core z80, partially revert ebde43d (bus blocking DMA)

it causes audio lag in OD2
libretro · May 23, 2024 · 3b480be · 3b480be
1 parent b720950
commit 3b480be
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/pico/memory.c b/pico/memory.c
@@ -1372,7 +1372,8 @@ static void access_68k_bus(int delay) // bus delay as Q8
   // TODO: if the 68K is in DMA wait, Z80 has to wait until DMA ends
   if (Pico.video.status & (PVS_CPUWR|PVS_CPURD)) {
     z80_subCLeft(z80_cyclesLeft); // rather rough on both condition and action
-    Pico.video.status |= PVS_Z80WAIT;
+    // TODO the next line will cause audio lag in Overdrive 2 demo?
+    //Pico.video.status |= PVS_Z80WAIT;
   }
 
   // 68k bus access delay for z80. The fractional part needs to be accumulated