as I know none of the builders have a completed unit although I think if we had at least one working unit the project would make some real progress. I have four remaining SCSI to IDE/SD prototype boards so if anyone would like to join the project as a software developer please let me know. I believe much of the software can be reused from previous N8VEM and/or other free/open software projects. http://n8vem-sbc.pbworks.com/w/page/35044530/PCB-Inventory Thanks and have a nice day! Andrew Lynch _____ size=2 width="100%" align=center> * Previous message: GSX <http://classiccmp.org/pipermail/cctalk/2011-February/297266.html> porting project * Next message: SCSI -1 to <http://classiccmp.org/pipermail/cctalk/2011-February/297278.html> IDE and SD project * Messages sorted by: [ date ] <http://classiccmp.org/pipermail/cctalk/2011-February/date.html#297263> [ thread ] <http://classiccmp.org/pipermail/cctalk/2011-February/thread.html#297263> [ <http://classiccmp.org/pipermail/cctalk/2011-February/subject.html#297263> subject ] [ author ] <http://classiccmp.org/pipermail/cctalk/2011-February/author.html#297263> _____ More <http://www.classiccmp.org/mailman/listinfo/cctalk> information about the cctalk mailing list _____

15 years, 5 months

5
5
0 0

Ted Nelson interview

by david＠classiccomputing.com

> Message: 1 > Date: Sun, 27 Feb 2011 17:34:59 +0000 (GMT) > From: ard at p850ug1.demon.co.uk (Tony Duell) > Subject: Re: Ted Nelson interview > To: cctalk at classiccmp.org > Message-ID: <m1PtkWP-000J48C at p850ug1> > Content-Type: text/plain > >> I don't understand, Tony. I mean, you spent the past several years >> trying to convince us all that you * everything *. :) > > I beg your pardon... > > I have repeatedly said that I am not an expert on _anything_. And that > there are many, many, things that I do not know, and cannot do. And I > sill stick to that > > BTW, thanks to everyone who enlightened me as to what Ted Nelson did. Tony and everyone, You can also see Ted Nelson here - http://www.viddler.com/explore/waxpancake/videos/6/1.964/ Starting at 6:17. If anyone has never watched this documentary before, I highly recommend it! It's my favorite. Best, David Greelish, Computer Historian Classic Computing The Home of Computer History Nostalgia http://www.classiccomputing.com Classic Computing Blog Classic Computing Show video podcast "Stan Veit's History of the Personal Computer" audiobook podcast Retro Computing Roundtable podcast Historical Computer Society Classic Computing Expo 1.0 - planning for sometime late 2011!

15 years, 5 months

2
1
0 0

Using tu58em to boot standalone backup on 11/750 ?

by david_comley＠yahoo.com

Has anyone ever tried using the tu58em program to boot a VMS 5.2 install standalone backup on an 11/750 ? I ask because I am attempting to do so, and I keep encountering mount verify errors when I get to the fourth tape in the set. I see a lot of web references to using tu58em in the PDP-11 world, but not so much on the VAX. I suspect some sort of protocol error caused by an invalid response from the emulator. Same problem with the VMS 5.3 install, by the way. Before I pursue this approach to installing the OS any further I thought I'd see whether there's a known issue trying to do this. -Dave

15 years, 5 months

2
1
0 0

Giant Mac collection available...

by bdamer＠digitalspace.com

Folks there is a fellow offering a giant Mac collection which he hopes to find a buyer for: http://web.me.com/macabbott/macabb.com/Mac_Museum_Photos.html anyone have any recommendations here? Bruce

15 years, 5 months

2
1
0 0

FPGA PDP-1 implementation over at Opencores...

by cclist＠sydex.com

http://opencores.org/project,pdp1,Overview (I think you need to join Opencores to actually download anything) FWIW, Chuck

15 years, 5 months

1
0
0 0

Altos terminal on ebay and an odd japanese computer

by innfoclassics＠gmail.com

Looked at the Microsoft package mentioned and then looked at the rest of their items for sale. Noticed a couple of interesting pieces. 140486117150 Vintage Oasys 30 AFII Japanese luggable computer Cheap Altos V terminal if you can pick it up. shipping expensive 140517031868 Altos V-H Serial ASCII terminal 130491138458 Altos x086 Multibus Adapter Board with Tapemaster card They have a bunch of PS2 computers also at the moment. No connection with The Hackery in Vancouver BC, Canada other than as a customer. Paxton -- Paxton Hoag Astoria, OR USA

15 years, 5 months

7
6
0 0

Ted Nelson interview

by evan＠snarc.net

Starts at 41:35 here: http://www.awakemedia.com/DrFuture/DrF37_Feb222011_TedNel.mp3

15 years, 6 months

9
17
0 0

Zenith Z-100 sought

by bdamer＠digitalspace.com

CC team, Martin Howard is putting together a display for the Pentagon and seeks (to purchase) a Zenith Z-100, like the following: http://www.digibarn.com/collections/systems/zenith-100-original/index.html If anyone has a source for this please contact him directly at: martinhoward at sympatico.ca 416-690-7432 Bruce

15 years, 6 months

1
0
0 0

Fujitsu Etherstar 86950B Doc

by ken＠seefried.com

Does anyone have a manual/datasheet/doc the for the Fujitsu Etherstar 86950B Ethernet controller? My Google-Fu has failed. I'm writing a driver for an old VMEBus card and there are a few things that I'd like to understand better. KJ

15 years, 6 months

1
0
0 0

DEC Current Loop Connectors

by michael.99.thompson＠gmail.com

Who is the manufacturer and what are the part numbers for the male & female 20mA current loop connectors and contacts that are commonly used on DEC equipment? -- Michael Thompson

15 years, 6 months

3
2
0 0

FW: eHam.net ad [homebrew S-100 68K CPU board]

by lynchaj＠yahoo.com

> > The following is a ad from eHam.net: > > Title: Motorola 68000 System > > Description: Unique 68000 S-100 CPU board and assorted other boards and > engineering notes for sale. The board is the design feature of my 68000 > book published in 1987. Photos and details at > http://wilcoxengineering.com/68000-microprocessor - I can provide more > specifics for serious inquiries only. > > The MR-8 concept and the communication-stack C code could form the basis > of a modern co-processor product for data collection, radio control > control, etc. All the code and papers are part of the collection. A > possible business opportunity growing out of an older processor - or an > engaging hobbyist project! > > Will not split; this special historical collection stays together. Contact > me through the site. > > ----- end of message ----- > > > You can see this ad in full at: > > http://eham.net/classifieds/detail/338428 > > > This email was sent to you from Alan D. Wilcox (W3DVX) through a > notification > system on eHam.net. > [AJL>] FYI anyone interested in a famous S-100 68K CPU board prototype. This is the board Prof Wilcox used in his book on 68000 system design and troubleshooting. A real historical piece! Thanks! Andrew Lynch

15 years, 6 months

2
1
0 0

S-100 4MB SRAM PCBs

by lynchaj＠yahoo.com

Hi! I did a recent reorder of the S-100 4MB SRAM boards and have a few left over. If you would like one they are $20 each plus $3 shipping in the US or $6 elsewhere. These boards were very popular last year and many builders requested for another batch. I got some extra PCBs anticipating there would be others coming along later. These boards have no known defects AFAIK and dozens builders have gotten them since last year. They can use either SRAM or Flash memory chips and are all DIP/PTH construction for easy assembly. Please contact me if you would like one or more. Thanks and have a nice day! Andrew Lynch PS I set up a Google Group for announcements on the S100computers and N8VEM S-100 projects called N8VEM-S100

15 years, 6 months

1
0
0 0

VCF East -- early GUIs exhibit

by evan＠snarc.net

Whoever registered an exhibit about early GUIs, you need to contact me, there's a problem with your registration -- for starters it lacks your name!

