The Free On-line Dictionary of Computing (30 December 2018):

i860

    A 32/64-bit superscalar RISC microprocessor
   from Intel, released in 1989.  Originally codenamed "N10".
   It has a 32-bit integer ALU and a 64-bit floating-point
   unit.  It has a 64-bit data bus with an initialisation mode
   which only uses eight bits of the data bus to allow the use of
   a small boot ROM.  It has a 32-bit wide instruction cache
   and a separate 64-bit wide data cache.  It uses register
   scoreboarding and register bypassing.  The clock rate is
   33 MHz with a clock-doubled version available.

   (1998-03-28)