test-drb May 2015

test-drb@ccmp.vtda.org

199 participants
259 discussions

Logic Analyzer software for the HP 10342B pre-processor

by marc.verdiell＠gmail.com

>From: Mike Loewen <mloewen at cpumagic.scol.pa.us> > Is it on this disk? > http://www.keysight.com/main/software.jspx?ckey=sw574&lc=eng&cc=US&nid=-5369 02556.536879990&id=sw574 No, but a generous member of this list sent me the files off line. Is this a helpful group or what. I am all set. Marc

9 years, 2 months

54 TK50 tapes on eBay

by Arno_1983＠gmx.de

Johnny Billquist <bqt at update.uu.se> wrote: > The TK50 normally do not gum up. There are two problems with them, and > those problems have been around since day 1. > The first one is that the heads get dirty. Cleaning with isopropanol or > similar with a lint-free pad solves that just fine. > The second problem is that the tape pickup gets unhinged. Remove the > covers and then you can fix that easily. So much for "YMMV": jkunz and I must have had some really bad tapes back then at the VCFe a couple of years ago. When we tried to read them (in a TK70, I think - does that make the difference?), they slowed down the mechanism, produced a squealing sound and stuck to the head to the point where in some cases the tape (carrier) broke in some cases. We did clean the head and tape guide parts with IPA several times only to get the same problem again. I'm sure he can elaborate a bit more about the tapes and the equipment used but I think I have it mostly correct. So Long, Arno

9 years, 2 months

Sanyo Denki 1402-B2 (paper tape drive)

by tdk.knight＠gmail.com

anyone know how to hook these up? has controllers to talk to a Shibaura VMC-45 with a Tosnuc 600 control picked it up for 50 bucks in near mint condition localy this week and i'd like to hook it up to my laptop to back up every tape i got at this time

9 years, 2 months

Seeking keyboard for Compaq Portable

by dave＠661.org

Does anyone here have a spare keyboard for a Compaq Portable? -- David Griffith dave at 661.org A: Because it fouls the order in which people normally read text. Q: Why is top-posting such a bad thing? A: Top-posting. Q: What is the most annoying thing in e-mail?

9 years, 2 months

HP 9144A and three QIC tapes available for free

by p.gebhardt＠ymail.com

Hi list, 3 years ago, I picked up an HP 9144A QIC tape drive with HP-IB interface. It came with three 16-track QIC tape drives. I never found the time to connect it to my HP 9000-300 and realized that I will probably never make use of it, which is why I'd like to give it to some other collector's hands who is interested. I powered up the drive for 2 hours, no smoke, the fan was running as expected. Nothing else tested. Picture of the actual three tapes which come with the drive: http://www.digitalheritage.de/OTHER/20141223_155006_tn.JPG I forgot to take pictures of the drive, but will do it, as soon as I can access it next week again. In the mean time, here is another one of the tape drive (not mine): http://www.hpmuseum.net/display_item.php?hw=257 The drive weights 9kg (20 lbs). First come, first serve. Drive and tapes are for free. You have to pay shipping costs or come to pick it up. Location is Bonn, Germany. Kind regards, Pierre ------------------------------------------------------------------------------- Pierre's collection of classic computers moved to: http://www.digitalheritage.de

9 years, 2 months

network event

by jwest＠classiccmp.org

Yesterday afternoon we had a "network event" on our storage network. Traffic was flowing, but with severe drops in connections. We believe we have most - but not all - resolved at this point. Unfortunately, in the thick of battle production machines come first so classiccmp server sat down for a while and was just brought back up. Apologies for the inconvenience.. Going to sleep now. J

9 years, 2 months

Looking for RL11 (Unibus RL02 controller)

by derschjo＠gmail.com

I've been using my lone RL02 with my QBus systems, I'd love to be able to use it with my 11/34 as well. (If anyone has a spare RL02 *drive* I'd be interested as well...) I have various DEC stuff for trade, drop me a line if you have one going spare. Thanks! Josh

