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HP-RT: HP’s real-time operating system from the ’90s

Posted on December 12, 2024 by Michael G
Every now and then I load OpenPA and browse around. Its creator and maintainer, Paul Weissmann, has been very active lately updating the site with new articles, even more information, and tons of other things, and it’s usually a joy to stumble upon something I haven’t read yet, or just didn’t know anything about. This time it’s something called HP-RT, a real-time operating system developed and sold by HP for a number of its PA-RISC workstations back in the ’90s. HP-RT is derived from the real-time operating system LynxOS and was built as real-time operating system from scratch with native POSIX API and Unix features like protected address spaces, multiprocessing, and standard GUI. Real-time scheduling is part of the kernel with response times under 200 µs, later improved to sub-100 µs for uses such as hospital system tied to a heart monitor, or a missile tracking system. For programming, HP-RT supported dynamic shared libraries, ANSI C, Softbench (5.2), FORTRAN, ADA, C++ and PA-RISC assembly. From HP-RT 3.0, GUI-based debugging environment (DDErt) and Event Logging library (ELOG) were included. POSIX 1003.1, 1003.1b and POSIX 1003.4a draft 4 were supported. On the software side, HP-RT supported fast file system, X and Motif clients, X11 SERVERrt, STREAMSrt (SVR 3.2), NFS, and others. ↫ Paul Weissmann at OpenPA I had no idea HP-RT existed, and looking at the feature list, it seems like it was actually a pretty impressive operating system and wider ecosystem back in the ’90s when it was current. HP released several versions of its real-time operating system, with 1997’s 3.0 and 3.01 being the final version. Support for it ended in the early 2000s alongside the end of the line for PA-RISC. I’d absolutely love to try it out today, but sadly, my PA-RISC workstation – an HP Visualise c3750 – is way too “new” to be supported by HP-RT, and in the wrong product category at that. HP-RT required both a regular HP 9000 700 HP-UX workstation, as well as one of HP’s VME machines with a single-module module with the specific “rt” affix in the model number. On top of that you obviously needed the actual HP-RT operating system, which was part of the HP-RT Development Environment. The process entails using the HP-UX machine to compile HP-RT, which was then downloaded to the VMe machine. The odds of not only finding all the right parts to complete the setup, but also to get it all working with what is undoubtedly going to be spotty documentation and next to nobody to talk to about how to do it, are very, very slim. I’m open to suggestions, of course, but considering the probable crazy rarity of the specific hardware, the price-gauging going on in the retrocomputing world, the difficulty of shipping to the Swedish Arctic, and the knwoledge required, I don’t think I’ll be the one to get this to work and show it off. But man do I want to.

Jasemin Scene #179

Posted on December 11, 2024 by Michael G

Video by via Dailymotion Source Glumac/GlumicaSerhat TutumluerCeyda DüvenciÖzge ÖzderHale AkınlıBennu YıldırımlarBatuhan KaracakayaSongül ÖdenMelda AratCenk Ertanİlker Kurtİncilay ŞahinMetin BüktelEvrim SolmazServer MutluEce HakimDevrim ÖzderErdal BilingenFurkan Andıç Go to Source

Heat wave, Jaclyn Jose at Carlos Yulo, kabilang sa top Google Searches ng mga Pinoy ngayong 2024…

Posted on December 11, 2024 by Michael G

Video by via Dailymotion Source 21 days na lang magpapalit na naman tayo ng kalendaryo! Sa nakalipas na taon, marami sa atin pinaka-ginugol ang oras sa paggamit ng social media. 24 Oras is GMA Network’s flagship newscast, anchored by Mel Tiangco, Vicky Morales and Emil Sumangil. It airs on GMA-7 Mondays to Fridays at 6:30…

💥Hell to Ball Roll Tutorial💥

Posted on December 11, 2024 by Michael G

Video by via Dailymotion Source What do you think about it?(comment) 📝 Follow @mrgeeknet for more!🇩🇪🇬🇧 Fc 25 Daily News, Tips, SBC, Fun 🔥 Buy cheap FIFA 25 coins and save 10%👇 https://www.mrgeek.net/fifa-coins/fc-25-coins #Fc25 #fifa25 #Fifacoins #futcoins #fccoins #fc25coins #fifa25coins #fut25coins Go to Source

MTDC perkukuh teknologi tempatan dengan pelancaran dana MySTI

Posted on December 11, 2024 by Michael G

Video by via Dailymotion Source Malaysian Technology Development Corporation (MTDC) melancarkan Dana Uji Beli (DUB) dan Dana Mudah Cara (DMM) di bawah program MySTI, dalam usaha memperkukuhkan inovasi dan pengkomersialan teknologi tempatan. Go to Source

The Outlast Trials Project Breach – Gameplay Trailer

Posted on December 11, 2024 by Michael G

Video by via Dailymotion Source Go to Source

Vivaha Avahanam [Trailer] – Malayalam Feature Film

Posted on December 11, 2024 by Michael G

Video by via Dailymotion Source Vivaha Avahanam [Trailer] – Malayalam Feature Film #Watch #Unlimited #Free #Movies | #No #Subscription #FeesDownload VDOJar Now | Its Free | Available on #AppStore, #PlayStore Also available on #RokuTV #FireTV #AppleTV #AndroidTV Follow us on social media. Note our handlesFacebook: vdojarofficialInstagram: vdojarX (Twitter): vdojarVisit our Website: www dot vdojar dot…

CENTRAL 98 | Alta procura por alimentos de natal eleva os preços em BH

Posted on December 11, 2024 by Michael G

Video by via Dailymotion Source As ceias de fim de ano vão exigir mais do seu bolso em 2024, os alimentos mais procurados tiveram uma alta expressiva, alimentos como uvas passas, carne suína e o famoso espumante fazem parte dessa lista. Go to Source

Delta Force | Official PC Open Beta Launch Trailer

Posted on December 11, 2024 by Michael G

Video by via Dailymotion Source Go to Source

The Double Life of Mr President

Posted on December 11, 2024 by Michael G

Author: Source Read more

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