test-drb

test-drb@ccmp.vtda.org

101090 discussions

by jnc＠mercury.lcs.mit.edu

Hey, anyone need a KI10/KL10 I/O Bus terminator: https://gunkies.org/wiki/File:KIKLIOBusTerm.jpg (H867)? Since I don't have either a KI10 or a KL10, I'm unlikely to ever have a need/use for this one! :-) Noel

4 years, 9 months

Looking for Maxtor LXT/MXT series firmware updates / docs

by classiccmp＠philpem.me.uk

Hi folks, Has anyone happened to squirrel away a copy of the Maxtor/Sequel LXT or MXT series documentation or firmware updates? I've got an LXT200A sat on the bench which seems to have corrupted on-disk firmware -- the firmware version is shown as "1.02BROM" I've got an identical second drive which works but has bad sectors, which identifies as "1.02BHAT". I'm hoping to dump the on-disk firmware on the working one and load it onto the dead one -- either onto disk or temporarily into RAM... high hopes I know. This is all an experimental thing - the local data recovery firms aren't interested in a drive this old or this small... If anyone has a mirror of Maxtor's old FTP site or support BBS, these are some of the files I'm after... MXTA_53.EXE MAIN 41K 03/94 MXT540A/AL Frimware Rev 5.3 firmware 540 MXTA_54.EXE MAIN 40K 03/94 MXT540A/AL Firmware Rev 5.4 Firmware Upgrade for MXT-540AT. MXTA_55.EXE MAIN 40K 03/94 MXT540A/AL Firmware Rev 5.5 Firmware Upgrade for MXT-540AT. MXTA_60.EXE MAIN 41K 03/94 MXT540A/AL Firmware Rev 6.0 Firmware Upgrade for MXT-540AT. Alternatively the same covering the LXT series. Or this (or similar) documents covering the LXT series: MAXTOR LXT-200A TECHNICAL MANUAL 1019707 Cheers Phil.

4 years, 9 months

IBM 534 data entry (Keypunch) machine for sale near Spokane, WA

by spam＠hell.org

Just saw this on CraigsList - not my ad. It might be worth someone grabbing before it goes to a scraper. https://spokane.craigslist.org/sop/d/spokane-ibm-card-punch-machine/7331662… -mike

4 years, 9 months

Items Wanted

by mmcgraw74＠gmail.com

> > Date: Sun, 11 Jul 2021 19:57:06 -0500 > From: Eric Moore <mooreericnyc at gmail.com> > To: Classic Computers <cctalk at classiccmp.org> > Subject: Re: Items Wanted > Message-ID: > < > CAE1er56kMOyVeQ4eorgS8fUjHRrCKy_T7DAwTUpebFJAWSO2gA at mail.gmail.com> > Content-Type: text/plain; charset="UTF-8" > > Also, I am in central texas :) > > Thanks! > > On Sun, Jul 11, 2021, 9:33 AM Eric Moore <mooreericnyc at gmail.com> wrote: > > > Hello, I am looking for any of the following items. I have terminals and > > assorted qbus and S100 cards for trade, or am happy to discuss payment > :). > > > > 1) Qbus scsi card > > 2) Emulex TC01 > > 3) QBUS bus probe > > 4) SD2SCSI > > 5) Teletype DRPE or ARPE (already have a BRPE) paper tape punches > > 6) AED/tektronix/SGI/etc... graphics terminal > > 7) Unfomatted pertec controller (any bus) > > 8) S100 jade bus probe, system monitor board, or similar > > 9) Anything fabri-tek, Gould, or SEL > > 10) blinkenlights and flippenpaddles computers, any interesting front > > panels, etc... > > 11) ESDI disk emulator > > > > Thank you! > > > > -Eric > > > > > > > > Eric, I'm on NW side of Houston and have a Siemens T100 teleprinter with stand in my garage that needs a new home :) It is untested, but too heavy to ship. Monty

4 years, 9 months

TECO

by paulkoning＠comcast.net

For the TECO fans out there this might be of interest: https://github.com/pkoning2/pyteco paul

