Mcp1600

1 definition found

From The Free On-line Dictionary of Computing (27 SEP 03) [foldoc]:

  MCP-1600
       
          A processor made by {Western Digital}, consisting of at least
          four separate {integrated circuit}s, including the control
          circuitry unit, the {ALU}, two or four {ROM} chips with
          {microcode}, and timing circuitry.


       
          The ALU chip contained twenty-six 8-bit {register}s and an
          8-bit {ALU}, while the control unit supervised the moving of
          data, memory access, and other control functions.  The {ROM}
          allowed the chip to function as either an 8- or 16-bit chip,
          with clever use of the 8-bit {ALU}.  Further, {microcode}
          allowed the addition of {floating-point} routines (40 + 8 bit
          format), simplifying programming (and possibly producing a
          floating-point coprocessor).
       
          Two standard {microcode} {ROM}s were available.  This
          flexibility was one reason it was also used to implement the
          {DEC} {LSI-11} processor as well as the {WD} {Pascal
          Microengine}.
       
          (1994-11-18)