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It's not the most inovative idea today, but anyhow: For a recent Vintage Computer Convention I set up an ASR-33 teletype to be operated with connection to chatGPT AI application. Visitors could enter questions via keyboard of course, but also punch them on paper tape and read them back later...

Guys, Starting 2024 fun! Something new&nerdy here: https://www.retrocmp.com/projects/diode-rom-book A video showing operation will follow. kind regards, Joerg

Hi, the UNIBUS DISPLAY register at 777570 give access to user LEDs on the old front panels. There seems to be not much talk about it. Is there any documented use by DEC itself, any OS, or is it just user playground? And was it ever implemented on any QBUS machine, even as an invisible dummy...

Hi, I had to find alternatives for the DS8641 bus driver chips ... seems they are all gone now. Choice for QBone is now AM26S10. Some thoughts have gone to http://www.retrocmp.com/projects/qbone/326-qbone-unibone-alternative-bus-drivers which can be enhanced. Any thoughts on that matter ...

Hi, FYI: Josh Dersch has written new UniBone emulationen for RS11/RF11 DECdisk and the KE11 EAE (11/20 arithmetic). Now he's able to run UNIX v1 on his bare 11/20 box. Thats's thrilling ... we're currently test 11/05 and good old '34 as other platforms. Thanks for this work! Joerg Unix V1...

Hi all, after RX01 now also the RX02 drive is emulated in UniBone + QBone. The RX211+RX02 combo passes the ZRXF and ZRXD diags, and boots RT11.5.4 This is exciting, as now all the floppy-based software can be used. For example, use QUniBone to emulate just the RX floppy system in a PDP-11...

Hi all, Both UniBone and QBone support now the RX01 dual-floppy drive. I verified the ZRXAF0 and ZRXBF0 diagnostics, as well as LSX-Unix and RT11 on a 11/23+ CPU. I made it mainly to run LSX-Unix on QBone with a LSI11/03 CPU. LSX is surely the smallest UNIX ever: runs in 56K RAM, the...

Hi all, In february 2018 Oscar (Vermeulen) and me where allowed do make hour-long tests with "Miss Piggy" . That's the PDP-11/70 for exhibit in LCM Seattle, a former Microsoft server. Goal was to make an exact emulation of the front panel operation, necessary for BlinkenBone and the PiDP11. In...

Hi guys, Its been a long time since last public post about UniBone/QBone project, but 2020 is ending: Time for some update. In case you forgot: "UniBone" is a plugin board to DEC UNIBUS systems containing a BeagleBone Black. "QBone" is the current development for QBUS. These combos can...

Hi, for my German PDP fellows I recently designed a variety of FlipChip-Extender PCBs. Project babble and Gerber files for single, dual, quad and hex-width boards are here: http://www.retrocmp.com/tools/dec-flip-chip-extenders We're populating the PCBs with recycled Flip-Chip sockets at the...

Hi, After half a year I can dump out these UniBones again. Seems I lost contact to several interested guys, hope this broadcast helps. Info: http://www.retrocmp.com/projects/unibone Conditions: http://www.retrocmp.com/projects/unibone/283-unibone-getting-one best regards, Joerg

Hi, I'm preparing a RT-11 distro for a "living" museum PDP-11/34 and like to have ELIZA there. I ported an ALTAIR version to BASIC-11 (see below), which labels itself as "inferior imitation". The DECUS-TECO implementation also claims to be "less powerful" than the Weizenbaum LISP version...

Hi all, I just managed to fit these small chinese volt meters into into a DEC card handle. http://www.retrocmp.com/tools/unibus-spc-g7273-diagnostics Joerg

Its been a long time since last public post about UniBone, time for a bragging broadcast. What it is: In case you forgot: UniBone is a plugin board to DEC PDP-11 UNIBUS systems containing a BeagleBone Black. See http://retrocmp.com/projects/unibone. This combo can simulate PDP-11 devices...

Hi, most people dealing seriously with older PDP-11s have found means to monitor the UNIBUS traffic. My latest approach is www.retrocmp.com/tools/uniprobe UniProbe is a M9302 terminator, a LED display, a probe for logic analyzer. It can be mounted in Standard or Modified UNIBUS sockets. I'm...

Hi guys, There is now a special 11/40 adapter board for the BlinkenBone system. With that you can plug a physical 11/40 panel to the extended SimH running on a BeagleBone. Surprisingly there was some demand for the 11/70 panel adapter, so the adding the '40 panel may be worth mentioning...

Hi guys, I finished "UniBone" - a Linux-to-UNIBUS bridge, based on the BeagleBone Black. It is supposed to be a Linux based development platform for PDP-11 device emulation. At the moment it - can emulate memory, - emulate an RL11 controller with 4 RL drives attached, - contains a simple...

I update the PDP-11 diagnostic database with new content from bitsavers ... first change after 3 years. Not much has changed, approx. 30 new files. And a bug noticed by "shattered" from http://www.vcfed.org/forum/showthread.php?24206-Digital-Equipment-Corporation-MicroFiche-Underground was...

Hi, "pdp11monloader" is a command line tool to download code into PDP-11s over serial console monitor. Every PDP-11 freak has written such a program, now there's one more! You can select between ODT, M9312 and M9301 console monitors, and load code files as address-value text, papertape image...

Guys, This is a typical "look what I did" posting: "LSIbox" is a micro-Linux system used as front-end processor for a QBUS PDP-11. Core is a BeagleBone with 4 UARTs and GPIOs, connected to H9270 backplane. You can remote control the front panel, download code and start it over ODT console...