Make memory watching work before sim is started

2026-11-01 21:33:04 -05:00
parent 833214b759
commit 3cf95772f5
2 changed files with 12 additions and 5 deletions
@@ -518,11 +518,12 @@ impl Emulator {
                let Some(region) = region.upgrade() else {
                    return false;
                };
-                let Some(sim) = self.sims.get_mut(range.sim.to_index()) else {
-                    return false;
-                };
                self.buffer.clear();
-                sim.read_memory(range.start, range.length, &mut self.buffer);
+                if let Some(sim) = self.sims.get_mut(range.sim.to_index()) {
+                    sim.read_memory(range.start, range.length, &mut self.buffer);
+                } else {
+                    self.buffer.extend(std::iter::repeat_n(0, range.length));
+                }
                region.update(&self.buffer);
                true
            });