test-drb

test-drb@ccmp.vtda.org

101090 discussions

by cclist＠sydex.com

> Date: Wed, 23 Apr 2008 09:30:23 -0500 > From: Jules Richardson > Sigh.. no. I had it in my head that one of the OMTI 5300 / 5400 boards > would do it - I checked though and they *are* QIC-02, but the interface is > only SASI, not SCSI :-( Or "brain dead" SCSI, in the case of the 7400. Sigh. I'm not turning up anything on the web on QIC-02-to-SCSI bridges. > Hazy memory says that one vendor did do a QIC-02 - QIC-36 bridge, but > including one of those *and* a suitable SCSI bridge in whatever you're > doing might be a bit silly. I think the QIC-bridges go the other way. I've got a Wangtek QIC-36- to-QIC-02 bridge board (QIC-36 is the "basic stupid" interface, while QIC-02 is the "intelligent buffered" interface). > It does seem there were a few QIC-02 ISA tape controllers around, though - > so you'd think that someone must have done a SCSI bridge! That's mostly because there's nothing much on a QIC-02 ISA tape controller; just address-decoding logic and DMA and IRQ handshake; think something on the level of your basic IDE controller. The smarts are in the drive. Ah, well. Time to look for a nice SCSI QIC drive. Personally, I like Tandberg over Wangtek. Anyone have any other preferences? Cheers, Chuck

17 years, 11 months

tape drives

by rtellason＠verizon.net

I saw some conversation going by in here recently about Exabyte drives, only the numbers don't sound anything like what I have, which is marked "Model: HH CTS". There are all sorts of other numbers on there, for various aspects of it. There are two of them, and this was a part of a whole IBM SSA system that I've been dealing with bits of here. Pushing open the little door I see something that sure looks like a helical-scan head, though somewhat smaller than the one normally seen in a VCR. I'm told that these hold 20G on a tape. The guy I got 'em from unfortunately doesn't have any tapes to go along with them. One of those tapes would back up pretty much of what I have on my LAN here, or whole machines, as they sit. I'm guessing that the interface I'll be looking at after I take it off of the current mounting plate will be SCSI-wide, like the CD drives and some of the other stuff I have with it. Does anybody have any tapes that will work on these, or can any of you guys point me toward where I could get a hold of some without getting into crazy expense? I'd sure like to make some backups with one of these units. Think I can get 'em going under linux? :-) -- Member of the toughest, meanest, deadliest, most unrelenting -- and ablest -- form of life in this section of space, ?a critter that can be killed but can't be tamed. ?--Robert A. Heinlein, "The Puppet Masters" - Information is more dangerous than cannon to a society ruled by lies. --James M Dakin

17 years, 11 months

Bubble memory?

by wrb2＠pangolin.com

Dear Ken, I ran across your name while searching on the term "Tektronix Bubble Memory Cassette". I am looking for a Tektronix part number 020-1310-00, which is a Bubble Memory module for a Tektronix 370 curve tracer. Since it seems like you did something with Bubble Memory in a previous life, I am wondering if you know what's inside this "cassette" or where I might be able to find one? Best regards, William Benner

17 years, 11 months

VT100 board horrors !

by dkelvey＠hotmail.com

Hi I doubt there is 39+13$ worth of gold on these boards. There have been a few items that were close. There was a pile of wire wrap pins. I figured that if the pins had 15 uinch of gold, one could cover shipping and still make about $2 on the deal. Most boards are to sparse to pay for shipping. Card edge connectors at least have about 20-50 cents worth of old. Scrappers rarely see that a board may have value as the original board. I had a neighbor once that was a scrapper. He had a pile of boards with one 80C187 on each of them. He'd crunched most down to dust before I'd seen them. Just one chip was worth more than the pile of dust he'd made. > To: cctalk at classiccmp.org > Date: Thu, 24 Apr 2008 01:14:24 -0400 > From: tiggerlasv at aim.com > Subject: VT100 board horrors ! > > > > Check out e-bay 280220921661 . . . > > VT100 logic boards, that someone decided to cut the card-edge > connectors off of. . . > > *Sigh* > > > > > T _________________________________________________________________ Spell a grand slam in this game where word skill meets World Series. Get in the game. http://club.live.com/word_slugger.aspx?icid=word_slugger_wlhm_admod_april08

17 years, 11 months

CQD-440 manual?

