Re: DIBOL manual

2019-10-15 Thread Noel Chiappa via cctalk
> From: Chuck Guzis > One could argue that it's just as similar to FORTRAN (cf. computed GOTO > and logical IF statements). It probably worth pointing out that I never used COBOL, and have little knowledge of it. So when one reads "it is vaguely reminiscent of COBOL, as it has a

Re: DIBOL manual

2019-10-13 Thread Noel Chiappa via cctalk
> From: Chuck Guzis > Calling DIBOL "COBOL-like" is stretching things quite a bit. OK, so I'll change it to "vaguely COBOL-like"... :-) Seriously, though, there some high-level similarities, and not just the purpose... Noel

DIBOL manual

2019-10-13 Thread Noel Chiappa via cctalk
I recently picked up a copy of "CTS-300 - DIBOL Language Reference Manual" (because when I went to do a CHWiki page for the language: http://gunkies.org/wiki/DIBOL I could find almost nothing about it online); does anyone have enough of a use for this that I should put it in the high-priority

Re: Able document at VCF Midwest

2019-10-07 Thread Noel Chiappa via cctalk
> From: Jason T > didn't know you were at the show. Thanks for coming out! I wasn't! :-) This is via Paul A, who was there. I don't recall where they were before they got free-piled (he told me who it was who had it, but I had no particular reason to store those bits in my memory).

Re: Able document at VCF Midwest

2019-10-06 Thread Noel Chiappa via cctalk
> From: Christian Corti >> we only have those for the UNIVERTER and QNIVERTER > And what about the stuff on bitsavers? That's where I got my copies of the UNIVERTER and QNIVERTER docs. I guess I missed grabbing a few; and I see a few more have been added since I last looked:

Able document at VCF Midwest

2019-10-05 Thread Noel Chiappa via cctalk
This is a long shot, but... There was an Able Computer document at VCF Midwest, and through a miscommunication, it wound up on the 'free' pile. Did anyone here get it? If so, I'd like to try and get it scanned in, and made available. The thing is that documentation for Able products is

Re: LISP implementations on small machines

2019-10-04 Thread Noel Chiappa via cctalk
> From: Eric Smith > Code can be executed from the MMU PAR registers on processors with > 22-bit addressing (11/23, 11/24, 11/44, 11/70, and J-11 based systems). My QBUS machine is apart at the moment, so I can't verify this before posting, but I don't think this hack works on the

Re: LISP implementations on small machines

2019-10-03 Thread Noel Chiappa via cctalk
> From: Paul Koning > Some early machines, the PDP-6 I believe is an example, have > "registers" in the ISA but they actually correspond to specific parts > of main memory. The PDP-6 and KA10 (basically a re-implementation of the PDP-6 architecture) both had cheapo versions where

Need DM11 documentation

2019-10-02 Thread Noel Chiappa via cctalk
Hi, does anyone out there have any DM11 documentation? The only thing I could find online is the "DM11-BB model control option manual" (DEC-11-HDMBA-A-D) - and it's the impetus for this request, actually. One page 1-5, pg. 15 of the PDF, it has a diagram of which boards go into which slots on the

Re: Course materials for MIT 6.031 (c. 1974) scanned

2019-10-01 Thread Noel Chiappa via cctalk
> From: Josh Dersch > Any idea what ultimately happened to that 11/45? MIT offered it to me as a gift, but I was a total idiot (and also didn't have future vision), and as I was so busy with the IETF/IESG at the time (which might have been the right call, given how the Internet - note

Re: Course materials for MIT 6.031 (c. 1974) scanned

2019-09-30 Thread Noel Chiappa via cctalk
> From: Josh Dersch > descriptions of the PDP-11/45 DELPHI system > ... > moves on to Algol and LISP I later became the 'owner' of that PDP-11/45 (our group at LCS traded an -11/40, which EECS wanted for their DECSystem-20, for it). That Algol and LISP were later moved to Unix

Re: Cleaning an old keyboard

2019-09-25 Thread Noel Chiappa via cctalk
> From: Al Kossow >> This is documented in NASA's official history of Project Mercury, for >> which it was invented. > could you post a pointer to the document where this appears? If the reference is to: Lloyd S. Swenson, James M. Grimwood, Charles C. Alexander; "This New