15 years, 6 months

2
1
0 0

Microsoft Online

by silent700＠gmail.com

OK, does anyone know what this is?? http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=140474798391 Google fails me on this, other than to find that a guy once wrote a manual for it. My (uninformed) guess is that it's an early TCP/IP stack for Windows 3.x. I'm almost tempted to buy it to find out, were it not for the Canadian shipping. -- jht

15 years, 6 months

7
7
0 0

VCB02 woes in a MicroVAX III

by derschjo＠mail.msu.edu

I'll attempt to keep a long story short here: I have over the past few years been putting together a MicroVAX III; I have a KA650-B CPU, 16MB of memory, a CMD SCSI interface and a DEQNA ethernet interface. A couple of years back I got a VCB02 and finally this week I got ahold of a BC18Z cable so that I can actually connect the VCB02 to a monitor/keyboard/mouse :). I've got everything installed and wired up this evening, the problem is, I can't seem to get it working. On powerup, the monitor syncs with the video signal the VCB02 is sending out (and I get a brief screen with some garbage on it followed by a black screen), and the keyboard emits a couple of very short beeps during the diagnostic cycle, but the MicroVAX doesn't seem to acknowledge the existence of the VCB02. All diagnostics pass. So, a few questions: - Is there a specific ROM version I need in order for the KA650 to recognize the VCB02? I have V1.2/0123 which seems pretty early (given that I've seen references to 5.3 on the 'net). If so, anyone know where I can find a dump? - What keyboards is the VCB02 compatible with? I'm using it with an LK201 from my VT220 currently, and all four LEDs are lit constantly, which starts me to wondering... - Are there any restrictions on slots/card ordering I should be concerned with? This is in a BA23 backplane (which originally housed a MicroVAX I) Thanks! Josh

15 years, 6 months

4
13
0 0

RL02 head numbering

by chrise＠pobox.com

I'm trying to fix up an RL02 that throws constant errors in XXDP's ZRLMB1 test from head 1. In, http://www.bitsavers.org/pdf/dec/disc/rl01_rl02/EK-RL122-TM-001_techAug82.p… "RL01/RL02 Technical Manual" on page 58, it shows upper head (1) and lower head (0). But, http://www.bitsavers.org/pdf/dec/disc/rl01_rl02/RL02techDescr.pdf throughout refers to the upper head as 0 and the lower as 1. Which "1" is ZRLMB1 refering to? ;-) Chris -- Chris Elmquist

15 years, 6 months

5
7
0 0

Identify core board?

by jfoust＠threedee.com

I recently acquired: http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=320652132954&ssPageName=… but I don't know enough about 70s minis to recognize which sort of system it came from... - John

15 years, 6 months

8
11
0 0

VCF East 7.0 updates

by evan＠snarc.net

Some updates .... 1. VCF East 7.0 is on Facebook: http://www.facebook.com/pages/Vintage-Computer-Festival-East-70/12799934393… Yes, that link stinks. Facebook says we need 25 page fans before we're entitled to a customized link. So please "like" and become a fan of our page ASAP. 2. Dan "Ragooman" Roganti will run a "Build your own transistor logic circuit" workshop. Neat! 3. Our exhibit registration is open at http://www.vintage.org/2011/east/index.php (click the 'exhibits' link on the top right), BUT, it currently only works for people who previously registered. It's not working for new registrants. We're trying to fix that. 4. So far we have lectures confirmed about UNIVAC/Unisys and about the heydey of homebrewed microcomputing in the NYC, NJ, and Philadelphia region. We're working to create lectures about Monrobot; Bell Labs' TRADIC; Electronic Associates; the IBM 1130; Jason Scott's Get Lamp; and our future museum plans. We'll announce those when they become official. 5. So far four exhibitors signed up. We expect 20-30 overall, in line with our past VCF Easts. 6. We'll also have consignment sales, a used book sale, and museum tours. 7. This year's VCF East t-shirt will be AWESOME. The only way to get one is to be there. :)

15 years, 6 months

1
2
0 0

Early days of TCP/IP on the desk (was Re: Microsoft Online)

by tshoppa＠wmata.com

>> I was on the MSN team and we were building an AX.25 network > Have you read "Barbarians Led by Bill Gates" ? > What a mess. Apple was no better, though (eWorld, etc.) I don't > remember much push for broadband as mentioned in "Barbarians" I came from the academic side where Ethernet networking had been standard for some time by the mid-90's and getting networks of VAXen and Suns to interoperate was a breeze. In contrast the mid-90's era focus by consumer OS's (read that as "Windows and bolt on products") on the modem as the lynchpin in networking, was simply bizarre to me. By that time on PC-clones with MS-DOS we had been using the NCSA stack for Telnet and FTP and all the other good stuff, for many years. Completely stable and just worked. I was especially fond of a simple configuration of MS-DOS Kermit. I was completely stumped by Windows 95 networking and Trumpet Winsock. They made it a zillion times harder. To this day whenever I have to configure Windows networking and am forced to click on all the variations of "No I don't have an ISP but I can still connect to the internet" I still become enraged. Tim.

15 years, 6 months

5
5
0 0

Egads!

by chrism3667＠yahoo.com

http://cgi.ebay.com/INTEL-P4040-D4040-C4040-PROLOG-MICROPROCESSOR-BOARD-/30…

15 years, 6 months

3
3
0 0

Bit of DEC Trivia

by bqt＠softjar.se

On 02/24/11 19:00, Al Kossow <aek at bitsavers.org> wrote: > On 2/24/11 2:58 AM, Philipp Hachtmann wrote: >> > For me it sounds quite more interesting to format a tape on a normal drive - and then use it on a drive which has been adjusted to spin faster...:-) >> > > It shouldn't matter over the range that the G888A can decode it. DECtape uses Manchester encoding, so it is self-clocking. Yes, but you need the clock track in order to write. So, read is self-timed, and write is done with the help of the timing track. And yes, the speed of the motor will affect how fast data comes in/out, but only indirectly, since it's the clocking off the data from the tape that matters. Tricks to increase speed would be to run an already formatted tape faster or to format a tape at a slower speed. Formatting a tape at a slower speed will also make it possible to fit more data onto the tape (obviously). > Head skew relative to the timing tracks becomes more of an issue, but even that was mitigated by putting redundant tracks > on different parts of the tape and or-ing the heads together. I'm not sure how much head skew could happen. The data from the tape is read by just one head, with 10 tracks. So, the timing track is read at the same point as the data. You could possibly get some kind of skew if the signal was delayed through the electronics. > The trick with holding your thumb on the reel became necessary when DEC started shipping less tape on the reel than > certain PDP-8 operating systems expected. Yes... Johnny

15 years, 6 months

3
2
0 0

Early days of TCP/IP on the desk (was Re: Microsoft Online)

by ethan.dicks＠gmail.com

On Fri, Feb 25, 2011 at 3:04 AM, Ian King <IanK at vulcan.com> wrote: > Yes, Windows 95 was the first product to incorporate TCP/IP - and I remember the panic it caused. ?:-) ?I was on the MSN team and we were building an AX.25 network - but Bill Gates (quite correctly) saw that TCP/IP was going to quickly replace the telco-based POPs. ?We made the change to include TCP/IP "in the box" *in 1995*. ?We worked a lot.... ?-- Ian I remember that transition. In 1994 and early 1995, I installed Trumpet Winsock on a lot of Windows 3.1 machines. Unfortunately, even up to the August release of Win95, the typical desktop for our users was (admittedly obsolete by that time) a 386SX16 (Dell 316 or some variety of Compaq box) with 2MB of RAM, no hard disk, a 10Mbit Ethernet card, and booting off of a floppy to attach to a Novell Netware server to load apps (Lotus 1-2-3, Word Perfect, e-mail (DaVinci!), etc). The Novell servers, handling hundreds of users each, were high-end Compaq 486 boxes with up to 64MB of memory and a gig or two of disk. If you were blessed by the Network Engineer, your login could be permitted to load the seat-license-locked TCP stack for DOS/Novell and use Telnet and FTP. I had a lot more fun in the science lab where the standard machine was a Mac IIci or one of the SPARCstations (which had TCP/IP set up by default). But thank you, Ian, for your work. I did enjoy setting up TCP/IP out of the box when Win95 came out, vs having to go get bits and have grudging support from our Network guys about getting addresses, etc. (they used to be *very* stingy with assigning out blocks of IP addresses before the days of NAT Firewalls and private address space - the proliferation of TCP/IP to every desk pushed that change). -ethan

15 years, 6 months

4
3
0 0

Microsoft Online

by jfoust＠threedee.com

At 09:46 PM 2/24/2011, Jason T wrote: >OK, does anyone know what this is?? > >http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=140474798391 > >Google fails me on this, other than to find that a guy once wrote a >manual for it. A 1991 press release that says the OLE 1.0 spec can be downloaded >from Compuserve and Windows Online: http://www.accessmylibrary.com/article-1G1-11124989/ole-microsoft-object-li… - John

15 years, 6 months

1
0
0 0

an amazing device for your perusal

by chrism3667＠yahoo.com

http://cgi.ebay.com/Amiga-Atari-St-Amstrad-PC-floppy-disk-drive-EMULATOR-/1… Andrew?