by ahling＠eadc.se

Hi, In reading /searching the net for a manual for CMD CQD 440 / 443, I come quite close in an old writing of yours... You write something about the HTML version of this manual also. If that contains any more information than the text-file, (picturers/schetces and locations of the various connectors/switches for instance), would it be to much to ask for an E-mail? All my best, G?ran ?hling

17 years, 11 months

82706 Data sheet

by grant＠stockly.com

I'm looking for a data sheet on the 82706 Intel VGA Controller. Does anyone know where I could get this? Sometimes data for a chipset is buried within a larger data book. Any ideas? If you don't know why I would want this... ; ) I've seen that chip on some 8bit ISA VGA cards. Unicorn Electronics sells them for $19.99, so its a plan! Grant

17 years, 11 months

Fwd: [Electronics_101] Digiencabulator

by rtellason＠verizon.net

Thought this might be of some interest in here... :-) ---------- Forwarded Message ---------- Subject: [Electronics_101] Digiencabulator Date: Wednesday 23 April 2008 13:21 From: "Bob Hyland" <E101 at afterhoursit.com> To: Electronics_101 at yahoogroups.com FOLKS! In case anyone missed the recent announcement (on or about April 1st), Parallax has been working (in secret) on building a digital version of the original GE Turbo-Encabulator. Nuts & Volts magazine recently ran an article on the effort -- thereby breaking the veil of secrecy! I contacted N&V and obtained permission to post a link to the article that is hosted on their site: http://www.nutsvolts.com/media-files/905/042008-PersonalRobotics.pdf Their only request was that I post the link to the article instead of sending the article to people. So, if (and when) anyone passes along the article, please send the link and not the physical PDF file. Enjoy! Bob H. (moderator Electronics_101) P.S. Does anyone have the specifications handy for the original, 1962 version of the Turb-Encabulator? The best copy I could find is here: http://www.floobydust.com/turbo-encabulator/ge_turbo-encabulator.pdf ------------------------------------ Please trim excess when replyingYahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Electronics_101/ <*> Your email settings: Individual Email | Traditional <*> To change settings online go to: http://groups.yahoo.com/group/Electronics_101/join (Yahoo! ID required) <*> To change settings via email: mailto:Electronics_101-digest at yahoogroups.com mailto:Electronics_101-fullfeatured at yahoogroups.com <*> To unsubscribe from this group, send an email to: Electronics_101-unsubscribe at yahoogroups.com <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/ ------------------------------------------------------- -- Member of the toughest, meanest, deadliest, most unrelenting -- and ablest -- form of life in this section of space, ?a critter that can be killed but can't be tamed. ?--Robert A. Heinlein, "The Puppet Masters" - Information is more dangerous than cannon to a society ruled by lies. --James M Dakin