Re: DJ11 Maintenance Manual available

2019-09-25 Thread Noel Chiappa via cctalk
> From: Pierre Gebhardt > there seems to be a copy of the maintenance manual in the unibus-folder > on bitsavers: EK-DJ11-MM-003_DJ11_Maint_Man_Aug76.pdf Argh! I looked in that folder, but didn't see it! (And Manx says its not online, either.) > Would be worth checking the

Re: DEC RP04 service manual available

2019-09-24 Thread Noel Chiappa via cctalk
> From: Evan Koblentz > I know of two RP04 drives in the wild. One belongs to a private > collector. VCF has the other. Right, but does VCF need it scanned? Oh, one other place that might have one: the MIT MC KL10 had a couple of RP04's; when it was taken away to Scandanavia, they

DJ11 Maintenance Manual available

2019-09-24 Thread Noel Chiappa via cctalk
So, I have a copy of the maintenance manual for the DJ11; is this something anyone needs?n If so, I'll move it up the scan queue. Noel

M7821 variants

2019-09-24 Thread Noel Chiappa via cctalk
So I just discovered that there are three wildly different variants of the M7821 Interrupt Control card. More here, with images: http://gunkies.org/wiki/M782_Interrupt_Control I'll have to dredge around and see if I can find circuit diagrams for them all; they are wildly different, the -C

sa...@elecplus.com

2019-09-24 Thread Noel Chiappa via cctalk
Re: Cleaning an old keyboard Hey, that spiel would be a good start to a great article on the CHWiki, 'Cleaning keyboards'! (Not sure if any of the other replies contained anything worth picking up.) Noel

Re: Manx entry update

2019-09-23 Thread Noel Chiappa via cctalk
> From: Jim Stephens > I don't know how to contact the maintainer for manx There was discussion recently about that, and I did manage (with help from someone here who provided his email - thanks muchly!) to reach him. We were discussing how I could help update things, but a hurricane

Re: phone systems, old and less-old

2019-09-18 Thread Noel Chiappa via cctalk
> From: Kevin Monceaux > I'm not sure what it is about phone systems. ... I don't know why I'm > doing this. Oh, and the rest of us have a real use/need for old, slow, small (by modern standards) systems that use a ton of power? :-) Noel

DEC RP04 service manual available

2019-09-18 Thread Noel Chiappa via cctalk
So I have just acquired a copy of the service manual for the RP04 drive (ISS model 733). Does anyone have an immediate need to look at this? If so, I can put it on the top of the 'to scan' stack. Noel

Re: Looking for schematics of QBUS 32KW memory module.

2019-09-08 Thread Noel Chiappa via cctalk
> From: Mister PDP > listed back there were numerous bad addresses all over memory. > ... > I cannot find schematics for any of the boards You can repair MOS memory boards where the board is basically working, but just has some failing memory chips, without schematics. First you

Re: Too many DEC binders

2019-08-26 Thread Noel Chiappa via cctalk
> From: Antonio Carlini > I think the best thing to do would be to get the data into manx. Manx > feels like the right tool for finding manuals. Yes, I agree. Replicating the data, in a system which isn't organized to hold it (i.e. the CHWiki) would be a desperation move, only to be

Re: Too many DEC binders

2019-08-25 Thread Noel Chiappa via cctalk
> From: Al Kossow > I don't even have time to deal with all of my paper. Understood. A huge 'thank you' for all the work you have put in, to saving and making available a massive quantity of old documentation. Given that we have stuff scattered across a number of sites, rather than

Re: Shipping from Europe to USA

2019-08-25 Thread Noel Chiappa via cctalk
> From: Jon Elson > I have NEVER had even the SLIGHTEST damage with FedEx, even their > ground service. This could just be statistical chance This. I once had FexEx Ground destroy the entire packaging of a shipment (one of those rigid plastic tubs, sealed closed with those tension

Re: KE11-A craze (Was: Current MANX location)

2019-08-23 Thread Noel Chiappa via cctalk
> From: Ethan Dicks >> Speaking of KE11-A's, does anyone know what's behind the bidding wars >> on recent eBay KE11-A component board listings, e.g.: >> >> https://www.ebay.com/itm/372685033144 > Perhaps someone has a broken KE11-A Must be two such people, though - I

Re: bit-slice and microcode discussion list

2019-08-23 Thread Noel Chiappa via cctalk
> From: Jon Elson >> On 08/22/2019 12:47 PM, Tom Uban via cctalk wrote: >> On a possible related note, I am looking for information on converting >> CISC instructions to VLIW RISC. > I think it might end up looking a bit like the optimizers that were > used on drum

