test-drb January 2010

test-drb@ccmp.vtda.org

187 participants
240 discussions

by bob＠copenhagen.cuug.ab.ca

Recently a friend of mine in Calgary (Canada) fell heir to a 13Kg box of Solaris manuals. He says that they are still in their original plastic wrappers and that most of them have "5.1" and "x86" on the spines. There are a few which appear to relate to Solaris 2.5.1 for Sparc. If anyone is interested please get in touch with him directly: rick at hartmantech.com Bob Bramwell | The birds have vanished into the sky, | and now the last cloud drains away. +1 902 531 2289 | We sit together, the mountain and I, | until only the mountain remains. | - Li Po, 8th Century Chinese poet

14 years, 11 months

Part Number for a MicroVAX II Fan

by ard＠p850ug1.demon.co.uk

> Finally got round to getting the fan out. It is a 120mm fan, marked as > follows: > > Nidec > Torin > TA450DC > Model A 31728-10 > 10 V.D.C > 30 AMP I do not believe for one instant that that fan draws 30A! 0.3A, quite possibly. > > The only readily available DC fans I can find are 12V, guessing these would I've seen 24V ones, but those are even less use to you. > run at a reduced speed compared to the ones I have in the machine now, but > would probably otherwise work OK. What do you reckon? If this would work I Well, if it was my machine, I'd have a go are repairing the old fan first. Officially I'd claim that was for originality, practically it's bacuase I've got more time than money :-). Seriously, you've got nothing to lose by trying to take it apart and find the fault. If you can't fix it, you can just fit a new fan anyway. > might replace them both with quieter fans (not sure what the flow rate of > these fans is any idea? > > The connector is difficult to describe. The fan has two tags that stick out > and the cable has a plastic block on the end with a socket that fits the two > tags. Yes,t that's the standard arrangemetn. The tags can have wires soldered straight to them, or you cna use faston terminals . Smoe manufcatuters also sold leads with mouteded connectors that fitted onto the tags on their fans, as you have here. -tony

14 years, 11 months

Compaq Portable II fails to boot - some analysis

by thomas.gardner＠sbcglobal.net

Sometime ago I posted a request for help on my two Compaq Portable IIs that failed to boot from the FDD. I now can boot one using an "off the shelf" (at Weird Stuff) half height 360 kB FDD in place of either of the two Canon 5201 1/3 height FDDs that were in the two Portable IIs. Both exhibit the same failure mode, while trying to read the disk visibly spins erratically, as if there were some form of stiction causing it to go slower and then faster. Manually turning it with and without a disk, the spindle motor feels free of stiction. It is surprising to me to find both Canon 1/3 height FDDs fail in the same mode, suggesting a fundamental flaw in the design. For example, the full height and half heights I used in this project are older than the Canon's, of unknown provenance, but all 5 have worked flawlessly. Any ideas, other than avoid old Canon 1/3 height FDs? Anyone have a working 1/3 height 360 kB Canon FD? (I think I need Canon to get the bezel right on the machine I am "restoring"). Tom PS: I bought a package of 20 360 kB FDs off the internet and one of my problems was that about 1/2 of them were full of defects, causing some of my problems. I finally solved that problem by throwing away any disk with any defect found during Format and doing a Diskcomp after each Diskcopy.

14 years, 11 months

6809 SBC (was Editor religious wars (was Re: Museums))

by lynchaj＠yahoo.com

http://classiccmp.org/pipermail/cctalk/2010-January/281973.html 6809 SBC (was Editor religious wars (was Re: Museums)) David Betz dbetz at <mailto:cctalk%40classiccmp.org?Subject=Re%3A%206809%20SBC%20%28was%20Editor %20religious%20wars%20%28was%20Re%3A%20Museums%29%29&In-Reply-To=%3C1EA52674 -F26F-4783-9889-80FEBFDC0F0C%40xlisper.com%3E> xlisper.com Thu Jan 28 12:40:03 CST 2010 * Previous message: Editor <http://classiccmp.org/pipermail/cctalk/2010-January/281971.html> religious wars (was Re: Museums) * Next message: 6809 <http://classiccmp.org/pipermail/cctalk/2010-January/281975.html> SBC (was Editor religious wars (was Re: Museums)) * Messages sorted by: [ <http://classiccmp.org/pipermail/cctalk/2010-January/date.html#281973> date ] [ <http://classiccmp.org/pipermail/cctalk/2010-January/thread.html#281973> thread ] [ <http://classiccmp.org/pipermail/cctalk/2010-January/subject.html#281973> subject ] [ <http://classiccmp.org/pipermail/cctalk/2010-January/author.html#281973> author ] _____ On Jan 28, 2010, at 1:28 PM, e.stiebler wrote: > David Betz wrote: >> On Jan 28, 2010, at 1:00 PM, Ben wrote: >>> It seems only Motorola thought of 'home' computing >>> more with 6809. >> I always wanted to program the 6809. I have a SWTPc 6800/6809 system that I built but I never fleshed it out with a disk drive and OS. Does anyone make a 6809 SBC that will run OS-9 these days? > > I think there is one hiding on : > > http://groups.google.com/group/n8vem I checked this out a while ago but I think it is just a 6809 coprocessor board that only works with their Z80 board. > > Or take a cheap FPGA kit, there is the system09, which runs a lot of software in the meantime Thanks for the suggestion but I was hoping for something actually had a 6809 chip on it. _____ size=2 width="100%" align=center> The N8VEM 6809 host processor by itself is dependent on the ECB SBC for its IO. However, I recently released an "IO mezzanine" PCB that connects on top of the 6809 host processor board that allows it to be operated independently with its own power interface, serial port, timer, and dual VIAs for IO. One of the N8VEM builders ported CUBIX to the 6809 host processor and I am using ASSIST09 on the 6809 host processor with IO mezzanine as a stand alone computer. It definitely uses a real 6809 CPU. Thanks and have a nice day! Andrew Lynch