17 years, 11 months

DEC HSZ20

by steve＠radiorobots.com

Still looking for any doc related to above. Thanks, Steve

17 years, 11 months

Seeking Xceed Color30 card

by trag＠io.com

>Date: Sat, 12 Apr 2008 15:04:29 -0700 (PDT) >From: David Griffith <dgriffi at cs.csubak.edu> >On Sat, 12 Apr 2008, Jeff Walther wrote: >> Now, it really shouldn't be that hard to whip something up with an >> FPGA and either some fastish SRAM or an open core DDR2 controller and >> one DDR2 memory chip. >How far did you get with this project? I'd love to see something that >just does greyscale. That and smaller modern parts would allow a lot more >to be crammed into that PDS slot. I would say I'm still in the conceptual stage. I've examined the Is and the Os in the documentation and I pretty much know what I want to build, with a few choices still remaining (e.g. SRAM vs. DDR2). But I'm stymied by the details and by the fact that when I started this I was unemployed and had time, although my motivation was low due to the associated emotional challenges. Now I am wonderfully employed, and very happy, but have very little spare time. I've read through "Designing Cards and Drivers for the Macintosh" (IIRC) but I need to go through in more detail and draw a diagram of the ROM structure. But it seems to me that some of what I need to know is in Inside Macintosh and extracting those tidbits is difficult (for me). Also, some of the information I want to examine is contained in Pascal coding examples, and I don't know Pascal. It will be easy enough to pick up, but it's another step back from the actual project. Of course, all of the Apple documentation assumes that the audience is already an expert at building the component they want to build and only needs the Apple specifics, and I've never designed a video card. I haven't found any kind of book about it anywhere. I picked up whatshisnames book about the video typewriter and the follow up book, but it doesn't seem quite applicable to this application. So I'm in one of those situations where I need bits of information in order to truly understand other bits of information. But I don't know in what order I really need the bits in order to make them comprehensible. Worse, I don't actually know which piece will be in which resource. So I need to find all the pieces of information, fail to understand them as I find them, but identify them, then after they've all been found, reorder them and go back, this time in logical sequence and put it all together. Maybe if I was smarter, one pass would be enough... I'm somewhere late in the finding all the pieces without understanding them yet stage, paused just before doing a quick learn of Pascal so I can examine/understand the examples in Inside Macintosh. But I still lack a resource on the finer points of video card design. I understand the basic fucntion, but there are always details which clever people have worked out, which a latecomer like me can greatly benefit from. For example, the various schemes to avoid drawing the top half of the screen and then using changed data for the bottom half of the screen. I'm familiar with the simple expedient of having two screen buffers. But I understand that there are more elegant solutions in use, otherwise video cards would need twice as much VRAM. Is it really all about tracking updates as they come in and only allowing ones which are earlier in the buffer than the current draw point, and delaying the others until the drawing point passes? If so, one would either hold up the host system, or need an additional buffer for the delayed changes. Yes? No? As far as cramming a lot more into the PDS slot with smaller components... Yes, the thing holding folks back is the time and skill to code, not the available technology. Taken to its logical conclusion, we would take a moderate sized FPGA, emulate the 68030 and FPU on board, put a fast memory interface on the FPGA, add a USB2 chipset and fast ethernet I/O, plus an ATA interface and video outputs, then just use the SE/30 board as an I/O peripheral and home to the Apple ROM, with the built-in 9" screen as one display and a connector for a large color display if desired. Alternatively, use a Coldfire MCU, patch the unimplemented 68030 instructions with the exception handler (there's a library at Freescale for this) and then copy the basic design of the Daystar CPU upgrades which already worked out how to put a faster 68030 into the PDS slot. With a little more work patching the firmware, one could use a Coldfire with built in USB and ethernet, but that's a lot more software work. One also loses the FPU functionality, and if your code calls many of the unimplemented instructions it could be pretty slow. But all those projects are dauntingly large. For now, I'd like a video card. Later, an ATA interface. Maybe USB after that, but frankly, without a more skilled programmer's help, I don't think I will be able/willing to write USB drivers. Eventually, it could all go on one card. Jeff Walther

17 years, 11 months

WTB ( and some questions ) WD1002-05 / HDO

by jos.mar＠bluewin.ch

I am in the market for a WD1002-05 or WD1002-HDO controller. Are these software compatible to the WD1002-27x ( of which I have 2 ) ? Does anyone have a software and/or schematics manual for the -27x ? I do realize the -27x is RLL, the others are MFM, but then I have a choice of disks to use. Or could the -27x be jumpered for MFM compatibility ? Target : - Obtain a harddisk with 100 sectors (@ 256 bytes/sect) per cylinder. 4 heads with 25 256-byte-sectors-per-tracks should do the trick. I do no care about lost space on the disk. Jos

17 years, 11 months

WTB: Emulex MT-02 controller

by aek＠bitsavers.org

> That was the MT-02 and QIC-36, not QIC-02 interface. They used the Sysgen (4000?) cards before switching to MT-02's.

17 years, 11 months

WTB: Emulex MT-02 controller

by cclist＠sydex.com

> Date: Wed, 23 Apr 2008 09:24:07 -0700 > From: Al Kossow > Archives seem to be better than Wangtek. Lots of Sun 150 meg ones > in peripheral boxes. Most of my DCxxx recovery lately has been done > with Archive 20150's. Usual problem with the rubber rollers. > Early Sun 2's used a QIC bridge board with an Archive drive. This > was early enough to have been SASI. May have been from Sysgen. The > early Sun FE ref manual shows the board, but I don't have my copy > anywhere handy. That was the MT-02 and QIC-36, not QIC-02 interface. > SMS 7300 and 7400 SCSI adapters supported QIC02 tape. That's a thought. My experience with the OMTI/SMS adapters have mixed results. Mostly, the command set they support does not include the IDENTIFY command, which leads to all sorts of problems if your software or SCSI controller locates peripherals in this manner. A Tandberg 4220 looks like a pretty good bet for a "read anything/write some" drive. Cheers, Chuck

17 years, 11 months

ISO Intel MDS hard disk controller docs

by aek＠bitsavers.org

Does anyone have the reference manual and schematics for the CDC Hawk controller board set for an Intel MDS2 ? I've turned up most of the other docs except for that.

