The stack circuitry of the Intel 8087 floating point chip, reverse-engineered

Early microprocessors were very slow when operating with floating-point numbers. But in 1980, Intel introduced the 8087 floating-point coprocessor, performing floating-point operations up to 100 times faster. This was a huge benefit for IBM PC applications such as AutoCAD, spreadsheets, and flight simulators. The 8087 was so effective that today's computers still use a floating-point system based on the 8087.1 The 8087 was an extremely complex chip for its time, containing somewhere between 40,0...