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Folks interested in a 110 cps (fast!) 8-level 1" paper tape punch may want to consider bidding on the BRPE11 listed on eBay: https://www.ebay.com/itm/296166916217 FYI these don't show up very often (a bit R@RE :->); it's not mine. This one needs some cleaning on the backside and generally, but...

This one is fun: https://www.ebay.com/itm/375161153954 Notice the bid history (started at $1), second photo, "free expedited shipping", and the lack of any description ... Still, if you're anywhere near(ish) Rancho Cucamonga, CA, you might try contacting them directly.

I'm in the process of reverse-engineering an industrial controller from the '80s that incorporates an LED-based blinkenlights operator interface, including switches for the usual interactions with the processor. It's a bit unusual in that while the system is based on a 16-bit VLSI CPU with a...

I find myself faced with the task of reverse engineering an undocumented 15x15" two-layer fully populated PCB. The bus into which it plugs is also undocumented. It's principally populated by MSI TTL, with some resistor packs, and lots of thin traces and vias. All of the ICs/packs are...

I wasn't sure where to place this topic, but as the broader context is a CNC mill controller using a Data General Nova-family controller <Minis and Mainframes> seemed as appropriate as any other forum. I'm working to reverse-engineer a BostoMatic CNC controller from the early-mid 80's that uses...

What does the expression "DEC/X11" designate? I've come across this referent on multiple occasions now and they don't seem to add up to any coherent context other than that the expression doesn't seem to relate to any specific system, system configuration, or hardware option ... although in...

See: https://www.ebay.com/itm/204381246173 "NO CARDS INSIDE UNIT". Can anyone enlighten me as the the various subsections/connectors on the back panel? THX!

FYI: https://www.ebay.com/itm/305000653188 Less common on eBay in recent years than the 12-sector RK05 DECpack for the PDP-11.

Ref: https://www.ebay.com/itm/225598765550 Note that this is a full-fledged M8190-AE, the top-of-the-line processor implementation used in the PDP-11/83 and PDP-11/84 -- 18Mhz with the hard-to-find FPJ11-AA. Alas the J11 has been harvested, but those are in much greater supply than the...

I have an PDP-11/35/40/45/50/55/70 family front panel that is bezel-less, a shortfall that I'd like to remediate :-}. To get a bit of a feel for the cost these days to 3d print one I tried costing "6u-mm.stl" and "6u-mmkit.stl" (sliced into halves that need to be fastened together), which are...

The DF02 (300 Baud) and DF03 (300/1200 Baud) modems appear to be singularly lacking in online documentation. In the case of the DF03 those would be: EK-ODF03-IP - DF03 Illustrated Parts Breakdown EK-ODF03-PS - DF03 Modem Pocket Service Guide EK-ODF03-UG - DF03 Modem Users Guide Similarly for...

Just received this message, FYI: Hello, This letter is to inform you that Douglas Electronics, Inc. has a new domain name: DouglasPCB.com As of January 2023, our new contact e-mails are: Custom PCB Sales: steve.vierra@DouglasPCB.com PC/104 and Breadboard Sales, Customer Service, Accounting...

https://www.ebay.com/itm/204136831468 I do not find this auction to be credible. Do you?

This is a twin/duplex cable of varying length with 100/140 um "multimode" cores and SMA-906 connectors. SMA-906 connectors have the stepped center-pin, compared to the SMA-905 which is a simpler straight pin. It's used, for example, by the LAN Bridge 100. It's also used by the VS100, one of...

Wild Hare Computer Systems, Inc., is pleased to announce that a "Hobbyist License" is now available for legacy Data General Nova and Eclipse software. This license allows educational, hobbyist, non-commercial use of the vast amount of DG software - software that changed the world in many ways...

I have two pairs of Accuride 1" inner rails, one pair 21" and the other 23" in length. I'd like to put them to good use and thus am looking for someone in the opposite situation interested in seeing that their corresponding outer rails do more than gather dust. Data General commonly used...

I have two pairs of Accuride 1" inner rails, one pair 21" and the other 23" in length. I'd like to put them to good use and thus am looking for someone in the opposite situation interested in seeing that their corresponding outer rails do more than gather dust. Data General commonly used...

In case anyone else has been looking some of these, there is a listing for multiple tubes-of-11 on eBay at a moderate price: https://www.ebay.com/itm/123710245814 QTY-11 PCS. AMI SEMICONDUCTOR DC319 C04090 Integrated Circuit - (UIC 40378901) It’s documented in the DEC Semiconductor Data Book...

All; With the recent upgrade of the RL02 Emulator (wuhoo!) I've been contemplating getting an M8433 RL8A (hex wide) Disk Controller for the RL01/02 into operation on an Omnibus backplane. Unfortunately my M8433 came with an uncovered 2708 and the admonition that it had been ambient-UV erased...

Does anyone recognize this drive? Unable to find any references to it online, beyond the claim that it's DSDD -- which is generally consistent with the results of visual inspection. It's direct-drive with a metal-band head positioner. The metal label indicates OPTION "CDEFH" with: SPINDLE...