diff --git a/src/main/java/mipsim/Processor.java b/src/main/java/mipsim/Processor.java
index 68ce2bc..bfb7a56 100644
--- a/src/main/java/mipsim/Processor.java
+++ b/src/main/java/mipsim/Processor.java
@@ -112,15 +112,22 @@ public void eval(final long time) {
 
 	@Override
 	public void writeDebug(@NotNull StringBuffer buffer) {
-		final var pc = BusKt.toInt(this.wbif.pc);
-		final var instBin = BusKt.toInt(instructionMemory.instruction);
-		final var instStr = ParserKt.parseBinToInstruction(instBin);
-
-		buffer.append(String.format("pc pipe: %04xH\t", pc));
-		buffer.append(String.format("pc inst: %04xH\t", BusKt.toInt(instructionMemory.pc)));
-		buffer.append(String.format("pc ifid: %04xH\n", BusKt.toInt(ifid.pc)));
-		buffer.append(String.format("inst read: %08xH = ' %s '\t", instBin, instStr));
-		buffer.append(String.format("inst ifid: %08xH\n", BusKt.toInt(ifid.instruction)));
+		{
+			final var pc = BusKt.toInt(this.wbif.pc);
+			buffer.append(String.format("pc in if: %04xH\n", pc));
+		}
+
+		{
+			final var instBin = BusKt.toInt(instructionMemory.instruction);
+			final var instStr = ParserKt.parseBinToInstruction(instBin);
+			buffer.append(String.format("inst in mem: %08xH = ' %s '\n", instBin, instStr));
+		}
+		{
+			final var instBin = BusKt.toInt(ifid.instruction);
+			final var instStr = ParserKt.parseBinToInstruction(instBin);
+			buffer.append(String.format("inst in ifid: %08xH = ' %s '\n", instBin, instStr));
+		}
+
 		DebugKt.writeTo(registerFile, buffer);
 	}
 
diff --git a/src/main/java/mipsim/console/Main.java b/src/main/java/mipsim/console/Main.java
index 4a33d06..ea6b769 100644
--- a/src/main/java/mipsim/console/Main.java
+++ b/src/main/java/mipsim/console/Main.java
@@ -87,14 +87,14 @@ public static void runProgram() {
 
 	public static int find_DebugLevel() {
 		System.out.println("--- Debug Levels ---");
-		System.out.println("1. Easy   : ");
-		System.out.println("2. medium : ");
-		System.out.println("3. advance: ");
+		System.out.print("1. Easy\t");
+		System.out.print("2. medium\t");
+		System.out.println("3. advance");
 		return Console.askInteger("please choice Debug level:", 0);
 	}
 
 	public static boolean find_stepShow() {
-		return Console.askYesNo("Do you like to see step by step of code that you Run in Cpu ?", false);
+		return Console.askYesNo("Do you like to see step by step of code that you Run in Cpu ?", true);
 	}
 
 	public static boolean find_heWantToSaveInMemory() {
diff --git a/src/main/java/mipsim/sim/Simulator.java b/src/main/java/mipsim/sim/Simulator.java
index 1c13c94..ab7273c 100644
--- a/src/main/java/mipsim/sim/Simulator.java
+++ b/src/main/java/mipsim/sim/Simulator.java
@@ -3,7 +3,6 @@
 import mipsim.Processor;
 import mipsim.console.Console;
 import sim.base.BusKt;
-import sim.tool.DebugKt;
 
 import java.io.File;
 import java.util.Arrays;
@@ -43,8 +42,7 @@ public void loadInstructions(final File instructionsFile) {
 	}
 
 	public void run(int debugLevel, boolean stepByStep) {
-		DebugKt.println(processor.instructionMemory);
-		testOn(processor.dataMemory, "dataMemory");
+		testOn(processor.dataMemory, "dataMemory - before run");
 
 		for (var i = 0; i < 100; i++) {
 			if (runStep(i, debugLevel)) break;
@@ -52,7 +50,8 @@ public void run(int debugLevel, boolean stepByStep) {
 			if (stepByStep && !Console.askYesNo("Do tou want to continue?", true)) break;
 		}
 
-		testOn(processor.dataMemory, "dataMemory");
+		testOn(processor.registerFile, "registerFile - after run");
+		testOn(processor.dataMemory, "dataMemory - after run");
 	}
 
 	boolean runStep(int step, int debugLevel) {
diff --git a/src/main/kotlin/mipsim/units/RegisterFileUnit.kt b/src/main/kotlin/mipsim/units/RegisterFileUnit.kt
index 6b1d5cc..c27d1fc 100644
--- a/src/main/kotlin/mipsim/units/RegisterFileUnit.kt
+++ b/src/main/kotlin/mipsim/units/RegisterFileUnit.kt
@@ -39,18 +39,19 @@ class RegisterFileUnit(clock: Value) : Eval, DebugWriter {
 		val values = _memory.bulkRead(32)
 		for (i in 0..31) {
 			val value: Int = values[i]
-			buffer.append(String.format("$%d=%04xH ", i, value))
+			buffer.append(String.format("$%-2d=%08xH   ", i, value))
+			if (i % 8 == 7) buffer.appendln()
 		}
-		buffer.append("\n")
-		buffer.append("ReadReg1: ").append(readReg1.toInt()).append("\t")
-		buffer.append("ReadReg2: ").append(readReg2.toInt()).append("\t")
-		buffer.append("WriteReg: ").append(writeReg.toInt()).append("\n")
-		buffer.append("RegWrite: ").append(regWrite).append("\t")
-		buffer.append("ReadData1: ").append(readData1.toInt()).append("\t")
-		buffer.append("ReadData2: ").append(readData2.toInt()).append("\t")
-		buffer.append("WriteData: ").append(writeData.toInt())
-	}
+		buffer.append(String.format("WriteReg: %02d\t", writeReg.toInt()))
+		buffer.append(String.format("WriteData: %d\t", writeData.toInt()))
+		buffer.append(String.format("RegWrite: %d\n", regWrite.toInt()))
+
+		buffer.append(String.format("ReadReg1: %02d\t", readReg1.toInt()))
+		buffer.append(String.format("ReadData1: %d\n", readData1.toInt()))
 
+		buffer.append(String.format("ReadReg2: %02d\t", readReg2.toInt()))
+		buffer.append(String.format("ReadData2: %d\n", readData2.toInt()))
+	}
 }
 
 internal fun main1() {