diff --git a/Source/RSP/Interpreter CPU.c b/Source/RSP/Interpreter CPU.c
index ee264b6a0..bc5d7c74b 100644
--- a/Source/RSP/Interpreter CPU.c	
+++ b/Source/RSP/Interpreter CPU.c	
@@ -457,6 +457,15 @@ DWORD RunInterpreterCPU(DWORD Cycles) {
 			RSP_NextInstruction = NORMAL;
 			*PrgCount  = RSP_JumpTo;
 			break;
+		case SINGLE_STEP: 
+			*PrgCount = (*PrgCount + 4) & 0xFFC; 
+			RSP_NextInstruction = SINGLE_STEP_DONE;
+			break;
+		case SINGLE_STEP_DONE:
+			*PrgCount = (*PrgCount + 4) & 0xFFC; 
+			*RSPInfo.SP_STATUS_REG |= SP_STATUS_HALT;
+			RSP_Running = FALSE;
+			break;
 		}
 	}
 	return Cycles;
diff --git a/Source/RSP/Interpreter CPU.h b/Source/RSP/Interpreter CPU.h
index 520a70ec1..7dbd5becf 100644
--- a/Source/RSP/Interpreter CPU.h	
+++ b/Source/RSP/Interpreter CPU.h	
@@ -24,9 +24,17 @@
  *
  */
 
-#define NORMAL			0
-#define DELAY_SLOT 		1
-#define JUMP	 		2
+#define NORMAL				    0
+#define DO_DELAY_SLOT 			1
+#define DELAY_SLOT 				2
+#define DELAY_SLOT_DONE			3
+#define DELAY_SLOT_EXIT			4
+#define DELAY_SLOT_EXIT_DONE	5
+#define JUMP	 				6
+#define SINGLE_STEP	 		    7
+#define SINGLE_STEP_DONE		8
+#define FINISH_BLOCK			9
+#define FINISH_SUB_BLOCK		10
 
 extern DWORD RSP_NextInstruction, RSP_JumpTo, RSP_MfStatusCount;
 
diff --git a/Source/RSP/Interpreter Ops.c b/Source/RSP/Interpreter Ops.c
index f0b4437e2..fa3697aed 100644
--- a/Source/RSP/Interpreter Ops.c	
+++ b/Source/RSP/Interpreter Ops.c	
@@ -436,8 +436,15 @@ void RSP_Cop0_MT (void) {
 			RSPInfo.CheckInterrupts();
 			RSP_Running = FALSE;
 		}
-		if ( ( RSP_GPR[RSPOpC.rt].W & SP_CLR_SSTEP ) != 0) { *RSPInfo.SP_STATUS_REG &= ~SP_STATUS_SSTEP; }
-		if ( ( RSP_GPR[RSPOpC.rt].W & SP_SET_SSTEP ) != 0) { *RSPInfo.SP_STATUS_REG |= SP_STATUS_SSTEP;  }
+		if ( ( RSP_GPR[RSPOpC.rt].W & SP_CLR_SSTEP ) != 0) 
+		{
+			*RSPInfo.SP_STATUS_REG &= ~SP_STATUS_SSTEP; 
+		}
+		if ( ( RSP_GPR[RSPOpC.rt].W & SP_SET_SSTEP ) != 0) 
+		{
+			*RSPInfo.SP_STATUS_REG |= SP_STATUS_SSTEP;  
+			RSP_NextInstruction = SINGLE_STEP;
+		}
 		if ( ( RSP_GPR[RSPOpC.rt].W & SP_CLR_INTR_BREAK ) != 0) { *RSPInfo.SP_STATUS_REG &= ~SP_STATUS_INTR_BREAK; }
 		if ( ( RSP_GPR[RSPOpC.rt].W & SP_SET_INTR_BREAK ) != 0) { *RSPInfo.SP_STATUS_REG |= SP_STATUS_INTR_BREAK;  }
 		if ( ( RSP_GPR[RSPOpC.rt].W & SP_CLR_SIG0 ) != 0) { *RSPInfo.SP_STATUS_REG &= ~SP_STATUS_SIG0; }