test-drb December 2004

test-drb@ccmp.vtda.org

243 participants
530 discussions

by wrm＠ccii.co.za

Hiya >Three boards which I expect are from an SwTPc. Each bears the SwTPc >logo somewhere in the component-side etch. Well, that's easy then :-) >One I feel sure is a CPU board. It bears many DIPs, all socketed (and >all sockets populated), a 7805 and four discrete transistors or similar >devices soldered in, and miscellanous two-terminal devices (resistors, >caps, a crystal, maybe some others I don't recognize). The "big chip" >is an MC6800P; I also see an HM46810P, an MC14411P, and a chip labeled >with the motorola logo and the text "SWTBUG 1.0" and a "7748" which I >imagine is a datecode. Everything else is in the 8- to 20-pin range. >On the card edge is a 50-pin single-row connector with slightly over >2.5 pins to the centimetre, with one pin space filled with plastic. Yup, it's a CPU all right. SS-50 bus. >Next to the SwTPc logo is the text "MP-M". I suspect the 7805s are >intended to have heatsinks which the board has been robbed of, probably >at the same time as the socketed chips were removed. This has a >card-edge connector apparently identical to that on the CPU board (just >above). Yup, memory board. >A board which I feel sure is memory. It's marked "MP-8M2" and has a >SPDT switch with the positions marked "WRT. PROTECT" and "NORMAL"; next >to one row of 8 DIPs is "UPPER 4K" and next to another is "LOWER 4K". >It also has two 7805s, each driving power to some of the chips - their >outputs aren't wired together. There is also a DIP bank of four >switches. Yup, more memory. The 30-pin card is an I/O card for the same box. The motherboard ran the SS-50 bus, plus a decoder to eight SS-30 I/O sites, mem mapped of course. http://www.retro.co.za/6809/documents/ct-apr81.pdf W

20 years, 7 months

Free DEC/mini stuff in Washington DC area

by shoppa_classiccmp＠trailing-edge.com

>> for free, you must pick up > No shipping? Right, I just don't have the time. I'm starting to think that by insisting that no money can change hands that as a result there are fewer interested. Single vintage chips go for multi-hundred dollars on E-bay and get talked about here a lot, then I go and try to give away a quarter-ton of hardware and software for free and get ignored :-). Tim.

20 years, 7 months

5-1/4' drive on modern PC

by r_a_feldman＠hotmail.com

I've been wading through a lot of digests, catching up with the list, so this post is a bit late in the thread. One thing to watch out with on recent PC's is that the BIOS might not support more than one floppy drive. I found that out on a SOYO motherboard I got last year. The BIOS can handle 360KB and 1.2 MB 5 1/4" drives, as well as 3.5" drives, but you can have only one drive attached at a time. Bob

20 years, 7 months

KM11 clone

by ggs＠shiresoft.com

I've been working on creating a clone of DEC's maintenance panel (KM11) for some time now. I intended it to be used as my "hello world" board to get familiar with EagleCAD and the board fab process. On Friday my first boards arrived from the fab house. I spent this weekend building up 2 boards and both worked perfectly the first time. It was so cool to be able to single step the microcode in an 11/40! It's up on my web site (http://www.shiresoft.com/pdp-11/boards/index.html) for those that want to see what it looks like. Sometime this week I'll take a picture of the 11/40 with 2 KM11's hanging out of it! My first batch of boards/parts has already been spoken for. But for any who are interested, I'll place another order for parts/boards for delivery sometime in January. Each board will come with complete schematics, parts list and assembly instructions. I will also have collected drawings for the overlays and instructions on use for the various processors (11/20, 11/05, 11/40, 11/45 and 11/70). I'm pricing as follows: "Bare" Board $75 "kit" (includes all the parts) $125 assembled and tested $250 (I really don't want to) -- TTFN - Guy

20 years, 7 months

hardware fault on SGI Indigo?

