AM17xx and AM18xx VFP?

Hi Mark

That is correct. AM17xx and AM18xx devices do not have the VFP9-S etc integrated with the ARM9 processor.

Regards

Mukul

Hi Mukul,

Just wanted to understand this a little more. Is the co-processor VFP9-S optional which may/may not be integrated with the ARM9 processor? In the absence of this, does one have to use the ARM core only for doing floating-point calculations?

Thanks.

Anuj Aggarwal said:

Just wanted to understand this a little more. Is the co-processor VFP9-S optional which may/may not be integrated with the ARM9 processor?

Since it is a coprocessor, I believe your assessment is true, it is upto the chip architects on whether this needs to be integrated

http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.ddi0238c/BABCJJCI.html

I don't think any of our ARM9 based processors, have this coprocessor.

I have forwarded your query on floating point calc to Sitara team. I don't have a good answer on how ARM9 can/cannot be used for floating point calcs.

Anuj,

None of the current ARM9 based parts have a FP accelerator (VFP9-S), so you would have to use the ARM core for doing floating point calculations.

But please don't forget other chips such as OMAP-L138 and OMAP-L137 which have both the ARM9 + DSP cores should you need more floating point than ARM alone can provide.