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 your PC [why?], rather than use it elsewhere. Intel admits that in some systems you can unplug the 486SX and fit a 487SX in its place but they don’t guarantee that it will always work.
See Intel 486.
- 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 […]
- Intel 80188
processor A version of the Intel 80186 with an 8 bit external data bus (instead of 16 bit). This makes it cheaper to connect to peripherals. (1995-01-13)
- Intel 80286
processor (Or “286”, “i286”) A microprocessor developed by Intel. THe 80286 processor has a 16-bit data bus and incorporates a memory management unit that allowed a limited amount of multitasking. The 80286 only has a segmented MMU while the later processors add a paged MMU “behind” the segmented one. The 80286 was the processor in […]