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Intel 8042: what are "test inputs"? - Electrical Engineering Stack Exchange
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Tube Time (@tubetime@mastodon.social) on Twitter: "this little guy is the 8042. normally it just controls the keyboard, but on the IBM AT, they gave it control over the address line 20 gate...
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Table II from Design of Implementation of a Compatible Keyboard Controller for Keyboards and Mice | Semantic Scholar
8042 Keyboard Controller - YouTube
PS/2 Keyboard
PS/2 Keyboard
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IMG_4949.jpg
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ENDED] IBM keyboard controller manual
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