test-drb June 2009

test-drb@ccmp.vtda.org

233 participants
404 discussions

Vintage Computers w New Tech. was Re: Hardware Hobbyists vs. Emulator Jockeys

by dm561＠torfree.net

Date: Wed, 17 Jun 2009 07:08:01 -0700 (PDT) From: Christian Liendo <christian_liendo at yahoo.com> >I am a fan when it doesn't ruin the end user experience. <snip> >The technology has to be built in a way so that you don't have to harm the old computer so that if you want to run it the old way, >you can. I mean sometimes you want the experience of listening to the grinding of a 1541 drive. ----------------- One of the not-much-larger-than-a-postage-stamp SD card disk drive emulators for the C64 does exactly that; it makes the same comfortingly familiar nasty sounds that a 'real' 15xx CBM drive would make.

15 years

Corvus software support for Mac

by snhirsch＠gmail.com

Just unearthed a Corvus Omninet interface box for Macintosh. It plugs into the older-style 9-pin Localtalk connector. Does anyone own or have a lead on the client software and admin tools that go along with it? Steve --

15 years

Looking for IMI 5018 MFM drive

by dm561＠torfree.net

Date: Tue, 16 Jun 2009 07:30:59 -0400 (EDT) From: Steven Hirsch <snhirsch at gmail.com> <snip> >For reasons unclear, none of my followups to this have appeared on the >list. >Mike, Cannot seem to get to you via e-mail. Will you please contact me >offlist on the subject? >Steve --------------- Boy, take a weekend off and look what happens; relax, everyone, I'm alive and well, and we're talking off-list; I know you were worried... ;-) mike

15 years

early PA-RISC machines

by lee_courtney＠acm.org

I know that one HP reseller here in the Bay area had a 930 (TTL-based HPPA RISC) a couple years ago. You could root around for other resellers on comp.sys.MPE, assuming you want to pay money for one. Of course they were really really slow, wouldn't you rather have a 950? The 930 was in way a prototype that escaped from the Lab. Lee C. --- On Thu, 6/11/09, Philipp Hachtmann <hachti at hachti.de> wrote: > From: Philipp Hachtmann <hachti at hachti.de> > Subject: Re: early PA-RISC machines > To: "On-Topic and Off-Topic Posts" <cctalk at classiccmp.org> > Date: Thursday, June 11, 2009, 8:46 AM > > > > > HP 9000 model 840 and HP 3000 model 930. > I think I have seen one of those here in Germany - running > HPUX 24/7 and being connected to the Internet. > > > -- http://www.hachti.de >

15 years

what are these?

by brianlanning＠gmail.com

http://cgi.ebay.com/2-VINTAGE-EXTERNAL-5-25-FLOPPY-DRIVES_W0QQitemZ20035377… One looks like the single sided floppy drives that came with the 5150. The other looks like it's from another planet. I originally though it was a QIC tape drive, but the shot inside the drive opening shows the slots along the side to hold the floppy disks.

15 years

fpga pdp's; [was Re: ...arrogance [was RE: UNIX V7] ]

by bob＠theadamsons.co.uk

Eric Smith wrote: >> Brad Parker wrote: >>> I did a "direct decode" pdp-11 in verilog recently just to see how >>> big it would be (and because I was frustrated with the pop-11 >>> project). It fits nicely & boots RT11 at 50mhz. >> At that speed, surely it hasn't finished booting RT11 yet! > sorry, I don't get the joke. clock is 50mhz, or 20ns; each state is one > clock and on average > an instruction is 3 states. I calculated 10mips. it seems to boot much > faster than my 11/44 :-) > > what did I miss? Possibly a pedant distinguishing (correctly) between mega and milli? ;o) Bob

