diff --git a/MakefileInst b/MakefileInst
index 0e82e6f..7ca1754 100644
--- a/MakefileInst
+++ b/MakefileInst
@@ -1,4 +1,4 @@
-OBJS=emul_inst_exec.o emul_inst_decipher.o
+OBJS=emul_inst_exec.o emul_inst_decipher.o emul_reg.o emul_mem.o
 CC=gcc
 PROGRAM=emulexec
 
diff --git a/emul_inst_decipher.c b/emul_inst_decipher.c
index c9745a4..166c873 100644
--- a/emul_inst_decipher.c
+++ b/emul_inst_decipher.c
@@ -1,5 +1,7 @@
 #include "emul_inst_decipher.h"
+#include <string.h>
 #include <stdio.h>
+#include <stdlib.h>
 #include <ctype.h>
 
 /*
@@ -118,9 +120,9 @@
 int emul_inst_dec_get_opecode(char *op) {
     int i;
     for (i = 0; i < ISA_COUNT; i++) {
-	if ( strcmp(isa_dict[i].string, op) == 0 ) {
-	    return isa_dict[i].opecode;
-	}
+        if ( strcmp(isa_dict[i].string, op) == 0 ) {
+            return isa_dict[i].opecode;
+        }
     }
     return OPECODE_DECODE_ERROR;
 }
@@ -152,3 +154,10 @@
     emul_inst_dec_get_token(token);
     return emul_inst_dec_get_operand(token);
 }
+
+// immediate
+int emul_inst_dec_get_next_immediate() {
+    char token[LOAD_TOKEN_MAX];
+    emul_inst_dec_get_token(token);
+    return atoi(token);
+}
diff --git a/emul_inst_decipher.h b/emul_inst_decipher.h
index b09568b..fd57f8c 100644
--- a/emul_inst_decipher.h
+++ b/emul_inst_decipher.h
@@ -41,4 +41,7 @@
 
 int emul_inst_dec_get_next_operand();
 
+// immediate
+int emul_inst_dec_get_next_immediate();
+
 #endif
diff --git a/emul_inst_decipher.o b/emul_inst_decipher.o
new file mode 100644
index 0000000..e80d65e
--- /dev/null
+++ b/emul_inst_decipher.o
Binary files differ
diff --git a/emul_inst_exec.c b/emul_inst_exec.c
index c055ea0..28a71f9 100644
--- a/emul_inst_exec.c
+++ b/emul_inst_exec.c
@@ -15,10 +15,85 @@
     printf("Execute: add r0[%d], r1[%d], r2[%d];\n", r0, r1, r2);
 }
 
+void emul_inst_exec_addi(int r0, int r1, int im) {
+    emul_reg_set(r0, emul_reg_get(r1) + im);
+    printf("Execute: addi r0[%d], r1[%d], im[%d];\n", r0, r1, im);
+}
+
 void emul_inst_exec_sub(int r0, int r1, int r2) {
     emul_reg_set(r0, emul_reg_get(r1) - emul_reg_get(r2));
     printf("Execute: sub r0[%d], r1[%d], r2[%d];\n", r0, r1, r2);
 }
+
+void emul_inst_exec_slt(int r0, int r1, int r2) {
+    if (emul_reg_get(r1) < emul_reg_get(r2)) emul_reg_set(r0, 1);
+    else emul_reg_set(r0, 0);
+    printf("Execute: slt r0[%d], r1[%d], r2[%d];\n", r0, r1, r2);
+}
+
+void emul_inst_exec_slti(int r0, int r1, int im) {
+    if (emul_reg_get(r1) < im) emul_reg_set(r0, 1);
+    else emul_reg_set(r0, 0);
+    printf("Execute: slti r0[%d], r1[%d], im[%d];\n", r0, r1, im);
+}
+
+void emul_inst_exec_seq(int r0, int r1, int r2) {
+    if (emul_reg_get(r1) == emul_reg_get(r2)) emul_reg_set(r0, 1);
+    else emul_reg_set(r0, 0);
+    printf("Execute: seq r0[%d], r1[%d], r2[%d];\n", r0, r1, r2);
+}
+
+void emul_inst_exec_sge(int r0, int r1, int r2) {
+    if (emul_reg_get(r1) >= emul_reg_get(r2)) emul_reg_set(r0, 1);
+    else emul_reg_set(r0, 0);
+    printf("Execute: sge r0[%d], r1[%d], r2[%d];\n", r0, r1, r2);
+}
+
+void emul_inst_exec_sgt(int r0, int r1, int r2) {
+    if (emul_reg_get(r1) >= emul_reg_get(r2)) emul_reg_set(r0, 1);
+    else emul_reg_set(r0, 0);
+    printf("Execute: sgt r0[%d], r1[%d], r2[%d];\n", r0, r1, r2);
+}
+
+void emul_inst_exec_sle(int r0, int r1, int r2) {
+    if (emul_reg_get(r1) <= emul_reg_get(r2)) emul_reg_set(r0, 1);
+    else emul_reg_set(r0, 0);
+    printf("Execute: sle r0[%d], r1[%d], r2[%d];\n", r0, r1, r2);
+}
+
+void emul_inst_exec_sne(int r0, int r1, int r2) {
+    if (emul_reg_get(r1) != emul_reg_get(r2)) emul_reg_set(r0, 1);
+    else emul_reg_set(r0, 0);
+    printf("Execute: sne r0[%d], r1[%d], r2[%d];\n", r0, r1, r2);
+}
+
+void emul_inst_exec_j(int target) {
+    emul_reg_set(Spc, target);
+    printf("Execute: j target[%d];\n", target);
+}
+
+void emul_inst_exec_beq(int r0, int r1, int label) {
+    if (emul_reg_get(r0) == emul_reg_get(r1))
+        emul_reg_set(Spc, label);
+    emul_reg_set(Spc, label);
+    printf("Execute: beq r0[%d] r1[%d] label[%d];\n", r0, r1, label);
+}
+
+void emul_inst_exec_bne(int r0, int r1, int label) {
+    if (emul_reg_get(r0) != emul_reg_get(r1))
+        emul_reg_set(Spc, label);
+    printf("Execute: bne r0[%d] r1[%d] label[%d];\n", r0, r1, label);
+}
+
+void emul_inst_exec_lw(int r0, int address) {
+    emul_reg_set(r0, emul_mem_get_word(address));
+    printf("Execute: lw r0[%d] address[%d];\n", r0, address);
+}
+
+void emul_inst_exec_sw(int r0, int address) {
+    emul_mem_set_word(address, emul_reg_get(r0));
+    printf("Execute: sw r0[%d] address[%d];\n", r0, address);
+}
 /* オペコード解読処理群 - END */
 
