what's the core of TMS570

Hi Chloe,

The core is listed in the table, on the first row. It's either just the Cortex R4 or the Cortex R4F.
The R4 and R4F are the same CPU core but the R4F has the VFPv3D16 (double precision floating point coprocessor). The R4 only has fixed point instructions. They both are code compatible except for floating point, if you use the entry level R4 and you use floating point you will have to pick the floating point library option when compiling. Otherwise for the R4F when you compile you can pick the floating point coprocessor and the compiler will emit VFP instructions for you.

The CPU core documentation is on ARM's website. infocenter.arm.com/.../index.jsp