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

FS PDP11/34

by stephane.tsacas＠gmail.com

http://newyork.craigslist.org/lgi/sys/5206082834.html -- Stephane

10 years, 9 months

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Cleaning out library, part 2

by menadeau＠comcast.net

Awhile ago, I offered some books for free to list members. Now I've got another list of books and other items I want to get rid of. Again, they are free to list members. All I ask it to pay shipping fees--most of this can be sent by media mail. First-come, first-serve. Happy to answer any questions about these items. BOOKS Analog Devices Analog-Digital Conversion Handbook (1972) Artificial Reality (Krueger, Addison-Wesley, 1983 Basic Microprocessors and the 6800 (Bishop/Motorola, Hayden Press, 1979) Complexification: Explaining a paradoxical world through the science of surprise (Casti, Harper Collins, 1994) Computer Selections: Reading in Data Processing and Computer Science (Benice, McGraw-Hill, 1971) Cyberstates 2001: A State-by-State Overview of the High Technology Industry (NASDAQ and American Electronics Association) Essential PC-DOS Second Edition (Shaw & Shaw, Sybex, 1985) Externally Defined Body Parts (Body Part 15) Issues and Recommendations: A White Paper Prepared for the PRMD Operators Committee of the Electronic Mail Association (Banan, EMA, 1993) Future Codes: Essays in Advanced Computer Technology and the Law (Karnow, Artech House,1994) Guidelines for Evaluating Computerized Instructional Materials (National Council of Teachers of Mathematics, 1981 High-Tech Espionage: How the KGB Smuggles NATO?s Strategic Secrets to Moscow (Tuck, St. Martins, 1986) Hyper-G Now Hyperwave the Next Generation Web SOlution (Maurer, Addison-Wesley, 1996) In Our Own Image: Building an Artificial Person (Caudill, Oxford Press, 1992) Machine Beauty: Elegance and the Heart of COmputing (Gelernter, Harper Collins,1997) This is an uncorrected proof copy Mastering Windows 98 (Cowart, Sybex, 1998) Microman: Computers and the Evolution of Consciousness ( Pask, MacMillan, 1982) Mind Tools: THe Five Levels of Mathematical Reality (Rucker, Houghton Mifflin, 1987) NetResults: Integrating the Internet into Your Business, Fall Workshop Proceedings, MIT Enterprise Forum, 1997 Philips New Media Systems New Developments in Optical Media paper, 1990s Philips New Media Systems Philips in the Age of Optical Disc Media paper, 1990s Picture Perfect: Color Output for Computer Graphics (Tektronix, 1991) Science Technology and the First Amendment Special Report (US Congress Office of Technology Assessment, 1988) Solid State Circuit Guidebook (Ward, Tab Books, 1974) Tandy Corporation: Start on a Shoestring (West, 1968) Teach Yourself the Internet and WOrld Wide Web Visually (maranGraphics, IDG Books, 1997) The Fifth Generation: Artificial Intelligence and Japan?s Computer Challenge to the World, Fiegenbaum & McCorduck, Addison-Wesley, 1983) The Future Does Not Compute: Transcending the Machines in Our Midst (Talbott, O?Reilly, 1995) THe Playful World: How Technology is Transforming Our Imagination (Pesce, Ballantine Books, 2000) The Second Self: Computers and the Human Spirit (Turkle, Simon & Schuster, 1984) Using Supercalc 5 2nd Edition (Lateer, Que, 1989) Using Wordperfect 3rd Edition (Beacham & Beacham, Que, 1987) MANUALS Lotus 1-2-3 Release 2.2 Reference Transistor Manual, Light-Weight Edition (GE, 1969) Voltage Regulator Handbook (National Semiconductor, 1975) Westinghouse Series 100 Programmable Solid State Control Users Guide 1975 MISC. 80 Micro 1980-1981-1982 Permuted Index Argonne National Laboratory Zero Gradient Synchotron folder. Contents are Argonne HR material, not about the Synchotron. Cybertown online community presentation in folder with floppy of images, 1990s. Instant Software 3-ring binder, plastic, empty Jade Computer newsprint catalog winter 1988 POSTERS Arche Technologies computer line, large format Borland Turbo Lightning, unused Borland Word Wizard, unused SOFTWARE Battery Disk 2.07. Untested 5.25? floppy, for PC Qmodem, 1990s, 5.25? floppy and manual still in shrink wrap, for PC

10 years, 9 months

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PDP-8 diagnostics SR settings?

by charlesmorris800＠centurytel.net

I got lucky with a little trial & error. Setting the MSB of the SR (i.e. 7000) causes AJRLIA to report an error but then keep testing. Not sure if this works for all the AJ**** diagnostics but hopefully DEC had some kind of pseudo-standard for this...

10 years, 9 months

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PDP-8 diagnostics SR settings?

by charlesmorris800＠centurytel.net

Does anyone know what the switch register settings are for the PDP-8 disk diagnostics (found on diagpack2.rk05 and others)? In particular, the AJRL** series (RL01/02 drive exercisers). Normally the SR is set to 0000 but when there's an error the program stops until a CR is typed. I want the diagnostic to just print out that error and keep running. Trial and error might take a long time. Without the source code there's no other good way except possibly to single-step through the program and look for the OSR command (which may also take a very long time). thanks for any help. -Charles

10 years, 9 months

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PDP-12 Restoration at the RICM

by michael.99.thompson＠gmail.com

The Maintenance Manual-II describes the procedures for checking and adjusting the TC12 timing. It needs a lot more notes about using the Auto Restart speed settings. This facility allows you to put the processor in Single Step and have the Continue button automatically pressed ad a controllable rate. If the rate is set too high you will see the LTD ACIP Delay activate twice and measure a delay that is more than twice real value. Most of the delays are controlled by M307 One Shot flip-chips. These boards have Fairchild 9601 ICs in them. We didn't have any spares, so we bought some on eBay just in case... The TC12 has extensive maintenance capabilities and will let the processor simulate just about any condition in the TC12. With a short toggle-in program we were able to check all of the basic timing signals LTT TP0 L, LTT TP2 L, LTT TP3 L, and LTT TP4 L signals. We adjusted LTD XTLK H from 9.15 us to 9.5 us according to the written notes in the maintenance manual, where the spec was 9 us. We adjusted LTD TTOK, LTD TAPE FAIL Delay, LTD ACIP Delay, and the Mark Clock. Unfortunately none of these adjustments made any difference, and the LINCtapes still misbehave. -- Michael Thompson

10 years, 9 months

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Schematics KDJ11-A / M8192?

by jnc＠mercury.lcs.mit.edu

> From: Holm Tiffe > does someone know if the schematics of the KDJ11-A (11/73 CPU) are > available in the public? Not reading the list much, are we? :-) Noel

10 years, 9 months

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Electronic devices and borders

by jnc＠mercury.lcs.mit.edu

> From: Mike Ross > Strong crypto on everything! Better yet (much better): upload all your bits to the cloud (strongly encrypted if need be), and have almost none on the machine when you cross the border - you can download it when you get to the other side. (And, if you're paranoid, or have reason to be, don't forget to i) delete it before coming back across, and ii) wipe your free space.) Anything _on_ the machine they are entitled to look at - and if you have A bunch of encrypted stuff, and won't give them the keys, it makes them i) suspicious, and ii) pissed off at you for flouting their 'authority'. 'Sure, officer - look at anything you want, nothing's locked' - they'll soon lose interest and wave you on their way, there's obviously nothing there to find. Noel

10 years, 9 months

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no, not retrobrite

by jwest＠classiccmp.org

Decided to start with the terminals first. I cleaned up and tested the DG Dasher D200, and it come out fairly good and all tests indicate it's working fine. No pictures of that. The Dasher TP1 is much more of a hard-luck case, and I just finished cleaning the top of the top chassis. I did not clean the bottom chassis or stand or insides yet, so you can see a good comparison of the cleaned top half and the untouched bottom half. 7 pictures (unfortunately newest to oldest) are at https://www.flickr.com/photos/131070638 at N02 No, there's no retrobrite involved. Just a normal spray on household cleaner, followed by Magic Eraser and a lot of elbow grease. Yep, Magic Eraser is a wonderful thing. J

10 years, 9 months

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Cameras- way off topic...