4 years, 9 months

Help Identifying Mystery SBUS Cards

by rshepprd＠gmail.com

The only thing I got from the FCCID (GWV 76CG3) on the ?SVideo with Composite? was ?Color Frame Buffer I/O Card? Richard Sent from Mail for Windows 10

4 years, 9 months

Help Identifying Mystery SBUS Cards

by classiccmp＠jouhe.org

Hello all, I was hoping to tap into the considerable Sun Microsystems experience within this group. I picked up a significant quantity of Sun SPARC equipment back in the early 00?s and due to life/children/etc. have only recently been able to start cataloguing it. In particular, I had a somewhat tatty box full of assorted SBUS cards. Amongst the usual GX / TGX frame buffers, ethernet and narrow SCSI cards were some more unusual ones I?ve struggled to identify. I have photographed (poorly, I only have my mobile phone camera) the items, and they can be viewed here: https://www.dropbox.com/sh/kv42ig8nucikt0p/AAAKMZkqn9r19Ti0yKllQ2g8a?dl=0 <https://www.dropbox.com/sh/kv42ig8nucikt0p/AAAKMZkqn9r19Ti0yKllQ2g8a?dl=0> Here is a text description of the cards, in case it can be useful: (1) A dual-width SBUS card with no internal or external interfaces or backplate. Other features include 2x LSI chips 'LIA7321 EK7B7483' and 'LIA6371 EK7B7484? and a sticker displaying '7B7488 011 0110-014 0643 1700556 9651? a barcode ?J0BAW?. I wondered if it might be a DSP of some kind? (2) A dual width SBUS framebuffer, with space for a piggyback daughter SBUS card in the middle. It features 3 x Bt457 RAMDACs and an Actel A1020A chip. (3) A 3M fibre card, looks like a prototype based on the number of bodge wires. FDDI? Marked '3M ASSY 78-8095-5382-5', ROM marked FOSSIL BD. 1AS8. (4) Possible Serial card with a DB9 connector, although there?s WAY too much logic for a simple serial card. Has a jumper for 4Mhz / 16Mhz which hints at maybe something Token-ring? (5) A SBUS card with S-Video and what I assume to be composite. Looks like a 501-3019 on first inspection but there?s less logic and no heatsink on board. (6) A rather beautiful (to look at) SBUS card by Performance Technologies Inc. This one strikes me as a multi-port serial card although I don?t have the breakout HD80 lead for it. Has a chip marked 820P010201 HG62S038R02F 9120, a sticker ?120P010001' and on the back of the board '#595801-01 DC 9116 NT2V0 94V0' and '124-010000?. Any insight would be gratefully received! Thanks, Austin.

4 years, 9 months

OT: SiC Radio for Venus lander

by rdbrown0au＠gmail.com

Alan Mantooth, Carl-Mikael Zetterling and Ana Rusu (28 April 2021) "The Radio We Could Send to Hell: Silicon carbide radio circuits can take the volcanic heat of Venus" IEEE Spectrum https://spectrum.ieee.org/semiconductors/materials/the-radio-we-could-send-… "The average surface temperature on Venus is 464 ?C, the atmosphere is dense with highly corrosive droplets of sulfuric acid, and the atmospheric pressure at the surface is about 90 times that of Earth." (Teflon melts at 327 ?C) The following thesis describes the Vulcan II chip mentioned a bit more Benavides Herrera, Maria Raquel, "An RS-485 Transceiver in a Silicon Carbide CMOS Process" (2018).Theses and Dissertations 3067 "The RS?485 was designed in a 1.2 ?m SiC CMOS process technology developed by Raytheon Systems Limited (UK) called High Temperature Silicon Carbide (HiTSiC?). The components available in this process include: NMOS and PMOS devices, on-chip resistors, diodes, and capacitors. The process key features are given below: ? 4H-SiC process ? N-type substrate ? Supply voltage of 15 V 5? Single metal layer, two layers of polysilicon (one being high sheet resistance poly) ? Operating temperatures greater than 300?C" ... --- In 1988's 1.2?m CMOS process the MIPS R3010 floating-point coprocessor was about 75,000 transistors on an ~8mm x 8mm die. Are there markets for SiC CMOS devices with large transistor counts? Watching Curious Marc's video mentioning Triton missile/Saturn V bit-serial computer implementations, reminded me of: Olof Kindgren (2019) Bit by bit - How to fit 8 RISC-V cores in a $38 FPGA board https://riscv.org/wp-content/uploads/2019/06/12.15-SERV-Zurich-Copy.pdf https://github.com/olofk/serv "SERV is an award-winning bit-serial RISC-V core" (RV32I) (Not an engineer - guessing) If process limits mean large SiC memories are unlikely, what other technologies would work in the 400?500?C temperature range? Magnetic bubble memory? Twistors if threading cores automatically remains infeasible? For cameras could you build vacuum tube sensors containing SiC devices if useful?

