Outsoftware · Digital preservation · 2016–present

The collection preserves original media and their copy protection. Supplied backup copies are also used to document the software and are identified in the screenshot captions.

Digital preservation / Sinclair QL

Argumentprincipen — diagrammi di Nyquist

Floppy IMG derived from archived files. Mount as FLP1 and boot using Minerva 1.98a1 ROM, 640 KiB emulator RAM and Toolkit II 2.32. Entered P(z)=z and a radius-one semicircular contour in the left half-plane. Drew the expected curve, with five points independently checked on the screen. Also preserved the compiled version, separately exercised with the JS ROM. Printing and higher-degree polynomials were not tested. Basic functional check in sQLux, not full validation or a physical-hardware test. Audio untested. ROMs are not included.