Many RetroAchievements not triggering on latest master

[pvaibhav]

Problem

Several retro achievements are not triggering.

To reproduce

Take the personality test on Dragon Warrior III (GBC) till the result is shown (after the dungeon walk). "Happy Birthday" should trigger, but it doesn't.

Or several other achievements including those in Mario that are easy to trigger.

Root cuase

I don't know fully, but it seems commit ebac427e changed the way memory is initialised, causing (m)any achievements to not be detected.

Without this commit, achievements work fine (verified on the h700 port rc7 used latest master and achievement didnt trigger, but rebasing to v6.14.0 without this commit worked).

[apommel]

I can reproduce for the specific Dragon Warrior III (GBC). But it works for the few achievements I've tested on SNES. I wonder if it's a specific thing with Gambatte? I'll try to have a look.