KE11-A craze (Was: Current MANX location)

2019-08-22 Thread Noel Chiappa via cctalk
> KE11-A Field Maintenance Print Set > http://manx-docs.org/details.php/1,9358 Speaking of KE11-A's, does anyone know what's behind the bidding wars on recent eBay KE11-A component board listings, e.g.: https://www.ebay.com/itm/372685033144 AFAIK, the boards (a complete set is an

KE11-B manuals (Was: Current MANX location)

2019-08-22 Thread Noel Chiappa via cctalk
> KE11-B Field Maintenance Print Set > http://manx-docs.org/details.php/1,9361 > the KE11-B I also just found (IIRC, on one of the collections they list > as indexed). Oh, speaking of KE11-B's, does anyone have either the Technical or User's manual for it (I couldn't locate

RE: Current MANX location

2019-08-21 Thread Noel Chiappa via cctalk
> They try and list all known DEC manuals and print sets Ooops, my mistake; the coverage is much wider than that (they default to DEC). On the home page, there's a pull-down menu labelled "Company", which lists over 100. > From: "Paul Birkel" >> the KE11-B I also just found

Re: Current MANX location

2019-08-21 Thread Noel Chiappa via cctalk
> From: Zane Healy > What I found really odd was that it had part numbers and manual names > from one version, but when I clicked on the links it said no known > version online. They try and list all known DEC manuals and print sets that ever existed, so just because something is

Re: Current MANX location

2019-08-20 Thread Noel Chiappa via cctalk
> From: Glen Slick > This? Yes; thanks! I don't know it didn't show up in my Web searches - I tried a number of different things, no luck. Also, http://manx.classiccmp.org/ (which is the medium-old URL I had for it) redirects to something that has no working link to Manx; probably

Current MANX location

2019-08-19 Thread Noel Chiappa via cctalk
Wasn't MANX supposed to be coming back up after moving? Did that never happen? Noel

Re: Pinout for current loop interface

2019-08-17 Thread Noel Chiappa via cctalk
> From: Charles Morris > Is there any standard pinout for 20 ma current loop using a DB-25 > connector, analogous to the well-documents RS-232 serial interface? > ... > Or would you recommend I use a different connector entirely? .. Maybe a > Jones 4-pin would make more

Re: GW-DEC-1: A New DEC Prototyping Board

2019-08-16 Thread Noel Chiappa via cctalk
> From: Brent Hilpert > I've seen pieces of HP high-end lab equipment from thru the 60s that > used tin plating on the PCB edge fingers, mating into gold-plated edge > connectors on the backplane. ISTR that DEC used bronze contacts in their backplanes, but basically all the

Re: Archiving information, was Re: ADM-3A question

2019-08-16 Thread Noel Chiappa via cctalk
> From: Steven M Jones > imagine that a law is passed in a far away land, and the site owner > decides it's is too risky to bother with, and they then take the entire > site down - wiki and fora - with no warning and no access to the > material... > .. > I would

Google site ordering (Was: Archiving information)

2019-08-16 Thread Noel Chiappa via cctalk
> From: Christian Corti >> An additional issue, I think, is that Google is deprecating sites that >> use HTTP, versus HTTPS. > Not true, in contrary, Google even crawls through FTP sites :-) I did say "deprecate", not 'ignore totally'! :-) Here's what I know: An e-commerce site

Re: Archiving information, was Re: ADM-3A question

2019-08-16 Thread Noel Chiappa via cctalk
> From: Eric Christopherson >> Anyway, the whole 'how do we find the info' is a part of why I started >> working on CHWiki, once I discovered it > Psst: it would've been a good idea to share the URL to CHWiki. Well, that passing reference wasn't an attempt to get people to go

Re: Archiving information, was Re: ADM-3A question

2019-08-15 Thread Noel Chiappa via cctalk
> From: Seth J. Morabito >> having stuff scattered across a zillion personal pages (be they blogs, >> or whatever) is going to make it hard to find the useful one when >> needed > The sheer vastness of content available, combined with a Google > monoculture, combined with

Re: GW-DEC-1: A New DEC Prototyping Board

2019-08-15 Thread Noel Chiappa via cctalk
> From: Paul Birkel > But which bus? There are three ... So I'm clearly not very awake this morning. I can only think of two major quad-width DEC standard slots - SPC (UNIBUS) and dual QBUS. What's the third - PMI? (MUD is hex, as is Fastbus.) Or OMNIBUS, if we're not restricted to