by useddec＠gmail.com

I have a friend with a Contax RTSII and accessories for sale if there are any other Zeiss people out there. More info on request. The following list is from another person trying to settle an estate. Over 175 cameras! The prices are from collectiblend.com. I've never heard of it but and he knows he won't be able to get those prices, with the possible exception of the Leica gear. As I recall, there are a few Leica collectors here. BTW, I have some old Leica microscopes and specialty items I might get rid of circa 1910 and newer. I'm a Zeiss person myself. Some cameras are NIB, some have a lot of options. I plan on picking up a few pieces for myself. There is a lot of darkroom equipment, but no list yet. If you have any interest feel free to contact me off list. Thanks, Paul # BRAND MODEL MISC. $ $ 1 AGFA AGFA ANSCO $10 $20 2 AGFA ANSCO Clipper PD16 Box $30 $40 3 AGFA ANSCO Plenax Case $10 $20 4 AGFA ANSCO Viking $50 $60 5 AGFA Billy Record I ("Viking") $20 $30 6 AGFA ISO Flash Rapid C Box, manual $10 $20 7 AGFA Isolette (Pre-War) Case $90 $100 8 AGFA Ventura 69 $20 $30 9 AGFA ANSCO PB 20 Viking Case $20 $30 10 AGFA ANSCO PD16 Readyset Case, manual [MINT] $50 $60 11 ALFRED GAUTHEIR Prontor II $40 $50 12 ALFRED GAUTHEIR Vario $10 $20 13 ALFRED GAUTHIER AGC Pronto $10 $20 14 ANSCI Speedex B2 Junior $10 $20 15 ANSCO Deluxe No. 1 $40 $50 16 ANSCO Folding ANSCO No. 1 $10 $20 17 ANSCO Readyset Royal No. 1 A Brown Case, Manual $40 $50 18 ANSCO Readyset Special No. 1 A $20 $30 19 ANSCO Regent $50 $60 20 ANSCO Speedex 6.3 $10 $20 21 ANSCO Standard Speedex $10 $20 22 ANSCO Viking Readiset Box, manual $25 $35 23 ANTHONY Novelette (ca. 1886) Missing lense $300 $350 24 ARGUS "A" - Candid Camera Box, manual $40 $50 25 ARGUS "A" (Black) $20 $30 26 ARGUS "A" (Black) Flash, arm & cable $25 $35 27 ARGUS Argoflex 75 Case, box, manuals $20 $30 28 ARGUS Argus (Argoflex) 40 Case $25 $35 29 ARGUS Argus C 2 Case $30 $40 30 ARGUS Argus C Black Case $60 $70 31 ARGUS Argus C Black $60 $70 32 ARGUS Argus C44 $100 $120 33 BALDA Baldina 1935 $50 $60 34 BALDA Baldina 1935 $50 $60 35 BALDA Juwella $90 $100 36 BOLSEY B 2 Case $100 $120 37 BRAUN Gloriette $10 $20 38 BURKE & JAMES Rexo 3 Junior $50 $60 39 CIRO Ciro-flex "C" Case $100 $120 40 EHO Altiflex Case $100 $120 41 FALCON Model X6 $5 $10 42 FOTH C.F. Derby I $280 $300 43 FOTOCHROME Fotochrome $90 $100 44 FRANKA WERKA Rolfix (1951) Case $30 $40 45 GOLAR Feca $40 $50 46 GRAFLEX Century 35 A $50 $60 47 GRAFLEX Speed Graphic Wood box, plates, manual $750 $800 48 GRAFLEX Stereo Graphic $200 $220 49 HAKING Mincronta 35X $20 $30 50 HERBERT GEORGE HERCO Imperial 620 Snap Shot $10 $20 51 HERBERT GEORGE Imperial 620 Reflex Boy Scouts of America, flash $45 $50 52 HERBERT GEORGE Imperial Debonair $10 $20 53 HIT Minature $30 $40 54 HOUGHTON Ensign (Regular Ensign) $70 $80 55 ICA Icarette (6 x 6) Model "A" $70 $80 56 ICA Lloyd (535/575) $70 $80 57 ILOCA Realist 35 $20 $30 58 JHAGEE Exa Type 1.2 $100 $120 59 KEYSTONE K 25 Capri $10 $20 60 KODAK 35 Half case $60 $70 61 KODAK Autographic Junior No. 1 $30 $40 62 KODAK Autographic Junior No. 1 A $30 $40 63 KODAK Autographic Junior No. 1 A $30 $40 64 KODAK Autographic No. 3 Case $50 $60 65 KODAK Autographic No. 3 A Model C $50 $60 66 KODAK Automatic 35 Half case $50 $60 67 KODAK Baby Brownie $30 $40 68 KODAK Baby Brownie $30 $40 69 KODAK Baby Brownie $30 $40 70 KODAK Bantam f 4.5 $40 $50 71 KODAK Brownie Hawkeye $10 $20 72 KODAK Brownie Movie Camera Model 2 Box, manual $60 $70 73 KODAK Brownie Reflex Synchro $20 $30 74 KODAK Brownie Reflex Synchro Box, manual $50 $60 75 KODAK Brownie Starmatic Case $10 $20 76 KODAK Brownie Target Six-20 (US) $20 $30 77 KODAK Bullet $90 $100 78 KODAK Bullet Box $90 $100 79 KODAK Cartridge Hawk-Eye No. 2 Model C $10 $20 80 KODAK Duaflex II $50 $60 81 KODAK Flash Bantam Case $30 $40 82 KODAK Folding 127-A $10 $20 83 KODAK Folding Autographic Brownie No. 2 $10 $20 84 KODAK Folding Autographic Brownie No. 2 $10 $20 85 KODAK Folding Autographic Brownie No. 2 $10 $20 86 KODAK Folding Autographic Brownie No. 2 C $10 $20 87 KODAK Folding Brownie No. 2A (Black) Box, manual $90 $100 88 KODAK Folding Brownie No. 2A (Brown) Box $70 $80 89 KODAK Folding Brownie No. 3 A Red bellows $50 $60 90 KODAK Folding Cartridge Hawk-Eye No. 2 Model C $50 $60 91 KODAK Folding Cartridge Premo No. 2 $40 $50 92 KODAK Folding Hawk-Eye No. 2 Model B Case $50 $60 93 KODAK Folding Pocket No. 2 Model C Rare Model $90 $100 94 KODAK Folding Pocket No. 3 A $50 $60 95 KODAK Folding Pocket No. 3 Model E2 $100 $120 96 KODAK Folding Pocket No. 3A Model B4 $70 $80 97 KODAK Jiffy Kodak Six-16 $40 $50 98 KODAK Jiffy Kodak Six-20 Manual $30 $40 99 KODAK Junior No. 1 Case, manual $30 $40 101 KODAK Junior No. 2 C $10 $20 102 KODAK Junior Six-16 Series III Case, manual [MINT] $50 $60 103 KODAK Pocket Junior No. 1 $30 $40 104 KODAK Pocket No. 1 $40 $50 105 KODAK Pocket No. 1 A $50 $60 106 KODAK Pocket No. 1 A $50 $60 107 KODAK Pocket No. 1 Series II $20 $30 108 KODAK Premo $60 $70 109 KODAK Premoette Junior No. 1 $50 $60 110 KODAK Retina I (117) Case $340 $360 111 KODAK Retina Ia Case $70 $80 112 KODAK Retina IIIc (021 III) $220 $240 113 KODAK Signet 35 $100 $120 114 KODAK Stereo 35 (black) Case, box, manual $480 $500 115 KODAK Tourist (Anastar) $180 $200 116 KODAK Tourist (Anastar) Mint condition $180 $200 117 KODAK Tourist (Anastar) Mint condition $180 $200 118 KODAK Tourist (Anaston) Case $60 $70 119 KODAK Vest Pocket Autographic $50 $60 120 KODAK Vest Pocket Autographic Special $50 $60 121 KODAK Vest Pocket Model B $120 $140 122 KODAK Vest Pocket Model B Box [MINT] $180 $200 123 KODAK Vigilant Junior Six-20 $30 $40 124 KODAK Vigilant Junior Six-20 $30 $40 125 KODAK Vigilant Junior Six-20 $30 $40 126 KODAK Vigilant Six-20 Box $40 $50 127 KODAK Vigilant Six-20 Box $40 $50 128 KODAK Vigilant Six-20 Box $40 $50 129 KODAK Vigilant Six-20 $40 $50 130 KODAK Vollenda No. 48 $70 $80 131 LAVEC LT-002 Box, case, manual $10 $20 132 MINETTA Minature $20 $30 133 MINOLTA Freedom 50 N $10 $20 134 MINOLTA Hi-Matic F Case $30 $40 135 MINOLTA Minolta 16 Chrome $50 $60 136 MINOLTA Minolta 35 Model E $320 $340 137 OLYMPUS Olympus XA-2 Box, manual [MINT] $90 $100 138 PHO-TAK Foldex 20 Case $60 $70 139 POLAROID 101 (Automatic) Flash, Manual $30 $40 140 POLAROID Colorpack II Box, manual $10 $20 141 POLAROID Polaroid 80 (Highlander) $10 $20 142 RICOH Ricohflex Model IV Case $160 $180 143 SENECA Competitor View (1904 - 1925) Tripod, extra plates $600 $650 144 SENECA R. F. Seneca No. 3A $60 $70 145 SENECA R. F. Seneca No. 3A Case $60 $70 146 SENECA Scout Folding No. 2 A $90 $100 147 SENECA Scout Folding No. 3 A $90 $100 148 SPARTUS Spartus Rocket $20 $30 149 SUYDAM Roll film adaptor $50 $60 150 TRAID CORP. Fotron III Mint condition $200 $220 151 UNIVERSAL CAMERA Univex A Box $50 $60 152 UNIVERSAL CAMERA Univex Iris $40 $50 153 UNIVEX Model AF-3 $30 $4 154 UTILITY MFG. Falcon Minature $50 $60 155 VOIGTLANDER Bessa Case $160 $180 156 VOIGTLANDER Bessa Case $160 $180 157 VOIGTLANDER Bessa Compur 4.5 $20 $25 158 VOIGTLANDER Vito $90 $100 159 VOIGTLANDER Vito Automatic I Case $60 $70 160 WELTA Perfekta Half case $160 $180 161 WELTA Watson $70 $80 162 WELTA Weltax I $50 $60 163 WELTA Welti $100 $120 164 WELTA Welti $60 $70 165 WHITEHOUSE Beacon II $20 $30 166 WHITEHOUSE Beacon II $20 $30 167 YASHICA EZ-Matic $50 $60 168 YASHICA MAT 124 G Case, manual, bag $320 $340 169 YASHICA Yashica A Case $100 $120 170 YASHICA Yashica D $140 $160 171 ZEISS IKON Ikonta 35 $220 $240 172 ZEISS IKON Ikonta 35 (522/24) $220 $240 173 ZEISS IKON Ikonta 520 / 18 $120 $140 174 ZEISS IKON Ikonta D 520/15 $90 $100 175 ZEISS IKON Nettar 510 Case $70 $80 176 ZENOBIA D.O.C. Rapid $30 $40 TOTALS: $12,785 $14,914 LEITZ Leica IIf (red dial) [1951-52] Case $1,000 $1,100 LEITZ Leica IIIf (upgraded) [1952-53] Case $900 $1,000 LEITZ Leica IIIf [1951-52] Half-case $900 $1,000 LEITZ Leica M3 Chrome Double Stroke [1955] $2,400 $2,500 LEITZ Lens: Elmar 90mm f4 (SM, chrome) Mfg. 1955 $180 $200 LEITZ Lens: Elmar 50mm f3.5 (SM, chrome) Mfg. 1954 $520 $540

