dict.org

The DICT Development Group


Search for:
Search type:
Database:

Database copyright information
Server information
Wiki: Resources, links, and other information


1 definition found
 for Intel 80186
From The Free On-line Dictionary of Computing (18 March 2015) :

  Intel 80186
  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)
  

Questions or comments about this site? Contact webmaster@dict.org