Re: XXDP on PDP-11/03

2019-08-14 Thread Noel Chiappa via cctalk
> From: Brent Hilpert > I wouldn't have thought any of the (various 11 CPU) ODTs used > interrupts for the console They don't. > Don't know which CPU Noel was referring to. The OP was having problems with an LSI-11 (M7264 quad card); I was working with an LSI-11/2 (M7270 dual

Re: XXDP on PDP-11/03

2019-08-14 Thread Noel Chiappa via cctalk
> From: Allison Parent > ! Seriously? ... Memory of some form there is a must. I don't know about you, but my approach in looking into hardware issues is often to start by reducing things to the simplest possible configuration that exhibits the failure. (I asssume the various reasons

Re: XXDP on PDP-11/03

2019-08-14 Thread Noel Chiappa via cctalk
> From: Jonathan (systems_glitch) > Yep, fun times on LSI-11/2! Heh, this one was _utterly trivial_ compared to the 'must have working memory at 0 or ODT won't start'! (I don't think I've ever seen that one in DEC documentation anywhere...) Noel

Re: ADM-3A question

2019-08-14 Thread Noel Chiappa via cctalk
>> Al Kossow via cctalk writes: >> Buried in a filing cabinet in the basement with a sign that says >> "Beware of Leopard". Good one! > From: Seth J. Morabito > I'm going to respectfully disagree .. the proliferation of modern > JavaScript frameworks that are designed

Re: XXDP on PDP-11/03

2019-08-14 Thread Noel Chiappa via cctalk
> From: Paul Koning > Isn't the interrupt disabled by RESET? Nope. On the -11/03 and KDF11-A, BEVNT is wired straight into the CPU, and there's no internal register to control it. The BDV11 does have a register which can enable/disable the LTC (it connects BEVNT to ground via a

Re: XXDP on PDP-11/03

2019-08-14 Thread Noel Chiappa via cctalk
> From: Jerry Weiss > I turned BEVENT off and it boots successfully. I am not immediately > sure why this is necessary. If an LTC interrupt happens before the OS has set up the LTC vector, etc, hilarity ensues. E.g. the LTC has to be turned off before UNIX V6 will boot on an -11/23:

Re: DEC VT20 boot device

2019-08-12 Thread Noel Chiappa via cctalk
> I didn't fully disassamble the program I have now done so; the -YK is _exactly_ the same as the -YA (the later ones, which are minorly different from what's in the manual), except that the HSR address (177550) has been replaced as the primary device address by that of DL11 #1, in the second

Re: DEC VT20 boot device

2019-08-11 Thread Noel Chiappa via cctalk
> From: Paul Birkel > Apparently the VT20 used the M792-YK as its bootstrap; the Field Guide > is silent regarding the boot device and M792 documentation stops > earlier in the series of variants. An M792-YK recently sold on eBait; I didn't get it, but I did manage to get the

Re: List fault analysis (Was: Test)

2019-08-11 Thread Noel Chiappa via cctalk
> From: Charles Morris > my last couple of posts don't seem to be showing up? I see several posts from you. To check suspected failures, look in the archive: http://www.classiccmp.org/pipermail/cctalk/ because just because you're not getting a personal email copy, doesn't mean it

Re: eBay: PDP-8/A KL8A serial line card

2019-08-07 Thread Noel Chiappa via cctalk
> From: Paul Anderson > $325?? Well, they did list it with a 'Best Offer'. I figure the third time they get an offer of US$100 (or whatever the thing is actually worth, I don't track PDP-8 board values), it might become clear to them that they are way optimistic on the value. I once had

eBay: PDP-8/A KL8A serial line card

2019-08-07 Thread Noel Chiappa via cctalk
This item: https://www.ebay.com/itm/133136230586 is poorly titled, so people's searches might not find it; the M8319 is a KL8A 4 channel EIA RS232 or 20mA current loop serial hex I/O card for the PDP-8/A. Noel

Re: MicroPDP-11/23+ cabinet kit cables

2019-07-26 Thread Noel Chiappa via cctalk
> From: Douglas Taylor > I'm putting together a MicroPDP-11/23 in a BA23 box. Have the M8189 CPU > quad width board and the bulkhead cabinet kit .. how the cabling goes > from the M8189 CPU board to the bulkhead cabinet kit? I _think_ this might be the cable you need:

