test-drb March 2015

test-drb@ccmp.vtda.org

167 participants
224 discussions

by jnc＠mercury.lcs.mit.edu

Thanks to everyone who responded! I decided, after a look at the manuals, and on eBay, to go with the 23B/Unipak2B combo; it seems like it is likely to cover most things I want to do, and was available, something I could hook up to, etc, etc. A few points: > From: Jon Elson > You won't find ANYTHING that supports 1702 devices, they needed 80 V to > program. I checked, and the 29B/Unipak2B combo does not support them. Does anyone know if DEC used 1702s in anything PDP-11? Are there any other early PROMs I'm likely to run in PDP-11's that are also going to be difficult to deal with? > From: Roe Peterson >> What about the modern TL866? Anybody has experience with these? > They are fairly decent units, but can not handle 68764/68766 EPROMS, > which you might need for pdp11 systems. Well, I don't know about for PDP-11s, but the very first thing I'm going to do with it is blow EPROMs for a diagnostic ROM pack for my Tek 1240's, and those take 68764/68766's (or equivalent). So that one was out, for me. (BTW, what's the difference between the two? Looking at the data sheets very quickly, they seemed to be pretty much the same?) > From: Chuck Guzis > Do you need program the old 3-rail EPROMs? (e.g. 2704, 2708)? I have no idea what PROMs I will, over time, want to blow. I know of a couple of applications right off the bat (BDV11s, which I guess take a large range of things), and the afore-mentioned Tek 1240 ROM pack, but in the long run, I don't really know what I'll want to do with it. That's why I said I was looking for something that could do a wide range of early stuff. Noel

9 years, 9 months

Small DEC cardcage with backplane

by sander.reiche＠gmail.com

Hi all, I'm currently searching around for a small cardcage+backplane, if I'm not mistaken DEC part numbers H9281-BA or H9281-BB for a bigger one. The -BA (4x dual heights) has my preference as I'm looking to build a very nice, cute and not that power hungry PDP-11. Does anyone have one available? With kind regards, Sander Reiche the Netherlands

9 years, 9 months

AT&T 3b1/Unix PC Floppy controller help

by mikelee＠tdh.com

I'm working on one of these systems, and have run across a floppy controller issue. Everything else in the system is functioning fine, including booting from HDD. However, I have a problem where the floppy drive has power, physically works, and connected properly etc, but what I find is the drive/controller will recognize a disk is put in, click, then nothing. Just due to the way I'm working on this, I haven't been able to test any signals at the controller IC (WD2797), but I have completely swapped the IC with a different one just to check. Now, the question is, without looking at signals, what is the probability the lack of any action is could be a problem with the input to the IC (write, ready, track0, index, write protect, density signals) or with the output signals (step, direction, DRQ IRQ)? There are tri-state buffers (74LS244-input side, 74LS240-output side) on these signals, and I'm thinking one of these are misbehaving, but trying to determine which. Or could it be something completely different? Or any good suggestions on troubleshooting this?

9 years, 9 months

Radioshack documentation

by vlad.stamate＠gmail.com

Hi all, Now that RS is going down is there any effort to preserve the information that is on their website, which I assume will go down at some point (I could be wrong though)? Apologies if this has been discussed before. Things like this for example (pinouts, specs, drivers etc) http://support.radioshack.com/productinfo/DocumentResults.asp?sku_id=25-353… Regards, Vlad.

9 years, 9 months

A rather nice Atari Falcon but possible at an ambitious price...

by lproven＠gmail.com

http://www.ebay.ca/itm/Atari-Falcon-030-14-Mb-Super-Nice-Internal-External-… -- Liam Proven ? Profile: http://lproven.livejournal.com/profile Email: lproven at cix.co.uk ? GMail/G+/Twitter/Flickr/Facebook: lproven MSN: lproven at hotmail.com ? Skype/AIM/Yahoo/LinkedIn: liamproven Cell/Mobiles: +44 7939-087884 (UK) ? +420 702 829 053 (?R)