4 years, 9 months

DEC HP sgi ibm and misc for sale

by lyokoboy0＠gmail.com

I am making room to work on my pdp 11 and mainframe computers. The following things are for sale : 3 Dec decmate computers with kb and monitor. Partway loads into the WP os but the floppy is bad, and i dont have more Sgi tezro Hp 9000 desktop for hp -ux with cables Working microvax 3100 with install of vms. Vt terminal availible for sale too to go with it. Hp 9000 for basic. Was used with test insturments like volt meters, relay controllers hpib etc for process control. Many hp keyboards with chicklet keys availible for this system Tandy vgm 300 monitor Enough crt monitors to sink a boat. Nec, viewsonic, ibm, etc. S100 bus computer chassis with backplane, power supply and proto boards. A single S100 backplane Isa /pci single board computer backplanes Isa 486 and pentium single board computers. Works standalone or with previously mentioned backplane Rackmount 68k vme bus motorolla computer with floppy, hard drive and proto boards. (Must be sold together will not seperate) books for like every version of irix apple early windows maya, power animator, discreet, etc. Sgi install cd sets. Sgi power animator cd. Studio paint. Misc hotmix cd's. Trs 80 model 3. No keyboard. Posts, bad floppy drive hangs up boot. Unplug it and it works. Big / heavy. Dec alphastation 255 computers x3 I had vms on them at some point. Wyse dumb terminal in original box Many televideo dumb terminals Ibm bladecenter h chassis with misc blades and spare fans etc. Shipping will be expensive. Hp 50mhz dual trace scope 54200a. Working apple mac plus with kb and external 20 mb hard drive. No battery damage. Clean. Boots. Runs. Im sure to find more to list. Send some offers my way and ill ship it out. Located in melbourne fl. https://mastodon.technology/@mrbill0/media? Most of my stuff is on my mastadon gallery, welcome to scroll through. I can provide pictures of said machines upon request, too much to take pictures of right now though. --Devin D.

4 years, 9 months

In search of RLX blade software

by camiel.vanderhoeven＠vmssoftware.com

I?ve been given a couple of RLX blade server chassis loaded with blades (one with Transmeta Crusoe cpu?s, and one with Pentium III cpu?s). I hope you?ll allow me to count these as ?vintage? because of their interesting origin: the Pentium III loaded chassis was part of a 768 node computer cluster at the Sanger Institute in the UK, and was used in the last stretch of the DNA sequencing computations for the Human Genome Project. I?d like to build a compute cluster out of these, but I don?t have the rpm?s they supplied to customize Linux for their blades. Ideally, I?d hope to find a copy of their ?Control Tower? blade management software, and their customized Linux installation images, but just the bare rpm?s would do for now. From the RLX platform guide, I?d hope to find: kernel-*rlx*.i386.rpm kernel-headers-*rlx*.i386.rpm devfsd-*rlx*.i386.rpm ucd-snmp-*rlx*.i386.rpm net-snmp-*rlx*.i386.rpm ucd-snmp-utils-*rlx*.i386.rpm net-snmp-utils-*rlx*.i386.rpm bootctl-*rlx*.i386.rpm atftp-*rlx*.i386.rpm lm_sensors-*-*rlx*.i386.rpm lm_sensors-drivers-*-*rlx*.i386.rpm lm_sensors-devel-*-*rlx*.i386.rpm base-utils-*rlx*.i386.rpm runctl-*rlx*.noarch.rpm networkcfg-*rlx*.noarch.rpm mgmtmode-*rlx*.noarch.rpm namedcfg-*rlx*.noarch.rpm dhcpdcfg-*rlx*.noarch.rpm lilo-*rlx*.i386.rpm grub-*rlx*.i386.rpm rlx-clientpm-*rlx*.i386.rpm This e-mail (including any attachments) may contain privileged, confidential, proprietary, private, copyrighted, or other legally protected information. The information is intended to be for the use of the individual or entity designated above. If you are not the intended recipient (even if the e-mail address above is yours), please notify us by return e-mail immediately, and delete the message and any attachments. Any disclosure, reproduction, distribution or other use of this message or any attachments by an individual or entity other than the intended recipient is prohibited.

