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PDP-11/20 vd one that just says pdp 11 what are the date differences?? OEM?

by jnc＠mercury.lcs.mit.edu

> From: Bill Degnan >> Yes, detailed histories might (and many do) indicate that the name >> "PDP-11/10" was originally allocated to what later became the 11/15 > what detailed histories are these that you refer to that say there was > never a single KA11 11/10 sold, not one installed? I didn't say that they said "there was never a single KA11 11/10 sold, not one installed". So I just spent an hour looking through all the standard DEC histories (e.g. Bell, Mudge, McNamara, "Computer Engineering: A DEC View of Hardware Systems Design", etc, etc, etc, etc, etc) and I was unable to find _anything_ about either the 'first' -11/10; or even the -11/15, for that matter! So I don't know where I saw the mention of the 'first' -11/10 being what later became the 11/15. I _did_ find a mention of the 'first' -11/10 in the 1970 "PDP-11 Handbook" (pg. 1), with the specs as in the 1969 price list. Unlike the -11/15, which did have differences in the CPU itself, it seems that the 'first' -11/10 differed from the -11/20 only in the memory that came with it - i.e. the CPU was the identical KA11 as in the -11/20. So, do you know of any engineering document or photograph of one of those 'first' -11/10's? My bet is that there probably are none - because the machine likely never existed. (Although DEC may have sold a few, what was shipped was probably an -11/20 - with a front panel reading 'PDP-11', which may be why the earliest -11/20's said that - with the configuration listed for the 'first' -11/10.) To repeat: To the extent that one allocates the name "-11/10" to anything, it should, by virtue of the existence of _many actual physical instances_, _marked as such_, be to the KD11-B machine. Noel PS: Amusing factoid: I have a PDP-11/20 price list from April 1, 1972 which lists a "PDP-11/21"! (Versions are -CA, -CB, -CE, -CF.) It's repeated multiple places throughout the list, which leads me to believe it's not a typo.) No idea what that was all about.

10 years, 2 months

The AT&T 3B2 is still proprietary

by COURYHOUSE＠aol.com

how does the mac 8 bell computer I have tie in with ess? thx Ed# _www.smecc.org_ (http://www.smecc.org) In a message dated 2/22/2016 1:04:54 P.M. US Mountain Standard Time, lists at loomcom.com writes: Here's an interesting tid-bit. I just got off the phone with the AT&T corporate archives, where I had hoped to find schematics and internals documentation for the AT&T 3B2. They do have it, but unfortunately they will not give access to any of it because they still consider the 3B2 to be proprietary information. I'm disappointed, obviously, but not all that surprised. 25 years is not a long time for a company like AT&T, and I understand the 5ESS system still runs a 3B20 emualtor. They may even still have support contracts for 3B2 installations, I'm not sure. Anyway, all that aside, will soon have access to a couple of 3B2/310s, so I hope to continue reverse engineering the hardware directly. -Seth -- Seth Morabito web at loomcom.com

10 years, 2 months

PDP-11/20 vd one that just says pdp 11 what are the date differences?? OEM?

by COURYHOUSE＠aol.com

Then there is this information..... PDP-11/15 (http://gunkies.org/wiki/PDP-11/15#column-one) (http://gunkies.org/wiki/PDP-11/15#searchInput) This is the OEM version of the _PDP-11/20_ (http://gunkies.org/wiki/PDP-11/20) .

10 years, 2 months

PDP-11/20 vd one that just says pdp 11 what are the date differences?? OEM?

by COURYHOUSE＠aol.com

In a message dated 2/22/2016 11:50:15 A.M. US Mountain Standard Time, cisin at xenosoft.com writes: On Mon, 22 Feb 2016, Paul Birkel wrote: > I wonder how long it took them to "figure it out"? I seems that the > family-plan dates to April 1969. When everybody realized and accepted that there would be more than one sub-model, and decided that it might be handy to be able to tell them apart. There may have been some holdouts in some departments, such as silk-screening the panels. By analogy, the phrase "single density" didn't originally exist. After "DOUBLE-density" was developed, THEN "single density" needed a name. Although just sticking with "FM" and "MFM" would have been a lot better! (Although I guess that it was inevitable that marketing would invent "HD", instead of "double data transfer rate MFM".) There were even a few companies that freely intermingled HEADS V density! Intertec/Superbrain decided to call their 5.25" 40 track DSDD, "QUAD density", because it was twice the capacity of the 40 track SSDD! Then, when they added an 80 track DSDD, they caalled that "SUPER density", abbreviated "SD"! So, if you encounter an alien disk labelled "SD", it might be 720K/800K, not 100K. Similarly, if you were to search ancient archives, the phrase "World War TWO" was first used BEFORE there was any mention of "World War ONE". It wan't until a second happened, or was expected, before anybody had any reason to declare the "Great war"/"World War" to be "nuber ONE". So, the use of any sort of "first" name doesn't occur until "second" is expected. Or WW1 was also referred to as the "war to end all wars" some good name sequence comparisons here Ed#

