test-drb February 2019

test-drb@ccmp.vtda.org

136 participants
165 discussions

by kylevowen＠gmail.com

Has anyone been successful in dumping the EPROM contents from an MC68701? As I understand it, this MCU requires executing a particular program from external memory to access the internal EPROM, both for programming and reading. I will write a utility to dump the contents if necessary, but I am happy to refrain from reinventing the wheel if a solution already exists. Thanks! Kyle

5 years, 10 months

8-Update

by pbirkel＠gmail.com

>I have an .slt for the PDP-8/e lever >Rod Please publish/share? paul

5 years, 10 months

Shock and vibration are legitimate diagnostic tools.

by technoid6502＠gmail.com

> > On Fri, 2019-02-15 at 12:00 -0600, cctalk-request at classiccmp.org wrote:> > as These hardware wizard stories remind me of a legendary repair wizard, > non-computer industrial devices I think. He was called in to fix a > tricky problem at the customer site. Studied it for a while, took > out a small hammer, whacked the device at some spot, and reported > "fixed". He then sent in a bill for $500 That has been my line any time I've needed to know if a machine had a 'flaky'. Sometimes, on the phone, ask a customer to give the machine a kick. They always balk, but I tell them "Shock and vibration are legitimate diagnostic tools", and that usually convinces them. In situations I suspect the problem is a flaky, it often results in a 'working' system and the customer says "oh wow! you Fixed it!". To which I say NO NO NO. It is not Fixed, only the problem is now revealed. I'll be over shortly to actually bolt down what needs bolting or otherwise make the machine immune to shock and vibration..... Best, Jeff

5 years, 10 months

Intel Universal Prom Programmer UPP 103 documentation

by andrewsofbg＠gmail.com

Hello, I need to do some work on my intel UPP-833 personality card in my UPP and am looking for documentation This document: 9800133F_Universal_PROM_Programmer_Reference_Manual_1977 has schematics for personality cards available in ?77 but does not include the UPP-833 I am having trouble with my UPP-833 and could use some documentation. Documentation on the UPP-832 would probably be helpful if nothing on the 833 There may be a newer version of 102448-001 I do not know about. There are two Documents that should have the information are: 102448-001. Printed Wiring Assembly UPP-833 Personality (drawings and schematics), L1002488, 123832, 2000966 123832-001. Printed Wiring Assembly UPP-833 Personality (drawings and schematics), L1002488, 123832, 2000966 Can anyone help? Regards Craig

5 years, 10 months

Fwd: Latest Batch of Items from Sellam's VWoCW

by ljw-cctech＠ljw.me.uk

Sorry, moderation fail. Forwarding to cctalk: -------- Forwarded Message -------- Subject: Latest Batch of Items from Sellam's VWoCW Date: Fri, 15 Feb 2019 20:27:12 -0800 From: Sellam Ismail via cctech <cctech at classiccmp.org> Reply-To: Sellam Ismail <sellam.ismail at gmail.com>, General Discussion: On-Topic Posts <cctech at classiccmp.org> To: General Discussion: On-Topic and Off-Topic Posts <cctalk at classiccmp.org> Hello Folks! I've put together another batch of items as I continue to wade through my warehouse and winnow out the wonders: HP 2116C System Manual #1 HP 2116C System Manual #2 HP 2116C System Manual #3 HP 2116C Power Cord Using the HP 3000: An Introduction to Interactive Programming Tandy WP-2 Portable Word Processor M7859 KY11-LB Console Interface Kraft 3-button PC Mouse Mouse Systems 3-button PC Mouse Zenith Z-Box External ISA Expansion Chassis Novell IBM NIC ShareNet Board Epson External 5.25" Floppy Drive SuperMac Technology DataFrame DF20 20MB external hard disk ClubMac C104 External SCSI CD-ROM Drive Midiman Mini MacMan Macintosh MIDI Interface Passport MIDI Interface for Macintosh Neutronics Hexadigit S-100 Bus Monitor Gimix Ghost 32K RAM Compaq SLT/286 portable VTech The Equalizer Laptop IBM Model M Keyboard IBM Model M Keyboard IBM Model M Keyboard IBM Model M Keyboard The main index for these and other fine items is here: https://docs.google.com/spreadsheets/d/1I53wxarLHlNmlPVf_HJ5oMKuab4zrApI_hi… I've put some work into the index and improved it so that links keep properly updated as new items are added or sold items are removed (whereas before the index links in the New Arrivals Niche would get hopelessly out of sync). However, I believe there might have been some problems with the links before so if you saw an item you liked and the link did not lead to it and you assumed it was sold, please check again. From this point going forward, all links (above the notice in the sheet) should stay in sync. I've been preoccupied for the last few months with personal business and haven't been able to put a lot of time into curating the collection for sales but I am trying to catch up. There are a couple people that are waiting on me and I haven't forgotten about you. I will get caught up shortly and I thank you for your patience. As always, please contact me directly by e-mail via <sellam.ismail at gmail.com> to make an order or an offer. Thanks! Sellam