15 years

PDP-11 Controller needed to use a couple of RX33 drive

by tiggerlasv＠aim.com

On Mon Jun 15 01:42:03 CDT 2009, spedraja at ono.com wrote: > But I have one question in addition... Are we speaking about a DIRECT > connection of the RX33 to the RQDX3, or we should need to use the BA23 > distribution board (or other) ? The home-brew cable I described goes DIRECTLY from the RQDXn controller to the floppy drives, and does NOT stop at any of the normal distribution boards / paddle cards. Controller <-----> cable <----- > drives This precludes using the RQDXn for any hard drives. On Sun Jun 14 03:14:57 CDT 2009, bqt at softjar.se wrote: > I think it's worth pointing out that people should never even try > connecting two hard drives in a BA23. You'll definitely wreck whatever > contents you have on the disks if you try. It is my understanding that this was true for older BA23 chassis, with only 4-button control panels. Ultimately, the problem was that the Ready and Write Protect lines were floating for the 2nd drive. Patching a pair of 10K resistors onto the 4-button control panel was all that was required to make the 2nd drive function normally, although admittedly, I can't recall if they needed to be pulled high, or low. Power supply loading may come into play, depending on how many drives & boards you have.

15 years

Tandy 1000 to a good home, CIB, Calgary area pick-up preferred

by scd.calgary＠shaw.ca

Hi all, I've got a much loved old Tandy 1000 I've decided to part with. It's still working, and it's been well cared-for. It has 640KB of memory and a 20MB HD. It comes with the original boxes, disks, and manuals, including the original BASIC manual! The monitor is monochrome, not color. I'm looking for collectors of Radio Shack gear in the Calgary area who would like this computer and who can come pick it up. Failing that, I will ship the Tandy out to someone if you pay the shipping. This is a great collector's item, so I hope someone will reply! I still need the Tandy for another week or two... I'm putting up videos of my programming experiences on Youtube... http://www.youtube.com/watch?v=oEwkd2Lk7Vs http://www.youtube.com/watch?v=uWdsWmL_YFo ... but I should be done with it by the end of the month. Please let me know if you're interested! S. D. Calgary, Alberta P.S. Last but not least, there's a DMP 430 dot matrix printer with the Tandy as well. If you come to pick it up, I'll ask you to take it as well. (I don't have a car, so I can't recycle it very easily myself.) If you need me to ship the Tandy, though, I'm quite sure you will NOT want the printer, as it's huge and heavy and will probably double the shipping costs.

15 years

CDP1802, was Re: Intersil EPROM

by jonas＠otter.se

Ethan Dicks <ethan.dicks at gmail.com> wrote: >> I don't think I ever did anything remotely interesting with it, but it's >> still a neat toy. > >It's a great toy. ...etc... In the 1980s, Chrysler made an electronic ignition system which used an 1802. It was fitted to all Volvos with mechanical fuel injection and catalytic converters sold in the US. Also the early versions of the Bosch Motronic fuel injection/electronic ignition system used 1802s. I believe the reason for using the 1802 was that it was more immune to interference than NMOS parts. Around 1982-1983 Bosch switched to the 8049. /Jonas

15 years

Need assistance in restoring to working order a MicroVAX 3800

by WVerish＠aol.com

Hi: I have a MicroVAX 3800 computer that went overnight from being able to boot from the hard drive to not seeing the hard drives at all. The computer will look at the TK70, but I do not have a bootable tape. I purchased a KFQSA board from the net, but that did not seem to help. A scan of then QBUS shows only UQSSP Tape controller MUA0 and the ethernet adapter XQB0. Any help would be greatly appreciated. Please keep in mind that I am a "newbie", but I am learning as fast as I can. I am 60 years old, and serious about getting this system up and running again. I would also be happy to be able to find someone with an Open VMS VAX version that can build me a bootable tape using the STABACKIT.Com tool provided with Open VMS VAX...............or...................use a tape-bases distribution that would come with a TK50 tape kit, which is supposed to be read-compatible with the TK70. Thanks for listening, Wayne Verish (440) 885-0803 **************Download the AOL Classifieds Toolbar for local deals at your fingertips. (http://toolbar.aol.com/aolclassifieds/download.html?ncid=emlcntusdown000000…)

15 years

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test-drb June 2009