One of Intel’s Intel 486 family of microprocessors (one of the last before the Pentium). The 486DX has a working built-in floating point unit (FPU). The Intel 486SX is effectively a DX with the FPU disabled. The DX has a pin to select the external data bus width (16 or 32).
The Intel 487SX is a 486DX with a 486SX pinout.
- Intel 486sx
processor An Intel 486DX microprocessor with its floating-point unit disconnected. All 486SX chips were fabricated with FPUs. If testing showed that the CPU was OK but the FPU was defective, the FPU’s power and bus connections were destroyed with a laser and the chip was sold cheaper as an SX, if the FPU worked it […]
- Intel 487sx
processor A version of the Intel 486DX microprocessor with an extra pin, for use in the coprocessor socket of an Intel 486SX system. The 487SX provides the FPU which is missing in the 486SX. Although the 486SX is completely disabled when you install a 487SX, the 487SX design requires that you leave the 486SX in […]
- Intel 8008
processor A microprocessor intended for use as a terminal controller, and similar to the Intel 4040. The 8008 had a 14-bit PC and addressing and an eight level internal stack. It was followed by the Intel 8080. [Date?] (1994-10-31)
- Intel 80186
processor A microprocessor developed by Intel circa 1982. The 80186 was an improvement on the Intel 8086 and Intel 8088. As with the 8086, it had a 16-bit external bus and was also available as the Intel 80188, with an 8-bit external data bus. The initial clock rate of the 80186 and 80188 was 6 […]