test-drb June 2006

test-drb@ccmp.vtda.org

220 participants
447 discussions

SBC6120 (a build-it-yourself PDP-8 clone) Last Buy and End of Life

by bob＠jfcl.com

>woodelf bfranchuk at jetnet.ab.ca wrote: >I used a PDP8/S once, does that I mean I need to slow the CPU down? The SBC6120 is fully static; you can reduce the clock speed to anything you're comfortable with :-) On a more serious note along these lines - the HD6120 datasheet gives a maximum clock of 5.1MHz, however DEC ran the DECmate (-II/PC278, that is; I don't know about the -I/VT278) at 8MHz. I used to ship 5MHz crystals with the full kits just to be on the safe side, but I've always run mine at 8MHz and I know many other people who have done the same. Never found one that's failed to work at this speed. Does anybody know if DEC was using specially selected 6120s, or is the datasheet just conservative? Bob

17 years, 11 months

[midatlanticretro] Sad news -- Alan Kotok

by allain＠panix.com

A not-so-subtle reminder to keep my weight down. If you can find a better copy of the picture on this page, http://www-db.stanford.edu/pub/voy/museum/pictures/display/3-3.htm (it's in 'Digital at Work') Alan is the chubbiest guy on the team of 14. see also here for Alan http://research.microsoft.com/~gbell/Digital/timeline/1965-3.htm John A. FYI where on the Stanford page it says: "Does someone recognize the others?" They are (seated) Lydia McKalip, Bill Coburn, Ken Senior, Ken Fitzgerald, Norman Hurst, Harris Hyman (standing) Peter Samson, Leo Gossell, Gordon Bell, Alan Kotok, Russ Doane, Bill Kellicker, Bob Reed, George Vogelsang.

17 years, 11 months

Altair32-Cromemco Dazzler Pictures

by rcini＠optonline.net

All: I thought that some of you might like to see screen shots of several Cromemco Dazzler games and programs running on the Altair32, sent to me by a long-time contributor to the project: http://www.altair32.com/Altair32links.htm (Scroll down to the "Submitted Files" section). I don't have the working binaries yet but when I do, I will post them. This contributor also added support for the Cromemco joystick through the keyboard. Neat! Rich Rich Cini Collector of classic computers Lead engineer, Altair32 Emulator Web site: <http://highgate.comm.sfu.ca/~rcini/classiccmp/> http://highgate.comm.sfu.ca/~rcini/classiccmp/ Web site: http://www.altair32.com/ /***************************************************/

17 years, 11 months

SBC6120 (a build-it-yourself PDP-8 clone) Last Buy and End of Life

by doug.jackson＠ewa-australia.com

> I wish the fact that the PDP-8 clone can be hooked upto a IDE drive > and you have real PDP-8 TTY I/O was more implied at the time. I would > like to get this clone ( PCB & custiom parts) but I still feel with out > a paper tape reader/punch you just can't do software right with the 8. > PS. And the idea of using a PC for a smart terminal *SUCKS*. I brought one of Bob's boards about 18 months ago, and it works a treat. The board has a fully supported IDE interface that allows it to "just Work" with an IDE drive. If you use an adapter, it will work with a CF Card as well. On the terminal front, being a PDP-8 clone, it does need a console of some description. While it does not provide a current loop interface for the ASR-33, its RS-232 serial just plugs into my VT52. I highly commend this board to anybody considering one. It sure is smaller than the PDP-8i that I played with as a kid. regards Doug -- Doug Jackson, MAIPM, MIEEE Senior Information Security Consultant EWA-AUSTRALIA PO Box 6308 O'Connor ACT 2602 Level 1, 214 Northbourne Ave, Braddon ACT 2612 Tel: +61 (0)2 6230 6833 Fax: +61 (0)2 6230 5833 Mob: +61 (0)414 986 878 http://www.ewa-australia.com ============================================ IMPORTANT: This email remains the property of Electronic Warfare Associates - Australia. If you have received this email in error, you are requested to contact doug.jackson at ewa-australia.com or Ph +61 2 62306833 and delete the email. This message is not to be copied or distributed to other parties without the express permission of the author. Any personal information in this email must be handled in accordance with the Privacy Act 1988 (Cth). ============================================

