Use configuration files to enable or disable the new dyncom interpreter.

src/core/hw/gpu.cpp

@@ -4,6 +4,7 @@
 
 #include "common/common_types.h"
 
+#include "core/settings.h"
 #include "core/core.h"
 #include "core/mem_map.h"
 
@@ -24,6 +25,9 @@ u32 g_cur_line = 0;         ///< Current vertical screen line
 u64 g_last_line_ticks = 0;  ///< CPU tick count from last vertical screen line
 u64 g_last_frame_ticks = 0; ///< CPU tick count from last frame
 
+static u32 kFrameCycles = 0; ///< 268MHz / 60 frames per second
+static u32 kFrameTicks  = 0; ///< Approximate number of instructions/frame
+
 template <typename T>
 inline void Read(T &var, const u32 raw_addr) {
     u32 addr = raw_addr - 0x1EF00000;
@@ -214,6 +218,18 @@ void Update() {
 
 /// Initialize hardware
 void Init() {
+    switch (Settings::values.cpu_core) {
+        case Core::CPU_FastInterpreter:
+            kFrameCycles = 268123480 / 2048;
+            break;
+        case Core::CPU_Interpreter:
+        default:
+            kFrameCycles = 268123480 / 60;
+            break;
+    }
+    
+    kFrameTicks  = kFrameCycles / 3;
+
     g_cur_line = 0;
     g_last_frame_ticks = g_last_line_ticks = Core::g_app_core->GetTicks();