4 years, 9 months

TeleCompaq Disks

by tyl3rhay3s＠gmail.com

Hello there! Has anyone here had the TeleCompaq setup disks imaged? I see that there are a few in the CHM's possession, but besides that, no images. If so can you please send me the image files? Thanks, Tyler Hayes

4 years, 9 months

Lecture: How I ported Space Invaders to a video game console from 1978, 2021-07-10, 19:00

by stueberahoo＠yahoo.de

Hi all, you're invited to the Update computer club[0] public lecture series "Updateringar"[1]! Update is a Swedish computer club founded in 1983 whose members tinker with all kinds of computers, from Raspberry Pi to PDP-12. The club has a big collection of historic computers. In this lecture series we'll talk about everything related to computers: Historic and modern computers, operating systems, programming, hardware projects, creating art with computers, building a computer museum, and more. When: 2021-07-10, 19:00 CEST Where: https://bbb.cryptoparty.se/b/upd-0mo-m2u-aq8 How I ported Space Invaders to a video game console from 1978 Bjarni walks us through his recent port of the arcade classic to the Philips Videopac, a second-generation video game console. He explains the hardware limitations and shows tricks used to get around them ? unlike in the arcade machine there is no frame buffer, and the functionality of the hardware sprites is severely constrained on the Videopac. The development of the port was done on real hardware with a home-made USB-connected game cartridge. Bjarni Juliusson (Update) The lecture is free and open to everyone. Upcoming: 2021-08-14, 19:00: The Whirlwind I. Angelo Papenhoff (Humboldt University of Berlin) Hope to see you there, Anke [0] http://www.update.uu.se/index_eng.html [1] https://www.update.uu.se/wiki/doku.php/projekt:updateringar

4 years, 9 months

FTGH for pickup in So Cal: PDP-11/44, Macs, Atari ST, RiscPC, ...