Mystery DEC backplane on eBay

2019-07-16 Thread Noel Chiappa via cctalk
For those who saw this item: https://www.ebay.com/itm/183639487495 but didn't know what it went to (Web searches for "5409818" and "5009817" didn't turn up anything useful for me), it turns out to be a "Configuration 2" backplane for a PDP-11/05-/10:

Re: RF08 light panel

2019-07-16 Thread Noel Chiappa via cctalk
> From: Ethan Dicks > Did anyone here get it? Yeah, me - although I didn't expect to! Because of my work on DEC indicator panels (this one's a 10-1/2" panel, unusual): http://ana-3.lcs.mit.edu/~jnc/tech/DECIndicatorPanels.html I put in what seemed to me a lowish bid, expecting not

Re: Margaret Hamilton Guardian interview.

2019-07-14 Thread Noel Chiappa via cctalk
> From: Richard Loken > I have never heard of her before and had no idea. There are two books from participants in the development of the AGC software (both of which I highly recommend) which mention her: Hugh Blair-Smith, "Left Brains for the Right Stuff: Computers, Space, and

Re: KL10-A/KL10-B differences

2019-07-11 Thread Noel Chiappa via cctalk
> From: Eric Smith > two separate backplanes that are combined for the RH20s (if > present), one backplane for the A through D positions (upper 2/3 of > each module slot), and one for E and F. How odd. DEC was quite happy to do hex backplanes elsewhere, and it looks from the

Re: KL10-A/KL10-B differences

2019-07-09 Thread Noel Chiappa via cctalk
> Erom: Eric Smith Hey, thanks for taking the time to provide all those details. As you no doubt saw, our emails crossed; I had managed to work out my own what the difference was. I'd been looking at this page: http://corestore.org/DEC2065.htm and saw the two backplanes, and assumed one

Re: KL10-A/KL10-B differences

2019-07-08 Thread Noel Chiappa via cctalk
> So my new theory is that it's the MBox (either the backplane, the > boards, or the wiring from it to connectors, etc) that is the difference > between the KL10-A and the KL10-B. So I wuz confused; the second backplane is not the MBox (which is apparently on the main CPU backplane),

KL10-A/KL10-B differences

2019-07-08 Thread Noel Chiappa via cctalk
So I'm a little puzzled by something, and I was wondering if anyone here knows the answer. So early KL10's (KL10-A's, to be precise) only support a single DTE20, and no RH20's. Later ones supported up to 4 of the former, and up to 8 of the latter. I always supposed this to be part and parcel of

Re: Lots of Apple 1 computers @ VCF West

2019-07-07 Thread Noel Chiappa via cctalk
> From: Evan Koblentz > what the owners plan to do in the future. Sell the Apple I and retire to a tropical island on the proceeds, if they have any sense! :-) Noel

KDJ11-E issue/info

2019-07-07 Thread Noel Chiappa via cctalk
> From: Nigel Johnson > Anybody have any docs on the DEC LSI 11/93 (KDJ11-E)? Info on the -E is thin on the ground. The User's Manual (EK-KDJ1E-UG-001) is available online, though, which is a start - it gives info on how to configure it, etc. > I am trying to run it in a BA23

Re: Email delivery protocols / methods.

2019-07-06 Thread Noel Chiappa via cctalk
> From: Grant Taylor > How many different protocols / methods can we collectively come up with > for how email can be transferred?' Hey, this is the classic computers list, so you should only list early stuff, (say pre-1990), and leave out all the modern crap (but I repeat myself).

Re: gunkies.org is down or?...

2019-07-05 Thread Noel Chiappa via cctalk
> From: Tomasz Rola > Is it really down? I suppose this is actually good news, in a way - someone must have been trying to use it, to notice that it was down! :-) So let me take this opportunity to appeal once again for people to contribute content; I've added a lot of PDP-11 stuff, and

Re: gunkies.org is down or?...

2019-07-04 Thread Noel Chiappa via cctalk
> Tomasz Rola > However, I have added this line to my /etc/hosts: L-rd, I must be getting old - it never dawned on me to do that. Anyway, that shows the server was fine, it was just the missing DNS entry. Back now. Noel

Re: gunkies.org is down or?...

2019-07-03 Thread Noel Chiappa via cctalk
> From: Diane Bruce > Works fine. Probably a left-over cached entry; neither my ISP's DNS, nor MIT's ("Host gunkies.org not found: 3(NXDOMAIN)") can resolve it at the moment. One year Tore was off hiking or something, and it took a few days, but past experience is that he will get to

Re: gunkies.org is down or?...

