test-drb January 2004

test-drb@ccmp.vtda.org

290 participants
643 discussions

by GOOI＠oce.nl

Correct. MM is for core, MS is for chips. I was too lazy to check what I was writing. I even have MM11-LP (96 kWords) in my 11/35. I passed the morse code exam last December, and since I had to choose a new call, the postfix PDP seemed a nice one. "PDP" in morse code is not the best choice, but I just could not resist. I am not active on HF, waiting until Spring to install a antenna (aerial). nice weekend all, - Henk > -----Original Message----- > From: Frank Arnold [mailto:fm.arnold@gmx.net] > Sent: donderdag 22 januari 2004 20:10 > To: cctech(a)classiccmp.org > Subject: RE: M7891 switch settings? (unibus) > > > >From: Gooijen H <GOOI(a)oce.nl> > >Subject: RE: M7891 switch settings? (unibus) > > > >I have scanned 11/34 field maintenance print sets. > >They are at http://www.mainecoon.com/classiccmp/ > >And if I am not mistaken the MOS memory is there too. > >AFAIK is MS11 correct, just the suffix letter makes > >all the difference (core, 11/44 MOS, etc.) > > MS11-xx is alway semiconductor memory of different capacities > and speed as specified by the last two caracters > (to the best of my knowledge...) > > MM11-xx are the true core memories with the ferrite cores. > (Wanna see a MM11-YP, 32k x 18 core-stack? Then bump the > cofee-machine) > > several years after Mos memory became available people were > still talking about core if they just meant the mainstorage > or R/W-Memory, regardless of the technology it was built with. > > > > > gd luck, > >- Henk, PA8PDP > ^^^ > Heh heh, on what frequency is it radiating? > Do you remember the little proggys that would make a pdp > produce sound on an AM-receiver not tuned to any station? > > >> -----Original Message----- > >> From: Brad Parker [mailto:brad@heeltoe.com] > >> Sent: donderdag 22 januari 2004 1:18 > >> To: arcarlini(a)iee.org; General Discussion: On-Topic and > >> Off-Topic Posts > >> Subject: Re: M7891 switch settings? (unibus) > >> > >> > >> "Antonio Carlini" wrote: > >> >> Does anyone have a manual for an M7891 (128kx18 MOS memory)? > >> > > >> >Is that an MS11 of some sort? > > if it is 128kx18, then it is a MS11-LD, and has an integrated parity > controller. I should have the maintenancemanual somwhere if > it of use to > anyone. I will sent a free copy to aomeone who likes to > convert it to .pdf > file to be put on-line. (Will have to dig it from the garage, however) > > Frank

20 years, 6 months

Egregious VMS newbie questions

by msokolov＠ivan.Harhan.ORG

Witchy <witchy(a)binarydinosaurs.co.uk> wrote: > Also, if it's looking for a cluster then shut it down to get to the > dead-sergeant prompt (>>>) and type SET VAXCLUSTER 0 to turn off the > clustering software. The console ROM has no such command. The ROM knows nothing about VMS and clusters. MS

20 years, 6 months

Old device (eg vacuum tube) documentation

by mouse＠Rodents.Montreal.QC.CA

While digging out the keyboard to scan (see my recent message about that), I noticed that I had a rather old book that perhaps some here might be interested in information from. It's an RCA reference book from 1963, and it contains a lot of data on various types of vacuum tubes and semiconductor devices of the day, >from vacuum tubes still in use today like the 6L6 I think I saw mentioned recently to picture tubes (even a few colour types) to tube types I've never heard of like "nuvistor" and "novar". There are a number of cross-reference tables of various things, indexed by various useful things. There is a pile of somewhat similar information about semiconductor devices (though a good deal less in terms of pages in the book) and a number of pages on batteries. There are then several pages of ads for devices like multimeters and oscilloscopes and signal generators, ending with a calendar for 1963 and a few pages of address-book. There are a few mildly interesting one-page things, like one giving a number of RCA sales offices, complete with phone numbers like "WHitehall 4-2900". I would take a good deal of persuading to part with the book itself. But if anyone is interested in data from it, including scans of various portions, drop me a line. /~\ The ASCII der Mouse \ / Ribbon Campaign X Against HTML mouse(a)rodents.montreal.qc.ca / \ Email! 7D C8 61 52 5D E7 2D 39 4E F1 31 3E E8 B3 27 4B

20 years, 6 months

E-bay: Transputer development board

by rigdonj＠cfl.rr.com

<http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=2590650055&category=40004> joe

20 years, 6 months

Aquarius II on eBay didn't sell at over $400

by pete＠dunnington.u-net.com

On Jan 19, 20:49, Witchy wrote: > > PS. Fix your mailer! Yours are the only messages that default to reply to > > you and the list (boo!) > > Nothing to do with me I don't think - I'm on bog-standard outlook 2000 here > and haven't changed settings for years. It *is* your mailer. It appears to be putting an unneccessary "Reply-to:" header in, and when the list software sets its "Reply-To:", it gets concatenated to yours instead of replacing it: From: "Witchy" <witchy(a)binarydinosaurs.co.uk> To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk(a)classiccmp.org> Date: Mon, 19 Jan 2004 20:49:49 -0000 Message-ID: <EAELLACDNKNOEIOECBEEOEJBEJAA.witchy(a)binarydinosaurs.co.uk> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" X-BeenThere: cctalk(a)classiccmp.org X-Mailman-Version: 2.1.2 Precedence: list Reply-To: witchy(a)binarydinosaurs.co.uk, "General Discussion: On-Topic and Off-Topic Posts" <cctalk(a)classiccmp.org> Given your Outlook puts in the correct "From:" header, adding a "Reply-To:" is redundant and arguably incorrect. For a short while, late last year, I had my MUA add a "Reply-To:" and the result was exactly the same. A few other people had the same problem, and appear to have fixed it. -- Pete Peter Turnbull Network Manager University of York