by spectre＠floodgap.com

Well, the pandemic turns everything upside down and we're looking at new employment, a new place and probably having to slash a few things. First on the chopping block is to consolidate and downsize storage. These systems and peripherals are all free to a good home; all you have to do is pick them up. Pick up any and all, with priority given to those who are interested in multiple units. I've tried to describe them as completely as possible. A few items have "on your honour" conditions. I'm also giving priority to classiccmp readers before I post public elsewhere. The items are in various places over the Riverside-San Bernardino area in Southern California depending on where and when I acquired them, so send me an off-list E-mail and we'll figure it out based on their location. THESE ITEMS NEED TO BE GONE IN THE NEXT MONTH. If you need a little extra time, we can work something out; I'd rather not scrap what someone has an interest in, but obviously with a likely move approaching, the sooner the better. =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= POSSIBLY WORKING: PDP-11/44 with at least four disk packs and lots of paper tape and 8" floppies, sitting on top of what I think is a TU58. I never got the chance to fire it on. You will need a truck, probably a cart and definitely a hernia belt. There is also a big Kennedy disk next to it but I don't know if they originally went together. POSSIBLY WORKING: DEC VT100. This got bashed around a little and the case is a little loose, and I don't know if it works, but it's an honest to Ford VT100. NOT WORKING: Alpha Micro S-100 system. I got this when I had more money with the intention of rehabilitating it when I had more time, and now I have less of both. It will work for other S-100 cards. Whatever cards and devices are in there are all yours. They are heavy steel drawers and it can take big cards. There are two boxes; please take both. NOT WORKING: Acorn RiscPC 700 and Castle Iyonix PC. Like the AM S-100 system, I got this when I had more money but not enough time, and now I have neither. They need specialist restoration as neither system powers on, and it doesn't appear to be (just) the PSU. In particular, the RiscPC came to me with a leaky board battery which may have something to do with it. Both systems appear heavily upgraded but I don't have any inventory. If you are interested, it is expected you will be restoring the systems and not just turning around to part them out; there aren't that many of these machines on this side of the Atlantic (on your honour). Please take both units; you will get a big box of software and RiscPC artifacts from the previous owner as well. WORKING: Snow iMac G3 (600MHz, 512MB RAM). Works fine, comes up in stock 10.3.9. Needs a new PRAM battery but in good shape otherwise. Add your own USB keyboard and mouse. This was a gift from a good buddy, so it goes to you with the understanding you will try to find it a home if you don't want it instead of trying to sell it (on your honour). Everyone should have the joy of an original iMac. NOT WORKING: Atari STacy, disassembled. I was working on the system to replace the hard disk and one of the power headers got shifted which put 12V on a 5V line. Guaranteed this liberated some magic smoke from the motherboard or a yet-to-be-detected fuse somewhere, but the keyboard, RAM card, screen and such were all functional at the time I effed up and probably still are. You will get it in a fabulous Office Depot box with "STacy" written on it using a half-dead Sharpie. POSSIBLY WORKING: Mega ST4 with Megafile 60 and SC1224 and SM125 monitors. These are a bit yellowed and the keyboard is thrashed. Also, the TOS is on a separate card with two leads that got loose and I don't know where they go (probably to +Vcc and a select pin). Thus, can't test the monitors or the hard disk, but the system does power on, and the hard disk does power up and makes happy hard disk noises. No idea what's on it. The SM125 puts on a power light and does appear to try to make a picture, though its previous owner separated it from its stand for some reason. The SC1224 sounds like the flyback is bad but may be serviceable. Includes ST mouse and hard disk cable. No manuals or software. If you want this unit, you need to take everything including the monitors. NOT WORKING: Breadbox NTSC Commodore 64, in original box with power supply. Last time I powered it up, it generated a garbled display that suggested either bad RAM or PLA. You get to find out. PROBABLY WORKING: Tandy Color Computer 2, in original box. Was working when stored. PARTIALLY WORKING: Quad G5 2.5GHz x2x2, 8GB RAM, Nvidia 6600. Got whacked in shipping and one side of the case is damaged. No hard disk. Does power on and starts Apple Service Diagnostics fine, but the fans roar like the MGM lion and while there is no obvious leak you will need to service the liquid cooling system -- you're not thermal calibrating your way out of this one. Has the wireless card. Aftermarket optical drive needs "help" when you eject it. Add your own USB keyboard and mouse. NOT WORKING: Macintosh SE/30 (marked "Lake Washington"). 8MB RAM. Powers on and bright display on the monitor but Simasimacs immediately. Probably fine with a recap. Case yellowed as hell. I think I removed the hard disk, but if not, hey, free hard disk. Add your own ADB keyboard and mouse. NOT WORKING: Macintosh SE/30 (marked "Clover Park"). Also used to be my file server but then Simasimaced and now doesn't put a picture on the screen at all. Undoubtedly needs a recap and may need other repairs based on the funny pulsing of the system fan when connected to power. I think it had 4MB of RAM, don't recall exactly. I think I removed the hard disk, but if not, hey, free hard disk. Add your own ADB keyboard and mouse. PARTIALLY WORKING: Sawtooth Power Mac G4 450MHz. No RAM, no video card, no hard disk. Used to be my file server but had issues with one of the PCI slots. Has optical drive and ZIP with matching Apple bezels. Does power on, but obviously without RAM or a video card (AGP) will not pass POST. Add your own USB keyboard and mouse. NOT WORKING: Quad G5 2.5GHz x2x2, 16GB RAM, Nvidia 6600. This is in better physical condition and does power on and bong but shortly afterwards puts on OVERTEMP and CHECKSTOP lights, so you definitely will have to service the LCS and possibly the processors (no obvious leaks but I haven't checked thoroughly). No wireless card, no hard disk, OEM optical drive, add your own USB keyboard and mouse. NOT WORKING: Single G5 1.8GHz, 2GB RAM, GeForce 5200. The previous owner seemed to have had a disagreement with the front panel connector and the front panel connector lost. I received it stripped to the chassis except for the processor and the logic board, but it does have the fans, video card, wireless (with T-antenna), power supply and panel cable. Because the front panel connector is busted I can't test it. You get to replace the front panel assembly and put it back together. This unit is air-cooled, but probably could benefit from reapplying thermal compound while you're at it. Has optical drive (disconnected), no hard disk, add your own USB keyboard and mouse. Various other items: Newtek Video Toaster 4000 and Video Toaster Flyer boards with a whole mess of cables (looks like SCSI and some other internal pin header-type). Don't know if these are complete and no way to test. No software. Apple II Super Serial card with DB-25 670-0020-? (uses 6551 ACIA) and Apple IIe 80 column 64K memory expansion 607-0103-K. Can't test them but both look intact. Kurta Penmouse. Serial and PS/2 connectors. Seems to have a power supply jack (9V) but I don't have the power supply and I don't know if it needs it. Can't test it, no drivers, physically intact. Sun model 411 SCSI CD-ROM. Requires caddy. Won't mount discs, might need a recap. UMAX Astra 2100U flatbed USB scanner with power supply. Powers on. Works with classic Mac OS but probably most systems. No driver disc. Pair of Telular SX5 GSM terminals. These were the server room's backup communication system. They work, but no GSM network to connect to anymore. Might be fun if you set one up. Real serial ports! Real GSM modem! Full kits with power supply. Visual UpTime Select T1 CSU/DSU. Has a Cisco V.35 cable connected and jacks for Ethernet, serial, DSX-1 and T1. Powers on, obviously goes right into Red Alarm since there's no network. You telco nerds will love it. Various complete external modem packages ranging from 14.4 to 33.6K. -- ------------------------------------ personal: http://www.cameronkaiser.com/ -- Cameron Kaiser * Floodgap Systems * www.floodgap.com * ckaiser at floodgap.com -- The cost of living has not adversely affected its popularity. --------------

