test-drb

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101090 discussions

by jules.richardson99＠gmail.com

I just bought an IDE-CF adapter the other day with the intention of replacing the spinning rust in my disk imaging system (which is some early/mid-90s 80486-based thing). However, the CF entry on Wikipedia says: "Most CompactFlash flash-memory devices limit wear on blocks by varying the physical location to which a block is written. When using CompactFlash in ATA mode to take the place of the hard disk drive, wear leveling becomes critical because low-numbered blocks contain tables whose contents change frequently. Current CompactFlash cards spread the wear-leveling across the entire drive. The more advanced CompactFlash cards will move data that rarely changes to ensure all blocks wear evenly." ... I'm a little wary about the way it says "most CF cards", implying that there are some out there which don't do any wear-leveling at all. So, the obvious question: is there a way of knowing which cards are going to be good and which are useless as IDE replacements? Maybe by age, capacity, manufacturer? I'd prefer not to invest time into setting software up only to find that the card fails in a matter of weeks. cheers Jules

8 years, 10 months

LINCtape/DECtape Head Alignment

by michael.99.thompson＠gmail.com

The RICM is working on the skew adjustment on a TU56 tape drive on a PDP-12. We only see a 5mV signal from the head, so when we flip the tape over we will only see 1mV. This is below the capabilities of my 'scope. The DEC skew adjustment procedure talks about using a DEC amplifier to boost the head signal to several volts. We are planning to make an equivalent amplifier using a modern Op-amp. It would be really convenient to have one of the Amphenol 133-022-03 connectors from a G851 Relay module on our amplifier so it would plug directly into the head cable. Does anyone have a DEC G851 module that we could remove the connector from? -- Michael Thompson

8 years, 11 months

User group magazine scans for an orphan computer model

by terry＠webweavers.co.nz

I've been scanning some user group newsletters. Reading them today reveals just how important they were for orphan machines home computers like the EACA Colour Genie. Even if you're not interested in that model, they are worth a look as they do reflect the "user club" scene of the day. I'm assuming New Zealand was much the same as anywhere else in this regard. Somewhat quaint, they reflect a bygone era. http://www.classic-computers.org.nz/blog/2017-03-18-eaca-colour-genie-auckl… Terry (Tez)

8 years, 11 months

FTGH Large amount of DEC/Misc Classic computer hardware

by COURYHOUSE＠aol.com

The New "CC Anonymous" Survey Form!! 20 QUESTIONS Assessment for Compulsive Hoarding & Cluttering 1. Are some living areas in your home cluttered? Y/N 2. Do you have trouble controlling urges to acquire things? Y/N 3. Does the clutter in your home prevent you from using some of your living space? Y/N 4. Do you have trouble controlling your urges to save things? Y/N 5. Do you have trouble walking through areas of your house because of clutter? Y/N 6. Do you have trouble throwing away or discarding things? Y/N 7. Do you experience distress throwing away or discarding possessions? Y/N 8. Do you feel distressed or uncomfortable when you can not acquire something you want? Y/N 9. Does the clutter in your home interfere with your social, work or everyday functioning? Y/N 10. Do you have strong urges to buy or acquire free things for which you have no immediate use? Y/N 11. Does the clutter in your home causes you distress? Y/N 12. Do you have strong urges to save things you know you may never use? Y/N 13. Do you feel upset/distressed about your acquiring habits? Y/N 14. Do you feel unable to control the clutter in your home? Y/N 15. Has compulsive buying resulted in financial difficulties? Y/N 16. Do you often avoid trying to discard possessions because it is too stressful or time consuming? Y/N 17. Do you often decide to keep things you do not need and have little space for? Y/N 18. Does the clutter in your home prevent you from inviting people to visit? Y/N 19. Do you often buy or acquire for free things for which you have no immediate use or need? Y/N 20. Do you often feel unable to discard a possession or possessions you would like to get rid of? Y/N Most hoarders will answer "yes" to at least 7 of these questions. In a message dated 3/18/2017 5:23:28 P.M. US Mountain Standard Time, cctalk at classiccmp.org writes: -------- Original message --------From: jim stephens via cctalk <cctalk at classiccmp.org> On 3/17/2017 9:01 PM, Peter C. Wallace via cctalk wrote: >>also significant pressure from SO to >> "get rid of that junk" >So far noone that matters has said anything >that dumb to me. It happens when your XYL gets the rank of Spousal Officer.

8 years, 11 months

FTGH Large amount of DEC/Misc Classic computer hardware

by barythrin＠gmail.com

-------- Original message --------From: jim stephens via cctalk <cctalk at classiccmp.org> On 3/17/2017 9:01 PM, Peter C. Wallace via cctalk wrote: >>also significant pressure from SO to >> "get rid of that junk" >So far noone that matters has said anything >that dumb to me. It happens when your XYL gets the rank of Spousal Officer.

8 years, 11 months

DEC items

by useddec＠gmail.com

Hi Peter, Sounds like a nice collection. Which PDP11s do you have? Thanks, Paul

8 years, 11 months

Unix type OS things

by sales＠elecplus.com

You guys want me to list these? Manuals, software, Tandy Xenix 6000 binder with 8" floppies and manual? Some old (but sealed IBM 8" floppies for I don't recall what (not blanks). Cindy Croxton

8 years, 11 months

AC magnetic field strengths

by aek＠bitsavers.org

I bought an AlphaLabs GM-2 Gaussmeter for another project, and measured the AC magnetic field strength touching these devices yesterday, since I really didn't have any idea beyond order of magnitude what they might be Handheld tape head demagnetizer: 40 Gauss GC Elec 9317 CRT degausing coil: 70 Gauss Audiolab TD-3 desktop bulk eraser: 1000 Gauss Inmac 7180 or RS 44-233A handheld bulk tape erasers: 2000 Gauss also the DC field of a 1/4" button super magnet like on the backs of clip on badges is about 3000 Gauss

8 years, 11 months

I hate the new mail system

by cclist＠sydex.com

On 02/28/2017 05:21 PM, Jon Auringer wrote: > > Chuck, > > I had the same display issue. Uncheck "Show only display name for > people in my address book" under Tools-Options-Display-Advanced. Jon, Thanks for the hint! I'm using the Linux version of Thunderbird, so the setting isn't under "Tools"; it took me a bit of searching to find it. In the *nix version, it appears to be under Edit->Preferences->Display. That seems to have fixed things. Thanks again, Chuck

8 years, 11 months

HP 9000/382 Questions

by w9gb＠icloud.com

Just threw out all of my HP/UX v9 training manuals from that era, last year. Reliable machine for the era when Intel 80386/80486 were the top processors. greg Sent from iPad Air

8 years, 11 months

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