test-drb

test-drb@ccmp.vtda.org

101090 discussions

by w2hx＠w2hx.com

Hi there. I just acquired a board with the number M7609. It was advertised as an M630-CA which my research tells me is supposed to be 16MB. How do I tell on the board if this is 8MB or 16MB? There does not seem to be a suffix on the board that I can see. What to look for? 73 Eugene W2HX

7 years, 3 months

cctalk Digest, Vol 58, Issue 9

by athornton＠gmail.com

> On Jul 9, 2019, at 10:00 AM,Tomasz Rola wrote: > > BTW, you would like a ride to the past? I would like a ride to the > future. Although from what I have seen so far, maybe not... Spider Robinson did a story about this, entitled ?The Time-Traveler.? The method, while as easily-implemented now as it was then, is not pleasant. Adam

7 years, 3 months

Email delivery protocols / methods.

by cctalk＠gtaylor.tnetconsulting.net

Here's pot stirrer for a holiday Friday afternoon: How many different protocols / methods can we collectively come up with for how email can be transferred? I'm primarily thinking about between servers (MTA-to-MTA). But I'm also willing to accept servers and clients (MTA-to-MUA). Where you can / could run at least one server yourself. ? SMTP(S) ? UUCP (rmail) ? MMDF ? X.400 ? Microsoft Exchange proprietary protocol ? Novell GroupWise proprietary protocol ? Lotus (IBM) Domino proprietary protocol ? FidoNet (FTN) ? BITNET ? Direct file access - group Post Office ? Direct file access - mail spool -- Grant. . . . unix || die

7 years, 3 months

KL10-A/KL10-B differences

by jnc＠mercury.lcs.mit.edu

> 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 was the EBox, and one the MBox - wrong! But eventually I got it straight... One some other points you covered: > The 1080 was intended to replace a KA10 or KI10 ... It only needed a > single DTE20 for the internal console PDP-11, and it didn't need an > RH20 because the disk would be attached via an RH10 Got it; makes sense. Could an -A be upgraded to a -B by swapping the I/O backplane? (Yes, the wiring to the I/O connectors would have to be changed too, and that might have been too difficult.) But could the APR handle it (perhaps with one or more board changes)? > The -PA and -PV designations .. are for the "arithmetic processor" > (APR), which is the main CPU portion of the KL10. Useful terminology to know. Do you happen to know what 'PV' stands for - or is it just a random letter code? >> my new theory is that it's the MBox ... that is the >> difference between the KL10-A and the KL10-B. > It's not just the MBOX; there are significant EBOX differences as > well. Various modules from the entire CPU are different, and the > backplane wiring is slightly different. It was possible to upgrade a > -PA to -PV by swapping modules and adding some wraps to the > backplane Do note I said "KL10-A and the KL10-B", not 'Model A and Model B'... I assume the APR's in the -A and -B were identical, it was just the I/O backplane, etc which were different. On the -PA to -PV upgrade, could the backplane really be done with some wraps? I ask because I saw in one manual, talking about a KL10-C to -PV upgrade, it calls for a backplane swap-out. I've also got some open questions on the later things like the KL10-R, -PW, and MCA25, which are not covered well in the documentation avilable in bitsavers; do you know about the later variations? Noel

7 years, 3 months

Lots of Apple 1 computers @ VCF West

by cctalk＠snarc.net

Today I can announce that 10 original Apple 1 computers will be displayed at VCF West, and we're working on getting more. Several of these will be up-and-running. Original and current owners will join early Apple employees in a panel to discuss the computers, why they were purchased, how they were used, and what the owners plan to do in the future. So, buy your tickets online now. :) http://vcfed.org/wp/festivals/vintage-computer-festival-west/ -Evan

7 years, 3 months

QEMU sparc with networking that works

by dave＠661.org

Does anyone here have any sort of guide on how to get QEMU working emulating a sparc or sparc64 machine WITH networking that actually works? I've been banging my head against zillions of guides that are dreadfully outdated or just don't work. -- David Griffith dave at 661.org A: Because it fouls the order in which people normally read text. Q: Why is top-posting such a bad thing? A: Top-posting. Q: What is the most annoying thing in e-mail?

7 years, 3 months

sun microsystem manuals

by fedorkow＠mit.edu

I have a small stack of Sun 3 Administrator, Networking and Diagnostic manuals, from about 1990.? Contact me if you think anyone would want them? ? Thanks /guy fedorkow

7 years, 3 months

ALGOL-60 obit

by mark.kahrs＠gmail.com

For those who like that sort of thing, here's more on the author of the PDP-8 ALGOL: https://ouscr.org.uk/index.php/obituaries?id=54

7 years, 3 months

KL10-A/KL10-B differences

by jnc＠mercury.lcs.mit.edu

> 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), but an 'I/O backplane'. The one in the KL10-B is different+larger and holds the RH20s, etc. Noel

7 years, 3 months

KL10-A/KL10-B differences

by jnc＠mercury.lcs.mit.edu

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 the 'Model A/Model B' CPU difference, but no... EK-0KL10-02 Part 1 (no title, seems to be notes for F/S) pg. 9, says both KL10-A and KL10-B's are PA (DEC jargon for the Model A CPU - below), but the former has no RH20's, the latter does. (A note at the bottom of the page says that a PA is a 'Model A', and describes it as having "internal channels". The PV is a 'Model B' - extended addressing, larger ucode, faster clock.) 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. Can anyone confirm this and/or provide details of the differences? Pictures of the MBox in a KL10-A would be good, too. Noel

7 years, 3 months

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