If I say,
if a == 10 b = b * 4 + 2
if it does then do 'b = b * 4 + 2' or skip doing it? Would it be BNE or BEQ?
Something tells me it's DON'T DO...
Thanks
Something tells me you should learn how to use a debugger.
And maybe look at the assembler output of a C compiler.
Consider the difference between jumping to code or jumping around code - that represents a negation of the conditional test.
Something tells me you suck at helping and possibly are a troll.
I'm aware that conditional branch looks at flags.
Stop being so negative!
Either BEQ or BNE could be used. It simply depends on how your code flows.
Why don't you try breaking your code up a little more and see what might be the best solution?
You must surely be able to see that it could flow something like:
CMP A,#10 BNE Skip Do the maths Skip: Continue
But if your code was part of a subroutine it might be:
CMP A,#10 BEQ Continue return Continue: Do the maths return
I'll assume you can interpret my pseudo code/instructions.
It's good that you know that conditional branches looks at flags.
But a couple of questions:
Have you tried to write the code in C and then tried to singlestep through the code in a debugger? No need to use the Keil compiler/debugger - the concept is the same with other compilers or other processor architectures. The only important thing is to not turn on optimization, since that makes it harder to follow the code flow. That would have let you quickly see how a compiler implements comparisons and jumps and from that builds different conditional and loop constructs.
And did you consider the difference of jumping to code, or jumping around code? Because that answers your question if you should use a test for equal or not equal.
You did get excellent help, but decided to ignore it, because it involved own work.
Why do students often get own assignments - might it be because it's a great way to learn? You can't expect to learn if you aren't willing to spend time thinking. And you can't expect to get good help if you claim "troll" if the help requires you to think.
Ok, I apologize. The thing is that I don't know C or any other programming languages. I started learning Assembly a few weeks ago. It easier for me to understand by looking at the solution with comments rather than reading text. Maybe that's wrong but for now this is grasp the material I'm learning.
It easier for me to understand by looking at the solution with comments rather than reading text.
Both can be useful, but the Internet is truly resplendent with examples. It's well worth taking to learn to use sensible search parameters.