15 years, 6 months

12
29
0 0

Fwd: FS. SETI Radio Astronomy Ground Station

by lbickley＠bickleywest.com

FYI Lyle ---------- Forwarded Message ---------- Subject: [TekScopes2] OT: FS. SETI Radio Astronomy Ground Station Date: Thursday 24 February 2011, 20:43:17 From: "J. Forster" <jfor at quik.com> To: hp_agilent_equipment at yahoogroups.com, Tekscopes2 at yahoogroups.com, Vintage-Military-RADAR at yahoogroups.com, AILtech at yahoogroups.com CC: EIP_Microwave at yahoogroups.com, Watkins-Johnson at yahoogroups.com, ArmyRadios at yahoogroup.com, Milsurplus at mailman.qth.net, "Rachel Tortolini" <dr.rtortolini at gmail.com> >From another list, -John ================= ---------------------------- Original Message ---------------------------- Subject: Re: For Sale Ground station. From: "Rachel Tortolini" <dr.rtortolini at gmail.com> Date: Thu, February 24, 2011 8:07 pm -------------------------------------------------------------------------- Greetings: I have a radio astronomy/seti/ground station for sale minus the antenna. The equipment covers microwave to baseband and fft signal processing. the equipment fills 12 six foot racks. (It covers 10 by 30 foot storage locker. Must sell as I have Parkinson's Disease and must retire. Anyone sincerely interested may contact me and a database can be sent with pictures, etc. Location is Hawaii. You will need a mover but it is all packed and ready to go. I am willing to negotiate price compensation for your shipping cost. Please contact me off-list. Rachel ================= ----------------------------------------- -- Lyle Bickley, AF6WS Bickley Consulting West Inc. http://bickleywest.com "Black holes are where God is dividing by zero"

15 years, 6 months

1
0
0 0

Bit of DEC Trivia

by ggs＠shiresoft.com

Hi, Found this out and thought I'd share it with the list (note I'll send the answer later after seeing the "guesses"). Q: How many DECTapes (images) can fit on a 1TB HDD? (Also note, this is a "trick" question). Have fun. It'll be interesting to see the answers! :-) TTFN - Guy

15 years, 6 months

20
27
0 0

WTD: 28C16 EEPROM in PLCC package

by classiccmp＠philpem.me.uk

Hi guys, Seems the EEPROM which stores the MAC address in my HP 16500B logic analyser has developed amnesia. That is to say, it forgets everything a few days after being programmed, and as of today it won't even program correctly. Does anyone have a spare PLCC-packaged 28C16 EEPROM or two knocking about? Ideally I'd like another of the original part, a Samsung KM28C16J-20, which is specced for 200ns. A Catalyst/ONsemi CAT28C16 or any of the many variants should also suffice... My local supplier lists these as "special order only" -- with a ?16+VAT charge to do so, a monstrous minimum order (something like 100 units) and a three week factory lead time. I need maybe three of these at most... Thanks, -- Phil. classiccmp at philpem.me.uk http://www.philpem.me.uk/

15 years, 6 months

2
1
0 0

Radius Pivot monitor help needed

by sellam＠vintagetech.com

Has anyone ever worked with a Radius Pivot monitor? I'm trying to get one hooked up to a Mac IIci or IIsi but I need drivers and an appropriate video card. I'm pretty sure I have both but finding them at this point will be a major pain. If anyone has the drivers handy, and can let me know what an approproiate video card would be to interface the monitor to a Mac, I would greatly appreciate the help. Thanks! -- Sellam Ismail Vintage Computer Festival ------------------------------------------------------------------------------ International Man of Intrigue and Danger http://www.vintage.org [ Old computing resources for business || Buy/Sell/Trade Vintage Computers ] [ and academia at www.VintageTech.com || at http://marketplace.vintage.org ]

15 years, 6 months

4
3
0 0

SCSI -1 to IDE and SD project

by lynchaj＠yahoo.com

Forgot the URL for the SCSI to IDE/SD project http://n8vem-sbc.pbworks.com/w/browse/#view=ViewFolder <http://n8vem-sbc.pbworks.com/w/browse/#view=ViewFolder&param=SCSI2IDE> &param=SCSI2IDE Thanks and have a nice day! Andrew Lynch

15 years, 6 months

2
2
0 0

Books available in Santa Cruz, CA

by doc＠vaxen.net

Forwarded for a friend... Doc Subject: Free To Good Homes: books of datasheets in Santa Cruz, CA I've been alerted to free datasheets and other similar materials from the 1980s at UC Santa Cruz. The books are on the first floor of the Jack Baskin Engineering building at UCSC. Photos and more information are here: http://bluebox.celestrion.net/ucsc-books/ -- Jonathan Patschke

15 years, 6 months

4
3
0 0

Sniping Does Not Require Justification!

by jfoust＠threedee.com

At 07:58 AM 2/21/2011, Liam Proven wrote: >Sniping subverts how auctions work. In the average real-world auction that I'm accustomed to, at best as a bidder you might need to register in advance. Once you're there, there is no requirement to notify all other bidders of your interest in an item. In fact, bidders tend to be quite subversive about their interest in an item, so as not to draw attention to themselves, the potentially more-valuable item, or their interest in it. You're free to bid "in the last second." Yes, the auction continues at that point, and that's different than eBay. You're not just wishing for an auction format where all bidders must make their presence known, and then a moment where no additional bidders can register before bidding begins. You can't seriously be wishing for an auction format where all other previous bidders and their max price be known before you bid. We can't just wave our hands and think that it would solve the problem if eBay extended the auction N minutes beyond every moment there was a bid. That would greatly encourage the demand for and use of automated bidding tools. Part of the appeal for buyers and sellers on eBay is that you are generally searching items you know will be for sale and that you can bid on immediately. Would you be happier if multiple proxy bidders all registered to bid and made some token bid just to be part of the game? - John

15 years, 6 months

2
1
0 0

Big PDP-11 pile on Ebay

by jfoust＠threedee.com

At 11:14 PM 2/3/2011, William Donzelli wrote: >There is currently a pretty big PDP-11/44 collection on Ebay (just >search for PDP-11/44). It is located in Milwaukee. Item 130481622084 ? Only $500 so far? Nine days to go. Cheese, it would be worth that even if you ground it up for gold scrap. :-) I'm in the area but I don't know what I'd do with it or where to put it. - John

15 years, 6 months

31
66
0 0

Odd resistor failure

by tshoppa＠wmata.com

>> But... electronic ballasts are switching devices and the current >> is not steady-state. If twice the current flows for half the time, >> then the power dissipation doubles (Remember, I-squared-R, you doubled >> I, so I squared goes up by a factor of four.) > Let's do the math. Suppose the current went from 0.5A to 4A. > Probably, the 2A fuse in series with this thing would blow. If that > didn't happen, the resistor would be called on to dissipate about 5W-- > on a transient basis, the resistor could handle this; on sustained > basis, the resistor would overhead and discolor and the PC board > would also be discolored. That didn't happen. > The resistor is a plain-Jane 2W light-brown painted body with orange- > orange-silver-gold markings. No letterings or other notations, no > discoloring--just two paint chips missing from the body. > I can post photos if you want. You might have heard the rule of thumb that "in the case of an overcurrent fault, the most expensive component in the circuit will burn out to protect the fuse". That rule is only slightly facetious. In reality almost any component (no matter what the $ value) will burn out to protect the fuse :-). You might think I'm being facetious but I'm not! I still suspect that, for example, bad bulbs or some other ballast failure had taken out the resistor. Fluorescent ballasts and CFL's are not known as places where manufacturers spend many dollars on high quality components to increase lifetime and decrease the possibility of failure. Resistor wattage ratings are not always mathematically related to the maximum voltage or current that you should put on/through the device. At the high ohm end (say a 22MOhm 1/2W resistor, which would imply 3300 volts) the calculated voltages are more than the bodies are rated for, and at the low ohm end (especially for lowest-bidder resistors) there can be weak spots in film resistors that become "hot spots" in transient overcurrents you might think the resistor should be able to survive. Good metal films can survive massive overload, and all they do is glow bright orange and burn off their outer coatings. But I strongly hint above, that such good components will not generally be found in ballasts or CFL's. Tim.

