Latest build of MATR, showing device selection, and logging of different FAT partitions on the same media.
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https://www.youtube.com/watch?v=DcfXRyXZ9lc
Preliminary test of completely rewritten window manager, running with new interrupt handler which has freed up about 150,000-200,000 machine cycles per second.
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https://www.youtube.com/watch?v=dCYXoGi20v4