17 years, 11 months

How silly can collectors be?

by cheri-post＠web.de

> -----Urspr?ngliche Nachricht----- > Von: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org> > Gesendet: 04.06.06 18:34:04 > An: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org> > Betreff: Re: How silly can collectors be? > On Saturday 03 June 2006 15:06, Joost van de Griek wrote: > > On 6/1/06 11:35 PM, Patrick Finnegan wrote: > > > Ok, so I thought that the prices on the S/370 consoles were silly, but > > > at least you were getting something which was obscure and hard to > > > reproduce. > > > > > > How much is a small piece of aluminum with some lettering on it worth? > > > Aparently, between $125 and $411... > > > > Once something is collectible, value is very hard to establish. While such > > a price for a "small piece of aluminium with some lettering on it" may seem > > outrageous to you, if it is the final missing piece in someone's > > collection, that price may be peanuts compared to the increase of the > > complete collection's value. > > I'd agree with you, but I'm pretty sure that in at least fordkdkk, that's > probably not the case, from what I've learned from other collectors. > > Pat In the above case, I'd say that some people apparently just have too much money and do not really know what to do with it.... Pierre > -- > Purdue University ITAP/RCAC --- http://www.rcac.purdue.edu/ > The Computer Refuge --- http://computer-refuge.org ______________________________________________________________ Verschicken Sie romantische, coole und witzige Bilder per SMS! Jetzt bei WEB.DE FreeMail: http://f.web.de/?mc=021193

17 years, 11 months

Sad news -- Alan Kotok

by evan＠snarc.net

http://www.nytimes.com/2006/06/03/business/03kotok.html

17 years, 11 months

RCA WO-33A Manual available

by dakotadv＠yahoo.com

Yeah if you have that manual I'm interested ! Thanks ! __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com

17 years, 11 months

WTB: Compaq Portable 3 or similar

by trs-80＠cableone.net

Hi all, Still looking for a good working Compaq Portable 3 or similar Compaq "lunchbox" portable... preferably one of the plasma screen models. I believe they also made 286 and 386 versions in these. I'll pay a fair price. Will also consider a Compaq Portable 1 or 2 , the CRT versions, if cheap enough. Let me know... Thanks, Steve trs-80 at cableone.net

17 years, 11 months

MATE-N-LOK 8p flat connector availability

by pete＠dunnington.plus.com

On Jun 3 2006, 23:09, Tony Duell wrote: > I am looking for a somewhat similar connector. I am not sure if it's > AMP or Molex, but I suspect it's one or the other. > > It has 5 pins in a straight line. The pins look to be the normal > 0.093" ones. The face of the socket housing looks a bit like this: > > > /o\ > |o| > |o| > |o| > |o| > - > > That is, 5 pins in a line, with one end of the housing pointed for > polarisation. I'm pretty sure this isn't AMP, but it looks like a Molex 0.093" Power Connector. A lot of these are made in panel-mount as well as free-hanging styles, but the five-way is only made as free-hanging according to my old Molex catalogue. However, it says there's a mating unshrouded vertical header in their 1840 series, and "vertical headers may be assembled using PC tail terminals in standard housing". The receptacle part is 03-09-1052, it's 27.2mm long x 6.2mm wide; the plug part is 03-09-2052, 30.0mm long x 8.6mm wide. Each pin is rated 9A at 250V in these housings. -- Pete Peter Turnbull Network Manager University of York

17 years, 11 months

ISO: Wide HVD SCSI SBUS

by dgy＠DakotaCom.Net

Hi, I'm looking for two or three HVD wide SCSI SBUS cards to connect some storage arrays to an SS20. Does anyone have any that they would care to part with? Thanks! --don

17 years, 11 months

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test-drb June 2006