15 years, 6 months

3
2
0 0

I'm looking (been looking actually) for a Zenith Z-100/120

by chrism3667＠yahoo.com

Preferably *not* the low profile version (which means to me the models that don't have a built in monitor). But then again maybe I'd be better off, because those models had RGB video capability, IINM. I don't know, tell me what you got. Also *still* looking for Atari ST/Mega/TT/Falcon stuff, working or not. Does anyone know of the Atari ST related machine that had a built in monitor? Saw the thing on eBay ages ago, should have bid on it.

15 years, 6 months

2
1
0 0

anyone in Ft.Lauderdale that can do me a big flavor?

by chrism3667＠yahoo.com

It involves shipping an item. I can help the same person out if they need helps up here...

15 years, 6 months

1
0
0 0

[OT] Sunfire V880 Diagnostic Key

by austin＠ozpass.co.uk

I hope that you can forgive the off-topic post, but I find myself in desperate need of a "diagnostic" key for a Sun Fire V880. They're the same for all v880's but I can't get similar ones to fit. I live in the uk and will willingly send beer vouchers in exchange. -Austin. Sent from my iPhone

15 years, 6 months

1
0
0 0

IBM PC-Radio

by chrism3667＠yahoo.com

Hi Is me and Uncle Roger and the other dude in Italy the only ones w/these things? I have 2, but neither turn on. Anyone know what type of power it requires? I had thought these had color stn displays or something, but now I'm thinking they're just mono. Halp.

15 years, 6 months

1
0
0 0

SCSI -1 to IDE and SD project

by lynchaj＠yahoo.com

Hi! Several weeks ago there was a discussion on CCTALK about a free/open SCSI to IDE and SD project. I designed a PCB using the Z53C80 and a Z80 with RAM/ROM/UART/IDE and SD. There is a prototype available waiting for some interested builders to take on the project. As far as I know none of the builders have a completed unit although I think if we had at least one working unit the project would make some real progress. I have four remaining SCSI to IDE/SD prototype boards so if anyone would like to join the project as a software developer please let me know. I believe much of the software can be reused from previous N8VEM and/or other free/open software projects. http://n8vem-sbc.pbworks.com/w/page/35044530/PCB-Inventory Thanks and have a nice day! Andrew Lynch

15 years, 6 months

3
2
0 0

GSX porting project

by lynchaj＠yahoo.com

Hi! Recently on the N8VEM project we've developed an uPD7220 GDC display board. It can display 16 colors on a VGA compatible monitor in 640x480 or 800x600 resolution. The uPD7220 Graphic Display Controller is an intelligent controller peripheral for raster graphics. It was used in a variety of early microcomputers such as the NEC APC in the late 1970's and early 1980's. http://www.old-computers.com/museum/computer.asp?c=333 http://n8vem-sbc.pbworks.com/w/browse/#view=ViewFolder <http://n8vem-sbc.pbworks.com/w/browse/#view=ViewFolder&param=ECB%20uPD7220% 20V2%20Prototype> &param=ECB%20uPD7220%20V2%20Prototype Now that the hardware is maturing, I would like to use it for a port of GSX to the N8VEM SBC V2 (Z80 based) and/or SBC-188 (80C188 based). GSX is a predecessor to the more widely known GEM graphical user interface operating system. I have PCBs for the project. There are both 8 bit and 16 bit versions of GSX roughly corresponding to CP/M-80 and CP/M-86 operating systems. The N8VEM SBC V2 already has CP/M 2.2 and CP/M 3.0 and the SBC-188 runs CP/M-86, FreeDOS, etc. The project would be porting the existing GSX code to the N8VEM hardware. Here are some useful information links on GSX-80 and GSX-86 http://en.wikipedia.org/wiki/Graphical_Environment_Manager http://jba.freeshell.org/gsx-readme.html http://www.cpm.z80.de/download/gsxdrv-s.zip http://www.gaby.de/cpm/drilib.html http://www.z80.eu/gsx.html http://www.gaby.de/cpm/manuals/archive/index.htm http://www.gaby.de/cpm/roche/index.html http://www.gaby.de/cpm/roche/NCRGRAF.ASM (direct application to the uPD7220) http://www.gaby.de/cpm/binary.html If you are a software intensive builder you may enjoy working on this interesting project. The project would involve compiling and porting the legacy GSX sources to run the graphical primitive routines. http://en.wikipedia.org/wiki/Graphical_Kernel_System Thanks and have a nice day! Andrew Lynch

15 years, 6 months

2
1
0 0

Looking for Papertapes for PDP 11/05

by billdeg＠degnanco.com

I have a PDP 11/05 all dressed up and ready to go, stock config. Does anyone have or be willing to make copies PDP 11/05 or 11/10 papetape programs available? (diagnostics, assembler, editor, utilities). I have an ASR 33 and the computer has 8K core. Worst case I guess I could toggle in the code, then punch it for use next time! Bill Degnan

15 years, 6 months

2
1
0 0

Odd resistor failure

by tshoppa＠wmata.com

Chuck writes: > I've been going over a small stack of failed T8 bulb solid-state > fluorescent lamp ballasts from about the mid 90's. They all have the > same failure and it suprised me. > > There's a 2W 0.33 ohm carbon film resistor used as a current sensing > element. In all failure cases, the resistor has failed open, with no > signs of burning, but rather the outer paint flaking off. > > To me, this is a puzzle. At 120v, the current through an 0.33 ohm > resistance in series with a 64W load is about half an amp. I2R gives > less than a tenth of a watt power dissipation across the resistor. > (There's also a 2A fuse in series with the whole circuit). > > I replaced the failed resistors with 5W composition ones of the same > value, and they seem to work okay. > > But the original failure has left me scratching my head. Does anyone > have an insight on this type of failure? If the current is steady-state, your math works out correctly. But... electronic ballasts are switching devices and the current is not steady-state. If twice the current flows for half the time, then the power dissipation doubles (Remember, I-squared-R, you doubled I, so I squared goes up by a factor of four.) All that said, it has little to do with your electronic ballasts :-) I betcha the original resistor was a fusible resistor to begin with. SMPS 101: when you see a blown up or burnt out component, you can bet that some other component failed and took it out. Typically a fusible resistor will heat up to mildly-red-hot before it blows. Do the same with a non-fusible metal film and it'll be fine (if discolored!). Tim.

15 years, 6 months

2
1
0 0

where do I get a 18 pin DIP surface mount socket?

by technobug＠comcast.net

On un, 20 Feb 2011 17:13:54 -0800, Eric Smith <eric at brouhaha.com> wrote: [...] > Digikey has a $25 minimum order. Digikey killed their minimum some time ago. To quote from their "Digi-Key Web Site Terms of Use and Conditions of Order" <http://dkc1.digikey.com/us/en/mkt/Terms.html?WT.z_ref_page_id=sitemap_quant…> " 7. Handling Charge. There is no minimum order or handling fee." However, where something like the socket could be shipped US Mail for under a dollar, they stick the item in a box and UPS it for over US$ 6... CRC

15 years, 6 months

2
1
0 0

Odd resistor failure

by cclist＠sydex.com

This may seem off-topic at first, but I realize that folks here do SMPSU repair a lot. My thought was that it might be applicable, since they're basically the same thing--the ballast runs the lamps with a 30-40KHz AC voltage. I've been going over a small stack of failed T8 bulb solid-state fluorescent lamp ballasts from about the mid 90's. They all have the same failure and it suprised me. There's a 2W 0.33 ohm carbon film resistor used as a current sensing element. In all failure cases, the resistor has failed open, with no signs of burning, but rather the outer paint flaking off. To me, this is a puzzle. At 120v, the current through an 0.33 ohm resistance in series with a 64W load is about half an amp. I2R gives less than a tenth of a watt power dissipation across the resistor. (There's also a 2A fuse in series with the whole circuit). I replaced the failed resistors with 5W composition ones of the same value, and they seem to work okay. But the original failure has left me scratching my head. Does anyone have an insight on this type of failure? --Chuck

15 years, 6 months

4
5
0 0

Books available

by jonas＠otter.se

I don't know if this is totally off base for this list. If so I apologise. Anyway, it is "related to classic computers" (just) somehow. I have the following books available for the cost of postage: Oracle8i DBA Bible, with CD. IDG Books 2000, 1115 pages Oracle8.0.4 for Windows NT: Getting started Oracle7.3.4 Server for Windows NT: Getting started Oracle Designer/2000 Rel. 2.1 installation guide Oracle Network Products 2.3.4/Windows installation guide Oracle Net8 rel 8 for Windows NT, 95: Getting started They are in decent condition. The last one has some coffee stains. I live in Sweden/Gothenburg. Jonas

15 years, 6 months

2
1
0 0

where do I get a 18 pin DIP surface mount socket?

by teoz＠neo.rr.com

Working on my 701c Thinkpad I destroyed an 18 pin DIP socket (surface mount) that connects the modem card to the main motherboard. Anybody have something like this or know where to get one (checked ebay)? All the pads are still intact so soldering in another one will not be a problem.