10 years, 9 months

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Schematics KDJ11-A / M8192?

by holm＠freibergnet.de

Hi, does someone know if the schematics of the KDJ11-A (11/73 CPU) are available in the public? I have one with an thermal fault, the J11 is fine.. Regards, Holm -- Technik Service u. Handel Tiffe, www.tsht.de, Holm Tiffe, Freiberger Stra?e 42, 09600 Obersch?na, USt-Id: DE253710583 www.tsht.de, info at tsht.de, Fax +49 3731 74200, Mobil: 0172 8790 741

10 years, 9 months

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seeking Burroughs B6700 manuals and software

by COURYHOUSE＠aol.com

one thing we have fine from the 5000 stuff are all these beautiful cord wood logic things all gold and pretty but most of these got scrapped for gold along the way.. I do not know what other units used in but some folks mentioned 5000 I have schematics for some of these too. ed# www,smecc.org In a message dated 9/4/2015 11:23:16 P.M. Mountain Standard Time, nw at retroComputingTasmania.com writes: We would be glad to hear from anyone who might have new material related to the Burroughs B6700. We're on the hunt for any manuals or software related to the Burroughs large systems so we can build an emulator for the B6700. This search includes the B5000, B6000, B7000 families, since there is considerable overlap across these families and collateral from one system family can assist understanding another. Example models include B5500, B5700, B6500, B7500, B6700, B7700, B6800, and B7800. We were amazingly lucky with the B5500 to have so much of the critical documentation (thanks Bitsavers!) and a complete suite of system software, but even though the B6700 was more recent and produced in larger numbers we're not having the same level of good fortune finding artifacts. What we have so far is documented here: https://docs.google.com/spreadsheets/d/1JnMsyE8ssJi_-MUsK0rT9LPtNpeJCpTv1QrF w-917Y8/edit?usp=sharing If you're interested in this system then you likely remember that it had a particularly impressive front-panel display, seen here: http://www.retrocomputingtasmania.com/home/projects/burroughs-b6700-mainfram e#TOC-B6700-Display-Panel This was known as the MDL display: Maintenance Diagnostics Logic display. Because the MDL had the 4 x top-of-stack registers down to the bit-level particular bit-patterns allowed words to be displayed. The early MCPs put IDLE into the display during IO waits, and subsequent releases: B for Burroughs, but sites quickly started putting their own company initials or the time. The Danish museum is so far the only place I've found that kept the MDL: http://datamuseum.dk/wiki/Genstand:11000045_Konsolpanel_Burroughs_B6700 Thanks to Finn Verner Nielsen for being so helpful and undertaking an expedition into their warehouse to locate and photograph the item for us. On that DDHF web-page you will see on the left of the picture the B7800 MDL they have too. My goal is to also construct a replica of the B6700 MDL. Steps undertaken so far: Posts to newsgroups Posts on LinkedIn, wikipedia, Yahoo groups Emails to a few dozen people who were involved with the system Trawling the Internet

10 years, 9 months

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seeking Burroughs B6700 manuals and software

by COURYHOUSE＠aol.com

I will have to see. When we acquired the Aldrige collection at SMECC we pulled off all the really really early material and put the remainder in storage which should have some of this... we also have the unisys crossover stuff and when why bought up the Varian minicomputer too. I remember we boxed and boxed... and deep stored it. guess it did not seem "really old" at the time....but it has been about 10 years since we have pulled it out and run our hand through it. Background on Aldrige started on the electrodata Pasadena ... ended up running the phx field service effort here and was a great packrat. The effort to get to this material is a lot of work ed sharpe _www.smecc.org_ (http://www.smecc.org) In a message dated 9/4/2015 11:23:16 P.M. Mountain Standard Time, nw at retroComputingTasmania.com writes: We would be glad to hear from anyone who might have new material related to the Burroughs B6700. We're on the hunt for any manuals or software related to the Burroughs large systems so we can build an emulator for the B6700. This search includes the B5000, B6000, B7000 families, since there is considerable overlap across these families and collateral from one system family can assist understanding another. Example models include B5500, B5700, B6500, B7500, B6700, B7700, B6800, and B7800. We were amazingly lucky with the B5500 to have so much of the critical documentation (thanks Bitsavers!) and a complete suite of system software, but even though the B6700 was more recent and produced in larger numbers we're not having the same level of good fortune finding artifacts. What we have so far is documented here: https://docs.google.com/spreadsheets/d/1JnMsyE8ssJi_-MUsK0rT9LPtNpeJCpTv1QrF w-917Y8/edit?usp=sharing If you're interested in this system then you likely remember that it had a particularly impressive front-panel display, seen here: http://www.retrocomputingtasmania.com/home/projects/burroughs-b6700-mainfram e#TOC-B6700-Display-Panel This was known as the MDL display: Maintenance Diagnostics Logic display. Because the MDL had the 4 x top-of-stack registers down to the bit-level particular bit-patterns allowed words to be displayed. The early MCPs put IDLE into the display during IO waits, and subsequent releases: B for Burroughs, but sites quickly started putting their own company initials or the time. The Danish museum is so far the only place I've found that kept the MDL: http://datamuseum.dk/wiki/Genstand:11000045_Konsolpanel_Burroughs_B6700 Thanks to Finn Verner Nielsen for being so helpful and undertaking an expedition into their warehouse to locate and photograph the item for us. On that DDHF web-page you will see on the left of the picture the B7800 MDL they have too. My goal is to also construct a replica of the B6700 MDL. Steps undertaken so far: Posts to newsgroups Posts on LinkedIn, wikipedia, Yahoo groups Emails to a few dozen people who were involved with the system Trawling the Internet

