Questions about using Debug Disassembly

[LunaMoo]

Not really, you can use search(ctrl+f / ctrl+s ~ makes life easy;p), but it's mostly usefull for searching opcodes and functions. If you type in some value like "50" it would stop on every address or opcode which includes "50" which is not something you want to do when having mb's of memory to search through.
PPSSPP disassembly is very powerfull tool, don't remember any emulator I used where I spent soo much time with it's built-in tools as this, but at the same time it's not something to use without having some kind of experience with assembly.

To just search for some values you'll have better luck with external programs like cheat engine which have many advanced scan features and can compare results.
Just a few notes about CE + PPSSPP:
- you have to select "mem_mapped" in edit>settings>scan settings otherwise you'll not even find psp memory inside ppsspp(except memory mirrors which changing will do nothing;p),
- you cannot freeze values with any decent refresh rate since it might crash,
- you will also have to either calculate emulated psp address or make use of a pointer/aob scan to get the actual address since it's not static, it's generally better to do it before searching for values, to limit scan only to psp memory,
- last thing which should be obvious - CE supports only x86 assembly, so you're loosing like most of it's advanced features when using it for emulators, basically use it only as a search engine.