15 years, 6 months

2
1
0 0

looking for a nice 5150/5160 in tri-state area

by chrism3667＠yahoo.com

it doesn't have to work even. Just in good shape. Keyboard and monitor not needed either. Heck even an empty case would work. The expansion box would too in fact!

15 years, 6 months

5
4
0 0

ASR 43 Paper tape punch/reader needed

by ball.of.john＠gmail.com

I have an ASR 43 teletype machine (though you could arguably call it a "classic" teletype as it uses a dot matrix print head and lacks that classic teletype sound) and I'm looking for the matching paper tape punch/reader that was made for it. There isn't much information about it online but the model for it is M42, M43, M4350, or something similar. It looks like a sophisticated Dust Buster. http://www.baudot.net/teletype/pics/M43-Paper-Tape-Unit-1.jpg What are the chances anyone might happen to have one squirreled away? I want to try a couple programs on my PDP and print out some test tapes for a reader built for a TRS-80 model 1. John

15 years, 6 months

1
0
0 0

Commodore 1084S monitor

by chrism3667＠yahoo.com

Anyone familiar w/this unit? The power switch in the back won't stay engaged (you press, and it clicks, and power comes on, but it pops back out, and monitor shuts off). I imagine there's probably a part # on the switch, but I forgot to look this afternoon. Asked in case anyone's familiar w/it.

15 years, 6 months

8
13
0 0

WTD: HP 16500B LAN card (16500L) EEPROM dump

by classiccmp＠philpem.me.uk

Hi guys, Does anyone have a HP 16500B logic analyser with a 16500L LAN card installed? The EEPROM on my card seems to have been hosed, and now the analyser is refusing to boot, instead opting to display the message "Corrupted LAN Board! LAN not functional". The chip is a Samsung KM28C16, PLCC packaged, sitting next to the I/O connector on the LAN card. If anyone has an EPROM programmer kicking around, I could really use a dump of a known-good EEPROM, or alternatively a replacement 16500H or 16500L LAN card if someone has one in a parts-mule 16500A or 16500B mainframe. Thanks, -- Phil. classiccmp at philpem.me.uk http://www.philpem.me.uk/

15 years, 6 months

2
3
0 0

classiccmp server hardware

by jwest＠classiccmp.org

A few of you might have noticed some recent problems with the classiccmp server ;) The machine has six 300gb hard drives. Two are PATA, and set up as a mirror that contains just the OS and mailing list. The remaining four are sata and set up as a zfs raidz pool. One of the two drives in the OS mirror failed. That did not cause downtime of course, but I noticed it when the other failure occured. One of the drives in the raidz set (websites, user data, etc.) also failed. Because it's raidz, that shouldn't have caused a problem. However, it marked the raidz set as failed and wouldn't mount it, saying there was not enough drives left in the set. I can only guess this was a bug in zfs on that system. Thanks to hard work from Ryan, the machine is back up. Basically he pulled dd images of the remaining drives in the zfs set, imported them into zfs on one of his machines and the data re-appeared. A two drive mirror was set up on the remaining working drives and then all the data copied back. This took a few days due to the volume of data and network links. I thought that was the end of the problems. But no...... Once the machine was back up, someone said websites were up but no mailing list (I had verified that it was back up after the data re-import). Checking again, now the last drive in the OS mirror is having read errors and is probably going to fail soon. No other systems in our datacenter are having issues like this, so I suspect it's not power related. Long story short, the machine is back up, all website/user data is restored, and there's no loss of data. However, I can't be sure it will stay up with an OS hard drive mirror set where one drive is dead and the remaining drive is having lots of read errors. My plan is to go buy six new sata drives for the server, probably 1tb's, plus a 4 port sata controller. I'd prefer to buy the drives new rather than take drives as donations just due to the above issues and time constraints. I found some seagate sata3 1tb 32mb cache drives for $60 each plus tax. Adaptec 1420sa controller is about $90, so the total is about $450. If anyone cares to donate to help cover the purchase, paypal jwest at classiccmp.org Now I just have to find another machine to move the list & web content off to, rebuild the classiccmp server, and move everything back :) Jay

15 years, 6 months

1
1
0 0

HP9826 Rocky Mountain BASCI

by cclist＠sydex.com

Does anyone have a clue on how to interpret the binary (STORE format?) form of Rocky Mountain BASIC as used on an HP9826? Thanks, Chuck

15 years, 6 months

2
4
0 0

Seattle: Looking To Borrow Assorted Apple Gear

by ohh＠panix.com

Hey, all, especially those in Seattle with old Apple gear: Seattle Repertory Theatre is producing "The Agony And Ecstacy Of Steve Jobs", a show by Mike Daisey about Apple's and Jobs' various trials and tribulations over the years. They're hoping to put together a lobby display of several of Apple's old hardware. To that end, they're looking for gear to borrow between mid-April and late May; and to show their appreciation they're offering free tickets for the production and "your picture hanging proudly next to your relic" (assuming you're interested in that, o'course). Their wish list includes: -an Apple II, IIe and/or IIc; -an Apple III; -a Lisa; -a Mac Classic, Mac SE/30, or similar; -Macintosh Portable (1989 vintage); -an early PowerBook, preferably 100 series; -a Quadra; -Newton MessagePad; -QuickTake, an early Apple digital camera; -20th Anniversary iMac, circa 1997; -iMac G3; -an early Apple flat panel display, circa 1998-2001-ish; -Power Mac G4 cube; -G4 Powerbook; and -a NeXT workstation (though I think a NeXTcube would work too). Though they didn't list it, I have to think that an Apple I would also be extremely welcome. In fact, I think the only reason they didn't put it on their list is because actually _finding_ one seems so unlikely. :) ...Anyway, if you're in or near Seattle and have some of this gear and want to support the arts and/or get your gear displayed publicly and/or want free theatre tickets, or if you have further questions, feel free to e-mail the Rep at <info at seattlerep.org>. Feel free to forward or repost. -O.-

15 years, 6 months

1
0
0 0

Texas Instruments Portable Professional (green) - eBay

by chrism3667＠yahoo.com

http://cgi.ebay.com/TEXAS-INSTRUMENTS-PORTABLE-PERSONAL-COMPUTER-2238675-/2… In Canada. offer him a 100$. My advice. I already have the color version. Got some s/w if anyone needs it.