4 years, 9 months

Atari ST & MegaFile with Minix?

by bear＠typewritten.org

I was playing with ST Minix (v1.1, based on PC Minix v1.3). I didn?t have any luck with Minix (neither the boot program nor the kernel) detecting the MegaFile (60 or 30, both the same outcome) on the Mega 4. Both MegaFiles worked fine with Minix on the 1040ST. So there must be some difference (timing?) between the ST and Mega. There are some usenet posts speculating on the cause of this, as well as contradictory user reports on whether it is known to work or not. So I?m not sure what to make of this. But Minix is pretty tight in 1 MB RAM, so I would like to understand why it shouldn?t work on the Mega 4. Any Atari ST experts on the list who can shed any light on why this might be the case? ok bear.

4 years, 9 months

First new vax in ...30 years? :-)

by abs＠absd.org

In case anyone was interested in an FPGA VAX implementation http://mail-index.netbsd.org/port-vax/2021/07/03/msg003899.html And/or thoughts on 64bit/FP & multiprocessor enhancements :-p http://mail-index.netbsd.org/port-vax/2021/07/03/msg003903.html David

4 years, 9 months

Free punched card deck machine, suitable to make reader and punch

by carlclaunch51＠gmail.com

I bought this years ago for a planned project to create a card reader and card punch for a mainframe replica, using this machine that was designed to reproduce decks of punched cards. It is very heavy and sturdy. It has two input hoppers and two stackers, one for the source cards and one for the punched copies. The punched head is cooled by ammonia gas, indicating that it was designed to operate at a healthy rate of cards per minute if it needed that kind of cooling. A keypunch, by comparison can punch cards at about 20 cpm with no need for cooling, so I estimate this could run at hundreds of CPM. This is ideal for a hobbyist would would convert it so that it reads cards into some kind of mini, mainframe or other computer device, with the other side able to punch contents from the same computer onto blank cards. This works with the standard IBM '5081' style 80 column punched cards. I am moving in 12 days and would need to send this to the scrap yard if someone isn't interested. I can hold it here until July 12th or 13th latest. You will need to bring help to move it as it weighs a few hundred pounds. Pictures at - https://sfbay.craigslist.org/pen/sys/d/los-altos-free-punched-card-reader-p…

4 years, 9 months

VT340 Emulation

by dj.taylor4＠comcast.net

Does anyone have experience with the Reflection software that will emulate a DEC VT340 color graphics terminal?

