Long-time Slashdot reader ardiri remembers his days writing applications for the Palm OS. And he's now released approximately 1.5 GB of historical Palm OS development resources, "accumulated during the early days of handheld computing and preserved on hard drive backups for more than 25 years... to preserve the tools and knowledge that helped define an important era of personal computing."The collection includes historical SDKs, developer conference presentations, technical documentation, programming examples, limited source code, and development utilities. (ROM images, commercial applications, and simulator binaries have deliberately been excluded....) Making a broader collection of development resources available to the retrocomputing community, the archive is available at GitHub.com/ardiri/dev-palmos and is intended for historical preservation, education, and research, particularly as enthusiasts continue working to maintain, emulate, and revive the platform... Ardiri has also written an auto-biography and has started explored the engineering principles behind these systems in his books. And somewhere along the way, Ardiri rediscovered the original source code for "The Palm OS Virus That Never Was — Lost for 25 Years, Found in 2026." Lurking on a CompactFlash card containing files dated June 2001, he found the self-replicating Palm OS virus that he'd developed and tested in June 2001, months before the planned PalmSource developer conference in San Jose.Named 'Virii,' the virus intercepted Palm OS system calls to progressively infect legitimate applications while preserving their original functionality. Infected applications could then spread between handheld devices through infrared beaming, potentially allowing an infection to propagate among hundreds of developers exchanging software at the conference. The virus also included a date-triggered payload designed to interfere with system time reporting between October 23 and 27, 2001, potentially causing erratic clocks, unreliable alarms, and missed appointments. He promises the functional source code and binaries will remain private.Read more of this story at Slashdot.