test-drb June 2004

test-drb@ccmp.vtda.org

281 participants
616 discussions

by aek＠spies.com

I was thinking about the poor guy in Finland that was going to have to rewire his PDP-7 backplane tonight, and did some digging for bit/sleeve part numbers. Amazingly, you can still buy the right stuff from Cooper Tools. They have a really neat pdf catalog http://www.cooperhandtools.com/catalog/pdffiles/electcat_00/Brands/WireWrap… >From a 1967 DEC Logic Handbook, you need a gardner-denver 26263 bit and 18840 sleeve for #24 wire and 504221 bit and 500350 sleeve for #30 wire. The #24 unwrapping tool is 500130 These may also work for 1401 connectors, which are quite similar to the H800 DEC single sided module blocks with rectangular shaped pins.

20 years, 6 months

8" hard sectored floppies

by d_cymbal＠hotmail.com

Are hard sectored 8" floppies of any use to anyone? I've got several boxes of still shrink-wrapped SSSD hard sector disks. I've sold a couple boxes on epay, but action on them was lower than I'd imagined. Some folks who resell alot of 8" floppies told me "good luck" because hard sectored just don't sell. I've seen new soft sectored disks advertised online for fairly hefty prices (don't know if they are selling at that price or not). What systems made use of these? Any that I might own or want to own some day that it'd be worth me holding on to these if I can't sell them for a price worth it to drive to the post office and ship them?

20 years, 6 months

Computer flooring/flooding/water in computer rooms

by msokolov＠ivan.Harhan.ORG

Huw Davies <huw.davies(a)kerberos.davies.net.au> wrote: > to avoid waste water from the computer room contaminating the > mouse rooms below. What's a mouse room? MS

20 years, 6 months

8" hard sectored floppies

by pete＠dunnington.u-net.com

On Jun 3, 13:08, Fred Cisin wrote: > > > I'm almost sure I've seen a 16 hard sectored 8 inch disk someplace. > > On Wed, 2 Jun 2004, Don Maslin wrote: > > I suppose that is possible, Dwight, but it may be a surprise to 3M! > > Although I do not have any examples handy, it would not surprise > me at all to find out that there exist SOME media that weren't > available from 3M! The original IBM hard-sectored 8" floppies had 8 sectors, and I don't think 3M ever made those :-) -- Pete Peter Turnbull Network Manager University of York

20 years, 6 months

Found Today - Sony SMC-2000, etc.

by marvin＠rain.org

Something I've wanted for quite a while is a Sony SMC-2000 computer with the LDP-2000 laserdisc player. Today I finally got it! This unit had been used by a local school and they needed to get rid of it. It came with some laserdiscs and ... four service manuals for both the computer and laserdisc player! Apparently this runs MS-DOS 2.11 and I don't think that came with it. But unless that is a special OEM version of MS-DOS, it won't be a problem. Also included were 8 laserdiscs including three volumes of Dream Machine and two volumes of Space Archive discs. They also had several shrinkwrapped packages of IBM DOS 3.30, and I put one of them on VCM. Also listed on VCM was a copy of the IBM Guide to Operations for the Personal Computer XT, and Volume 1 of the Hardware Maintenance and Service for the Personal Computer XT (these are duplicates of what I already have.) BTW, the money received for these will go back to the school computer lab. They had quite a bit of stuff that will either be sold or sent to that great storage location in the sky. It looked like there were quite a few ISA sound cards, network hubs (10 Mb/sec), etc.

20 years, 6 months

8" hard sectored floppies

by rigdonj＠cfl.rr.com

I've never seen any Wabash or Elephant 8" disks. Joe At 05:52 PM 6/3/04 -0400, you wrote: >you forgot Wabash and Elephant disks... at least I have those laying around the house... > >best regards, Steve Thatcher > > >-----Original Message----- >From: "Joe R." <rigdonj(a)cfl.rr.com> >Sent: Jun 3, 2004 5:09 PM >To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk(a)classiccmp.org> >Subject: Re: 8" hard sectored floppies > >At 01:08 PM 6/3/04 -0700, Grumpy Ol' Fred wrote: >>> > I'm almost sure I've seen a 16 hard sectored 8 inch disk someplace. >> >>On Wed, 2 Jun 2004, Don Maslin wrote: >>> I suppose that is possible, Dwight, but it may be a surprise to 3M! >> >>Although I do not have any examples handy, it would not surprise >>me at all to find out that there exist SOME media that weren't >>available from 3M! > > Let's see; IBM, Tektronix, Verbatim, Memorex, Digital, Maxell, Intel, >Centech, Radio Shack, Data Systems. That's just some that I have laying >around the house. > > Joe > > >