17 years, 11 months

WTB: Emulex MT-02 controller

by aek＠bitsavers.org

> Ah, well. Time to look for a nice SCSI QIC drive. Personally, I > like Tandberg over Wangtek. Anyone have any other preferences? I assume this is for data recovery. Archives seem to be better than Wangtek. Lots of Sun 150 meg ones in peripheral boxes. Most of my DCxxx recovery lately has been done with Archive 20150's. Usual problem with the rubber rollers. Early Sun 2's used a QIC bridge board with an Archive drive. This was early enough to have been SASI. May have been from Sysgen. The early Sun FE ref manual shows the board, but I don't have my copy anywhere handy. SMS 7300 and 7400 SCSI adapters supported QIC02 tape.

17 years, 11 months

IBM DisplayWriter DOS

by cclist＠sydex.com

> Date: Tue, 22 Apr 2008 16:54:56 -0800 > From: Grant Stockly > I read that there was something sold to make the IBM DisplayWriter > DOS compatible? What would that take? There were versions of some DOS programs that would run on the DW, such as VEDIT come to mind. Unless my memory is faultly, one of the hurdles that you're likely to run into is that the system (including that daisy wheel) is EBCDIC- based, not ASCII. But I don't think it's impossible to get MS-DOS going on one; it wouldn't surprise me if someone actually did at some point. "PC compatible" MS-DOS is a whole 'nother matter, however. IIRC, IBM had a setup that would allow one to attach a PC to a DW and use the DW keyboard and display to run DOS applications on the PC. Cheers, Chuck

17 years, 11 months

WTB: Emulex MT-02 controller

by cclist＠sydex.com

Scratch the request for an Emulex MT-02. Looking at the Bitsavers tech ref for this board shows it to be a QIC-36 interface, not a QIC- 02. I should have checked before I posted, sorry. A great big "Doh!" Does anyone know of a QIC-02 to SCSI converter? I'm not finding anything. Thanks, Chuck

17 years, 11 months

cctalk Digest, Vol 56, Issue 26 Looking for a LM4250H 8 Pin DIP

by trebor72＠execpc.com

Message: 16 Date: Wed, 16 Apr 2008 18:08:06 -0400 From: "Andrew Lynch" <lynchaj at yahoo.com> Subject: RE: Looking for a LM4250H 8 Pin DIP or A real good substitute I am Looking for a LM4250H 8 Pin DIP or A real good substitute. I found a Data Sheet but having trouble locating any Parts. I am hoping someone has one in their Parts Box Bob, I bought some a while back from UnicornElectronics.com. They are really cheap parts and it fixed my home brew S-100 bus terminator with no problems. Apparently those op-amps get worn out over time and just die occasionally, I guess. At least replacing the one on mine worked. Thanks and good luck! Andrew Thanks I must have missed them; I just rechecked and they are listed on page 12 of my Catalog. I am adding a Terminator circuit to a Board I had made up for my BYTE-8 S-100 box Thanks Bob

17 years, 11 months

IBM DisplayWriter DOS

by warren＠databasics.us

Grant Stockley wrote: "I read that there was something sold to make the IBM DisplayWriter DOS compatible? What would that take?" IBM produced an IBM PC program called DisplayWrite (DW IV was the last version, IIRC.) This allowed document interchangability with other IBM platforms, including the DisplayWriter and 5520. It was NOT a method to make the DisplayWriter DOS compatible, however. It let the PC act like a DisplayWriter, and produced format compatible documents. Sadly, I think this must be what you read about. I suppose a retro-fit kit to make the DisplayWriter PC compatible, but I've not heard of it. If you find anything like this, let us know... Peace, Warren E. Wolfe, warren at databasics.us