10 years, 2 months

PDP-11/20 vd one that just says pdp 11 what are the date differences?? OEM?

by COURYHOUSE＠aol.com

PDP-11/20 vd one that just says pdp 11 what are the date differences?? OEM? was one version for customer and one for OEM? THANKS IN ADVANCE Ed#

10 years, 2 months

PDP-11/20 vd one that just says pdp 11 what are the date differences?? OEM?

by COURYHOUSE＠aol.com

In a message dated 2/22/2016 6:33:13 A.M. US Mountain Standard Time, billdegnan at gmail.com writes: > > > > The PDP-11/10 was the second processor made in the _PDP-11_ > (http://gunkies.org/wiki/PDP-11) series. > The PDP-11/05 CPU was identical to the PDP-11/10 (KA11-B). The only > difference between the PDP-11/05 and the PDP-11/10 was that the PDP-11/05 > was > made for OEM, while the PDP-11/10 was for end-users. > sort of like the 8 m and 8 f were same but one oem one end user > Ed# at _www.smecc.org_ (http://www.smecc.org) > > > > The second 11/10 obviously. Not the 1st. The first 11/10 was a KA11 I hope I am making my point - I am suggesting that everyone stop quoting and repeating the DEC wiki's on the web. They all need to be updated to reflect this subtle difference. -- @ BillDeg: Web: vintagecomputer.net Twitter: @billdeg <https://twitter.com/billdeg> Youtube: @billdeg <https://www.youtube.com/user/billdeg> Unauthorized Bio <http://www.vintagecomputer.net/readme.cfm> Bill.... read carefully - - I was talking about the second one that paired with the 11/05 and using it as a comparison in nomenclature like they did with the pdp-8 m or f to show you could have same things but different name depending if for customer or oem. or that is what I was trying to do anyway. ---Ed# _www.smecc.org_ (http://www.smecc.org)

10 years, 2 months

Looking for a small fast VAX development machine

by seefriek＠gmail.com

From: "Maciej W. Rozycki" <macro at linux-mips.org> > I've only ever heard of and saw a single kind of monochrome graphics > hardware for x86 PCs and that was the Hercules Graphics Card (HGC) and its > clones, and these were already gone by early to mid 1990s. The Wyse 700 and Bell Tech Blit were both ISA bus mono video cards. There were others (maybe Radius...Metheus as well?). P.S. - Sorry if I included the whole digest in my previous reply. Long day. KJ

10 years, 2 months

PDP-11/20 vd one that just says pdp 11 what are the date differences?? OEM?

by jnc＠mercury.lcs.mit.edu

> From: Bill Degnan > I hope I am making my point - I am suggesting that everyone stop > quoting and repeating the DEC wiki's on the web. They all need to be > updated to reflect this subtle difference. The thing is that there never was a physical PDP-11/10 of the first type, it was just marketing plans; whereas there were/are still many physical -11/10's of the second type. Yes, detailed histories might (and many do) indicate that the name "PDP-11/10" was originally allocated to what later became the 11/15, but to the extent that one allocates the name "-11/10" to anything, it should, by virtue of the point above, be to the KD11-B machine. Noel

10 years, 2 months

Minix 3 vs portability - was Re: Looking for a small fast VAX development machine

by seefriek＠gmail.com

On 2016-02-22 11:58 AM, Mouse wrote: > Unix was done on the PDP-11 (something else > before that, I think, but I forget what, and I think it was with the > move to the -11 that it became portable enough to be ported instead of > rewritten). PDP-7, though it was more of a "reimplementation" than a port. The PDP-11 code became (by v6 or so) portable enough that it was subsequently made to run on the (sorta IBM 360-ish) Interdata 7/32 & 8/32, as well as VM/370, in the late 70s. KJ

10 years, 2 months

HYPERchannel users?

by auringer＠tds.net

Hi All, Does anyone still play around with HYPERchannel equipment? I have a MultiBus I to HYPERchannel adapter that could use a new home. It is in a Network Systems Corporation box with cables and manual. The model is PIx50. It is in Madison WI (53714). For more information about HYPERchannel: https://en.wikipedia.org/wiki/HYPERchannel https://en.wikipedia.org/wiki/Network_Systems_Corporation -Jon

10 years, 2 months

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