9 years, 2 months

Memory options for an HP 1000 (HP 21MX / 2112A)

by marc.verdiell＠gmail.com

Dave, Super useful info again. In the meantime the machine has arrived, in very good shape. I'll post pictures when I have time tomorrow, and a video hopefully. I took a quick look inside to confirm - there is a DCPC and a MEM protect card - Memory controller is an older 2102A - Three are three 8k 2102A memory boards - No MEM card in slot 112 - Under the processor board there is a screwed on card, which seems to have ROM on it. Microcode I presume, but I don't know if that's the one you were talking about. I'll post photos to confirm The IO cards and the paper tape reader / punch that came with it suggest that it was configured with a paper tape reader, a paper tape punch, a mag tape and a TTY interface. A plausible story is that this was an early machine setup for paper tape and TTY and didn't have extended memory. The early 2102A controller fits that picture well. So I might be in the hunt for the cards or alternate solutions you mentioned. Marc From: "J. David Bryan" <jdbryan at acm.org> On Tuesday, May 19, 2015 at 23:12, Marc Verdiell wrote: > Thanks, very useful info, and the manual is indeed what I was missing. You're welcome. > But now where to find the DMS, with two cards in particular, that's > not going easy to find both that match... First, are you sure that the machine does not have DMS installed? It was a very common option that became standard later on, as all versions of the RTE operating system after RTE-II (circa 1976) required it. Second, if the machine originally came with DMS but was stripped for resale, then possibly only the MEM card (in slot 112) was removed. The firmware card is screwed onto the CPU board on the underside of the machine and is only accessible if the bottom cover is removed. So maybe it was overlooked, and the availability of MEM cards is likely to be reasonable, as the same card (but with different firmware) was used in the E/F-Series machines. Third, if the machine has neither DMS part, then indeed finding an M-Series DMS firmware card might be difficult. However, DMS firmware was also included with the later M-Series Fast FORTRAN Processor firmware (product number 12977B). Again, the FFP was a common option, and availability of that card might be better than the older standalone DMS firmware card. Fourth, if you can find a standalone MEM card, the M-Series DMS/FFP firmware source is part of the HP 1000 Software Collection on Bitsavers, so you could burn the required firmware PROMs and install them on a 12791A Firmware Expansion Module card, which plugs into the I/O backplane and cables to the CPU board. Both the FEM and the MEM were used on E/F-Series machines, so availability should be reasonable. Finally, the simplest HP operating system that used DMS (RTE-III) had additional hardware requirements: a Memory Protect card, a Dual-Channel Port Controller (i.e., DMA) card, one of several console I/O cards, a Time- Base Generator (i.e., clock) card, and either an HP 7900A or 7905/06/20/25A hard drive and its associated I/O interface(s). The latter may be the most difficult and expensive part. You can avoid the hard drive and use Ansgar Kueckes' HPDrive emulator with an HP-IB I/O card, but that requires RTE-IVB as the minimum OS, which requires at least 96KW of memory (128KW if you want to do anything other than boot the system :-). MP and DCPC also were exceedingly common options, so I'd be surprised if your system didn't contain them, unless they've been stripped out for resale. Without DMS, you're limited to 32KW. In that, you could run (with some additional hardware, most notably an HP hard drive) DOS-III or RTE-II. Without a hard drive, you'd be limited to running one of several paper tape or mag tape-based HP OSes. There are third-party OSes that run on the 1000, but I know nothing about them. At least software is no problem; virtually everything that HP developed for the 2116/2100/1000 machines is available via the Bitsavers collection. -- Dave

9 years, 2 months

8-bit Computer TV Channel Use

by nf6x＠nf6x.net

I've been brainstorming about hypothetical hardware for converting video from vintage 8-bit computers to drive modern monitors well, with support for all of the dirty tricks like color aliasing that many of them used. One of the things I would like to understand is the range of RF frequencies used by the machines that connected to ordinary televisions. My old Color Computer used US VHF channels 3 or 4 for NTSC video. I found a reference to the ZX Spectrum using UK UHF channel 35 for PAL video. What other channels were used all over the world by 8-bit home computers (and video games, too, I suppose), and which TV standards were used with them?

9 years, 2 months

Wanted: ASM-48 for Intellec MDS-2

by mainpatents＠gmail.com

That just sounds wrong to me applying +25v to do a read/verify. You're misinterpreting the datasheets. Richard

9 years, 2 months

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test-drb May 2015