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by Paul Koning

I was poking around eBay and up came a listing for a DEC "mini exchange", DFMSA. What is that? The name doesn't sound familiar. It looks like a box with a bunch of DB25 connectors on the back, but that doesn't help much. paul

1 month, 2 weeks

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Rescued a HP 2116B from being scrapped.

by Mattis Lind

A little while ago I was contacted by a person working for a big swedish company that asked if I was interested in saving a HP 2116B from being scrapped. On Monday I was able to pick up not just the HP 2116 but also some other HP21xx series machines that all were destined to be scrapped next week. When looking deeper into the HP 2116 I discovered that it was missing two non-optional boards. Without these boards the machine will not even power up. The boards missing are the power failure board ( 02116-6175 or 12588-6001) and the memory module decoder board ( 02116-6300 or 02116-6274 ). It is probably possible to create some kind of replacement boards but it would be really nice to have the original boards in such a nice machine. Is there anyone that has these boards that want to sell or trade them for something? /Mattis

1 month, 2 weeks

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HP 1611A logic state analyzer from the 80's in the 603 area code

by Bill Degnan

Anyone in the 603 area code interested in this (below)? I received an inquiry through kennettclassic.com but we don't need it. If interested contact me through kennettclassic.com/conatct.cfm or by private email. I don't know the person, but it looks like they want to sell, not donate. Bill "... *Hello, I have an old HP 1611A logic state analyzer from the 80's that was previously owned by Parker Brothers, no doubt used to test out chips for their electronic games and toys. I was wondering if you might know where I might be able to sell it or if you have any interest in it yourselves. It has all the documentation, including a leather bag intended to hold all the manuals. It powers on and still works. While I don't have any chips to test it with, I have seen it function and work with chips when I purchased it. *..."

1 month, 2 weeks

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Emulex SC03 disk capacity patch manual scanned

by Christopher Zach

Hi all! I noticed that while the Emulex SC03-B1 manual is on Bitsavers, the instructions for how to patch and use this board on a 22 bit Q Bus system are not. In the manual it says to "Write emulex". Fortunately I did 40 years ago and I have the "Emulex Disk Capacity Patches to DEC PDP-11 Operating Systems" manual which is now scanned and online at https://www.crystel.com/dec/sc03 Emulex document ID is PD9951002 Rev A, March 1983. Covers Rsx11M 3.2, 4.0, RSTS/E, and M+ versions at that time. Every page is scanned as a 300 DPI TIFF image, and there is a PDF version of the whole manual as well. Apparently they use the RH70 Unibus driver (which supports 22 bit without the unibus map) and then change a few bits to make it work on Q Bus. Enjoy and bitsavers owner please stick this in your archives as well. Chris

1 month, 2 weeks

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Re: vintage computing web sites

by donald donaldwhittemore.com

In the early 70s I worked at a place that had 2 S360/40s. On the 23rd floor of a 45+ year old building. At least 8 tape drives, 2 control units for them, 2 full banks of 2314, 2 1403 printers and 2 2540 card machines. I would assume updated wiring would have to have been run up 23 floors. When I started there was 1 S360/30. Don’t know if the normal building wiring would need to be updated for that.

1 month, 2 weeks

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Re: vintage computing web sites

by donald donaldwhittemore.com

I, for one, have fond memories of the S/360-20, 30 and 40. I ‘grew’ up running and programming those systems. FWIW, I have a punch card archive at www.ibmjunkman.com

1 month, 2 weeks

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HP9100B CRT

by hupfadekroua

Hi all, Are there any suggestions for the replacement of a HP9100B CRT? Best Andreas

1 month, 2 weeks

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Computer Data Systems "Versatile 2"

by Bill Degnan

Does anyone have, or has even seen, a Computer Data Systems "Versatile 2" s-100 computer from 1977? The company that produced it was from Newark, Delaware USA and I have been trying to track one down because I live nearby. Thanks Bill

1 month, 2 weeks

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Seattle Area: The "Interim Computer Festival" is tomorrow ...

by Michael Brutman

We're still waiting for VCF PNW 2020, but while we wait ... https://sdf.org/icf/ (This is a much smaller event than any VCF. It's also quite fun because it's not overwhelming.) -Mike

1 month, 2 weeks

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FSF

by Murray McCullough

The Free Software Foundation(FSF) is 40 this week. Central to the thesis of sharing software this organization has played and continues to play a seminal role. Though it's importance may be waning due to AI its reason to exist can't be overstated. Happy computing Murray 🙂

1 month, 3 weeks

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