by pete＠dunnington.u-net.com

On Nov 24 2004, 17:30, Fabian H?nsel wrote: > I have an old SGI Indigo (IP12) which refuses my attempts to populate > the harddisk with Irix 5.3. The harddisk doesn't boot, so I assume it to > be empty. > > I get sashIP12 and fx.IP12 to load from cd, but using fx with that hd fails: > > SGI Version 5.3 IP12 Oct 31, 1994 > fx: "device-name"= (dksc) > fx: ctrl#= (0) > fx: drive#= (1) > ... opening dksc(0,1,) > dks0d1s10: Drive not ready: RAM failure, ASQ=0x80. > fx: warning: Failed to open dksc(0,1,10) > SGI Version 5.3 IP12 Oct 31, 1994 > > (and the same again, if I want) > > Is it trying to open a non-existent partition dks0d1s10? Is it a > software-fault? If it's a hardware fault: What's broken: hd or ram? That looks like a faulty drive. Does it spin up? fx is trying to read the status from the drive, and getting a message to say that the drive has an error and is "not ready". "Not ready" means either not spinning, or not able to initialise itself for some other reason, like a fault in the drive's own RAM). If it were just because the drive isn't set for auto-spinup, fx would issue a spinup command, so it would seem in this case there is some other drive problem. dks0d1s10 is the first disk (dk) unit (d1), on the first SCSI controller (s0), partition 10. Partition 10 is "the whole of the disk". Once the disk has an SGI label structure written to it, things will be able to find the volume header, but initially fx just accesses "the whole disk", ie ignoring any partition table (since such things are OS-dependant). > The hd is in the bottom drive bay. After my enter keystroke in line 4 > (drive#=1) the led flashes for a short time and at the same time (or > maybe some millisecconds later) the error message appears. As you probably know, the SCSI ID is automatically determined by the bay you put the drive in. At least, it is if you use standard sleds, which have a connection from the ID pins on the drive, via the sled connector, to the backplane. A few (genuine SGI) sleds have a selector switch instead. The flash from the LED is the drive responding to the command sent by fx to read the status from the drive, so the chances are that the drive is being correctly addressed. If its address was mis-jumpered, which can happen if you didn't connect the drive ID jumpers to the sled, it either wouldn't respond, or would respond to address 0 (which is the Indigo's SCSI controller's address) which would cause different problems. -- Pete Peter Turnbull Network Manager University of York

20 years, 7 months

Wanted: TI-99/4A Solid State thermal printer - PHP1900

by tosteve＠yahoo.com

Hello, Anyone have one of they are willing to trade or part with? Thanks- Steve. __________________________________ Do you Yahoo!? Take Yahoo! Mail with you! Get it on your mobile phone. http://mobile.yahoo.com/maildemo

20 years, 7 months

Irix-Install on SGI Indigo: RAM failure, ASQ=0x80

by pete＠dunnington.u-net.com

On Dec 11 2004, 18:06, Fabian H?nsel wrote: > Jules Richardson wrote: > >of our Indigos have 450MB drives, so they don't need anything > >particularly big. > > > I'll take a big one to install nearly all packages available on the cds, > as the cd drive isn't my own one. I have 1GB drives in most of my Indigos, but they NFS-mount /usr/local with lots of locally-compiled stuff, and /usr/people with home directories, from another machine. BTW, if you're looking for packages, there are still a few sites with packages for 5.3 (is this an R3000 Indigo?) and I have quite a few that I've compiled here. You can even get the IDO (Irix Development Option, ie the compilers) for free from SGI's website -- and it's significantly better than gcc. You can also still get all the patches from SGI (there's a LOT -- I know because I just re-installed all the Y2K and security patches for one of my machines). But remember that for an R3000 you need things compiled -mips1, not -mips2 (which some 5.3 systems default to) or mips3/4 (later versions of IRIX). -- Pete Peter Turnbull Network Manager University of York

20 years, 7 months

hardware fault on SGI Indigo?

