- Tetris® is the addictive puzzle game that started it all, embracing our universal desire to create order out of chaos. The Tetris game was created by Alexey Pajitnov in 1984—the product of Alexey’s computer programming experience and his love of puzzles. In the decades to follow, Tetris became one of the most successful and recognizable video games, appearing on nearly every gaming platform available. This page is the official destination for free online single-player Tetris. Click PLAY to start playing one of the world’s most popular puzzle games now!
- Two interesting XOR circuits inside the Intel 386 processor (righto.com)
Intel’s 386 processor (1985) was an important advance in the x86 architecture, not only moving to a 32-bit processor but also switching to a CMOS implementation. I’ve been reverse-engineering parts of the 386 chip and came across two interesting and completely different circuits that the 386 uses to implement an XOR gate: one uses standard-cell logic while the other uses pass-transistor logic. In this article, I take a look at those circuits.