资料来源 : Free On-Line Dictionary of Computing

Intel 80186
     
         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 MHz.  They were not used in many
        computers, but one notable exception was the {Mindset}, a very
        advanced computer for the time.  They were used as {embedded
        processors}.
     
        One major function of the 80186/80188 series was to reduce the
        number of chips required.
     
        "To satisfy this market, we defined a processor with a
        significant performance increase over the 8086 that also
        included such common peripheral functions as
        software-controlled wait state and chip select logic, three
        timers, priority interrupt controller, and two channels of DMA
        (direct memory access).  This processor, the 80186, could
        replace up to 22 separate VLSI (very large scale integration)
        and TTL (transistor-transistor logic) packages and sell for
        less than the cost of the parts it replaced."
     
        -- Paul Wells of Intel Corporation writing in Byte (reference
        below)
     
        New instructions were also introduced as follows:
     
         ENTER	Make stcak frame for procedure parameters
         LEAVE	High-level procedure exit
         PUSHA	Push all general registers
         POPA	Pop all general registers
         BOUND	Check array index against bounds
         IMUL	Signed (integer) multiply
         INS	Input from port to string
         OUTS	Output string to port
     
        ["The Evolution of the iAPX 286", Bob Greene, Intel
        Corporation, PC Tech Journal, December 1984, page 134].
     
        ["The 80286 Microprocessor", Paul Wells, Intel Corporation,
        Byte, November 1984, p. 231].
     
        (1999-05-10)