17 years, 11 months

VAXstation 3100 and DecWindows

by RodSmallwood＠mail.ediconsulting.co.uk

Down to a product not being loaded (It also shows a missing product in the boot sequence) But it does not tell you which one!!! Rod -----Original Message----- From: cctech-bounces at classiccmp.org [mailto:cctech-bounces at classiccmp.org] On Behalf Of Dave McGuire Sent: 22 April 2008 15:59 To: General Discussion: On-Topic Posts Only Subject: Re: VAXstation 3100 and DecWindows On Apr 22, 2008, at 6:20 AM, Rod Smallwood wrote: > I'm past that hurdle. It seems you have to have a console connected > and define the display from there. > Its just a license problem now. I've been advised to load a couple > more appliaction and license them. That is great news! Let us know how things go after you've loaded the licenses. -Dave -- Dave McGuire Port Charlotte, FL

17 years, 11 months

Radio Shack Science Fair manuals

by wordorama＠optusnet.com.au

Hi Brian - found an email you wrote on classiccmp.org website re Radio Shack Science Fair kits. My dad has just found an old 200-in-one kit that he wants to donate to my son but there is no manual. Any chance we could obtain a copy of the manual from you at all? Thanks and kind regards J Stewart Brisbane, Australia

17 years, 11 months

IBM DisplayWriter DOS

by grant＠stockly.com

I read that there was something sold to make the IBM DisplayWriter DOS compatible? What would that take? I have two of these things with a letter quality daisy wheel and the giant sheet feeder. SuperCalc and TextPack are boring. Is there anything else that can be done with them? CP/M? Grant

17 years, 11 months

VAXstation 3100 and DecWindows

by RodSmallwood＠mail.ediconsulting.co.uk

I'm past that hurdle. It seems you have to have a console connected and define the display from there. Its just a license problem now. I've been advised to load a couple more appliaction and license them. Rod -----Original Message----- From: cctech-bounces at classiccmp.org [mailto:cctech-bounces at classiccmp.org] On Behalf Of Dave McGuire Sent: 21 April 2008 21:39 To: General Discussion: On-Topic Posts Only Subject: Re: VAXstation 3100 and DecWindows On Apr 20, 2008, at 2:32 PM, Rod Smallwood wrote: > 2. If you run the IVP and enter the node name or WSA0 (the device > name) > it simply says "cannot open display" > > 3. I am exactly where I was on Friday. > > 4. Until I find out what "Cannot open display" means I'm stuck That sounds suspiciously like what X libraries say when they...well, can't open the display. ;) In a UNIX-ish OS, here's what happens when one starts an X app when the DISPLAY environment variable isn't set, and a display isn't specified on the command line: g5$ unset DISPLAY g5$ xterm xterm Xt error: Can't open display: g5$ -Dave -- Dave McGuire Port Charlotte, FL

17 years, 11 months

are there any 68000 multi-cpu systems out there?

by ray＠arachelian.com

Just out of curiosity, were there any machines out there that were built >from multiple MC68000's CPU's?

17 years, 11 months

reel to reel

by jonas＠otter.se

"John Floren" <slawmaster at gmail.com> wrote: > So I'm looking at a Teac reel to reel deck going for $25. It comes > with 6 tapes, which judging from the prices on ebay is a pretty good > deal. What I'm wondering is if anyone can tell me about the kind of > life I'd be getting out of these tapes. I don't plan to record too > much (I'm not in a band or anything) but my friends and I would > probably be making recordings from time to time and I expect that I > would eventually want to reuse some of the tapes; how many times can > you usually write to these before you start seeing a noticeable > degrading in sound quality? > > John > Many times, probably hundreds, as long as the magnetic layer doesn't begin to come off. Old tapes may be at risk of deteriorating. To get the best recordings possible, use a bulk eraser to erase the tapes before reusing them, and make sure that all parts of the deck that come into contact with the tape, such as heads, tape guides, capstan etc are regularly demagnetised. Jonas

17 years, 11 months

Removing the sides of a DEC mini rack

by silvercreekvalley＠yahoo.com

Thanks for all the tips. I removed the two brackets on the rear of the cab, and then turned the cab on its side and gave the underside of the sides a sharp tap with a hammer (cushioned). Eventually the sides came off. They were quite tight - but came off in the end without damage. Many thanks for the help! Ian. ____________________________________________________________________________________ Be a better friend, newshound, and know-it-all with Yahoo! Mobile. Try it now. http://mobile.yahoo.com/;_ylt=Ahu06i62sR8HDtDypao8Wcj9tAcJ

17 years, 11 months

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