BSPs for Potential Deprecation

Jay Monkman jtm-list-rtems at
Thu Oct 28 21:43:37 UTC 2004

On Thu, Oct 28, 2004 at 03:54:24PM -0500, Joel Sherrill <joel at> wrote:
> I get terribly confused with the differences in the various MIPS CPU 
> models so please bear with me.

Me too.

> Are the CPU models used by the p4000/p4600/p4650 BSP MIPS32 ones?  I
> thought they were the Orion's which are some older 64-bit embedded
> MIPS variant.  Is this what became known as MIPS32?

No, they aren't MIPS32. I don't think MIPS32 even existed when those
CPUs came out. Also, the p4650 has 64 bit registers, while MIPS32 has
32 bit registers. (I couldn't find any documentation on the 4000 or

> So if you have a functioning MIPS32 BSP and I asked you to write
> one for the ITD 4650, would it be of any use?

I don't think so.

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