2019-07-03 Thread Noel Chiappa via cctalk
> From: Tomasz Rola > Is it really down? Could it come back? Tore forgot to pay the bill for his DNS entry; this is the third year in a row the exact same thing has happened, on the exact same date! :-) :-( I've already sent him an email about it, this morning; hopefully he'll get with

Re: Recovering the ROM of an IBM 5100 using OCR (among other things)

2019-06-27 Thread Noel Chiappa via cctalk
> From: Liam Proven > This is *epic*. Indeed. I was blown away by the complexity of his technique for reading the digits. I can't believe there wasn't a much easier technique, though, e.g. using a logic analyzer and a small program to read through the ROS! Perhaps the challenge of

Re: Anyone have any info on the obscure MX11 PDP-11 option?

2019-06-24 Thread Noel Chiappa via cctalk
> From: Al Kossow > Does anyone know where Steve Rothman is? And also Bill Weiske, who's listed as the go-to for the KS11. Noel

Re: Anyone have any info on the obscure MX11 PDP-11 option?

2019-06-24 Thread Noel Chiappa via cctalk
> From: Al Kossow > It is in the Dick Best Options and Modules List 197503 Ah, thanks for the pointer; I see it's listed as a "Memory Extension Control" - not sure that tells me much, alas! Interestingly, it's not in the earlier Options and Modules lists, e.g. June '74, but the KS11 is

Anyone have any info on the obscure MX11 PDP-11 option?

2019-06-24 Thread Noel Chiappa via cctalk
While I asking on the TUHS list about the KS11, someone mentioned the MX11 Memory Extension Option, described as "enabl[ing] the usage of 128 KW memory (18-bit addressing range) ... developed by the Digital CSS (Computer Special Systems)". I'm not familiar with this, and I couldn't find anything

Re: unix developed on 11/20 with 20 on panel or machine that just said pdp/11?

2019-06-22 Thread Noel Chiappa via cctalk
> From: Steve Malikoff >> According to this page that Dennis Ritchie wrote ... >> https://www.bell-labs.com/usr/dmr/www/picture.html > It states that their 11/20 had a KS-11 memory management unit, was > that mandatory for running v1 Unix on an 11/20? Well, the page does say

Re: Missing posts in archive and no Subject: line

2019-06-19 Thread Noel Chiappa via cctalk
> From: Joe Zatarski joezatarski at gmail.com > The posts you mentioned were sent to cctech. .. that list is > moderated .. You'll notice these posts are now in both archives. Ah, that could be it. I thought I'd found them in the Subject: thread archive at the same time they

Re: PDP 11/15

2019-06-19 Thread Noel Chiappa via cctalk
> From: Bob Smith > there have been refs to another more modern unit, based on LSI[-]11 > or later chip set I've never heard of that, and I wonder if DEC would really have released a new product with the same name as an old one (the two PDP-11/10's are different, as I'm not sure many

Re: Wanting to get my first classic computer

2019-06-19 Thread Noel Chiappa via cctalk
> From: Ray Jewhurst > I would really like to get my own classic computer but I don't know > where to begin. Two questions you need to sort out in your mind, to decide, are i) do you want something with a bit-mapped video screen, or are you happy with ASCII serial line only, and ii)

Re: DEC KA650 VAX memory troubleshooting (video)

2019-06-18 Thread Noel Chiappa via cctalk
> From: Joe Zatarski > OK, so where should a thing like this go: ... Anybody got a decent > place to upload that? As always, the CHWiki is available for any vintage computer stuff. I can set up an account for anyone here who wants one. I have posted similar information for PDP-11

Re: Apollo Computer Article

2019-06-18 Thread Noel Chiappa via cctalk
> From: Jim Brain > Probably too light for folks in here, but maybe some will find some > interest Good high-level view of the importance of the AGC work. For those who want technical details, there's a Web-site (I can dig up the URL if anyone wants) about the recovery of the

Missing posts in archive and no Subject: line

2019-06-17 Thread Noel Chiappa via cctalk
So, a couple of posts yesterday did not show up in the date archive: http://www.classiccmp.org/pipermail/cctalk/2019-June/date.html which is how I read the list. They are: Software for Fairy YL-23 IC tester wanted http://www.classiccmp.org/pipermail/cctalk/2019-June/048094.html