20 years, 6 months

8" hard sectored floppies

by dwight.elvey＠amd.com

>From: "Don Maslin" <donm(a)cts.com> > > >On Wed, 2 Jun 2004, Frank Smith wrote: > >> --On Wednesday, June 02, 2004 13:22:39 -0400 Damien Cymbal <d_cymbal(a)hotmail.com> wrote: >> >> > Are hard sectored 8" floppies of any use to anyone? I've got several boxes of still shrink-wrapped SSSD hard sector disks. I've sold a couple boxes on epay, but action on them was lower than I'd imagined. Some folks who resell alot of 8" floppies >> > told me "good luck" because hard sectored just don't sell. >> > >> > I've seen new soft sectored disks advertised online for fairly hefty prices (don't know if they are selling at that price or not). What systems made use of these? Any that I might own or want to own some day that it'd be worth me holding on to these >> > if I can't sell them for a price worth it to drive to the post office and ship them? >> >> I'd be willing to buy a box or two of them to use in my Altair floppy drives if >> they are 32 sector floppies. >> >> Frank > >To the best of my knowledge, all 8" hard sectored disk are 32 >sector. The only difference is between the 'normal' hard sector >arrangement where the sector holes encircle the hub hole, whereas >the 'Vydec' compatible disks have the sector holes around the >periphery. They are not common, however. > > - don > Hi Don I'm almost sure I've seen a 16 hard sectored 8 inch disk someplace. Dwight

20 years, 6 months

What's the best way to cut a PB book apart for scanning?

by aek＠spies.com

I found my Millenium MicroSystem Analyzer manual while searching for the manual for the Brikon 723 FD tester. I thought I'd scan it but it's bound into a paper back book. What's the best way to cut it apart so that I can scan it? My scanner has a feeder and it's th only way to scan something. -- If the glue has dried out, just break the binding and peel the pages apart. clean the hardened glue off the edge before feeding through the scanner. Alternatively, go to a print shop and have them cut the binding with a paper shear, making sure the spine of the book is flat.

20 years, 6 months

mailserver delays

by rachael＠rachael.dyndns.org

As it seems my mail server has been having some problems, I`m very sorry that my replys have been delayed so many days. for some unknown reason my replyes had been frozen in exim. with delayed regards Jacob Dahl Pind -- CBM, Amiga,Vintage hardware collector Email: rachael(a)rachael.dyndns.org url: http://rachael.dyndns.org

20 years, 6 months

8" hard sectored floppies

by dwight.elvey＠amd.com

>From: "Pete Turnbull" <pete(a)dunnington.u-net.com> > >On Jun 3, 10:39, Dwight K. Elvey wrote: > >> There is a difference between single and double >> density that is related to the position of the index hole. > >Are you thinking of the different position of the index hole in 8" >disks? That differentiates single-sided from double-sided, not >densities. Yep, that is it. Dwight > >> My >> understanding is that unlike the 5-1/4 disks, the 8 in. media >> is the same for the single and double density, just higher >> quality. In fact, I punch a new index window in some of my >> double density 8 inch floppies and I've been using them, with >> no troubles, as single density. >> The 5-1/4 disk are a different story. Single/Double don't mix. > >Sure they do. Same coercivity. There might be a difference in quality >on early ones, but barring flaws in the emulsion coating, they're >interchangeable, and you can always use DD as SD. > >It's single/double density and high density that are different. > >-- >Pete Peter Turnbull > Network Manager > University of York >

20 years, 6 months

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test-drb June 2004