Nice :)

Yup, that's right. movc will function like a mov except that it will mov the value stored in the address which dptr points to (assuming you've cleared a).



cseg is a directive to tell your assembler/linker where a code segment is versus say a data segment. There are other directives like bseg, dseg, and iseg. Cseg is just a directive to say "code lives here." Check out the A51 manual for more info.


I assume you're talking about using movc to read from code memory here. If that's the case, yeah you'll probably have to clear a ever time and inc the dptr. It's not always a necessity depending on what you want to do, but I'm guessing in your case you should.



Yes, depending on your microcontroller. I'm not familiar (beyond datasheet browsing) with Atmel parts, but I'm sure that there are some (probably yours included) that can write to their own flash. When you do this though you'll probably have to erase an entire page of flash as typically writes can only make a bit 1 so if you want to change something like 010 to 101 you would need to erase it all first (make it 000) and then write 1x1). Often when you do this you can't write a zero. Long story short, yeah you should be able to do it.



no problem :)