Re: 360/20 retrieval in Nuremberg (Was: No subject)

2019-06-16 Thread Noel Chiappa via cctalk
> From: Lawrence Wilkinson > Nothing to report other than what's at https://ibms360.co.uk Any partial results in trying to figure out a way to get all the stuff back from Nuremberg? You all may wind up having to rent a large truck yourselves, alas... Noel

Re: One of the deeper dives into RISC vs CISC I've seen

2019-06-16 Thread Noel Chiappa via cctalk
I finally got around to reading that note. My principal reponse is that it got so far down into details that I couldn't see the larger picture any more. Going back to the original IBM 801 work, the RISC concept is very simple: to make the overall system as fast as possible; it did this by

Re: Value of Burroughs B9974 disk pack

2019-06-14 Thread Noel Chiappa via cctalk
> From: Alan Perry > a chance to see and touch something that I haven't seen in decades > that was once a big part of my life. I know exactly what you mean. PDP-11's were a huge part of my professional life: -11/20: the first computer I actually used, in high school -11/45:

Re: Modems and external dialers.

2019-06-14 Thread Noel Chiappa via cctalk
> From: Liam Proven > There was a certain simplicity and understandability about Win9x, > yes, but NT was far more reliable, even back in the NT 3 era. .. > So I moved to NT as soon as my kit could run it, and never looked > back. I was speaking from a user's perspective; I

Re: M7264 Troubleshooting

2019-06-13 Thread Noel Chiappa via cctalk
> From: Allison >> "The console emulator Octal Debugging Technique (ODT)is a portion of >> the processor microcode ... The console ODT implemented on the LSI-11/23, >> PDP-11/23 and PDP-11/23-PLUS is identical." > However LSI-11/23 whatever that is, typo? No, that's

Re: Modems and external dialers.

2019-06-12 Thread Noel Chiappa via cctalk
> From: Liam Proven > Now, my tablet and iPhone and Android phones need *at least* 3 or 4 > apps updating every day. ... The OS needs to be replaced every month > or two to fix all the flaws in it, and that's a gigabyte or so of > storage. > I am *furious* about this.

Re: What Makes a PDP-11/35 or 40 Tick?

2019-06-12 Thread Noel Chiappa via cctalk
> From: Liam Proven > This is what makes a PDP-11/35 or PDP-11/40 tick. It turns out to be > 441 ICs. I wondered if it was fair to list the DEC 23B00A2, etc that hold the ucode as separate parts; they might have been a bunch of 256x4 PROMs, and the separate part numbers were just for

Re: Old soaftware and documentation

2019-06-10 Thread Noel Chiappa via cctalk
> From: Cindy Croxton > I have a large qty to donate Roughly what does it go to - old PC's; Windows boxes; etc? Noel

Re: M7264 Troubleshooting

2019-06-08 Thread Noel Chiappa via cctalk
> From: Allison > ODT for the two systems are very different. .. KDF-11 the ODT is part > of the higher level code. The larger cards (11/23 and 23+) boot to > resident (ep)rom. Ah, no. (Well, the KDF11 CPU's can boot to EPROM, which in the -11/23+ can be on the CPU card; the

Re: M7264 Troubleshooting

2019-06-08 Thread Noel Chiappa via cctalk
A follow-up to close out something: > OK, now a picture of the bus with no console card: > http://ana-3.lcs.mit.edu/~jnc/tech/pdp11/jpg/BSYN-BDAL_NoMem.jpg [Note: image re-named, to correctly say what it's showing] > It's a bit hard to interpret what's going on here .. The long

Re: M7264 Troubleshooting

2019-06-07 Thread Noel Chiappa via cctalk
> From: Mister PDP > Wow, I wasn't aware that the ODT console needed memory to run. It was news to me too! (And apparently to most others here too?) I was going to look at those confusing bus cycles, using an only slightly mis-addressed console, and wanted to first check that that

Re: PDP-11/10 PSU Repair/Warning

2019-06-07 Thread Noel Chiappa via cctalk
> From: Systems_Glitch > I believe the big difference was in the current-supplying capability on > the +15V rail -- 1A vs. 4A. Ah, thanks for the tip. I have an H742, so I was exable to examine it, and the 5409730 (difference details on that below). The transformer may also be