by pete＠dunnington.u-net.com

On Dec 11 2004, 17:58, Fabian H?nsel wrote: > Pete Turnbull wrote: > >As you probably know, the SCSI ID is automatically determined by the > >bay you put the drive in. At least, it is if you use standard sleds, > >which have a connection from the ID pins on the drive, via the sled > >connector, to the backplane. > > > My drive has a 50 pin scsi, a 4 pin power supply and a 10 pin cable (I > did not know what it is used to) - that connects to those ID pins, > doesn't it? A new drive does not have to have such ID pins, as long as I > can set the scsi id with jumpers, is that right? Yes, that's right, just remember what you set it to, because (obviously!) it will no longer be automatically set by the slot. Don't use ID 0, because that's the controller. By convention, the boot drive is ID 1, a CDROM is 5 or 6, a tape is usually 4, but you needn't stick to those. IRIX will work out what type of device (disk, removable disk, CDROM, tape) is at each ID. You can change the drive ID that's used for booting, by changing a couple of PROM variables. On my Indy here (sorry, haven't got an Indigo handy that I can power up, but it should be very similar) they are (these viewed from IRIX rather than >from the PROM): SystemPartition=scsi(0)disk(1)rdisk(0)partition(8) OSLoadPartition=scsi(0)disk(1)rdisk(0)partition(0) NB they are case-sensitive. -- Pete Peter Turnbull Network Manager University of York

20 years, 7 months

What the Lady has in her collection

by Ladyelec＠aol.com

I am on digest and a bit behind. I am a journeyman electrician due to health reasons had to close my business of 16 years. I started collecting because I was trying to find a way to make money that corresponds with my body which only gives me about 4 to 5 good working hours a day and a friend of mine on the net suggested ebay seller. Good idea, I can combine my love of garage sale shopping and junk shopping and make some cash to boot. What started my vintage computer collection was one day I found a Compaq Lunchbox computer and had it sitting on the floor when some of my many nephews (hubby is one of 24, 19 currently living) came by and wanted to know what it was. I told them a computer and they said no--it's a sewing machine. I set it up and showed them how it worked. They were fascinated by the monochrome monitor! LOL It's like explaining that if it were not for Pong and Atari they wouldn't have Playstation and X-Box. I am also a crafter so due to limited space I collect the Ladylike dainty computers that I can pick up. I currently have: Compaq II and an III Portable Tandy 1000 HX Sr. Partner Panasonic Portable Timex Sinclair 1000 in box with marked Styrofoam IBM PS/1 Apple IIe and an SE Zenith Data System Laptop Atari and the works all on original in boxes with Styrofoam. Commodore HP -87 Digi-Comp II that I have not even had the time to mess with yet. A small yet growing collection. I have more fun on "THE HUNT" than I anything else. Second most fun is showing the youngsters where computers have come from. I also have started a "Tech" signature collection. I have: Patrick Norton signed PIC Michael Garfield the High Tech Texan signed PIC Michael Nadeau signed book I need to see if I can get the good looking TV star, magnificent,hairy, intelligent, smooth, ever so popular International Man of Intrigue and Danger , Sellam Ismail to sign a book or picture or something for me. If I had not seen him on TechTV I would have never found this list. I am a firm believer if you want to have an interest in something--READ! Educate yourself! I have learned a lot from ya'll and even enjoy off-topic stuff cuz ya'll can get to be down right a hoot at times. I think I have been on the list for close to a year now. I am old and don't remember well. I am going to find me a dadburn Apple 1 if it kills me. I know there are only a few but one of them has MY name on it! Just a beginner, Back to lurking, Isa

20 years, 7 months

TTYs for the deaf

by msokolov＠ivan.Harhan.ORG

Fred Cisin <cisin(a)xenosoft.com> wrote: > Do you know of any timesharing host or BBS that is compatible with TTY? Sure, any PDP-11 or VAX UNIX timesharing host with a Bell 103 modem attached to one of its RS-232 ports will happily accept calls from an ASR33 TTY. It's a pity that the deaf TTYs are 5-bit rather than ASCII. The reason for my question had to do with my campaign to get the few people I care about to switch from PeeCees to timesharing computing, i.e., instead of using a PeeCee, paying for Internet service, etc., get an account on my VAX and dial into it from a Teletype. One of the problems is of course that no one has Teletypes any more. I was wondering if the deaf ones could be used, as in the current horrible state of the world it seems like Teletypes are now only used by the disabled, rather than by 100% bodily abled people who are more intelligent than the masses and want to use timesharing UNIX (or VMS or RSX or TENEX or ...) instead of a pee sea. BTW, has there ever been a Teletype model that did 300 baud instead of 110? Perhaps Model 35 or 37? My Courier V.Everything modems are great, and they can go down to Bell 103 or V.21, but to my knowledge they do not have an asynchronous pass-thru mode between the RS-232 TxD/RxD lines and the Bell 103 FSK modulator/demodulator, it always has to go through the modem's internal buffers, which requires it to know the baud rate, and as a result it can only operate at 300 baud with Bell 103 / V.21, even though this modulation scheme is in fact asynchronous and baud rate-oblivious for the range 0-300 baud. The end result is that they can't answer 110 baud calls >from ASR33s. Bummer. MS

