o cleanup

tools/bsnes/cpu/scpu/timing/event.cpp

@@ -0,0 +1,35 @@
+#ifdef SCPU_CPP
+
+void sCPU::queue_event(unsigned id) {
+  switch(id) {
+    //interrupts triggered during (H)DMA do not trigger immediately after
+    case EventIrqLockRelease: {
+      status.irq_lock = false;
+    } break;
+
+    //ALU multiplication / division results are not immediately calculated;
+    //the exact formula for the calculations are unknown, but this lock at least
+    //allows emulation to avoid returning to fully computed results too soon.
+    case EventAluLockRelease: {
+      status.alu_lock = false;
+    } break;
+
+    //S-CPU WRAM consists of two 64kbyte DRAM chips, which must be refreshed
+    //once per scanline to avoid memory decay.
+    case EventDramRefresh: {
+      add_clocks(40);
+    } break;
+
+    //HDMA init routine; occurs once per frame
+    case EventHdmaInit: {
+      cycle_edge_state |= EventFlagHdmaInit;
+    } break;
+
+    //HDMA run routine; occurs once per scanline
+    case EventHdmaRun: {
+      cycle_edge_state |= EventFlagHdmaRun;
+    } break;
+  }
+}
+
+#endif