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SCRNSAVE.COM, the first ever (known) IBM PC screensaver.
Published by John Socha (of Norton Commander) in the December 1983 issue of the "Softalk for the IBM Personal Computer" magazine. Turns the screen off after 3 minutes of inactivity.
Interestingly, while ASM code listing is provided, along with it there's also a Basic program that generates a COM file from values with a simple error check for those without an assembler. Very nice.
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