10 years, 9 months

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Ongoing debug of RL8A controller

by charlesmorris800＠centurytel.net

I reconnected the data bus pins, and disconnected all the MA0..11 pins (in case it's DMAing into memory when it should not be). Nope, same issue. Won't boot Serial Disk, corrupts the upper six bits of the loader. Only bus left is the memory data MD0..11, but that can't be shorted because on the card it has only inputs. Also the IOT address is decoded from it and those select properly. Still thinking it's DMA, will try watching the break request and other DMA lines for activity. Nothing unexpected there. But at last I found something... I think. Despite it not making sense, I disconnected the top 8 bits of MD0..7 (thus not only disconnecting the bus receivers on the card, but also completely deselecting it). Now the system booted and runs normally with the card plugged in! So, I figured either one of the 8640 receivers at E3, E20 (page 5 of the 10-page schematic) is leaky, quite possibly E20 which handles bits 4-7 the "troublemakers" from before, or the 8136 at E11 which appears to be just a multi-input AND/OR gate combo to select IOT x60x/x61x and was working with scope loop. I gradually reconnected lines until it started failing to boot and wiping out the loader again... I am so tired of toggling that loader in! At least it's only 26 (octal) words. Turns out MD4 was being pulled down weakly (to a volt or two) by something when it should have been pulled up. Wiggling and flexing the card caused it to work, intermittently. But I could not find it even with close visual inspection. I suspected a tiny tin whisker somewhere... So I crossed my fingers and tapped the pin with a cliplead from the 25 amp +5 volt supply. Figured I had nothing to lose at this point! ... and apparently did clear the short :) Now that line looked normal just like the other 11 memory data bus lines. OS/8 restarted with no problem, too. Started the diagnostic AJRLAC (the "Diskless Controller Test"). Immediately indicated a hard failure on bit 10! Oh $@#%. Now what did I do... But it just took a minute to pull the extender card and sure enough I had just made a bad solder joint reconnecting that pin and it had come apart with the flexing ;) Fixed that... running four passes without an error so far. Dare I touch the middle of the board again? Yep... flexing in both directions, no failures! I think I got it! Make that eight complete passes with the extender removed and the board in the cage. Running AJRLIA on a scratch pack now. Initally I got a very occasional seek/tracking error (Command Reg B 1017 or 1117) once per pass on each drive, but it's lessening with "exercise"... It's 90F in the computer room too, which may be above spec for an RL02 anyhow. Just finished Pass 0002 on Drive 1 without errors :) -Charles

10 years, 9 months

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Selling brazilian vintage computer gear

by alexandre.tabajara＠gmail.com

Dear sirs... Ok, life does nasty things to us, and seems it is my time. Due to personal and health problems, I'll have to sell some of my collection. As bad as it is, I can't really afford keeping much of my stuff. I'll save just the nice gifts I got from friends and my beloved //e "Woz edition". So, there are some computers that may be of interest to you - Milmar Laser IIc apple clone - Clone of the Apple //c, but it isn't a //e - it is a ][c in a case of a //c. Has power supply, original manual and external slot expansion. $800 o.b.o. - Prologica Sistema 600 - Clone of the Intertec SuperBrain - Prologica CP500 - Clone of the TRS-80 model III - Prologica CP400 (boxed) - Clone of TRS-Color model 1, in the box of a Timex Sinclair 2068(!) - Prologica CP300 - Clone of TRS-80 model III, but way portable - Prologica CP200 - Clone of Sinclair ZX-81 - Microdigital TK95 (boxed) - Clone of Sinclair ZX-Spectrum, but in a Commodore Plus/4 box (!) I'll have more interesting things, as soon as I have more time to dig the pile Shipping from Sao Paulo, Brazil. Thanks, Alexandre

10 years, 9 months

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Keys resurfaces

by aek＠bitsavers.org

Saw this in AFC Another water damaged collection heading to the landfill -- Subject: Houston (and everywhere else), we have ... an opportunity From: hlctminfo at gmail.com Injection-Date: Thu, 03 Sep 2015 15:37:06 +0000 My name is John Keys, and I incorporated the Houston Computer Museum in May= 2003 as 501(c)(3) non-profit. I've been good at collecting things. I've have various PDPs, an HP3000, SE= L 810A, SDS 910, and a Cray YMP/EL8. I have an IBM 083 card sorter and sev= eral keypunchs (models 024, 026, 029 and 129). I have over 1,200 books and= manuals. And those are just a small sample. That's the good news. The bad news is that it's all in storage, in my home, or in a 3,300 square-= foot warehouse. I don't have exhibit space. You might have heard that it = rains in Houston; the warehouse has flood damage that needs to be mitigate= d. I haven't been good at getting the 21st century to work for me, and this is= where you come in. I need a functional web page, one that makes it easier= for people to donate online. I need a contact email link that works. If you can help me get this done, I'd be grateful. What's at stake? I'm 70 years old, and if I can't make a go of this, all t= hat equipment will get recycled or hauled off for scrap or dumped in a land= fill. And all of that documentation will go with it. If you can help me with web hosting and web page design, let me know. Advi= ce is nice -- I've had lots of it -- but what I really need is people who c= an step up and do what I haven't done. I need help in cleaning all these ar= tifacts that were damaged by the flood. Contact me by email discuss how you= can help. If there are enough people out there who care about this stuff, we can do t= his. You don't have to live in Houston. You don't have to live on the Gul= f Coast. It's even OK if you don't live in Texas. To donate online, go to http://www.hlctm.org/services.htm and click on "Don= ate." To contact me, send email to hcmjkeys at yahoo dot com. Once we have something presentable, come visit. And thanks very much for r= eading this. John Keys

10 years, 9 months

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Ongoing debug of RL8A controller

by charlesmorris800＠centurytel.net

I still can't get my RL8A (M8433 RL01/02 disk controller card) working again in my 8/A system. It won't boot from the RL02 any more. In my backplane I found it to be mechanically sensitive (AJRLAC diskless controller test would show errors always involving bits 4-7 being unexpectedly 0's), and when the card was flexed gently the errors would increase dramatically during the test. No visible bad/missing solder joints or broken traces. Recently I sent the card to a list member who tried it in his system. He could boot OS/8, but when attempting to open a file with EDIT the system would crash. This behavior was repeatable and did not occur with his controller. I now have SerialDisk running via Omni-USB, emulating two RK05 drives from my laptop, booting OS/8. This works perfectly - until I put the RL8A in the backplane! Then the system won't boot and also corrupts the first part of the boot loader that resides at 0020-0045. However, only the first 7 instructions at 0020-0027 are mangled, and all seven words have their most significant six bits set to 0 (for example, 7240 becomes 0040). The selects to the various 8234's (open-collector drivers to the data bus) are working properly in a scope loop. Figured I was on the right track with a bad 8234. I physically disconnected the middle 4 bits of the DATA0..11 bus (at the extender card rather than hack up the board)... system still won't boot, still corrupting locations as described. Next, I disconnected the entire data bus, all 12 bits, same problem! So whatever is the trouble it's NOT an 8234 pulling on some of DATA0..11 as I thought! I am starting to think there is a defect with the DMA (aka Data Break) facility on either this card OR even the CPU itself... everything else in the system is programmed I/O, not DMA. Obviously something is pulling down the memory-data bus when it shouldn't be, and writing zeroes over the upper six bits of some words, but on this controller card there are only inputs from the memory data bus MD0..11. It has its own memory address registers for DMA which drive the MA0..11 lines. I checked the various signals coming out of the card and (at least statically) none of them are in the "wrong" state... Any thoughts on testing the DMA facility? thanks Charles

10 years, 9 months

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OmniUSB - further boards to make

by COURYHOUSE＠aol.com

the SMECC museum is a canadate if our onmnibus 8 still runs. have not powered it up in 20 years. In a message dated 9/4/2015 1:37:34 A.M. US Mountain Standard Time, spacewar at gmail.com writes:

