From The Free On-line Dictionary of Computing (8 July 2008) [foldoc]:
i860
<processor> 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)