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Investigating SSMEC's (State Micro) 486s with the UCA

Released in September 1989 by Intel, the legendary 486 CPU enjoyed widespread popularity in numerous PCs for many years before being gradually replaced by the Pentium and its successors. This era profoundly influenced the entire CPU industry for decades. Up until then, only Intel designed x86 microa

The goal was to establish China as a competitive player in the global semiconductor industry, reduce reliance on foreign technologies, foster in-house innovation, and acquire Chinese-controlled intellectual property. Notably, Tsinghua Unigroup also owns “ Yangtze Memory Technologies Corp ” (better known as YMTC), the first Chinese-owned company to design and mass-produce the critical 3D NAND Flash used in smartphones and SSDs. Another intriguing possibility is that they were produced to ensure long-term support for critical systems designed in the 90s, such as military applications, energy infrastructures (like nuclear or oil), or heavy civil technologies.

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