10 years, 9 months

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raised floor possibly available

by jwest＠classiccmp.org

A building next door to one of my offices was a datacenter/colo facility. It has sat vacant for quite a few years, and the new owner contacted me yesterday about some unrelated items. I asked about the raised floor and she said "all available, dirt cheap, come over and look". Sometime next week I will go take a look, but I know folks here have occasionally expressed interest in getting a section of raised floor for their "machine room". If there's interest, let me know. Best, J

10 years, 9 months

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IBM 1620

by kevalm＠aol.com

Looking for an IBM 1620 to purchase. Any leads greatly appreciate. Kevin Tikker Sent from my iPhone

10 years, 9 months

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OmniUSB - further boards to make

by hachti＠hachti.de

Hi folks, as you might remember I made about 20 OmniUSB Omnibus to USB adapters. Since a few month they're all sold. The last days I got some inquiries for more. So I think of making a new batch. As my board supplier has doubled (It was so cheap before..!) the price for gold plated contact PCBs, the board will be more expensive in the end. And I massively underestimated the labour... And I'll overhaul the design. The original board description: http://pdp8.hachti.de/projects/omni_usb/ The facts about a new board: - Exactly same functionality - Smaller - Still gold plated contacts - Still KL8E compatible - Power supply parts will be moved away from the PCB's edge - USB connector will be moved away from the PCB's edge The board will cost (fully assembled and tested) EUR 105 (without VAT for overseas buyers) and About EUR with VAT for anyone in the EU. A still to design cusom handle (I think of laser cut acrylic with wood) to make the board the original size will be available in the EUR 25 range. If YOU are interested, please let me know. I'll make my decision with regards to the feedback I'll get from this posting. I need at least 10 seriously interested people to make it happen again. Kind regards Philipp

10 years, 9 months

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Reading ROMs

by marc.verdiell＠gmail.com

I was going to ask a similar question here, and I am sure it has been asked before. I do have a HP 82901 and a HP 9121 but I am not equipped to read ROMs, so I can't really help yet. Plus I will soon need the ability to burn ROMs for my HP 85 and HP 1000. Not only the standard 24 pin ROMs but the small 14 or 16 pin bootloader ROMs that Jay showed me at VCF. What would be a good ROM programmer that could read and write these of older HP equipment ROMs? Marc ----------------------- From: Vlad Stamate <vlad.stamate at gmail.com> Subject: Reading ROMs While I was trying to read the ROM in my 9121 for Eric Smith I found out that my Wellon VP-280 could not do it (it could not recognize it and only read FF FF FF FF). I could use it however to dump the ROM of an IBM PS2 that I cannot boot anymore (so it is not entirely useless). So I am asking what you all use to dump various ROMs from vintage PCs/peripherals/etc? Is there a good brand out there of E(E)PROM programmer? Do you roll your own solution with an Arduino/RaspeberryPi? Thanks, Vlad. -----------------------

10 years, 9 months

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Sign magnitude, one's complement, two's complement

by jlw＠jlw.com

This isn't quite the way I remember the CMU instructions working. Nor is it exactly how I've implemented them in my emulator. >Another oddball thing was then then-new Cyber 72/73 CMU. An interesting >beast, but not present on the 74. Presumably because an instack loop could move data faster. I always wondered, though, if you could put a CMU in the serial CPU on a 74-2x. Probably too messy. >It was possible initially to write code with the 46xxx CMU instruction >in first 2 parcels of an instruction word. All Cyber 73 CMU >instructions were 60 bits, No, the IM instruction is 30 bits. It's supposed to be forced upper. I don't recall whether the 72/73 were that picky and it would work in the first 3 parcels, or work only in the first one (thus being 60-bit equivalent) and pass in the others (with the rest of the instructions becoming arbitrary). >you could pack a call to a subroutine to do >the equivalent thing in the lower 30 bits for the 74. Worked pretty >cool Looks like it would. Aren't there some variant OSes that would put the monitor call parameters in the lower 30 bits of an XJ instruction? You could probably also pack a parameter in the B register, and another in the address, since those would mode out anyway (or be ignored in user mode)--you'll get to CPUMTR no matter what. ECS instructions would execute the lower 30 bits if the transfer failed; this all in user mode with no monitor intervention. You could probably do the same thing with a conventional XJ instruction. 6000s lacking ECS hardware and CEJ/MEJ treated all 01x instructions as 010 (RJ). Probably can't get away with that on a 70. >until the 170. There, different models supported different subsets >of CMU instructions (or not at all) It was all-or-nothing, no subsets. >--and attempting to execute one not >implemented was greeted with an error stop. The 170 people really >screwed that one up. 464xx and up were illegal on machines that did not (171) or could not (175) have the CMU option, or in other parcels on any 170. 46000-46377 were pass instructions. I don't know why they did this either, since there were no 170s with unmatched CPUs (like the 6700 or 74-2x). Also, some dual-CP machines (including the 72/73) could have 1 or 2 CMUs. Needed some special code in CPUMTR to avoid using the CMU for storage moves if there were fewer CMUs than CPUs, lest it be busy in the other CPU and we had to wait for it in monitor mode. It's possible that on 180s, 46100-46377 were illegal instructions, though the design goal for 170 mode was a 173. Perhaps the 175/740/750/760 did that too. Note also on 180s with CMUs (emulated), the instruction was limited to data in the first 262K; in particular CPUMTR couldn't use it for storage moves unless it played games with RA/FL in program mode (and it would still have to drag the instruction around into each segment). Too much of a kludge, I expect. -- Jeff Woolsey jlw at jlw.com

10 years, 9 months

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For sale: Random S-100 stuff (Seattle, WA)

by derschjo＠gmail.com

I'm doing a bit of cleaning out of random things I don't use much anymore; hopefully these can find a good home. Make an offer on these, I'd prefer local pickup (for the VDP-80 I require it, it's just too large/heavy/fragile to trust with shipping) near Seattle. Thanks, Josh Here's what I have, S-100 wise: Boards (in as-is condition, unless otherwise noted): - Tarbell 1011D FDC - Solid State Music VB1B video interface - SSM CB1A 8080 CPU (+2k RAM). Working, used to use it in my IMSAI . - Processor Technology 16KRA, 16K static RAM. - CompuPro (Godbout) RAM16 - 64K dynamic RAM (despite the name) - IMSAI MIO (rev. 2) - Serial/Parallel I/O board - IMSAI VIO (rev 2.1) - Video board - PSS RAM65 - 64K ram? (never could find a manual). - Piiceon 8K Program Saver (2708 EPROMs). Only two EPROM sockets (of 8) installed. - Ithaca Audio 8K static RAM board. Bad shape. Missing a row of chips, looks to be an unfinished kit. Corrosion. Computers: No-name (TEI generic chassis, about half as deep as an IMSAI, no blinkenlights) with the following boards: Thinker Toys SUPERRAM 16 - 16K static RAM. A bit of corrosion on a few chips, but should be easy to clean up Thinker Toys 32K static RAM. Also has some corrosion. The Memory Merchant MM16K14 - 16 K Ram. Corrosion as with the others. IMSAI SIO Rev-3. Dual serial board. Corrosion. Northstar ZPB-A2 Z-80 CPU board. Corrosion . It looks as if this system sat on end in a shallow pool (say, 2") of water for a couple of days and wasn't properly dried up afterwards; all boards installed have corrosion on their left sides, affecting a couple of rows of chips. The backplane also seems to be a bit corroded but is not as bad. Despite this, the chassis is very clean. Power supply seems to be fine. Definitely a project, but probably fixable with some new sockets and ICs. Complete IMSAI VDP-80 system (http://www.old-computers.com/museum/computer.asp?st=1&c=343) with manuals and software. Unknown working condition, but it's not in bad shape given the years -- some screen rot. I got it as a project and it's just been sitting there, waiting. Debating whether to hold onto it or not -- make me an offer I can't refuse :).

10 years, 9 months

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Reading ROMs

by vlad.stamate＠gmail.com

While I was trying to read the ROM in my 9121 for Eric Smith I found out that my Wellon VP-280 could not do it (it could not recognize it and only read FF FF FF FF). I could use it however to dump the ROM of an IBM PS2 that I cannot boot anymore (so it is not entirely useless). So I am asking what you all use to dump various ROMs from vintage PCs/peripherals/etc? Is there a good brand out there of E(E)PROM programmer? Do you roll your own solution with an Arduino/RaspeberryPi? Thanks, Vlad.