9 years, 9 months

VAX tests? (Mouse)

by johnwallace4＠yahoo.co.uk

[apologies for abuse of list protocol, bit pushed for time, crappy webmail client lazily replying to digest... usual excuses] In the absence of other suggestions so far: Brief background: Real VAXes had real diagnostics. MicroVAXes had diagnostics in ROM, or if that wasn't sufficient, the MicroVAX Diagnostic Monitor was available. Readers of the list may know where to get hold of a copy of the MDM; a quick search doesn't find an obvious source. Moving on: Are you aware of EK-O19AE-SG-005_MicroVAX_Troubleshooting_and_Diagnostics_May89.pdf or similar? Bitsavers is where I found it, e.g. http://bitsavers.trailing-edge.com/pdf/dec/vax/3800/EK-O19AE-SG-005_MicroVA… Does your emulator have a console ROM like the real thing? Does it have any tests in it? The KA630 ROM diags are covered briefly in Chapter 5 of the KA630 Users Guide, e.g. at http://www.vaxination.ca/vms/microvax/EK-KA630-UG-001_FEB86.PDF A VAX is a VAX, to a large extent, so generic diagnostics (not CPU-specific) might be helpful in some cases. The detailed innards of memory management may not be one of those cases, though there are likely some CPU-independent parts too. Have a read of the manual(s) above if you haven't done so already, see if you can get hold of a downloadable MDM image, report back? Best of luck.

9 years, 9 months

Looking for HP UX for an HP 9000/712

by slandon110＠gmail.com

Hey all, Im looking for HP UX for my HP 9000/712 Anybody got a source, I cannot find anything and I am trying to get it back to its original glory Thanks Steve

9 years, 9 months

New Maryland BBS :P

by mokuba＠gmail.com

After some downtime recently due to a hard drive failure, I've received a new ESDI drive! 30mb this time, but from a good source. Should be up again later tonight! On Sun, Feb 8, 2015 at 3:47 AM, Gary Sparkes <mokuba at gmail.com> wrote: > +1-410-734-6804 best bbs in the world > > .... mainly 'cuz it's in my bedroom. > > I even have a legitimate Wildcat! 4 license! >_> > > Hosted on an IBM PS/2 Model 70 with 8MB ram and a 130MB ESDI HDD. > Blue Lightning version, too, so it's a blazing fast 486 instead of the > normal 386 model. > > -- > Gary G. Sparkes Jr. > KB3HAG > -- Gary G. Sparkes Jr. KB3HAG

9 years, 9 months

DESQA Manual?

by robert.jarratt＠ntlworld.com

I picked up a DESQA recently which seems to be configured for thinwire rather than AUI. There is no external switch for it and I can't find a manual to tell me how to swap it to AUI. Does anyone have a scan of the manual? BitSavers doesn't have it, and the Manx link is broken and is probably only for the ToC. Regards Rob

9 years, 9 months

DEC manuals: interest to scan it?

by shadoooo＠gmail.com

Hello, I have the following manuals, I could scan them if not already available somewhere. Al, please could you check if you have all of them on bitsavers, or if you need some parts to be rescanned? FORTRAN 77 AD-L979A-T1 F77 LANGUAGE REFERENCE MANUAL AD-1884D-T1 F77 USER GUIDE AD-1874C-T1 F77 OBJECT TIME SYSTEM REFERENCE MANUAL AA-JQ94A-TK F77 DOCUMENTATION SUPPLEMENT PDP11 FORTRAN AA-1855D-TC FORTRAN LANGUAGE REFERENCE MANUAL AA-1936F-TC FORTRAN USER GUIDE RSX-11M AE-H653B-TK SOFTWARE PRODUCT DESCRIPTION AA-2593M-TC INFORMATION DIRECTORY AND MASTER INDEX AA-2573I-TC RELEASE NOTES AA-W259F-TC UPDATE NOTES REV A AA-L763B-TC INTRODUCTION TO RSX-11M AI-Y508B-TE GUIDE TO VAX/VMS FILE APPLICATIONS AA-D035D-TE FORTRAN USER GUIDE AA-H953E-TE FORTRAN INSTALLATION GUIDE / RELEASE NOTES AA-KN06A-TE VAX/VMS RELEASE NOTES V4.6 AA-R429A-TE VAX11 DECGRAPH USER GUIDE AA-1749E-TC PDP11 COBOL AA-L672C-TC RSX-11M COMMAND LANGUAGE MANUAL AA-L671A-TC RSX-11M BATCH AND QUEUE OPERATIONS MANUAL AA-FD05A-TC INDIRECT COMMAND PROCEDURE MANUAL VT240 PROGRAMMER REFERENCE MANUAL VOLUME 1 AA-H625C-TC RSX-11M SYSTEM GENERATION AND INSTALLATION GUIDE AA-JK92A-TE INTRODUCTION TO DATABASE DEVELOPMENT AA-93A-TE INTRODUCTION TO APPLICATION DEVELOPMENT AA-Y501A-TE GUIDE TO USING DCL AND COMMAND PROCEDURES ON VAX/VMS AI-Y516A-TE VAX/VMS MINI REFERENCE AA-FB84A-TE GUIDE TO CREATING MODULAR PROCEDURES ON VAX/VMS Andrea

9 years, 9 months

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test-drb March 2015