15 years, 6 months

1
0
0 0

386 motherboard debugged, and a dead HP 16500B

by classiccmp＠philpem.me.uk

Well I certainly can't say this evening wasn't entertaining. Got the HP 16500B out of the cupboard. Powered on to a screen of random lines. Turns out the "base" (Bank0) RAM SIMM had slipped out of the mounting. Power off, all the blades out, push it back in, power on. SYSTEM SELF TEST FAILED: SEE SERVICE MANUAL System board: FAILED Touch screen: IMPAIRED Base RAM: FAILED Oh joy. Cleaning the (rather dusty) touchscreen surround sorted the touch screen. Reseating the other SIMM sorted the Sysboard failure, but the memory test kept failing. Swapped both SIMMs for a 64MB set I had kicking around -- thus giving me a 64MB HP 16500B. Powered back up, "SELF TEST PASSED, LOADING SYSTEM SOFTWARE." Now we're getting somewhere. Or not. "Corrupted LAN Board! LAN Not Functional!" So evidently the 28C16 parallel EEPROM on the 16500L LAN card has developed a case of amnesia (that's if the Random Lines Event didn't nuke it). I got to the System screen, but the 16555D isn't triggering, and trying to configure the Ethernet adapter hard-crashes the analyser. Does anyone happen to have a dump of the 28C16 EEPROM on a 16500L LAN card, or even a spare 16500H or 16500L card? Or an E2479A 16500A/B --> 16500C upgrade kit... or the bits of a 16500C needed to upgrade a 16500B... I think I'll stop there :P Apparently you need HP-specific Factory Test software to reprogram the EEPROM, which was AIUI never released outside of HP. I figure it should be possible to reprogram the chip with a couple of wires, some solder, and a 28pin turned-pin DIP socket, but I need a known-good image first. So anyway, I figured I'd try and soldier on and figure out what was wrong with the 386 motherboard. In with the POST card... yep, still dying at checkpoint code 06, which basically means the BIOS couldn't read the shutdown register in the RTC. Off with the old RTC socket, a quick clean up with Flux-off, and under the microscope it goes. I started tracing the under-chip tracks out, following them with the tip of a mechanical pencil. Until, that is, one of them crumbled... Hmm. Copper isn't supposed to do that. Out with the Xacto. Scrape off the solder resist... hmm, black fuzz, but no copper?! Apparently the battery did more damage than I thought! Eventually I found a total of three broken or damaged tracks, all on the data bus. I bridged them with Roadrunner wire (really thin enamelled copper wire, like transformer wire). In goes the new socket and.... 0d : 0c Hmm, still no go. So I pulled the RTC chip, put it dead-bug style on the desk, and started looking at the tracks again. And then I saw it, out of the corner of my eye... The VCC pin had broken off the RTC chip. So what did I do? I fixed it. I took a fresh turned-pin IC socket, and inserted a piece of 22SWG tinned copper wire into the top-right corner socket (i.e. VCC). Clipped it back to ~5mm, then put the socket to one side. Next, I used a triangular needle file to cut a notch into the plastic of the chip, right above the VCC pin stub. A bit of scratching with the Xacto got me enough Vcc pin stub to solder a wire to. Lightly tinned the VCC stub, just for good measure. RTC chip goes into the socket, and the stub was soldered to the 5mm VCC wire. Into the motherboard it goes. POST card in, speaker (on POST card) connected, power on. 0201... 0605... 0d0c... 1F1E... lots of hex numbers... 403F... *BEEP BEEP* dit-dit-dit-dit-dit-dit-dit-dit So it's just passed the chipset and base hardware tests, proven that the mainboard and chipset are alive... and emitted two beeps for a fatal error, and eight error ID beeps. Quick look up... that's a Video RAM R/W Test error, which makes sense because there kinda-sorta isn't a video card plugged in... or anything besides the POST card for that matter. It's at about this point I shouted "King of the lab!". My mother poked her head around the door and gave me a very strange look.... So yeah, the 386 board is basically fixed. I need to hunt down a case for it (the K6 board is inhabiting the 386's old case). I might chuck the thing in the dishwasher to clean off the last bits of dirt and fluff, but at this point it's working and I'm happy. Or I would be if Ye Olde HP Boat Anchor hadn't picked tonight to turn its toes up... Guess you can't win all the time :( And if you question why I call it a boat-anchor, you've obviously never tried to move a 16500B... :) Thanks, -- Phil. classiccmp at philpem.me.uk http://www.philpem.me.uk/

15 years, 6 months

5
5
0 0

Anyone there?

by csquared3＠tx.rr.com

This group seems strangely quiet. I hope nothing bad has happened! BTW, I realize that none of my posts are all that important. However, I do find it curious that I usually see my own posts only if someone else comments on something I said. Does anyone else have this problem and/or does anyone know of a setting I need to change to correct this? Thanks, Charlie C.

15 years, 6 months

4
3
0 0

Iomega Bernoulli Box 20+20 (A220H)

by mbbrutman-cctalk＠brutman.com

I rescued one of these ancient Bernoulli boxes today. It uses the large (8") cartridges at 20MB each, and it has two slots for the cartridges. Other than for hearing some of the folklore about the drives, I don't know much about it. I'd like to see it run and be usable, but I need some help. - Is it SCSI? If so, what's the pinout on the back? It has a 37 pin female connector that I'm not familiar with if it is SCSI. - Where is the head mechanism? Is it fairly robust and protected if there are no cartridges inserted? This one has no major dents, but it has not been babied either. I don't want to waste time on it if it's just going to be a heartache. (I have enough of that already.) - Cartridges look like they are on eBay. They are cheap enough for me to experiment with. - Is there anything I should know about these beasts before I attempt powering on and working with it? Thanks, Mike

15 years, 6 months

11
32
0 0

OT: high powered amps (ben)

by jonas＠otter.se

> > Now for the speakers ... > http://www.decware.com/newsite/homepage.html > If you need details on 1KW speakers, just email them for advice. > Ben. > PS. Remember 500 watts or more will kill small rodents. > Nice! I think I will have to stay well below 1 kW though, tempting though it may be. I live in an apartment and using that kind of gear would probably a) kill the cat b) get me tarred and feathered and run out of town ;-) Jonas

15 years, 6 months

2
1
0 0

MCD 800K 3.5 floppy drive for MAC

by trebor77＠execpc.com

I cleared out most of my MAC/APPLE Stuff awhile ago but I just found this on the Shelf MCD 800K 3.5 floppy drive for MAC. I've seen some discussions on 3.5 Floppy drives. Is this any use to anyone Bob in Wisconsin

15 years, 6 months

1
1
0 0

AlphaServer 1000A - Taken

by indiviniti＠yahoo.com

? Thanks to all who have shown an interest, the Alpha has already been claimed. ? Dale --- On Fri, 2/18/11, Alan Perry <alanp at snowmoose.com> wrote: From: Alan Perry <alanp at snowmoose.com> Subject: Re: AlphaServer 1000A To: indiviniti at yahoo.com Date: Friday, February 18, 2011, 12:06 AM Where is it? On 2/17/11 8:02 PM, cctech-request at classiccmp.org wrote: > Subject: AlphaServer 1000A > To:cctalk at classiccmp.org,chiclassiccomp at yahoogroups.com > Message-ID:<637473.29307.qm at web38208.mail.mud.yahoo.com> > Content-Type: text/plain; charset=iso-8859-1 > > DEC AlphaServer 1000A?pedestal server, in good shape, working state unknown, > but likely does.? Alpha VMS or Tru64 UNIX CD's with apps likely available as well. > Let me know asap if anyone is interested.? Ths is being cleared out of an old DEC > logistics site early this week.

15 years, 6 months

1
0
0 0

VS8000

by michael.99.thompson＠gmail.com

> Roger Ivie [rivie at ridgenet.net] wrote: > >> During development of VAXBI, we were told (by the folks >> working on it) that it was A) not going to be VAX-specific >> (DEC was moving MIPSward at the time) and B) would be open. >> >> We were a bit startled when it was announced as "VAXBI". > > It was never open (in the way that UNIBUS was) but it wasn't VAX-only > as the DECsystem 5800 (iirc) used it too. > > Antonio If I remember correctly there was $250,000 license fee for the "BI Corner" if you wanted to design your own BI board. That doessn't sound open to me. -- Michael Thompson

15 years, 6 months

2
1
0 0

test

by aek＠bitsavers.org

checking if the list is working.