5 years, 10 months

Zenith Z-90 startup

by andrewsofbg＠gmail.com

Hello, I am reading through message archives and came across your post. Did you get your h90 sorted out? Craig

5 years, 10 months

Intel PC-BUBBLE Card documentation?

by cmhanson＠eschatologist.net

Does anyone have documentation stashed away for the Intel PC-BUBBLE Card? The PC-BUBBLE is an 8-bit ISA card that Intel produced for prototyping bubble memory applications in the mid-1980s, the ROM on mine is v3.0 and says it?s copyright 1986. I don?t want to insert this into a system until I?m sure all the (many) jumpers are configured reasonably, and I?m sure that the empty 40-pin socket at U5 isn?t something that?s critical to its operation? -- Chris

5 years, 10 months

a timer for the PC - screen tme for the kids

by jfoust＠threedee.com

At 01:17 AM 2/15/2019, Randy Dawson via cctalk wrote: >What we have, is the screen time problem with the kids. If we are not there hounding and policing them, they will be on for hours. There are also consumer firewall/routers that have time-based limits. When I've had clients ask about this, or also ask for content filtering, it's such a difficult world these days. The kids don't have tablets or phones or iPods that do WiFi and can get the Internets from cellular connections or the neighbor's WiFi? Kids rapidly figure out solutions to bypass limits. High schools have WiFi, block social media, the kids install VPNs on their phones. - John

5 years, 10 months

a timer for the PC - screen tme for the kids

by rdawson16＠hotmail.com

Before I develop this, I thought it may already exist, and the classiccmp mail list might be the place to ask. What we have, is the screen time problem with the kids. If we are not there hounding and policing them, they will be on for hours. All the medical community says, we need to limit their screen time, as it contributes to their AD disorder and schoolwork, homework failures. My idea was initially do this in hardware, with a timer, and a solid state relay to gate the AC to the PC. On further thought, I should be able to do this in software, with a timer that lets the PC run for an hour, and then shuts the PC down until the next 24 hour cycle. (Installs itself on windows startup) Has anybody seen this, before I re-invent the wheel? Randy

5 years, 10 months

PDP-11/45 RSTS/E boot problem

by jnc＠mercury.lcs.mit.edu

> From: Paul Koning > Studied it for a while, took out a small hammer, whacked the device at > some spot, and reported "fixed". That reminds me of an amusing story from the first time I went to see 'Star Wars; I went with a group of people from Tech Sq. It has that scene where they're about to make the jump to hyperspace in the 'Falcon', and it won't go; so one of them (I think Solo) jumps up and whacks a particular spot on the bulkhead with his fist, and away she goes. We all found this terribly amusing, since one of the DEC time-sharing systems on the 9th floor had a sticky relay in the power controller, and when you'd try to power it on or off from the front panel, the relay would stick, and nothing would happen. So the procedure was to go around the back, open a particular door, reach in, and whack the power controller behind it in a particular spot with the side of your fist, and away it went! Noel

5 years, 10 months

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test-drb February 2019