Outsoftware

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

Least Squares Plot — Harding / Lindroos

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. Read points (1,3), (2,5), (3,7) and coefficients 1,2; plotted y=1+2x with all three points overlaid. Fixed the constant polynomial basis term to avoid QDOS overflow for 0^0. Coefficient generation with LSQFIT was not tested. Basic functional check in sQLux, not full validation or a physical-hardware test. Audio untested. ROMs are not included.

Least Squares Plot — Harding / Lindroos — Read points (1,3), (2,5), (3,7) and coefficients 1,2; plotted y=1+2x with all three points overlaid. Fixed the constant polynomial basis term to avoid QDOS overflow for 0^0. Coefficient generation with LSQFIT was not tested.
Read points (1,3), (2,5), (3,7) and coefficients 1,2; plotted y=1+2x with all three points overlaid. Fixed the constant polynomial basis term to avoid QDOS overflow for 0^0. Coefficient generation with LSQFIT was not tested. · sQLux
Source: least-squares-plot-harding-lindroos.img

least-squares-plot-harding-lindroos.img

Derived Working IMG selected by the curator. This is not a public-domain declaration; rights remain with their respective holders.

Download Working IMG720 KB · IMG

Platform
Sinclair QL
SHA-256
7f22cfddedc3ff062cfcc61d2dece7f80ff411263e3283333268346b99387ceb
File timestamp

Timestamp stored in the original ZIP; timezone unspecified. It does not certify the dump acquisition date.

Media contents (4)
QDOS floppy directory
Original nameTypeByte
bootQL file274
main_basQL file13.387
original_basQL file13.358
points_datQL file20

Names are preserved as recorded on the medium. “≤” indicates allocated space, not the exact file length.