4 years, 9 months

PDP-11/05 microcode dump?

by jnc＠mercury.lcs.mit.edu

> From: Mattis Lind > Thanks Noel for sorting this out. Eh, de nada. But thank you. >> I wonder if the ucode in the two versions is identical? The uROM chip >> numbers should give it, (if they are the same on both versions, albeit >> in different locations on the board), but I have yet to check. Does >> anyone happen to know? OK, so the situation here is pretty complicated. To start with / make things worse, that CPU uses lots of PROMs. Lots and lots and lots and lots of PROMs. For the data paths board (M7260), both major versions appear to contain the same PROMs (going by the DEC part numbers), but the chip location (Exx) numbers are all different. For the control board (M7261), the C, E ('early' version) and F ('late' version) etch revisions each contain mostly the same PROMs, but apparently with slight differences between the sets of PROMs in each (as reflected in different DEC part numbers). For details see: http://gunkies.org/wiki/PDP-11/05#Control_PROMs to which I have just added all the gory details. As to getting the contents of all of them dumped in machine-readable form - oi vey! >> on the earlier version (prints for that version are in the GT40 prints >> online It turns out that I have hard-copy prints for the "C" etch revision of the M7261, which do not yet appear to be online; the GT40 prints have the "E" etch revision. I will scan the pages for that revision of the board, and put them up 'soon'. (I'm not doing the whole print set, it's about 1" thick, and most of them are for other things anyway, like MM11-L memory, etc.) Noel

4 years, 9 months

cctech Digest, Vol 81, Issue 26

by aek＠bitsavers.org

On 6/29/21 10:00 AM, cctech-request at classiccmp.org wrote: > I miss that machine. I'd love to sim it but the code and schematics are > gone forever. Actually I think CHM has a box of stuff but I can't find a > link to it anymore. > another case where I watch cctalk, and this showed up only in cctech so I only saw it today since I only get digests of cctech https://www.computerhistory.org/collections/search/?s=adage some has been scanned http://bitsavers.org/pdf/adage

4 years, 9 months

Konan The DJ 210 SASI Controller Manual

by billdegnan＠gmail.com

I noticed that there is no copy on bitsavers of the Konan Corp "The DJ 210" SASI Controller OEM Reference Manual so I posted one on my web site: https://www.vintagecomputer.net/cisc367/Konan_The_DJ_210_SASI.pdf I am not 100% sure, but if I was to guess this info could be applied to repairs for Tandy's and other 5MB hard drives of the era that used the ST506/412 and maybe the Tandon 603S (?) You be the judge, I am not an expert. Bill kennettclassic.com

4 years, 9 months

Interesting photos of a computer graphics lab from 1968

by spam＠hell.org

A friend of mine collects old photos, and sent me a link to this set he just recovered from film. He doesn't know much about the provenance, but it might be interesting to figure out what we can about them. The link is here: https://www.espressobuzz.net/Found/GeorgeClark/GraphicsLab/ The film roll was dated June 1968, which was a month before I was born. The most interesting (to me) is the photo of the Adage Graphics Terminal. I'd never heard of the company before, but it looks like they were one of the many tech companies that sprang up in the MIT & Harvard orbit in the 60s and 70s. There's a small amount of info about the company on Wikipedia: https://en.wikipedia.org/wiki/Adage,_Inc. Also in the same photo, to the right of the terminal is a silver box that might be an early joystick. It's hard to say. The pictures of the graphics terminal output is pretty cool, given that it's probably really pushing state of the art at the time. Also, they're in color, which was still not terribly common at the time. The only few photos I was able to find of Adage terminals are all black and white. Other recognizable hardware are a couple of ASR33 teletypes (one of which was rebadged as Adage), and some tape drives, the manufacture I don't recognize. Everything else, I pretty much can't make out what any of it is, but perhaps someone recognizes the particular layout of the blinkinlights? He was told that the pictures were taken "somewhere in the northeast". I suspect Boston, and therefore probably MIT or maybe Harvard. On the same roll were some pictures of "a colonial ship with lots of cannons", which I suspect was the USS Constitution in Boston Harbor, but I haven't seen those pics yet. I wonder if the tile pattern on the floor is distinct enough or recognizable? Anyway, it's an interesting set of archival photos, and I figured someone here might find them interesting or might recognize more than I do. -mike