10 years, 9 months

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'New' PDP-11 prints

by jnc＠mercury.lcs.mit.edu

A lengthy, and pleasant visit with Paul A, post-VCFMW (BTW, belated congrats on that, Jason - I don't know where my brain was last night - fried from the long drive yesterday, probably), has produced a number of missing PDP-11 FMPS's! Most importantly, we now have the 11/73 prints, which I will be scanning Real Soon Now. (So now I can have a crack at fixing all the broken ones I have! :-) That does leave us needing the 11/83/84 CPU prints, so if anyone has a set... I also found prints for the MF11-U, MF11-W, and MM11-Y; none of which appear to be on-line (although the MF11-U ones might be in the 11/05S print set, which ISTR is online). So I'll have a lot of scanning to do when I get home. The reason for this message is to ask if anyone has a special need for any in particular; if so, I will move those to the head of the list for scanning. I don't think the ME11-L prints are online either, but those I have in my 11/05 print set - I'll have to see if that print set is online somewhere, no point re-scanning them, if so. There are a number of things like that (e.g. the H786 power supply for the BA11-N; not available separately, but in the 11/23 FMPS, if you know to look there): we ought to produce some sort of registry, to collect such information in one place. Noel

10 years, 9 months

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Dec 8235 IC?

by steve＠tronola.com

Hi Simon, As others have implied, the DEC8235 is a Signetics 8235N. It's available >from obsolete part distributors. A quick search turns up this source: http://www.4starelectronics.com/part_detail/8235N.html While the RFQ instead of a price is bad news in some places, I've had good results with that in the obsolete parts arena. > is there a list of equivalents for DEC ic's? --- Thought I had a longer list somewhere but this short list is what I find at the moment: DEC# Generic ---------------------- 97401 7401 8881 7439* Quad 2-inp NAND OC 8266 8266 Signetics 2-inp 4-bit wide mux 8270 8270 Signetics may = TI 74178 according to posts in cctech. 8271 8271 Signetics 4-bit SR in 16p pkg = TI 74179 8251 N8251N Signetics BCD/decimal decoder in 16p pkg 5380 SP380 Signetics 5314A SP314A Signetics 8640 DS8640 National 380 (?) SP384A Signetics Quad 2-in OR gate *Note that some DEC8881s have been reported as having 7439 markings on the bottom. Steve Lafferty

10 years, 9 months

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Serial Disk Server to PDP-8/A

by charlesmorris800＠centurytel.net

I just installed Kyle Owen's Serial Disk Server on my 8/A (at high speed via an Omni-USB card I got from Philipp Hachtmann). There was a bit of a learning curve for me since I've never used any *nix programs before, or heard of Cygwin... But Kyle was very helpful, exchanging several emails this afternoon and it only took me a couple of hours to get everything figured out, up and running. It even comes with the indispensable diagpack2.rk05 OS/8 image already embedded in the .zip file, and it's now running on the real hardware. Haven't tried uploading anything yet but I'm sure that will work too! NOW maybe I can get my RL02 controller card (and the rest of the hardware, the power supply has started glitching again) debugged. Many thanks to Kyle for creating this very useful software :) -Charles

10 years, 9 months

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Reading ROMs

by radiotest＠juno.com

At 07:56 AM 9/3/2015, Vlad Stamate wrote: >So I am asking what you all use to dump various ROMs from vintage PCs/peripherals/etc? For 1980s ROMs I still use the Serial EPROM Programmer published in BYTE by Steve Ciacia in the mid-80s. Dale H. Cook, Roanoke/Lynchburg, VA Osborne 1 / Kaypro 4-84 / Kaypro 1 / Amstrad PPC-640 http://plymouthcolony.net/starcity/radios/index.html

10 years, 9 months

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MEM11 Status Update

by cube1＠charter.net

RK05 would be suitable Guy Sotomayor <ggs at shiresoft.com> wrote: > > >On 9/2/15 8:42 AM, js at cimmeri.com wrote: >> >> >> On Tue, Sep 1, 2015 at 11:39 AM, Jay Jaeger<cube1 at charter.net> wrote: >> >>> On 9/1/2015 10:01 AM, Ethan Dicks wrote: >>>>> run Unix V1 >>>> I am very interested in the MEM11 for this exact reason. I have a >>>> PDP-11/20 that I'd love to do this with. >>>> >>> You could also try Mini-Unix on your 11/20, which might support a >>> wider range of devices. >> >> Very interesting. Does Guy's MEM11 provide what's needed for Mini >> Unix without having to write special drivers? >> >Not sure what Mini-Unix requires w.r.t. devices. > >TTFN - Guy >

10 years, 9 months

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Multitech MicroProfessor

by wrm＠dW.co.za

> >Possibly a long shot since I think the MPF was only a UK/Europe thing but At least one made it to South Africa. But no, I have neither the expansion board nor the manual I'm afraid. W

10 years, 9 months

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Wanted: ROM images from HP 9895, 82901/82902, and other HP-IB disk drives

by spacewar＠gmail.com

If anyone has dumped the ROMs from the HP 9895 (8-inch) or 82901/82902 (5 1/4-inch) HP-IB disk drives, which use the Amigo command set, I'd appreciate copies of the images, ideally along with the HP part numbers of the EPROMs (probably 09895-xxxxx and 82901-xxxxx). For that matter, I'd be interested in ROM images from any of HP's other HP-IB disk drives, floppy, hard disk, or combined. Also ROM images from the 9114A and 9114B HP-IL disk drives. I already have one ROM image each from the 9114A and 9114B, but there were multiple firmware versions. Thanks! Eric

10 years, 9 months

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VCFMW

by marc.verdiell＠gmail.com

I wanted to extend my thanks to the organizers of this event, and to Jay in particular who showed me the way around bringing up a cantankerous HP 1000 E system in real time, and somehow never got tired of my newbee questions. And the Chinon FR-506 5.25" drive that I picked up there for a very reasonable price, unlike the one I had bothered you about in a previous thread, actually works! All in all a very worthwhile way to spend award mileage on a trip from California to Chicago... Marc > From: "Jay West" <jwest at classiccmp.org> > Subject: VCFMW > > VCFMW is over, and I wanted to give a huge CONGRATS to Jason for the > resulting show that he put on [...] > > J

10 years, 9 months

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KV-S3065CW scanners

by aek＠bitsavers.org

http://www.ebay.com/itm/201392632552 this is a good deal if the paper path isn't scratched up in them. the CW model has a 11" width feed and can scan a sheet 6 feet long. these are the ones I've been using for 5+ years just don't need any more right now

10 years, 10 months

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'New' PDP-11 prints

by jnc＠mercury.lcs.mit.edu

> From: steve shumaker > "FMPS" is.....? "_ _ print set"? "Field Maintainance Print Set". Noel

10 years, 10 months

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TK70 sticky unload button?

by kylevowen＠gmail.com

Has anyone else come across this? My TK70 wouldn't eject, and having not had one before, I didn't know just how tactile the unload button should be. After further examination and prodding, I determined that the button was pretty much stuck and refused to come out. Taking the front off and exposing the board indicated that the button seems to originally have been rubber, which is now a nice black tarry goo. I think I can replace the button with a standard tactile push button, this time without any rubbery material. Hopefully that's my only issue. http://i.imgur.com/9Fqb0SB.jpg http://i.imgur.com/AxstKpq.jpg http://i.imgur.com/PCFCfwH.jpg Kyle

10 years, 10 months

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Programming & L. Carroll

by c.murray.mccullough＠gmail.com

This is off topic, so-to-say, but computer languages can be esoteric: It's the 150 anniversay of L. Carroll's "Alice's Adventures in Wonderland." May I dare say most people, including myself here(I studied languages like BASIC, COBOL & PL/C, know very little about the programming languages that make old & new computers do what we wish looking backwards? Logic, like "Alice's...", can elude us at any time... Happy computing. Murray :)