20 years, 6 months

Mitac LIC-2001A Little Intelligent Computer

by pete＠dunnington.u-net.com

On Jan 22, 12:15, Doc Shipley wrote: > On Jan 22, 2004, at 11:54 AM, Vintage Computer Festival wrote: > > On Thu, 22 Jan 2004, ed sharpe wrote: > > > > BTW, you have the Reply-To: set in your mailer as well. > > > > (I'm going to pick you guys off one at a time until I've got you > > all... ;) > > <cough>netcop<cough> Maybe we should all turn on our "Reply-To:" headers and see what happens. We could all set them to "vcf(a)siconic.com" so the results can be properly monitored ;-) -- Pete Peter Turnbull Network Manager University of York

20 years, 6 months

Quicky SGI Question (skin removal)

by dholland＠woh.rr.com

Hi, A quick question (should even be on topic... theoretically... ) I've a SGI Crimson, in a older PowerSeries 4D frame that I need to move >from upstairs to downstairs. Looks alot like so: http://www.schrotthal.de/sgi/4d/440_powerseries.jpg Anyways, cause its little ol' me, I need to get it as light as possible, so I don't kill myself (or drop it) trying to get it down the stairs. I did _completely_ disassemble the thing to dust it, and get it upstairs in the first place. I've already pulled the boards/drives which relieves a lot of the weight, however, I also want to pull the PSU to relieve its weight, then hopefully I can carry the "carcass" downstairs by myself. However, for the life of me, I can't remember how the devil I got the skins off to get access to the PSU. (And I'm still "googling") Anyone know? Thanks, David PS: If this isn't quite on topic, my apologies, I'll quietly go back to poking and prodding... PPS: If it is on topic, and anyone has a set of proper red Crimson skins they'd like to unload, please let me know. :-)

20 years, 6 months

brew-your-own-unibus boards?

by msokolov＠ivan.Harhan.ORG

Here's my take on the issue of not being able to use standard drivers and receivers for UNIBUS and Q-bus. Aren't both of these buses old enough that DEC made devices for both of them using only discrete logic, no ASICs? If they did make UNIBUS and Q-bus devices w/o ASICs using only standard discrete logic, as I'm sure they did, what did they use for drivers and receivers? MS

20 years, 6 months

brew-your-own-unibus boards?

by pete＠dunnington.u-net.com

On Jan 22, 13:27, Joe R. wrote: > I missed the first part of this discussion and I just found this message > by chance. However it is NOT TTL, it's DCL according to my 1971 Signetics > Digital 8000 Series TTl/MSI catalog. Since it's not TTL this catalog > doesn't have a data sheet for it > >----- Original Message ----- > >From: "Patrick Finnegan" <pat(a)computer-refuge.org> > >To: "General Discussion: On-Topic and Off-Topic Posts" > ><cctalk(a)classiccmp.org> > >Sent: Wednesday, January 21, 2004 12:10 AM > >Subject: Re: brew-your-own-unibus boards? > > > > > >> On Tuesday 20 January 2004 18:06, Tony Duell wrote: > >> > Driver : 8881 (quad 2 input NAND with open collector outputs) > >> > >> Does anyone have a spec sheet on the 8881's? The essential data is in the back of most QBus handbooks, along with data for 8640 and 8641. 8881 is a quad 2-input NAND bus driver. 8640 is a quad 2-input NOR bus receiver, 8641 is a quad bus transceiver. The driver outputs are open-collector. Bus Driver 8881, 8641: Input high voltage Vih 2.0V min Input low voltage Vil 0.8V max Input high current Iih 60uA max [note 6] Input low current Iih -2.0mA max [note 6] Output low voltage, 70mA sink Vol 0.8V max [note 1] Output high leakage current at 3.5V Ioh 25uA max [notes 1,3] Propagation delay to low state Tpdl 25ns max [notes 1,5] Propagation delay to high state Tpdh 35ns max [notes 1,5] 1. This is a critical parameter for use on the I/O bus. All other parameters ar shown for reference only. 2. This is equivalent to being capable of driving 16 unit loads of standard 7400 series TTL integrated circuits. 3. Current flow is defined as positive if into the terminal. 4. Conditions of load are 390 ohms to +5V and and 1.6 k ohms in paralel with 15pF to ground for 10ns min and 50pF for 35ns max. 5. Times are measured from 1.5V level on input to 1.5V level on output. 6. This is equivalent to 1.25 standard TTL unit loading of input. 8881 Pinout: ___ ___ | U | Y1 |1 14| Vcc A1 |2 13| Y4 B1 |3 12| A4 Y2 |4 11| B4 A2 |5 10| Y3 B2 |6 9| A3 GND |7 8| B3 |_______| While I was looking up my NatSemi Interface databook, I notice it lists the DS8640 as an exact replacement for an SP380 (quad 2-input NOR bus receiver), and an 8T380 is the same thing. An 8881 is very similar to a 7401. The main difference is that bus drivers can typically sink 50mA Iol or so at Vol, whereas a 7401 is only rated for 16mA -- about half what you would expect to need. The speeds are about the same: 7401 has faster Tpdl (15ns max versus 25ns max), but slightly slower Tphl (typically 35ns, max 45ns, albeit for a slightly lower threshold of 1.3V, versus 35ns max for 1.5V thresholds). -- Pete Peter Turnbull Network Manager University of York

20 years, 6 months

Looking for Claris AtEase software for classic macs

by willisj＠atlantis.clogic-int.com

See subject line. -- John Willis Coherent Logic Development willisj(a)atlantis.clogic-int.com

20 years, 6 months

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test-drb January 2004