15 years, 6 months

3
3
0 0

Upcoming additions to MARCH Computer Museum collection

by evan＠snarc.net

1. DEC PDP-8e 2. IBM 1130 Come see 'em at VCF East 7.0, May 14-15, InfoAge Science Center, Wall, NJ.

15 years, 6 months

2
2
0 0

5 working Teletypes offered in Cleveland OH

by cclist＠sydex.com

http://www.vintage-computer.com/vcforum/showthread.php?23988 FWIW, --Chuck

15 years, 6 months

1
0
0 0

HP Jamaica HASS deskside in search of a new home

by whdawson＠verizon.net

I was given this a few months ago and finally had the time this evening to look it over. I was told it was fully functional when removed from service last year. It's in outstanding clean condition and both bays are fully loaded with fast/wide differential SCSI hard drive modules. It is located in Washington, PA 15301 and is FREE for pick up. I prefer that it leaves here complete, but if there are no takers then I will consider parting it out. I found the Installation/Service Manual here http://www.dectrader.com/docs/set2/emr_na-lpg28396-1.pdf and everything you need to know about this beast is in there. The following modules are installed: Qty Item --- ---- 2 fan modules 6 2.0GB DF 7200 Disk Module (Seagate ST32171DC) 1 18.2GB DF 7200 Disk Module (Seagate ST118273WC) 2 A3538-67002 Power Module (equivalent to A3538-69002) Also included is the bay to bay SCSI cable and the SCSI wide differential terminator. Please reply to whdawson at my gmail.com address. d8^) Bill

15 years, 6 months

1
0
0 0

JUPITER ACE PCB

by lynchaj＠yahoo.com

Hi! One of the N8VEM builders is interested in making a JUPITER ACE board. He is making a PCB and assessing how many builders would be interested in the PCB. I have little information on JUPITER ACE but it appears to be a small Z80 based SBC which uses Forth. It generates its own video signal and has a keyboard interface. If you are interested in such a board please contact me or let us know on the N8VEM mailing list. Thanks and have a nice day! Andrew Lynch

15 years, 6 months

1
0
0 0

JUPITER ACE PCB

by lynchaj＠yahoo.com

Hi! One of the N8VEM builders is interested in making a JUPITER ACE board. He is making a PCB and assessing how many builders would be interested in the PCB. I have little information on JUPITER ACE but it appears to be a small Z80 based SBC which uses Forth. It generates its own video signal and has a keyboard interface. If you are interested in such a board please contact me or let us know on the N8VEM mailing list. Thanks and have a nice day! Andrew Lynch

15 years, 6 months

1
0
0 0

Anyone off to VCF-UK

by dm561＠torfree.net

Date: Tue, 25 May 2010 19:50:02 -0400 From: William Donzelli <wdonzelli at gmail.com> Subject: Re: Anyone off to VCF-UK >> And I'm telling you that in all my VCF experience, including as the * >> organizer * of four very successful editions, I've found that people >> (attendees and exhibitors alike) go because they relish the community >> aspects. ?Sure it's fun to show off your exhibit, but most people get the >> most kicks from meeting their fellow collectors, etc. >Like any show - computers, cars, dogs, model trains, stamps, sex toys >- always far more social than stuff-oriented. >Sure, the "stuff" is important, but I would bet you could hold a very >good VCF with *nobody* bringing *any* machines. >Just make sure you get enough pizzas and beer. -- >Will ------------------- Of course many people go to this sort of thing for the social aspect and hang out on here for the same reason, but why are some people on here so deeply offended when someone like Tony says that he wouldn't care to spend time and money just to have some pizza and beer, especially considering the way he's been treated here by some of the folks he'd be eating and drinking with. Frankly, although I'm sure that most people on here are nice folks, there's only a handful with whom I think I'd have much in common and would spend time and money to hang out with and listen to if there weren't something else that interested me (especially since I don't drink beer or eat pizza). Having read some of these comments and especially the sentiment that unless you're a "celebrity" who cares what you have to contribute, I'm thinking the same as Tony, namely why am I wasting my time here? I've got friends who share my interests and there aren't any ignorant jerks like Evan among them nor do they tell me to fuck off; maybe it really is time to rent a dumpster and just toss in those Cromemcos, Vector Graphics, PETs, AIM65s and the 25-odd boxes of manuals and documentation that are taking up space just in case someone might want or need something one day; with a couple of exceptions they certainly aren't any use to me. Something to think about for sure; I may end up actually thanking Evan one day for finally showing me the light.

15 years, 6 months

42
183
0 0

Tektronix 4010 wiring color to numbers chart ??

by g-wright＠att.net

I have been working on a 4010 and the wiring color code is listed in numbers. Do they have a standard color to number chart ?? I have the manuals just cant find anything on this. As luck would have it. I removed a 2 wire connector from the power supply then noticed there is more that 1 set of matching in the area. - Thanks, Jerry

15 years, 6 months

3
3
0 0

For the SGI guys: Craigslist FS: (2) SGI Origin 200 + Vault

by kgcallahan＠gmail.com

Do you still have the sgi vault for sale?? If so do you have a model number? Thanks, Kevin -- My new email is kgcallahan at gmail.com

15 years, 6 months

1
0
0 0

Tektronix 4010/4014 terminal printer project

by tshoppa＠wmata.com

> Do you have a specification of the hard copy unit connector that we > are discussing? Between page 5-30 of the 4014 Service manual, 070-2303-00, and The description of the signals related, I bet we could figure It out. http://bitsavers.trailing-edge.com/pdf/tektronix/401x/070-2303-00_4014_4015… Tim.

15 years, 6 months

1
0
0 0

DEC BC13J-08 - what equipment was this used with?

by ethan.dicks＠gmail.com

Hi, All, I have a few DEC BC13J-08, new-in-bag, and not sure if I'd ever use any. I'm guessing there was some form of DEC Mux or terminal server that used RJ45s, but that gear would be out of the range of what I have worked with (I'm quite familiar with DZ11s, DMF32s, Emulex CS21s, etc) All the DEC-compatible modular serial gear I have is mid-1980s Nevada Western RJ11 stuff. I have more modern Cisco RJ45 serial stuff, naturally, but all I could find on the 'net about the DEC BC13J-08 was offers to sell (for about $15-$30 each!) Obviously I could open a bag and run the eight lines with a continuity checker, but it'd be nice to find some docs to save the time. Thanks for any insight as to what these were used with. -ethan

15 years, 6 months

3
2
0 0

Tektronix 4010/4014 terminal printer project

by tshoppa＠wmata.com

> In addition, while I could easily afford a modern printer to transplant > into the 4631 case, why should I when I have a perfectly good printer > already, plugged into my PC? > I'd prefer to take the raster image and save it in a suitable file > format (TIFF?) for putting on a PC and printing on any old printer. > This would make it much more flexible, and I think it would be of > benefit to do so. If a graphics file is the end format, it seems to me the easy way out Is to use a modern PC running Tek 4010/4014 emulation software (anything >From MS-Kermit to xterm) sniffing the serial traffic and just do screen dumps from there. For the vector purists (e.g. me) making SVG or Postscript or PDF or some True vector format, would be a desirable goal. But with endpoint resolution Only 1024x768 probably overkill. I still hate seeing what I know are True vector lines, get rasterized. Tim.

15 years, 6 months

12
30
0 0

Anyone want to buy my old Powerbook 190?

by lproven＠gmail.com

Or is it not vintage enough? :?) http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=270706084705 -- Liam Proven ? Info & profile: http://www.google.com/profiles/lproven Email: lproven at cix.co.uk ? GMail/GoogleTalk/Orkut: lproven at gmail.com Tel: +44 20-8685-0498 ? Cell: +44 7939-087884 ? Fax: + 44 870-9151419 AIM/Yahoo/Skype: liamproven ? MSN: lproven at hotmail.com ? ICQ: 73187508

15 years, 6 months

1
0
0 0

Faulty Apple Lisa 2/10 Drive -READINGS!

by terry＠webweavers.co.nz

> It could be the chip, certainly, I doubt it's the windings. IIRC the > widings are connected in a 'star' ('Wye') configuration to the 3 outputs, > see the HP drive schemcatics I pointed you to for details. If I cam > right, you could check the resistance between the 3 motor driver ouptus > (6,7,9) with the drive power remoced, they should all appaer to be > shorted to each other. Tony I've looked through past emails and can't seem to find those schematics. Can you point me to them again? The motor driver output pins are not QUITE shorted. There is about 25 ohms resistance showing which flickers between 20 and 30 as I turn the wheel? Normal? > However, it's also ppossibloe that one of the hall sensors has failed. > Theseare little 4 terminal parts that detelct the position of the motor > and cause the chip to drive the rigth coils. IIRC, they are connected to > pins 15,16,1,2,3,4[1] of the chip. With the motor supposed to be stopped, > connect a voltbeeter between grounf and each of those pins (if I have > rememebred them right, checkl the data sheet) in turn and slowly turn the > spidnle. You should see a samll change in voltage for each pin, it shoud > 'flick' up and down as you turn the spindle. If one or two are not doing > this, suspect the hall device. I've found them. On this TA7259P they are pins 1-4 and 13, 14. The voltages do show a variation as the spindle turns. But it's very small. About 0.03 volts and that variation is consistant over all 6 of them. The voltages differ. Pins 1 and 2 are 6.5, pins 3 and 4 are 4.3 and pins 13 and 14 are 8.4v > [1] Be careful with the pin mubmbering if you are working from one of my > HP drive scheramtics. I said the chip has 14 pins and 2 tabs. Toshiba say > th chip has 16 pins, including the tabs. So the pin numbers are > different. The chip I have has 14 pins. > I notce that one of the screews was badly corroded. Is there any damage > to the PCB tracks in that area? An open connection could account for your > problems. > The screw is rusty but the PCB tracks are actually in very good condition. There are no shorts. > One question for you. Where does the white wire from thr motor connector > go? Is it soldered to some point o nthe bototm of the PCB, if so, where? No not soldered to the board. The white wire joins the other wires from the two motor board connectors and goes into an 8-pin socket which plugs into the top of the bottom circuit board. The pins for this can be seen standing upright on the mid-bottom left on the board: http://www.classic-computers.org.nz/temp/lisa2-10-bottom-of-drive-circuit-b… The white wire goes to pin 8 which is the pin nearest the bottom (i.e south) of the picture. Well, what do you think Tony? I've found a place in HongKong I can get these TA 7259P ICs for $20 (incl shipping). The IC or the hall sensors? Are there any other tests I can do? I appreciate the detailed help you're giving me here. Terry