10 years, 10 months

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MEM11 Status Update

by ggs＠shiresoft.com

I'm making good progress on the MEM11 firmware. I spent the last few days re-doing the firmware build environment. Previously, it would build all the files each time. Now there is a proper Makefile (even though it takes about a minute to build everything). I realized that I needed something better than what I had because there are multiple targets (emulator, FPGA eval board and the MEM11 board itself). Right now I'm focused on getting as much debugged on the emulator since it has a reasonable debuging environment. I've also integrated various test programs into the build environment and use various low level code as part of the main firmware for hardware access. This "kills two birds with one stone" since it tests not only the various hardware functions it also allows me to debug some of the firmware separately from the full code base. At this point, the emulator fully supports all of the J1 instructions (and they all work too!). In terms of I/O (that will be part of the MEM11 board) it supports LEDs and various configuration inputs, FRAM, UART and timers. The biggest risk that I'm taking is that the UART is emulated as being directly exposed. On the MEM11 hardware, the UART will be connected through a SPI interface which requires that all accesses to the UART are asynchronous transactions. The biggest piece of work remaining on the emulator will be emulating the Unibus interface. The work here will mainly to create a means to script various Unibus transactions. However, before doing that, I'll be testing out the boot loader code and the configuration firmware since none of that is dependent upon the existence of functional Unibus hardware. TTFN - Guy

10 years, 10 months

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Multitech MicroProfessor

by binarydinosaurs＠gmail.com

Folks, Possibly a long shot since I think the MPF was only a UK/Europe thing but I'll quite happily be proved wrong. I've had a chap asking for a scan of one of my manuals that would necessitate partial destruction. Anyone got the IOM-MPF manual? It's a 6k RAM expansion board for the MicroProfessor MPF-1P seen on my site here: http://binarydinosaurs.co.uk/museum/multitech/iom-mpf.php (Ironically today I'm working in a building that has a proper book scanner, but all the staff that operated it were 'let go' earlier this year) Cheers -- adrian/witchy Owner of Binary Dinosaurs, the UK's biggest home computer collection? www.binarydinosaurs.co.uk

10 years, 10 months

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Data General Projects

by jwest＠classiccmp.org

It's time to start on the Data General stuff I've had forever but not yet restored :) This time much of it has finally made its way into the workshop so perhaps there will be some progress. Pictures of the initial set of racks to work on are at https://www.flickr.com/photos/131070638 at N02 , but there's more DG racks with devices that can be used at both houses. Trying to decide where to start really, and what pieces to use and what to trade off (I'm not really familiar with DG stuff, yet). At the least, I know I don't want/need the large FPS (Floating Point Systems model 100R) box. Anyone have interest in that part? If folks have docs that might help but are private, I'd appreciate a little access or pointers. My initial questions revolve around what boards from the Nova 4, S/130, and S/200 can be interchanged if desired, I'm still trying to decide which cpu to keep and which peripherals. Time to read what docs I have and scrounge up ones that I don't! I know I got keys with these systems, but don't see them anywhere. The 6021/6023 tape drive uses vacuum columns, that will be fun. The TP1 is an awfully cool retro printing terminal. The 5821NT terminal has (by a large margin) the worst screen rot I've ever seen. The 6125 tape drive is in an odd "desktop" stand like I haven't seen before. Let the fun commence. J

10 years, 10 months

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VCFMW

by jnc＠mercury.lcs.mit.edu

> From: Jay West > Ian's 11/23 11/34. I know, I know, those blasted PDP-11's; under-foot everywhere! :-) Noel

10 years, 10 months

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VCFMW

by jwest＠classiccmp.org

VCFMW is over, and I wanted to give a huge CONGRATS to Jason for the resulting show that he put on. Most of you will recall it was originally at Purdue, then was moved to Heron Point (IL). That venue was no longer available, so Jason scouted out a new venue (Holiday Inn) in Elk Grove Village, IL. Simply put, the show could not have gone better. The facilities were top-notch, a fairly good restaurant attached, and it worked out very well. I - as well as a few others - were extremely grateful for the big double doors that enter the venue directly from the parking lot (with no 'bumps') for bringing in "big iron", and there was pretty AMPle electrical service for my HP2000 as well as Ian's 11/23 (and a handful of pdp-8's as well). Not to mention all the other exhibits. power wasn't a problem. I've always enjoyed the show at Heron Point, but this year the "bar was raised". Kudos to Jason! There was of course a substantial commodore and some apple presence, and I really enjoyed seeing how many of those folks are taking those machines "into the modern age". My own personal favorite exhibit was DJ's ASR 33 Teletype (a fully working mint condition restoration - GREAT JOB DJ), and the altair 680 and accessories that were driving it. While that was my favorite exhibit, every exhibit had something to offer. I like the altoids can 1802 :) I've been to VCF west, as well as VCF east, and they are both great events. I personally make a point of getting to VCFMW every year, and look forward to the event next year. I highly encourage folks that have not been to a VCFMW yet to give it a shot. Bring something to exhibit, or just take in the show; enjoy the comradery and meet new folks as well. Jason - fantastic job, it was a great event! Best, J

10 years, 10 months

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MicroVAX 3800 DSSI Issues

by kylevowen＠gmail.com

I can boot to VAX/VMS 5.4-2, but on startup, I see this message: %DCL-E-OPENIN, error opening DUB0:[RS1R4]RS1LOG.COM; as input -RMS-E-DNR, device not ready, not mounted, or unavailable %DCL-E-OPENIN, error opening DUB0:[ORACLES]ORAUSER.COM; as input -RMS-E-DNR, device not ready, not mounted, or unavailable %DCL-E-OPENIN, error opening DUB0:[ECMS4]LOGIN.COM; as input -RMS-E-DNR, device not ready, not mounted, or unavailable Okay, so DUB0: isn't mounted, I guess. ROHIT1$ show dev Device Device Error Volume Free Trans Mnt Name Status Count Label Blocks Count Cnt R7CY2A$DIA0: Mounted 0 VMS54_2DISK 173289 134 1 ROHIT1$DUB0: Online 0 ROHIT1$DUB1: Online 0 ROHIT1$DUC10: Online 0 Device Device Error Volume Free Trans Mnt Name Status Count Label Blocks Count Cnt ROHIT1$MUA0: Online 0 Device Device Error Name Status Count FTA0: Offline 0 OPA0: Online 0 TWA0: Offline 0 Device Device Error Name Status Count IKA0: Offline 0 IMA0: Offline 0 INA0: Offline 0 PTA0: Online 1 PUA0: Online 1 PUB0: Online 2 PUC0: Online 2 PYA0: Offline 0 SJA0: Online 0 SJA1: Online 0 WSA0: Offline 0 XQA0: Online 0 Looks like they're online but not mounted. If I'm reading the help pages correctly, I should just be able to mount it at this point: ROHIT1$ mount dub0: disk0 %MOUNT-F-INCVOLLABEL, incorrect volume label -MOUNT-I-VOLIDENT, label = 'USER01 ', owner = ' ', format = 'DEC FILE11B ' I tried giving it the correct label, but it still didn't seem to mount. Now I wanted to see if the MSCP server is running: ROHIT1$ show device/served MSCP-Served Devices on ROHIT1 1-SEP-2015 10:55:19.39 Queue Requests Device: Status Total Size Current Max Hosts %SHOW-E-MSCPNOTLD, MSCP-Server code not loaded No, it doesn't look like it...so getting back to the >>> prompt, I do a bit more investigation: >>>show dev UQSSP Disk Controller 0 (772150) -DUA0 (RF71) UQSSP Disk Controller 1 (760334) -DUB0 (RA81) -DUB1 (RA81) UQSSP Disk Controller 2 (760340) -DUC10 (RA81) UQSSP Tape Controller 0 (774500) -MUA0 (TK70) Ethernet Adapter 0 (774440) -XQA0 (08-00-2B-17-3F-37) I should be able to get to the PARAMS> prompt now: >>>set host /dup/uqssp/disk 1 params Starting DUP server... UQSSP Disk Controller 1 (760334) Stopping DUP server... >>> Or not? Why can't I seem to get to the prompt? I can with disk 0: >>>set host /dup/uqssp/disk 0 params Starting DUP server... UQSSP Disk Controller 0 (772150) Copyright 1988 Digital Equipment Corporation PARAMS> show allclass Parameter Current Default Type Radix --------- ---------------- ---------------- -------- ----- ALLCLASS 0 0 Byte Dec B PARAMS> Can't seem to get to PARAMS> with disk 2 or tape 0 either. Only disk 0 seems to work. Can anyone provide any suggestions? I'd like to see what else is on the system. Pictures here: http://imgur.com/a/WYGra Thanks, Kyle

10 years, 10 months

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Advice about repairing an IBM 5151

by vlad.stamate＠gmail.com

Hi all, I am trying to identify why my IBM 5151 display has no picture when connected to a normal MDA card in a IBM PC 5150. So armed with an oscilloscope, digital multi-meter and the SAMS Computerfacts for it I started to investigate. First, the card does send out signal and that signal does reach the board inside the monitor. I checked the power part of the circuit, all diodes and the transistor check fine. I probed some of the vertical and horizontal transistors and there is a signal there too. Then on the video board both TR19 and TR20 have on their collector and emitter (respectively) a signal (95Khz). What else can possibly be wrong? The SAMS manual talks about "injecting a video signal" at different pins however I have no idea exactly how to do that. So there is current going out of the power part and there is signal on the video board attached to the neck of the CRT. Regards, Vlad.

