test-drb August 2012

test-drb@ccmp.vtda.org

215 participants
247 discussions

by mcguire＠neurotica.com

Hey folks! Would anyone happen to have a PCB footprint for a TO-263 package? I'm designing a circuit that will use an LM2577 switching regulator. I've checked on gedasymbols.org to no avail. I'm kinda surprised it's not in the standard library. Thanks, -Dave -- Dave McGuire, AK4HZ New Kensington, PA

12 years, 4 months

Sunday-night repair for Wangtek 5000 series tape drive

by cclist＠sydex.com

Last night I pulled out an old Wangtek 5000 series QIC tape drive (uses DC300XL carts) and discovered that the rubber capstan had totally degraded and fell to pieces. After looking at bits of rubber and vinyl hose as possible replacements, I hit on using a plain old vinyl grommet that fit snugly on the bare shaft and, for good measure, added a nitrile O- ring to fill the "slot" in the grommet. Worked like a champ. Maybe this will be useful to others. --Chuck

12 years, 4 months

Panasonic HHC technical information

by rrr_lopes＠yahoo.com.br

Hello Tony, That would be great! If somebody don't may you scan it and send by e-mail, please? Thank You! Ricardo > > > > Hello,=0A= > > =0A= > > I'm trying to understand the intriguing Panasonic HHC.=0A= > > Does somebody have additional technical information beside the contents of = > > the User's Manual?=0A= > > I'm particularlly searching for the SnapFORTH ROM image and manual, any har= > > dware schematics, and the expansion connector pinout.=0A= > I haev my own had-drawn schematics for the machine and the > printer/cassette interface. Of course they don't give any information for > the interals of the ASICs, but they might be a start. > > I can't remember if I have already sent them to somebody (Eric?) who > might have scanned them. If not, I can make a photocopy and post them out. > > -tony >

12 years, 4 months

To all with interest in IBM 7090

by blstuart＠bellsouth.net

> If the compatability goes far enough that either kind of > device works > with either kind of interface, then I agree, but then I don't know quite how far it goes, but the controller cards we use in our products all speak both SATA and SAS.? So the drives border on interchangable.? There are differences in the command messaging and in the drive characteristics, but it's pretty easy to support both. As to the question of SATA vs IDE, I agree with your concerns over forced obsolescence.? But as far as classic machines go, I'm more concerned by the dearth of 50-pin SCSI I drives, and I haven't had very good luck with using adapters to put newer drives on older machines. As to FC, I will have to admit to a bit of bias. Competing with FC pays the bills.? But even with that bias, for communicating between a host and a storage shelf, I have a hard time imagining a good reason to do anything other than a light weight storage protocol directly over Ethernet. (And to avoid any confusion, my definition of light weight does not include FCoE or iSCSI.) BLS

12 years, 4 months

IBM 5324? - was Items free for pickup; Iowa

by nigel.d.williams＠gmail.com

On Fri, Aug 10, 2012 at 11:56 PM, JP Hindin <jplist2008 at kiwigeek.com> wrote: > IBM 5324 w/keyboard and monitor > I've never powered this on and the drive knobs were snapped off prior to > my receiving it. My understanding is this is a binary compatible System/34 > in baby shoes, but I might be full of it. > my search-fu is weak or that is a tough machine to find much about, anyone have any further details? is it part of the IBM Datamaster family? I found pictures here: http://www.retrocomputing.net/parts/ibm/5324/ and JP's video pans past the console terminal here: http://www.youtube.com/watch?v=KgECJPIU1AI#t=5m40s and an overall view here (lower right under the bench): http://www.youtube.com/watch?v=KgECJPIU1AI#t=9m47s

12 years, 4 months

Found a rs6000 43p

by john＠yoyodyne-propulsion.net

...in a closet here. They used to have a bunch of these were I used to work, as a CAD system. This one has AIX on it... it fails bootup and drops you to some sort of prompt right after it plays it's tune (with the little speaker icon). You can type ls at the prompt and gets what looks like a list of devices. Should I bit it, or is it worth trying to fix? Anyone point me in the right direction? I only dug it out because of the CDE thread, so it's "all your fault!" -- Yoyodyne Propulsion Systems: "The Future Begins Tomorrow" Visit us at: http://www.yoyodyne-propulsion.net -------- "I'd like to hold off judgement on a thing like that, sir, until all the facts are in. " General "Buck" Turgidson

