diff --git a/crates/xenia-app/src/main.rs b/crates/xenia-app/src/main.rs
index 9f8edc8..d3009e9 100644
--- a/crates/xenia-app/src/main.rs
+++ b/crates/xenia-app/src/main.rs
@@ -1540,8 +1540,19 @@ fn cmd_exec_inner(
                     mem.write_u32(addr, block);
                 }
                 ("xboxkrnl.exe", 0x01BE) => {
-                    // VdGlobalDevice — passed through to Vd* shims. Write 0.
-                    mem.write_u32(addr, 0);
+                    // VdGlobalDevice — a *pointer to* a global D3D-device cell.
+                    // Mirror xenia-canary RegisterVideoExports (xboxkrnl_video.cc:
+                    // 557-564): allocate a 4-byte cell, point the import slot at
+                    // it, and zero the cell. The guest's graphics init then stores
+                    // its device object INTO the cell (e.g. sub_824C6DC0 @
+                    // 0x824C6F18 `stw r31, 0([0x82000750])`), and the swap-complete
+                    // callback sub_824CE2B8 reads it back via the two-level
+                    // `[[VdGlobalDevice]+0]+15160` to bump the swap counter (clock
+                    // B). Writing 0 directly here (the old behaviour) made that
+                    // store land at address 0 and the swap counter never advance —
+                    // freezing the title-loop's per-frame manager update.
+                    let cell = alloc_zero(0x4, &mut mem, &mut kernel);
+                    mem.write_u32(addr, cell);
                 }
                 ("xboxkrnl.exe", 0x01C0) => {
                     // VdGpuClockInMHz
diff --git a/crates/xenia-app/tests/golden/sylpheed_n50m.json b/crates/xenia-app/tests/golden/sylpheed_n50m.json
index 7c165e7..70f7a6c 100644
--- a/crates/xenia-app/tests/golden/sylpheed_n50m.json
+++ b/crates/xenia-app/tests/golden/sylpheed_n50m.json
@@ -1,6 +1,6 @@
 {
-  "instructions": 50000001,
-  "imports": 451500,
+  "instructions": 50000014,
+  "imports": 178937,
   "unimpl": 0,
   "draws": 78,
   "swaps": 4,