dspic code not used?

drolleman · Guest

When using a 30f or 33f part, does ccs use the enhanced instructions? When I compile in 24f or 33f the code seems very close.

FvM · Joined: 27 Aug 2008 Posts: 2337 Location: Germany

I'm only using PIC24 up to now, but I never heard about enhanced instructions. Can you give an example of an instruction specific to dsPIC30/33?

Guest · Posted: Mon Apr 13, 2009 12:19 pm

In dsPic there are 2 40 bit accumulators. These can be used for math calculations. Microchip uses them for like sound calculations but any application that has math functionality could benefit from these.

FvM · Joined: 27 Aug 2008 Posts: 2337 Location: Germany

Yes, thank you, I see.

I don't think, that's the dsPIC accu and respective instructions are supported by PCD. As far as I understand, also Microchip C30 support for dsPIC is limited to assembly level and DSP specific libraries.