15 years, 6 months

2
6
0 0

TRS80 Model 1 Tutorials

by trash80＠internode.on.net

Posted by Ian Mavric a couple of days ago...they're quite good! http://www.youtube.com/watch?v=1XPcqwBZ2-4 http://www.youtube.com/watch?v=IOlVgfbpETQ ++++++++++ Kevin Parker Advanced Imaging e: webmaster at advancedimaging.com.au w: www.advancedimaging.com.au m: 0418 815 527 ++++++++++ http://au.linkedin.com/in/krparker

15 years, 6 months

1
0
0 0

AlphaServer 1000A

by indiviniti＠yahoo.com

DEC AlphaServer 1000A?pedestal server, in good shape, working state unknown, but likely does.? Alpha VMS or Tru64 UNIX CD's with apps likely available as well. Let me know asap if anyone is interested.? Ths is being cleared out of an old DEC logistics site early this week. ? Dale ____________________________________________________________________________________ Don't pick lemons. See all the new 2007 cars at Yahoo! Autos. http://autos.yahoo.com/new_cars.html

15 years, 6 months

1
0
0 0

ANN: DiscFerret Firmware 001C released

by classiccmp＠philpem.me.uk

This is aimed at all the folks who bought a DiscFerret with 001B firmware... and has been cross-posted to classiccmp because I know there are a few DiscFerret owners who don't follow the official mailing list. There's a fairly nasty bug in the USB stack on firmware version 001B. This bug causes the DiscFerret to stop responding under some conditions: - When the power cable is plugged in before the USB cable. - When the USB cable is unplugged, then reconnected while the DiscFerret is powered up. ("hot plugging") Basically, there's a logic error in the Microchip USB stack which causes it to enter an infinite loop whenever the PIC boots without the USB cable connected, or when the USB cable is disconnected mid-way through a USB packet. In the latter case, the USB PHY/SIE module in the PIC gets out of sync with the host, and fails to re-synchronise when the host is reconnected. The solution is to upgrade to Firmware 001C. This is available from <http://www.discferret.com/downloads/>. In simple terms: - Short the BOOT jumper on the DiscFerret - Connect the power supply and USB cable (in any order) - Remove the jumper - Run mphidflash to reprogram the PIC (the exact command line to use is on the Downloads page). The whole procedure can be done in a few minutes. If you've ever reflashed a PC BIOS, you'll have no trouble upgrading the firmware on a DiscFerret. Any problems -- feel free to email me, or post on Discferret-L. Thanks, -- Phil. classiccmp at philpem.me.uk http://www.philpem.me.uk/

15 years, 6 months

1
0
0 0

DiscFerret Microcode Update: V001F

by classiccmp＠philpem.me.uk

Hi guys, I've just spent an hour or so fixing more bugs in the DiscFerret microcode. Turns out the hard-sector track mark detector I was so pleased with... didn't actually work. What's that old saying about pride coming right before a fall? Anyway -- it's fixed now, along with a few other bugs. Basically, I screwed up the logic which generates the 250us and 500us master clocks, meaning the step rates were about 2x too fast. I'm surprised my drives managed to keep up at the rate the DiscFerret was stepping them (1.5ms a step for the 3.5in drive!) I've done some tests with a 10-sector NorthStar disc, and managed to get a valid read. Next up is adding NorthStar support to the disc analyser, but that's going to have to wait until next weekend... There's also a new feature in Mcode 001F -- index speed measurement. This is essentially a frequency counter tied to the INDEX pin. With this, you can measure the rotational speed of the disc -- which could be useful for testing disc drives, and adjusting the rotational speed of the spindle motor (on drives which have such adjustments). The new registers have been added to the current 'TIP' version of the C API, and the Python API (which still lives in the firmware repository, under the 'test' directory). As always, if you have any questions, ask away -- either on Classiccmp (cctalk or cctech), discferret-l, or the Vintage Computer Forums (though you may well have to PM me to get my attention!) Thanks, -- Phil. classiccmp at philpem.me.uk http://www.philpem.me.uk/

15 years, 6 months

1
1
0 0

Unique historical S-100 68000 CPU board items for sale

by lynchaj＠yahoo.com

Hi! Professor Wilcox is selling his historical S-100 68000 CPU board and associated material. Please contact him if interested. This is a unique set of boards and material. If I had the funds I would purchase these myself but cannot so hopefully someone in the classic/vintage/homebrew computer community would like these unique historical artifacts. Thanks and have a nice day! Andrew Lynch -----Original Message----- From: Alan D. Wilcox [mailto:alan at wilcoxengineering.com] Sent: Wednesday, February 09, 2011 7:28 PM To: Andrew Lynch Subject: Re: Andrew - trying to reach you - ADVTG Hi Andrew, You're a lot more familiar than I am as to what might appeal. Perhaps if you could please place a couple postings that might read something like the following, I might find a happy home for it all. "Unique 68000 S-100 CPU board and assorted other boards and engineering notes for sale. The board is the design feature of my 68000 book published in 1987. Photos and details at http://wilcoxengineering.com/68000-microprocessor - I can provide more specifics for serious inquiries only. Will not split; this special historical collection stays together. Contact me through the site. Alan Wilcox, W3DVX." Send me links of where I can see whatever you put up. Hopefully we'll have some serious folks calling. Many thanks! Alan :) Alan D. Wilcox, W3DVX 570-321-1516 http://WilcoxEngineering.com http://www.eham.net/reviews/detail/6768 ... Elecraft Client Comments http://www.eham.net/reviews/detail/8841 . Small Wonder Labs Comments http://eBookEditor.net https://www.smashwords.com/books/view/28062?ref=awilcox Williamsport, PA 17701

15 years, 6 months

1
0
0 0

Looking for Intel HEX read/write code

by rich.cini＠verizon.net

All -- I?m working on making a version of TinyBASIC available on the N8VEM 80188 board (like IBM ROM BASIC) and I?m looking for generic code to read and write Intel Hex records. The plan is to use this for the file format for storing BASIC programs on cassette. I?ve done some Googling and most of what I find is complete conversion programs rather than the code fragments that I need. If anyone has any useful links on this topic I?d appreciate it. Thanks! Rich -- Rich Cini Collector of Classic Computers Build Master and lead engineer, Altair32 Emulator http://www.altair32.com http://www.classiccmp.org/cini

15 years, 6 months

1
0
0 0

Sniping Does Not Require Justification!

by bob＠theadamsons.co.uk

Tony Duell wrote: >> >> That makes no sense. >> sniping does not drive up prices like early bidding does. >> > Of coursei it does. If I (early bid) $50 for an item with an opening bid > of $5, say, and somebody snipes me at the last minute with a $20 bid, > then the price I have to pay has been driven up. I think that's a bit contrived Tony - after all _any_ later bid would drive up the price you have to pay, this isn't a function of sniping. Bob

15 years, 6 months

4
3
0 0

Modern Business Machines for Writing, Duplicating, Recording, etc. (1947)

by legalize＠xmission.com

FYI, came across this film at archive.org today. <http://www.archive.org/details/modern_business_machines_for_writing> -- "The Direct3D Graphics Pipeline" -- DirectX 9 draft available for download <http://legalizeadulthood.wordpress.com/the-direct3d-graphics-pipeline/> Legalize Adulthood! <http://legalizeadulthood.wordpress.com>

15 years, 6 months

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