 /* Execute Step
@@ -51,8 +126,13 @@
 	        emul_inst_dec_get_next_operand()
 	    );
 	    break;
-	//case ADDI:
-	//    break;
+	case ADDI:
+	    emul_inst_exec_addi(
+	        emul_inst_dec_get_next_operand(),
+	        emul_inst_dec_get_next_operand(),
+	        emul_inst_dec_get_next_immediate()
+	    );
+	    break;
 	case SUB :
 	    emul_inst_exec_sub(
 	        emul_inst_dec_get_next_operand(),
@@ -60,34 +140,90 @@
 	        emul_inst_dec_get_next_operand()
 	    );
 	    break;
-	//case SLT :
-	//    break;
-	//case SLTI:
-	//    break;
-	//case SEQ :
-	//    break;
-        //case SGE :
-	//    break;
-        //case SGT :
-	//    break;
-        //case SLE :
-	//    break;
-        //case SNE :
-	//    break;
+	case SLT :
+        emul_inst_exec_slt(
+	        emul_inst_dec_get_next_operand(),
+	        emul_inst_dec_get_next_operand(),
+	        emul_inst_dec_get_next_operand()
+        );
+	    break;
+	case SLTI:
+        emul_inst_exec_slti(
+	        emul_inst_dec_get_next_operand(),
+	        emul_inst_dec_get_next_operand(),
+	        emul_inst_dec_get_next_immediate()
+        );
+	    break;
+	case SEQ :
+        emul_inst_exec_seq(
+	        emul_inst_dec_get_next_operand(),
+	        emul_inst_dec_get_next_operand(),
+	        emul_inst_dec_get_next_operand()
+        );
+	    break;
+    case SGE :
+        emul_inst_exec_sge(
+	        emul_inst_dec_get_next_operand(),
+	        emul_inst_dec_get_next_operand(),
+	        emul_inst_dec_get_next_operand()
+        );
+	    break;
+    case SGT :
+	    break;
+        emul_inst_exec_sgt(
+	        emul_inst_dec_get_next_operand(),
+	        emul_inst_dec_get_next_operand(),
+	        emul_inst_dec_get_next_operand()
+        );
+    case SLE :
+        emul_inst_exec_sle(
+	        emul_inst_dec_get_next_operand(),
+	        emul_inst_dec_get_next_operand(),
+	        emul_inst_dec_get_next_operand()
+        );
+	    break;
+    case SNE :
+        emul_inst_exec_sne(
+	        emul_inst_dec_get_next_operand(),
+	        emul_inst_dec_get_next_operand(),
+	        emul_inst_dec_get_next_operand()
+        );
+	    break;
 	//case B   :
 	//    break;
-	//case BEQ :
-	//    break;
-	//case BNE :
-	//    break;
-	//case J   :
-	//    break;
-	//case LW  :
-	//    break;
-	//case SW  :
-	//    break;
-	//case MOVE:
-	//    break;
+	case BEQ :
+        emul_inst_exec_beq(
+	        emul_inst_dec_get_next_operand(),
+	        emul_inst_dec_get_next_operand(),
+	        emul_inst_dec_get_next_immediate()
+        );
+	    break;
+	case BNE :
+        emul_inst_exec_bne(
+	        emul_inst_dec_get_next_operand(),
+	        emul_inst_dec_get_next_operand(),
+	        emul_inst_dec_get_next_immediate()
+        );
+	    break;
+	case J   :
+        emul_inst_exec_j(
+	        emul_inst_dec_get_next_immediate()
+        );
+	    break;
+	case LW  :
+        emul_inst_exec_lw(
+	        emul_inst_dec_get_next_operand(),
+	        emul_inst_dec_get_next_operand()
+        );
+	    break;
+	case SW  :
+        emul_inst_exec_sw(
+	        emul_inst_dec_get_next_operand(),
+	        emul_inst_dec_get_next_operand()
+        );
+	    break;
+	case MOVE:
+	    break;
 	default:
 	    printf("まだ実装してないので待って！\n");
     }
@@ -102,7 +238,8 @@
  *   failed  : 0 */
 int emul_inst_exec_run() {
     // step関数を終わるまで呼び出せばよい
-    return ;
+    while (emul_inst_exec_step());
+    return 0;
 }
 
