Re: Superscalar embedded processors?
- From: Ulf Samuelsson <ulf@xxxxxxxxxxxxx>
- Date: Mon, 16 Nov 2009 09:40:58 +0100
DJ Delorie skrev:
Richard Flach <RichFlach@xxxxxxxxxxx> writes:I am wondering if there are now already the first superscalar
processors available for the embedded market?
Have been for a while now. The Toshiba MeP with IVC2, for example,
can run up to 3 different insns per cycle, and the MN10300 has some
dual-opcode encodings for two insns per cycle. IIRC many TI DSP chips
run multiple insns per cycle also.
The Wikipedia page on Superscalar notes that there was a superscalar
i960 variant back in 1990.
The Embedded version of the National Semiconductor NS32764,
the "Swordfish", was IIRC available even before that (1989).
This was more or less a symmetric superscalar architecture,
while the i960 had extra paths for subsets of instruction
It was also internally overclocked from 25 MHz to 50 MHz.