TIMER_RATIO set to 12. Bus clock should be 1/3 of CPU clock.

This could slowdown games but it's indeed more accurate. So, possible perf hack there.

git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@1194 8ced0084-cf51-0410-be5f-012b33b47a6e

Source/Core/Core/Src/HW/SystemTimers.cpp

@@ -38,10 +38,12 @@ u32 CPU_CORE_CLOCK  = 486000000u;             // 486 mhz (its not 485, stop bugg
 
 s64 fakeDec;
 
-//ratio of TB and Decrementer to clock cycles
-//4 or 8? not really sure, but think it's 8
+// ratio of TB and Decrementer to clock cycles
+// With TB clk at 1/4 of BUS clk
+// and it seems BUS clk is really 1/3 of CPU clk
+// note: ZWW is ok and faster with TIMER_RATIO=8 though.
 enum {
-	TIMER_RATIO = 8
+	TIMER_RATIO = 12
 };
 
 int et_Dec;