Re: PDP-11/10 PSU Repair/Warning

2019-06-06 Thread Noel Chiappa via cctalk
> From: Paul Anderson >> (I also should check to see if the H742 uses the same 15V board; it >> uses the same 'bricks', so it may.) > Didn't the H7420 , which replaced the H742, use that also? The H742 uses > a different one . Oooh, good catch! The H742 uses a 5409730, but

Re: PDP-11/10 PSU Repair/Warning

2019-06-06 Thread Noel Chiappa via cctalk
> From: Systems Glitch > I finally fixed the power supply in my PDP-11/10S ... For those who > have original 5411086s that haven't failed yet, you might want to > make up a little pigtail with an inline fuse holder. Congratulations, and a great blog write-up. The issue you point

Re: 11/93 rebuild

2019-05-29 Thread Noel Chiappa via cctalk
> From: Holm Tiffe >> The "--list" command to 'dd' gives a whole bunch of stuff: > aha: > $ dd --list > dd: unknown operand --list I was talking about the program I had mentioned in the previous email, "dd for Windows". The "--list" command to it produced that long list of

Re: M7264 Troubleshooting

2019-05-29 Thread Noel Chiappa via cctalk
> From: Josh Dersch > how is the backplane in the H11 currently configured? (i.e. what boards > are in what slots?) Could the issue here be something as simple as a > break in the qbus due to a misplaced board? He did mention that he had the console card in the slot next to the

Re: 11/93 rebuild

2019-05-28 Thread Noel Chiappa via cctalk
> From: Holm Tiffe > You have to have an already existing parition structure on the disk and > an OS that knows what todo with that. The "--list" command to 'dd' gives a whole bunch of stuff: Win32 Available Volume Information \\.\Volume{cd4ae459-0daa-11e2-9625-806d6172696f}\

Re: M7264 Troubleshooting

2019-05-28 Thread Noel Chiappa via cctalk
Hi, sorry about the delayed reply; been dealing with this: http://ana-3.lcs.mit.edu/~jnc/jpg/backoak/WholeTreeS.jpg The cranes arrive tomorrow... > I took a look at all the lines you mentioned. BDAL3-13, BDIN, BSYNC, and > BBS7 are all active and jump around in some manner. Hmm.

Re: 11/93 rebuild

2019-05-27 Thread Noel Chiappa via cctalk
> From: Rod Smallwood > 4. I need a tried and tested list of step by step instructions to > put RD54.dsk on the SCSI drive. Well, this isn't a list of directions, but... I've had good luck doing almost this exact same thing (on a Windows XP box, copy a filesystem in Windoze file onto

Re: M7264 Troubleshooting

2019-05-23 Thread Noel Chiappa via cctalk
> From: Jon Elson > Yes, this is most likely a bus timeout The good news is that it looks like his CPU is 'mostly' working; and if the NXM is due to a fault on the CPU (e.g. bad bus transceiver sending the wrong address), that would be fixable (it uses 8641's). If the fault is in the

Re: M7264 Troubleshooting

2019-05-22 Thread Noel Chiappa via cctalk
> On the LSI-11/2, with the machine stopped, 'run' was off, and the > output on AF1/AH1 was always high (i.e. not asserted). > I don't have any guesses as to what the behaviour of yours is about. Hah! Eureka! I had a brainwave, and decided to look at my machine with the serial console

Re: M7264 Troubleshooting

2019-05-22 Thread Noel Chiappa via cctalk
> From: Glen Slick > According to the M7270 LSI-11/2 Microcomputer Module User's Guid[e], > it uses BC1, BD1, BE1, BF1 for SCLK3 H, SWMIB18 H, SWMIB19 H, SWMIB20 H. Oh, thanks! I wonder how I missed that, looking at the prints? (The drawings have these nice dark arrowheads to

Re: M7264 Troubleshooting

2019-05-21 Thread Noel Chiappa via cctalk
> From: Mister PDP Well, I verified that the LSI-11/2 should work in a Q22 backplane - in the sense that the only pins it tries to talk to are standard QBUS pins, and AF1/AH1 for SRUN. It doesn't drive BREF, which might cause issues in later QBUS systems. Although it's a different board from

Re: M7264 Troubleshooting

2019-05-20 Thread Noel Chiappa via cctalk
> From: Mister PDP > After a day of confusing and mixed up signals (I don't really use > this type of equipment very often) .. I switched over to the > oscilloscope Don't feel bad, I too prefer to rely on an oscilloscope by default; not only does it let you see what's really

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