diff --git a/emul.exe.stackdump b/emul.exe.stackdump
new file mode 100644
index 0000000..605ba5d
--- /dev/null
+++ b/emul.exe.stackdump
@@ -0,0 +1,23 @@
+Exception: STATUS_ACCESS_VIOLATION at rip=001801A4281
+rax=0000000184429320 rbx=8080808080808080 rcx=FEFEFEFF0F000003
+rdx=00000000FFFFC981 rsi=FEFEFEFEFEFEFEFF rdi=00000000FFFFCDF0
+r8 =0000000184429321 r9 =000000000000004C r10=FEFEFEFEFF0F0000
+r11=FEFEFEFEFF4F4E4E r12=0000000000000000 r13=0000000000000000
+r14=0000000000000000 r15=0000000000000000
+rbp=00000000FFFFC900 rsp=00000000FFFFC8C8
+program=C:\cygwin64\home\takayun\dev\emul\emul.exe, pid 3840, thread main
+cs=0033 ds=002B es=002B fs=0053 gs=002B ss=002B
+Stack trace:
+Frame        Function    Args
+000FFFFC900  001801A4281 (003FECFD45B, 000FFFFC930, 00100402720, 000FFFFC930)
+000FFFFC900  00100402CEB (00000000016, 00000000008, 00000000004, 000FFFFCA10)
+000FFFFC930  00100401E57 (00000000016, 000FFFFCAB0, 00000000001, 00180347688)
+000FFFFCA10  00100402020 (0000000003A, 0010042904C, 00000000000, 00600038550)
+000FFFFCB10  0010040211C (00000000016, 00100409AAC, 00000000000, 00100000040)
+000FFFFCB50  00100402484 (00000000015, 00100429041, 00000000000, 4C204C4542414C3A)
+000FFFFCBD0  00100403220 (00000000039, 00000000000, 2F656D6F682F3D5F, 00000000000)
+000FFFFCC10  0010040118B (000FFFFCC60, 300010F0100FF00, 00180047B61, 000FFFFD680)
+000FFFFCCC0  00180047BD2 (00000000000, 00000000000, 00000000000, 00000000000)
+00000000000  0018004591C (00000000000, 00000000000, 00000000000, 00000000000)
+000FFFFFFF0  001800459B4 (00000000000, 00000000000, 00000000000, 00000000000)
+End of stack trace
diff --git a/emul_inst_exec.c b/emul_inst_exec.c
index 79312bf..2f2d103 100644
--- a/emul_inst_exec.c
+++ b/emul_inst_exec.c
@@ -473,12 +473,12 @@
 	    break;
 	case LW  :
         temp_op[0] = emul_inst_dec_get_next_operand();
-        temp_op[1] = emul_inst_dec_get_next_operand();
+        temp_op[1] = emul_inst_dec_get_next_immediate();
         emul_inst_exec_lw(temp_op[0], temp_op[1]);
 	    break;
 	case SW  :
         temp_op[0] = emul_inst_dec_get_next_operand();
-        temp_op[1] = emul_inst_dec_get_next_operand();
+        temp_op[1] = emul_inst_dec_get_next_immediate();
         emul_inst_exec_sw(temp_op[0], temp_op[1]);
 	    break;
 	//case MOVE:
diff --git a/test_asm/char_output.asm b/test_asm/char_output.asm
new file mode 100644
index 0000000..b599388
--- /dev/null
+++ b/test_asm/char_output.asm
@@ -0,0 +1,11 @@
+addi $s1 $zero 65
+addi $s2 $zero 90
+
+:CRLF
+:LABEL LOOP
+addi $s1 $s1 1
+:OUTPUT $s1
+
+bne $s2 $s1 LOOP
+:INPUT $t0
+:EXIT
diff --git a/test_asm/input_loop.asm b/test_asm/input_loop.asm
index 3060370..b6e8a83 100644
--- a/test_asm/input_loop.asm
+++ b/test_asm/input_loop.asm
@@ -1,7 +1,7 @@
 :DUMP DEBUG0
 :RUN
 
-addi  $s0 $zero 33
+addi  $s0 $zero 27
 
 :LABEL LOOP
 :INPUT $s1