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101090 discussions

A CD-ROM that is compatible with the 16700A LA!

by mechanic_2＠charter.net

Hello all, . . . . For those of you who having not been following my trials and tribulations with a 16700A in another topic here is a partial update. I received this LA from a benefactor who has stepped forward. A real big thanks to him. I have run into that incompatibility problem with External CD-ROM Drives. . . . . I am disabled and partially housebound. I am living on SSD so money is very tight for me. I am looking for a CD-ROM Drive for little or nothing that is compatible with the 16700A I have an NEC 3x Drive that uses the CD Carriers. Remember those. I have installed this and a Maxtor 245MB SCSI drive in an External SCSI box. The Termination on the CD-ROM Drive is turned off and I removed the Termination resistors on the HDD. I have a Terminator installed on the end of the SCSI bus on the External Case. Could someone please help me out? Any and all help is greatly appreciated. GOD Bless and Thanks, rich! --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus

8 years, 5 months

Anyone have any info on the NEC D2167D-2?

by ethan.dicks＠gmail.com

Hi, all, I'm going through a box of random ICs and one particular item is not showing up on my searches outside of a couple eBay auctions for chip collectors. The IC is a 20-pin ceramic body with side brazed legs, gold pins, chromed lid, with NEC D2168D on it with "-2" painted on the ceramic and date codes >from 1984. It's almost certainly a RAM chip of some kind, but I'm not finding any pinouts or data sheets. Anyone recognize this? Anyone know a system that uses them? I have more than 10, and since I haven't run across them before, I probably don't have a machine that needs them. Thanks for any tips. -ethan

8 years, 5 months

ARPANET Reaches the Royal Signals and Radar Establishment (RSRE, Malvern)

by pbirkel＠gmail.com

The following extract comes from a History of Programming Languages (HOPL) retrospective on the development of the Ada programming language written by the individual who was the government lead at DARPA for much of the time of its development (Colonel William A. Whitaker). I found it humorous. Perhaps you will too. ----- The ARPANET connection was inaugurated during a visit to RSRE by Her Royal Highness Queen Elizabeth II. Her Majesty sent a message of greetings to the members of the HOLWG from her net account, EIIR, by pressing a red velvet Royal carriage return. Because the address list was long, it took about 45 seconds for the confirmation to come back, 45 seconds of dead air. Prince Philip remarked, joking respectfully, that it looked like she broke it. ----- I suspect that we've "all been there" at one time or another! paul

8 years, 5 months

What is vintage (was: Why don't you respect the mail threads?!)

by billdegnan＠gmail.com

What is vintage computing? I think it's the IBM PC. Anything else is not vintage computing. b On Thu, Feb 22, 2018 at 3:36 PM, Evan Koblentz via cctalk < cctalk at classiccmp.org> wrote: > It's gone meta: people threadjacking a thread about threadjacking. Now > it's some posters trying to show others who is smartest about arcane > details of obsolete email software. >

8 years, 5 months

SimH DECtape vs. Tops-10 [was RE: Writing emulators [Was: Re: VCF PNW 2018: Pictures!]]

by RichA＠livingcomputers.org

From: Paul Koning Sent: Wednesday, February 21, 2018 6:41 AM > And while there is roughly-accurate simulation of DECtape in SIMH (presumably > for TOPS-10 overlapped seek to work?) It's not for Tops-10. SimH only provides the KS-10 processor[1], so DECtape is not a possible peripheral. Rich [1] Although there is a KA-10 in the works.

8 years, 5 months

Why don't you respect the mail threads?!

by jnc＠mercury.lcs.mit.edu

> From: Grant Taylor > I'm on a list where it seems as if a frequent contributer uses an MUA > that does not send In-Reply-To or References headers at all. It doesn't > even send a User-Agent header. *sigh* That's me, I expect. I used to use a TOPS-20 email reader called MM, and when I moved my email to a Unix machine, there was a version of MM I used there, then something happened (I forget what) and I couldn't use that any more. I do have access to a more modern email reader (Eudora), but don't like it; I just stick with old, simple stuff I know how to use. I don't have the spare brain cells / energy to switch. After going through I've-forgotten-how-many editors (starting with TECO, then 'ed'), text formatting systems, operating systems, email readers, etc, etc I have a _very_ simple rule about switching software: is the old stuff I'm using utterly, irretrievably unusable? If not, ignore the new stuff. Eventually it'll be obsolete too. And in the meantime, I'll have saved countless cycles by not going through the hassle of switching to it. Life's too short. Noel

8 years, 5 months

DEC Pro 350

by kurt＠hamm.me

Well, I bought that DEC Pro 350 on ebay. It initially booted up and I got the error screen. The error code I found on the Internet was related to the hard disk controller. So, I thought I just needed someone to sell/give me some systems disks for the unit and I could try to setup the drive again if it still functioned. Then, it after a couple of restarts (I re-seated the boards and cleaned the connectors) it stopped showing the error screen (with picture of the computer). All the diagnostic lights are red on the back and nothing ever shows on the screen. The power comes on and then nothing. If anyone has any thoughts, I would appreciate it. I knew the history of this type of computer and figured it was a long shot. I am just disappointed to have gotten really nowhere with it. Thanks! Kurt

8 years, 5 months

DEC Pro 350

by jnc＠mercury.lcs.mit.edu

> From: Kurt Hamm > If anyone has any thoughts, I would appreciate it. You probably already know this, but... My sense is that a collector of classic computers has to be able to diagnose and repair at the component level - get in there with an oscilloscope and a set of prints (creating the latter, if need be), and find the busted chip/transistor. It's like collecting old cars - if you collect old cars, you have to be able to work on them (or like Jay Leno, be rich and hire someone else who can - although given that Jay worked at an auto dealer 'back in the day', he apparently does know a fair amount). Which isn't going to help much with this particular problem, maybe some of the other replies will help. Noel

8 years, 5 months

Honeywell DDP-516 console on Ebay - PLEASE don't bid!

by hachti＠hachti.de

Hi folks, I recently discovered a complete Honeywell DDP-516 console on Ebay. It is a charity auction, ending tomorrow. I am the high bidder (hachti, 600-some points) and BEG YOU ALL NOT TO BID on it! I already entered a crazy high bid anyway bid so please don't bid on it. I am one of the very very very few people who have an actual DDP-516 machine and can really use this as a spare for a real machine. Again, PLEASE refrain from bidding up this item! If you are the owner of a "headless" machine who is in need for the front panel: please contact me, so we can avoid an explosion on Ebay. Thank you very much. Kind regards Philipp

8 years, 5 months

IBM Rigid Cleaning Tool 2200574

by aek＠bitsavers.org

https://www.ebay.com/itm/232678490872 anyone run across a volume source for these? They appear to be IBM's version of the Texsleeve

8 years, 5 months

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