[Dolphin] Illegal Instruction in Code

[wolverine3196]

Hey there,

I'm looking at Melee(1.02)'s code in the debug version of Dolphin, and see that some of the instructions listed are (ill), which I assume means illegal operations. For example:

​

What's this about?

 

[flieskiller]

Hey there,

I'm looking at Melee(1.02)'s code in the debug version of Dolphin, and see that some of the instructions listed are (ill), which I assume means illegal operations. For example:

​

What's this about?

If I'm not mistaken, these are parts of code that aren't read like the DOL, but are information read and written as RAM.

 

[wolverine3196]

1. Is it safe to assume that these "instructions" won't ever be executed?
2. If an illegal instruction is executed, what happens? Crash?
3. Will these addresses with illegal instructions ever be written to, to change them to legal instructions?

Thanks!

 

[flieskiller]

1. Is it safe to assume that these "instructions" won't ever be executed?
2. If an illegal instruction is executed, what happens? Crash?
3. Will these addresses with illegal instructions ever be written to, to change them to legal instructions?

Thanks!

1. Yes, it's safe to assume that
2. You can test that yourself
3. The DOL never gets edited by the program itself, so it will never go "out of bounds" and will stay in the DOL part.