20 years, 7 months

3 Mil Spec Novas?

by pcw＠mesanet.com

But maybe ony the front panels... http://cgi.govliquidation.com/auction/view?id=500266&convertTo=USD And heres a nice picture of the front panel: http://www.simulogics.com/nostalgia/Rolm/Rolm02_01.jpg Peter Wallace

20 years, 7 months

Grid 1520

by pete＠dunnington.u-net.com

On Dec 12 2004, 17:58, Philip Pemberton wrote: > In message <f16f6cf804121209392fa82ab3(a)mail.gmail.com> > Brian Mahoney <mapleleafman(a)gmail.com> wrote: > > > Tandy used roms in some > > of their models, didn't they? I mean to store applications. Acorn too, > > I think. Yes, the BBC Micro (and 8-bit successors) couyld use "Sideways ROMs", ie ROMs mapped into the same address space as BASIC, and switched in and out by the O.S. Archimedes (32-bit) machines and successors could have ROMs on expansion cards (eg an Ethernet card might contain the card drivers and TCP/IP stack). > Sounds like you're referring to the "5th Column ROM". All the Acorn machines > I've seen have RISC OS in ROM anyway (No HDD? No problem!), though. > The 5th Column ROM socket was - IIRC - fitted to all the Acorn A-series > machines up to the A5000. I don't think there was much that ever used it. There's no "5th Column ROM socket". Even the term is a invention of someone outside Acorn. What they mean are simply Extension ROMs on expansion cards, which contain relocatable OS modules which get copied into RAM when the machine is booted. (It has to be, most ROMs are only 8 bits wide, but the memory bus is 32 bits. Obviously you could use four ROMs, but I never heard of anyone doing so, although the spec does allow for it.) Almost all Ethernet cards, several SCSI cards, scanner cards, and several others, use them. The only one I know of that could contain application software that wasn't tightly bound to some interface on the same card, was Computer Concepts card for Inter<whatever>, which was a bit of a flop. It was only useful for the BBC Emulator, and the code still had to be copied to RAM to be accessed. -- Pete Peter Turnbull Network Manager University of York

20 years, 7 months

Got a HP 2648. Now what?

by rigdonj＠cfl.rr.com

Actually I picked up two of them. They're HP graphics terminals with dual tape drives. One of these has a HP-IB port in it. What's that for? They're both marked that they have options 007 and 032. Anybody know what those are? Anyboy have a pointer to a manual for them. Also spotted a rack mount box that's marked HP 5478C. I looked through a bunch of HP catalogs but couldn't find it in any of them. Does anyone know what it is? The front of it is blank except for three LEDS marked power(?), Trigger and DAC so I'm guessing that it's some kind of D/A unit but it's darned big for that. Joe

20 years, 7 months

Got a HP 2648. Now what? Now women on list? Now worst computer related injury

by peterbrown10＠hotmail.com

Hi Sellam and all, >I think my worst computer related injury is a recurring one: I keep >bumping my kneecaps on monitors that are sitting on the ground. I took an HP 9122D to the head once - kinda fell off a high shelf where I was working Blood, swearing and confusion but no stiches.... Anyone with one that involves stiching and / or an ER? Peter PS: for those of you who're worried, the drive was fine - built HP tough...

