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The interior of the game diskette package. The disk is not a 3.5" disk nor an Amstrad-type disk. It may be of the miniature disk format used by some old samplers, synthesisers and word processors.
In the 1980s, Acorn developed the ARM CPU (as seen in your iPhone) and a workstation operating system for it named RiscOS. The ARM CPU has evolved into a lot of tiny systems, and RiscOS has become almost free; here it is running on a tiny board named the BeagleBoard. It's a workstation that fits in a pocket.
Dumping the contents from the varius RL02 diskpack present in the museum archive, using a MicroVAX II clustered with a simh system with VMS, the old PDP 11/34 of the museum, and the RL02 drive from the "new" PDP 11/23.
Freaknet Museum - museum.dyne.org
I've been getting some home-made ZX Spectrum programs off cassettes that have been various lofts for decades. Amazingly, most still load. See github.com/blogmywiki/ZXSpectrum for files you can load in emulators.
Assembled and running my PongClock.prc (which you can find here)
The program includes logic which disables the auto-off feature if it finds 2.75V or greater at startup.
This is my second PalmOS program, I wrote CountDown more than 10 years ago. Writing this one in 2010 wasn't easy, it may count as Retrocomputing. The tools I used back then were lost. I ended up using a Metrowerks CodeWarrier Lite I still had on CD. It won't even install on my new (Windows 7) laptop.