Outsoftware

IT EN SP

Menu

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

Contour Plot — Jan R. M. Håkansson

Floppy IMG derived from archived files. Mount as FLP1 and boot using Sinclair JS ROM, 2048 KiB emulator RAM and Toolkit II 2.32. Loaded a 5×5 grid of x²+y² and drew the level-one contour. Independently checked twelve screen points predicted by linear interpolation of the grid. The polygon approximates the unit circle; tested with the JS ROM. Printing and interactive formula entry were not tested. Basic functional check in sQLux, not full validation or a physical-hardware test. Audio untested. ROMs are not included.

Contour Plot — Jan R. M. Håkansson — Loaded a 5×5 grid of x²+y² and drew the level-one contour. Independently checked twelve screen points predicted by linear interpolation of the grid. The polygon approximates the unit circle; tested with the JS ROM. Printing and interactive formula entry were not tested.
Loaded a 5×5 grid of x²+y² and drew the level-one contour. Independently checked twelve screen points predicted by linear interpolation of the grid. The polygon approximates the unit circle; tested with the JS ROM. Printing and interactive formula entry were not tested. · sQLux
Source: contour-plot-jan-r-m-hakansson.img

contour-plot-jan-r-m-hakansson.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
90082ad40b476ef288b2c8a02e4eea7ae24c7d84cf22086b67fc23cab1141ccd
File timestamp

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

Media contents (88)
QDOS floppy directory
Original nameTypeByte
GPRINT_CODEQL file510
original_bootQL file2.485
parameterplot_exeExecutable29.350
odesolve_exeExecutable43.178
implicitplot_exeExecutable29.096
surfaceplot_exeExecutable29.678
curveplot_exeExecutable40.124
toolkit_extQL file3.648
curveplot_txtQL file6.692
parameterplot_txtQL file4.515
contourplot_txtQL file2.672
odesolve_txtQL file9.796
implicitplot_txtQL file2.885
surfaceplot_txtQL file1.061
example_equQL file649
contour_dataQL file4.665
boot2QL file2.779
w_zeroinQL file12.727
W_FMINQL file12.885
w_splineQL file20.418
W_ROMBQL file4.172
w_quanc8QL file6.345
W_RK4_1QL file4.313
W_RK4_2QL file14.415
W_FFT_1QL file4.466
W_FFT_2QL file11.953
W_DSOLVEQL file6.059
W_JACOBIQL file3.737
W_REGLINEQL file10.377
W_LSQFITQL file12.404
W_LSQPLOTQL file13.358
P_ZEROINQL file1.448
P_FMINQL file1.689
P_SPLINEQL file1.858
psplineQL file1.858
P_ROMBQL file750
P_QUANC8QL file2.459
P_RK4QL file562
P_RKFQL file2.379
P_RKF45QL file5.916
P_FFTQL file1.196
P_ELIMQL file1.237
P_DSOLVEQL file2.488
P_INVERTQL file2.688
P_JACOBIQL file2.485
P_SVDQL file5.791
L3_GRAPHQL file27.182
L3_IMPQL file26.986
L3_SURFQL file21.839
L1_2DQL file7.420
L1_3DQL file8.751
L1_BARQL file587
L1_SECQL file993
L2_SURFQL file1.106
L2_XYZQL file912
L2_XYQL file825
L1_CNTRQL file1.067
L2_STERQL file1.225
L2_STSUQL file1.415
L2_CN2DQL file1.101
L2_CN3DQL file1.043
L2_HISQL file841
L2_PIEQL file931
L2_HIX1QL file403
L2_HIX2QL file340
L2_PIX1QL file412
L2_XYX1QL file389
L2_XYX2QL file326
L2_XYZ1QL file367
L2_XYZ2QL file429
L2_C2X1QL file359
L2_C3X1QL file359
L2_C3X2QL file358
L2_SUX1QL file341
L2_SUX2QL file334
L2_SUX3QL file2.715
L2_STX1QL file421
L2_SSX1QL file336
L1_3DX1QL file473
L1_CNX1QL file681
L1_CNX2QL file698
L1_BAX1QL file526
L1_BAX2QL file591
L1_SEX1QL file617
L2_SUX5QL file10.195
contourplot_exeExecutable25.432
bootQL file125
fixture_dataQL file128

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