20 years, 7 months

Free DEC/mini stuff in Washington DC area

by shoppa_classiccmp＠trailing-edge.com

Still available, for free, you must pick up in the Washington DC suburbs: 1. "Double" BA23 with all associated rack-mount hardware and double- high bulkhead panel in the back. 2. Several Trimm Industries 5.25" high rack-mount SCSI enclosures, styling is very similar to BA23's, and takes DEC skid plates. 3. Several dozen assorted Unibus and Q-bus boards. 4. Fujitsu M2444 Pertec interface 1600/6250 bpi 9-track drive. 5. Several hundred pounds of DEC VAX/VMS, Alpha/VMS, and Ultrix condists. Mostly early/mid/late 90's, some from the past 4 years too, and a few VAX and Alpha VMS installation CD's. Many dupes, especially of the mid-90's VAX/VMS stuff. I will let you sort through the piles if you don't want to take dupes, but I will not let you take "just the new stuff", for every post-2000 condist I'm gonna make sure you take away at least ten mid-90's ones! And as always, if you show up for any of this stuff, I will try to make you take away some other things too :-). First-come, first-served. None of the items are availble for shipping, I just do not have the time to box them up in any reasonable manner. All of it probably would fit in a station wagon or larger car. (The only thing really bulky is the M2444, which is a rather deep, high, and wide rectangle, but even that will fit in the trunk of a large car.) If interested, E-mail me at "shoppa(a)trailing-edge.com". Pick-up times on weekday evenings and weekends are available. Tim. (shoppa(a)trailing-edge.com)

20 years, 7 months

Free DEC/mini stuff in Washington DC area

by shoppa_classiccmp＠trailing-edge.com

20 years, 7 months

TTYs for the deaf

by msokolov＠ivan.Harhan.ORG

Fred Cisin <cisin(a)xenosoft.com> wrote: > the ASR33 TTY is Bell 103 at 300 baud? That's what I've always thought, anyone who knows otherwise please correct me. > "MODERN" modems that will do Bell 103, will often only do it at 300 baud. Yes, that's what I wrote in my previous post. My question about 300 baud Teletypes went unanswered though. I do, however, have a few TI Silent 700s. These are absolutely lovely 300 baud portable terminals, small and portable enough to compete with modern laptops, and even though they weren't made by Teletype, I think of them as portable teletypes. There were two versions: 703 with RS-232 interface and 707 with a built-in Bell 103 modem. My only 703 doesn't work (the printhead moves but prints nothing), but my 707s work great, and I do in fact travel with one to UFO conferences, etc. I will be celebrating New Year at Butterfly Lounge (www.butterflylounge.com), and I might post here from my hotel room from a TI 707 dialing into ivan.Harhan.ORG at 300 baud! (And yes, I have the same taste in women as in computers: I like them both BIG!) > surely SOMEBODY knows how to write a look-up table program to translate! Of course it's possible, it's just totally non-standard, and most importantly, UNIX generally expects the user to have the complete ASCII set available to him. The V7 tty driver has support for turning an uppercase-only tty like ASR33 into a terminal with both cases in software, but emulating full ASCII from the 5-bit TDD code seems like a bit of a stretch. > TDDs are more expensive, and do not have a 24 x 80 screen. > They typically have a single line display, and sometimes an > adding machine width printer. > > For what kind of applications would you consider that interface connected > to a timesharing system to be more usable than a personal computer, > or a 24 x 80 screen terminal? None. I didn't realise that TDDs were that bad, I thought that they were more or less normal terminals, that's why I asked. MS

20 years, 7 months

TTYs for the deaf

by msokolov＠ivan.Harhan.ORG

Eric Smith <eric(a)brouhaha.com> wrote: > Fred wrote: > > the ASR33 TTY is Bell 103 at 300 baud? > > Michael wrote: > > That's what I've always thought, anyone who knows otherwise please correct > > me. Dammit, I somehow managed to misread Fred as asking "the ASR33 TTY is Bell 103 at 110 baud?", hence my answer. MS

20 years, 7 months

TTYs for the deaf

by lists＠microvax.org

On Sat, 11 Dec 2004, Michael Sokolov wrote: > I will be celebrating New Year at Butterfly Lounge > (www.butterflylounge.com), > and I might post here from my hotel room from a TI 707 dialing into > ivan.Harhan.ORG at 300 baud! (And yes, I have the same taste in women > as in computers: I like them both BIG!) Michael, We don't care. alex/melt