 int main(void) {
diff --git a/emul_inst_exec.h b/emul_inst_exec.h
index c5ed8e9..1be33b2 100644
--- a/emul_inst_exec.h
+++ b/emul_inst_exec.h
@@ -3,6 +3,7 @@
 
 #include "emul_inst_decipher.h"
 #include "emul_reg.h"
+#include "emul_mem.h"
 
 int emul_inst_exec_loadfile(char*);
 void emul_inst_exec_closefile();
diff --git a/emul_inst_exec.o b/emul_inst_exec.o
new file mode 100644
index 0000000..6cced64
--- /dev/null
+++ b/emul_inst_exec.o
Binary files differ
diff --git a/emul_mem.c b/emul_mem.c
index ed3f33f..aa81831 100644
--- a/emul_mem.c
+++ b/emul_mem.c
@@ -2,3 +2,18 @@
 
 char mem[EMUL_MEMSIZE];
 
+int emul_mem_get_word(int address) {
+    int word = 0;
+    word |= mem[address+0] << 0;
+    word |= mem[address+1] << 8;
+    word |= mem[address+2] << 16;
+    word |= mem[address+3] << 24;
+    return word;
+}
+
+void emul_mem_set_word(int address, int word) {
+    mem[address+0] = (char)((word >> 0 ) & 0x000F);
+    mem[address+1] = (char)((word >> 8 ) & 0x000F);
+    mem[address+2] = (char)((word >> 16) & 0x000F);
+    mem[address+3] = (char)((word >> 24) & 0x000F);
+}
diff --git a/emul_mem.h b/emul_mem.h
index 5e34d52..4682844 100644
--- a/emul_mem.h
+++ b/emul_mem.h
@@ -5,4 +5,8 @@
 
 void add();
 
+int emul_mem_get_word(int address);
+
+void emul_mem_set_word(int address, int word);
+
 #endif
diff --git a/emul_mem.o b/emul_mem.o
new file mode 100644
index 0000000..d029216
--- /dev/null
+++ b/emul_mem.o
Binary files differ
diff --git a/emul_reg.c b/emul_reg.c
index 8565c22..53e74fb 100644
--- a/emul_reg.c
+++ b/emul_reg.c
@@ -6,10 +6,10 @@
     reg[Szero] = 0;
 }
 
-int emul_reg_get(int r) {
+int emul_reg_get(EMUL_REG r) {
     return reg[r];
 }
 
-void emul_reg_set(int r, int value) {
+void emul_reg_set(EMUL_REG r, int value) {
     reg[r] = value;
 }
diff --git a/emul_reg.h b/emul_reg.h
index 28d9094..a671f7b 100644
--- a/emul_reg.h
+++ b/emul_reg.h
@@ -44,7 +44,9 @@
 
     Sfp,      // frame
 
-    Sra      // return address
+    Sra,      // return address
+
+    Spc       // program counter
 } EMUL_REG;
 
 
@@ -52,7 +54,7 @@
  * this must be called */
 void emul_reg_init();
 
-int emul_reg_get(int r);
-void emul_reg_set(int r, int value);
+int emul_reg_get(EMUL_REG r);
+void emul_reg_set(EMUL_REG r, int value);
 
 #endif
diff --git a/emul_reg.o b/emul_reg.o
new file mode 100644
index 0000000..9c2157d
--- /dev/null
+++ b/emul_reg.o
Binary files differ
diff --git a/emulexec.exe b/emulexec.exe
new file mode 100644
index 0000000..e3c8cec
--- /dev/null
+++ b/emulexec.exe
Binary files differ