14 years, 11 months

Looking for an SBUS CG3 501-1718 or 501-1909

by silvercreekvalley＠yahoo.com

Hi I'm looking for a SBUS cg3 card, the later models which were 501-1718 or 501-1909. I have a new monitor which will only sync to 1152x900x76 not 1152x900x66 the card I have (of course). Its for a sparcstation 1+. For some reason the cg3 is the only card I could ever get working with the sparcstation 1+. Later TGX cards, etc wouldnt work. Anyone have a spare? I'm in the UK, but for something this size shouldnt be too much to post. Thanks Ian.

14 years, 11 months

Herb Grosch

by evan＠snarc.net

Computer scientist Herb Grosch died today. http://en.wikipedia.org/wiki/Herb_Grosch

14 years, 11 months

PDP8E and compliments

by spedraja＠ono.com

Hello. I shall receive in a short one PDP8E in working state. It was used with one paper tape reader years ago. With independence of the revision of the machine that I shall do, I should like to locate some peripherals to interact with the computer. I was thinking in one Teletype with paper tape reader-punch, or both, one cathode-ray terminal or typewriter terminal and one paper tape reader-punch... I have one VT220 operative that perhaps could use with the appropiate cable, with I'm not sure about this. What I have is one offer for one modern storage device for the PDP8E of solid state kind or similar. It's expensive and I must think about it seriously. I should agree any comment and offer related with this matter. Better for free :-) Regards Sergio

14 years, 11 months

Shaft encoder in HP2631B printer

by ard＠p850ug1.demon.co.uk

This is a long shot... On the other hand, there are people here who've done all sorts of odd things, and the only silly question is one that's not asked (or something like that). As I mentioned yesterday (when I asked about zneer diode data), I've got an HP2631B printer that's gone crazy. I had anohter quick look at it today, and it appears that one problem is the shaft encoder on the right hand end of the carriage leadscrew. This connects by a 10 way cable (integral with the encoder) to the 'printer logic' PCB, 6 of the pins on the connector sseem to be used, 2 grouds, 2 +5V and the 2 quadrature output signals. Those 2 outputs are buffered by a couple of sections of a '14, the outputs of that go to testpoints (and elswehere, of course). Anyway, both those testpoints are low all the time (turning the leadscrew by hand, I've not fixed the motor drive amplifer yet!). The outputs from the encoder are high all the time (so the problem isn't the '14, more's the pity), they are genuinely high, not floating. And there don't seem to be any pull-ups on the printer logic PCB< so the 'high' is coming from the encoder. Anyway. Iv'e read the HP service manual (on http://www.hpmuseum.net) and it appears you need special tools to remove and replace the encoder. The encoder disk is epoxied to the neadscrew, you need a special puller to break the bond and an alignment tool to get the encoder disk the right distance insde the encoder housing when you refit it. Of coruse I don;t ahve the tools... Has anyone ever done this? Maybe the same tools, or something like them, were used with THe shaft encoders that HP sold as loose componets. Any thoughts? -tony

14 years, 11 months

Sorta-OT: Selling IBM Model M13 Keyboards, proceeds benefit Infoage Science Center

by starbase89＠gmail.com

As a sort of fund raising method for Infoage, I am selling some things for them. This one is a Model M M13 keyboard with the built in trackpoint. http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=270522341799 Thanks Joe

14 years, 11 months

ARM & 8051 Shipments (and kinda PPC)

by ken＠seefried.com

I've looked into this a bit. As noted previously, it is essentially impossible to figure out exact shipments of 8051, as there is no central clearinghouse of licensees, and there are literally dozens of suppliers sticking 8051 IP in all sorts of things. That said, according to the only reasonably well cited analyst report I have (from Emitt Solutions), the 8051 architecture accounted for 19% of the US$4.9 billion 8-bit MPU market in 2007. If you wave your hand and say the average volume price across all 8051 variants is US$0.25 (a number I think is probably high), that's around 40 billion units shipped in 2007. According the Annual Report for ARM Holdings, Plc., there were shipped 2.6 billion ARM processors for mobile applications and 1.4 billion in other applications from all licenses in 2008. This was up from around 3 billion units in 2007 (in a total market for 32-bit embedded processors of around US$3.8B). Safe to assume it was more than that in 2009. Not sure what that represents as a revenue number, as ARM Holdings revenue numbers are for licensing fees. However, one could guess it's a market of significantly more than US$4b across all licensees in 2008. By comparison, Freescale did around US$1.88B in microcontroller sales, but that was across all their lines (including the still very popular 68xx/HC lines), so is safe to assume the actual units shipped for PPC is a fraction of ARM numbers. I know there are other PPC licensees, but I don't think they're going to make up that gap. All analysts agree that the 8-bit market is eroding and the 32-bit world is exploding, from a market share if not revenue perspective. KJ

14 years, 11 months

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test-drb January 2010