10 years, 10 months

4
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TK50/TK70 Info

by kylevowen＠gmail.com

I hope to start backing up my MicroVAX 3800 soon via the TK70. Sounds like 8mm is more unreliable than the TK70, and I don't have but one magneto-optical disk. Are there any precautions I need to take before sticking a tape in the drive? Pinch rollers that might be gooey? I assume the TK70 drive is backwards compatible with TK50 tapes? Lastly, I've got some tapes that I couldn't find much info on. Here are the labels: ER206200-00 REV G 1.03 P4000 DOWNLINE VMS SOFTWARE 09-29-89 (C) 1988 EMULEX ER2062014-00 REV A P4000 LAT-TCP/IP VER 2.00 05/14/90 TK50 (VMS LOAD) (C) 1990 EMULEX ER2062014-00 REV 01 P4000 LAT-TCP/IP VER 2.00B2 05/1/90 TK50 (VMS LOAD) (C) 1990 EMULEX ER2062014-00 REV 00 P4000 LAT-TCP/IP SOFTWARE 3-22-90 TK50 (VMS LOAD) (C) 1990 EMULEX Are any of those worth keeping? Any tips on getting those tapes online using my VAX? I know there are utilities for the PDP-8 and PDP-11 world, but being thrown into VAX and VMS so quickly, it may take me a bit to catch up. Any recommendations on reading material? I also have a tape for VAX Occam 2 from INMOS. I know what that is, as I have a 64-node Transputer array. It'd be nice to get that going at some point for fun. Thanks, Kyle

10 years, 10 months

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De-yellowing results

by evan＠snarc.net

Brought my Apple //e Platinum to a MARCH workshop last weekend. We used a bottle of a "B-Blond" which I think is a woman's hair product from England. We painted it onto the computer case, wrapped the case in Saran Wrap, and left it outside in the sunlight for a few hours. The results were dramatic. Here's a reminder of the "before" showing the top cover. You can see the original platinum color at the bottom where it tucks into the main case. I don't have a "before" shot of the main case, but it was as badly yellowed as the top cover:http://snarc.net/yellowing.jpg. Here are some "after" shots. 1. Back at home. Notice color difference vs. the disk drives and system saver --http://snarc.net/desk.jpg. 2. Up-close. See the streaking and slight blotches? I believe that's from where the sunlight was blocked by trees (as the sun moved vs. the horizon that afternoon) and also from where the Saran Wrap bunched up in a few places --http://snarc.net/streaks.jpg. 3. De-yellowed case on the right. Case on the left is from another Platinum in the MARCH collection. I did a quick-and-dirty de-yellowing of the left half of that one, just to show another before/after shot. Prior to experimenting on it, this is the one that Ian Primus and others used for pranking me by swapping it with mine, overnight while I slept! :) -- http://snarc.net/both.jpg. So my computer isn't perfect and never will be, but overall it was a successful experiment.

10 years, 10 months

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Sales of unearthed Atari games total more than $100,000

by lbickley＠bickleywest.com

I was surprised to see the average cart price to be over $120! http://www.foxnews.com/us/2015/08/29/sales-unearthed-atari-games-total-more… Lyle -- Lyle Bickley Bickley Consulting West Inc. http://bickleywest.com "Black holes are where God is dividing by zero"

10 years, 10 months

17
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APL\360

by Paul_Koning＠Dell.com

Probably old news to some, but I just ran into this 3 year old article. Gotta dust off your Hercules: http://www.computerhistory.org/atchm/the-apl-programming-language-source-co… And also http://wotho.ethz.ch/mvt4apl-2.00/ paul

10 years, 10 months

2
1
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Future Computers FX31

by jules.richardson99＠gmail.com

Anyone know anything about this system? Someone on a vintage computer group on Facebook has one (missing its keyboard[1]), and having seen some photos, although it seems to be mostly a generic PC-compatible with 8-bit ISA, it's notable for having a "video in" connector on the back, as well as LAN in/out ports (proprietary? presumably some kind of ring network though) Surprisingly, Google's coughing up nothing of any use. I'm guessing someone tried making a PC-compatible with a few built-in extras as a selling point (not that uncommon back then), and of course it didn't work out. [1] Although the keyboard socket is something oddball, I see four wires leading back to the motherboard and an 8042 near to where the keyboard connects, so there's a possibility that it can be wired to a standard AT (or possibly XT) keyboard - although of course maybe the scan codes or even the protocol are completely different, and the owner has themselves a nice boat anchor... cheers Jules

10 years, 10 months

5
7
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PDP-12 Restoration at the RICM

by michael.99.thompson＠gmail.com

The team at the LCM sent is a listing of their Kaleidoscope program. We toggled it in and it runs great! You fiddle with the bottom two analog input knobs to find settings that will make patterns. You can watch it here: https://youtu.be/_KZG_kE-K-0 Two more days of debugging on the PDP-12 LINCtape controller didn't accomplish much. We now a lot more about what is not broken, but haven't found the intermittent problem with reading tapes. We reran the Tape Quickie and TAPE CONTROL TEST, PART 1 and 2 to make sure that the controller was still OK. We tried reformatting LINCtapes on the right drive in the TU56. It sometimes worked OK, sometimes not. It doesn't seem to matter what tape we use, the intermittent behavior is the same. A LINCtape that formatted OK worked fine on the Tape Data diagnostic for quite a while and then halted, so the TC12 and the TU56 are mostly working. We noticed that if we were searching for a tape block on the right drive with the left drive OFF, it usually worked OK. With the left drive in LOCAL or REMOTE the right drive had trouble finding blocks. The only change between OFF and LOCAL & REMOTE is that the power to the motors is enabled. The motor power supply voltages looked OK in OFF and LOCAL & REMOTE. We swapped lots of TU56 boards between the left and right drives and a spare TU56, but didn't find a problem yet. Since we replaced the tape head on the right drive we speculated that we introduced a tape head skew problem that was causing problems when reading tapes created on other drives. The left drive was untouched, so we thought that one might work better. The left motor for the left drive in the TU56 was sticking so much that it would not turn under its own power. We suspected bad bearings, so that should be an easy mechanical fix. When we removed the motors we found that the motor shafts turned freely. We found that there is a pair of bushings and spring on the motor shaft that take up the play and make the tape alignment more accurate. The lubricant on bushings and shaft had dried out and was sticky, making it difficult to rotate the shaft. Unfortunately after cleaning and reassembly we found that the left drive would barely read a tape. Maybe this is related to the previous problem? Warren saw evidence on the logic analyzer traces of the TC12 that might indicate a timing problem in the TC12 LINCtape controller. Next Friday we will check the TC12 and TU56 timing adjustments. -- Michael Thompson

10 years, 10 months

1
0
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Saved DEC kit

by witchy＠binarydinosaurs.co.uk

Folks, Before the great company meltdown of Jan this year and as I discovered the great mailing list breakdown of not long after I saved some DEC kit for list members to collect, namely: Alpha 800 (rackmount) uVAX 2000 VAX 4000VLC These are still in my hallway in Cambs UK so if either the people who called for them or failing that anyone else would like to collect that'd be great. I have proper scales for shipping weight but they need to be calibrated and I'm struggling to find anything that weighs exactly 25kg :) (I know the Alpha800 is '24-28kg', scales are pretty correct there, as they are with my DS25, but they get a DS10 horribly wrong so...) -- Adrian/Witchy Binary Dinosaurs creator/curator Www.binarydinosaurs.co.uk - the UK's biggest private home computer collection?

10 years, 10 months

13
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test-drb