Making Defend Reduce Physical Damage by 50% (ASM Hacking)

[Paheej]

So I've Downloaded FFTorgASM and I noticed it has a hack called "Defend Reduce Physical Damage by 25%" which is pretty cool.  But I think that it should reduce damage by 50% (or maybe 33%) considering it not only takes you an action but also takes a slot.

I figure this should be a simple fix, but I have no clue about how to do that.  Is there a guide or thread about this?  A search turned up some ASM request threads but they all seem to just be people requesting things that one person puts into the FFTorgASM program.

[MiKeMiTchi]

have you looked into this?
http://ffhacktics.com/wiki/ASM_Hacking

[Paheej]

I've seen the Wiki, but I didn't see the "Defend Reduce Physical Damage by 25%" hack there.  I assume it was a recent addition.  On the other hand I noticed the code/location for Statuses -> Defending is there which I assume is what you have to edit.

[Vanya]

What I would do is copy down the hex values of that ASM hack and download a document with the op code values for MIPS ASM.
Once you have the information on the op codes and know what they do it should be easy to identify the instruction that does the division.
Then all you have to do is adjust it accordingly.

[Paheej]

Another ASM question.  Most status type stuff has a default chance of happening 25% of the time.  Is there any way to set this to 33%?  I was thinking mainly for geomancers but it wouldn't be that huge of a deal if it happened everywhere.

Random other question - Can I replace Byblos with a custom class/sprite/character?  I think it seems you can but . . .