12 years, 4 months

IBM terminals (shame on Richard)

by wdonzelli＠gmail.com

> Actually I have been learning more about HDLC, X.25, 3270 chitchat, > etc., in order to try and get these Westinghouse airline terminals to > talk. You will probably need a fair amount of beer, too. > However, as we discussed during your last visit when we were at the > Hole, I need to focus on graphics and not become exclusively a > terminal museum. Get some twinax/bisync *graphics* terminals my way > and I'll get a lot more interested. However, I just haven't found > them. The 5080 family of terminals is probably up your alley. But, they seem to be rare. I used one many years ago, at an open house at EMD. Fun stuff. And then their is the 7361 FastDraft system - it is an IBM S/1 controlling some sort of third party graphics engine. RCS has one, and we can not figure the thing out. If you watch a bad Cameron Diaz movie >from a few years back, you can see it on the big screen (stuffed and mounted, anyway. No, not Ms. Diaz.). -- Will

12 years, 4 months

PXG/PXG+/PXG Turbo/PXG Turbo+ boards for DECstation 5000

by markwgreen＠rogers.com

> Date: Sun, 12 Aug 2012 09:39:31 -0600 > From: Richard <legalize at xmission.com> > To: cctalk <cctalk at classiccmp.org> > Subject: Re: PXG/PXG+/PXG Turbo/PXG Turbo+ boards for DECstation 5000 > Message-ID: <E1T0aGJ-0000zS-R7 at shell.xmission.com> > > > In article <20120812105727.2a3ad798.jkunz at unixag-kl.fh-kl.de>, > Jochen Kunz <jkunz at unixag-kl.fh-kl.de> writes: > > > On Sat, 11 Aug 2012 14:53:46 -0600 > > Richard <legalize at xmission.com> wrote: > > > > > Does anyone have one of these boards? > > Yes, at least one PXG+ and IIRC a PXG that's the RAM modules missing. > > I'd like to see some high resolution close-up pictures if possible! > -- > "The Direct3D Graphics Pipeline" free book <http://tinyurl.com/d3d-pipeline> > The Computer Graphics Museum <http://computergraphicsmuseum.org> > The Terminals Wiki <http://terminals.classiccmp.org> > Legalize Adulthood! (my blog) <http://legalizeadulthood.wordpress.com> I have one of the PXG models in a Decstation 5000/200 up at the cottage, I can try to get a picture of the next time I'm at the cottage. The PXG uses an i860 for 3D geometry and a pixel planes chip for 2D raster fill. A pixel planes chip is relatively easy to design, even with primitive VLSI tools. I built one in the mid 1980s using a gate array technology that we had free access to. Once you have the cell for a single pixel it's just a matter of duplication and adding some interface logic around the edge of the chip.

12 years, 4 months

Anyone have printouts for KKTA/KKTB 11/44 MEM MGMT tests?

by brad＠heeltoe.com

Just curious if anyone has printouts (or scans) of the PDP-11/44 memory management diagnostics KKTA/KKTB KKTA 11/44 MEM MGMT PRT A KKTB 11/44 MEM MGMT PRT B KKTAB1.BIC xx-xxx-xx 3369 27 3395 0 KKTBD0.BIC xx-xxx-xx 3396 30 3425 0 I have the binaries from xxdp images but no listing... -brad

12 years, 4 months

C64 PSU specs

by jules.richardson99＠gmail.com

I finally got hold of that PSU-less C64 that I mentioned on the list a few weeks ago, followed by a 9VAC PSU to test it with. Other than needing the VIC-II and associated ICs re-seating I've not encountered any problems (I've not tested the 1541 yet though due to lack of a cable). Anyway, I'd like to sort out a better PSU for the machine itself until I can get a genuine one from somewhere - does anyone know what a reasonable max current draw on the 9VAC lines might be? (This is an original 'breadbox' machine) The wall-wart 9VAC PSU that I found for testing is only rated for 400mA, which I suspect might be on the low side; I've seen claims of needing 1A or more, and http://www.hardwarebook.info/C64/128_User_Port only states 100mA max for the user port, suggesting that the machine itself might require quite a lot under certain conditions. cheers Jules

12 years, 4 months

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test-drb August 2012