4 years, 9 months

Fwd: Lawrence Moser Breed 1940-2021, A Personal Recollection

by lee_courtney＠acm.org

Sad computer history note - Larry Breed, one of the original implementors of Iverson Notation AKA A Programming Language AKA APL passed away last month. Larry went to work at IBM on the first APL implementation on an IBM 7090 in 1965 as his first job out of Stanford. My path crossed Larry's not thru APL, but when I was working my first retirement job at Hassett Hardware in downtown Palo Alto. Larry would come in to buy parts for his latest Burning Man or community project. He was a delightful person to talk with, learn something from, and just be around. I'm sorry I did not take the time to talk to him more about APL when I had the chance. There's a Wikipedia entry on Larry here (https://en.wikipedia.org/wiki/Lawrence_M._Breed) and remembrances of him on the apl.comp.lang mailing list. God speed Larry and RIP. Lee Courtney

4 years, 9 months

Serial Multisession

by cctalk＠gtaylor.tnetconsulting.net

Does anyone know anything about the "Serial Multisession" that the VT LAN 40, and presumably other terminals, supports? I've not heard about it before and intend to do some research. But I figured that it was an interesting enough topic, that is multiplexing terminal sessions over a single serial link, to warrant further discussion. -- Grant. . . . unix || die

4 years, 9 months

INFAPLUG LAN

by binarydinosaurs＠gmail.com

Hello folks, A random conversation on twitter yesterday lead me to discovering an old 1980s LAN technology called INFAPLUG. This was a serial LAN hooked up via a PC serial port at 9600 baud to a ?smart plug? the size of a wall wart. This plug contained all the smarts and hooked into the coax backbone. There were boards available for VAX amongst other things so I?m amazed I?d never heard of it. Has anyone else? A small writeup is here: https://archive.org/details/lansexplainedgui00curr/page/64/mode/2up?q=infap… <https://archive.org/details/lansexplainedgui00curr/page/64/mode/2up?q=infap…> Cheers! -- Adrian Graham Owner of Binary Dinosaurs, the UK's biggest private home computer collection? t: @binarydinosaurs f: facebook.com/binarydinosaurs w: www.binarydinosaurs.co.uk

4 years, 9 months

On compiling. (Was a way off topic subject)

by sieler＠allegro.com

Paul K got it right: "Any language can be interpreted or compiled. For some languages, like LISP and TECO, interpreting is a rather natural implementation techniques, while for others (C, ALGOL) compilation is the obvious answer. But either is possible." A few quick notes... Back around 1973, I wrote a compiler for InterLISP on the Burroughs B6700, with the target code being a new P-code invented just for LISP (by, I think, Bill Gord, based on Peter Deutsch and Ken Bowles P-code work). Yeah, some parts of the P-code machine had to invoke the interpreter, but that's philosophically no different than the next note... Around 1977/1978, Hewlett-Packard released the source code for their COBOL compiler for the HP 3000. My friend looked at the source and said: every statement compiles into a bunch of subroutine calls! So, technically....it was a compiler. But, essentially no machine code was emitted :) In 1984, HP announced their PA-RISC systems (HP 3000 and HP 9000), and that their ALGOL-like language, SPL, used by them and customers on the HP 3000, would not be ported to PA-RISC (because "it wasn't possible"). We looked at it and said: we can. And, we did (without the "subroutine call" mechanism :) In some cases, we emulate a 16-bit wide CISC architecture (e.g., if you use the SPL construct "ASSEMBLE (...)", we compile it...into PA-RISC code emulating the old architecture). It's still in use today, and can now emit either PA-RISC code or C source code (for a form of cross-compiling). What HP missed, and many people miss, is that any language can be compiled. The main question one might ask is the degree of closeness to machine code that's emitted :) Stan

4 years, 9 months

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