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Very interesting. Thank you. I'm not a PBP user so I had no idea inserting an assembly code function into a PBP program was that easy.

I suspect you're coding for an 18F which has RRCF and...

Yes, in XC8 that's how you would address the "local" variables (c, f, and n) using assembly language.

Here's a slightly optimized version of the AD9850 calcFTW() function (XC8) from the previous post. This version is smaller and nearly 100 cycles faster weighing in at 42 words and 665 cycles.

I...

I enjoyed your article, Henrik, but I'm shocked at the processing overhead. I wrote and tested a simple calc_ftw() function in XC8, really not much more than a basic 32x32 multiplication routine,...