20 years, 7 months

Subject: Re: Got a HP 2648. Now what? Now women on list

by msokolov＠ivan.Harhan.ORG

Ladyelec(a)aol.com wrote: > Ya'll have at least one. > ME! > Isa Thank you for being on our list, and for your interest in Classic Computing! -- Michael Sokolov Engineer / Researcher / Truth seeker / Freedom fighter http://ivan.Harhan.ORG/~msokolov/

20 years, 7 months

Possible to speed up I/O subsystem of 5150?

by trixter＠oldskool.org

I have a few IBM model 5150s that I use to code entries for programming competitions and I'd like to try to speed up the hard disk in any way possible. (If you're curious what my last project was, check out http://www.pouet.net/prod.php?which=13722 to download and try it out -- it displays full-screen full-motion color video with sync'd sound -- yes, on a 4.77MHz 8088, no fooling). I've been looking for any way to speed up the hard disk subsystem (currently WD1002 with Seagate ST225) and I simply can't get more than 130KB/s out of the darn thing... so: - Is there any MFM/RLL 8-bit ISA controller that can read disks at their full 1:1 interleave? If so, where can I get one? 3:1 is the best I've been able to get using the above MFM combination. I haven't tried RLL yet because I don't have any RLL controllers. - If not, do such things exist as 8-bit ISA IDE controllers? I have lots of "little" IDE drives (320MB and 540MB models) that I could hook up. I attempted not one but TWO 8-bit Plus hardcards (both 40MB models), thinking that the embedded drive/controller combo would be better, but my experience with Plus Hardcards (even the 16-bit 120MB versions) is that, after about 8 years, the damn EEPROM forgets everything and it doesn't boot (no BIOS, get a 1701 "controller error"). So I couldn't get either of them to work. (As a result I have 4 Plus hardcards that I am *this close* to throwing away, unless someone has an idea of reviving them :-) Any advice? Or should I just try to find an EMS board and cache my data instead? (Speaking of which, does anyone have a LIM EMS board for sale/trade? Can't seem to find one of those either.) -- Jim Leonard (trixter(a)oldskool.org) http://www.oldskool.org/ Want to help an ambitious games project? http://www.mobygames.com/ Or check out some trippy MindCandy at http://www.mindcandydvd.com/

20 years, 7 months

TTYs for the deaf

by msokolov＠ivan.Harhan.ORG

Hello folks, I have a question about those TTYs that the deaf use. Are they real Teletypes, like ASR33 and friends, or not? I guess probably not, because it would be so super-cool if they were that it's probably too good to be true, but I thought I would ask anyway. So what are they? Are they normal ASCII terminals with standard modems built in, or something entirely different? Can one pretend to be deaf, go to some social service or whatever agency asking to use a deaf TTY, and dial into a timesharing host or BBS with it? It also seems like there are two kinds of deaf devices, TTY and TDD. What's the difference? MS

20 years, 7 months

5-1/4' drive on modern PC

by jfoust＠threedee.com

At 11:50 AM 12/11/2004, you wrote: >There are such devices though I think they use ABS plastic. Newer ones (3D >printers) seem to be using dust of some kind (starch?) with water or something >sprayed on the dust with an ink-jet head. Once having been in the 3D market, I have a small collection of objects >from UV-cured stereolithography and Z Corp's starch-based system, including one of my head as scanned by a laser body scanner. - John

20 years, 7 months

Anyone need 27128s?

by acme＠gbronline.com

I just acquired a large pile of 27128s and 27C128s -- clearly pulled from sockets, and as of yet untested. I thought I'd offer them to the list first. Ten for $10 plus postage. If no takers, I'll clean and verify 'em and put 'em up on the Web site for $3 each. Please contact me offlist. Later -- Glen http://www.acme-sales.net

20 years, 7 months

Anyone need 27128s?

by sales＠acme-sales.net

20 years, 7 months

← Newer
1
...
10
11
12
13
14
15
16
...
22
Older →

Jump to page:

2025

2024

2023

2022

2021

2020

2019

2018

2017

2016

2015

2014

2013

2012

2011

2010

2009

2008

2007

2006

2005

2004

2003

2002

2001

2000

1999

1998

1997

test-drb December 2004