diff --git a/src/asm/Makefile b/src/asm/Makefile
index 7e0956d..c3fdfa5 100644
--- a/src/asm/Makefile
+++ b/src/asm/Makefile
@@ -10,7 +10,7 @@ OBJCOPY=mips-elf-objcopy
 OBJDUMP=mips-elf-objdump
 ROMGEN=romgen
 
-CFLAGS := -march=$(TARGET) -L. -T link/link.ld -Wl,--gc-sections -G 0
+CFLAGS := -march=$(TARGET) -L. -T link/link.ld -Wl,--gc-sections -G 0 -O0
 CFLAGS += -fno-exceptions -ffunction-sections -fdata-sections -fstrict-volatile-bitfields -nostartfiles
 LIBS := -lsys -lc
 
diff --git a/src/asm/testbench.c b/src/asm/testbench.c
index 6c2bf93..9fa4cdb 100644
--- a/src/asm/testbench.c
+++ b/src/asm/testbench.c
@@ -1,6 +1,5 @@
 #include <stdio.h>
 #include <stdlib.h>
-#include <time.h>
 #include "libsys/utils.h"
 
 #define	NO_ERROR		0x00000000
@@ -82,10 +81,9 @@ void PrintCPUinfo(void)
 
 int Test10_LoadStore()
 {
-	int *buf, i, result, data, err;
+	int buf[32*sizeof(int)], i, result, data, err;
 	volatile int *pPtr;
 
-	buf = (int*)malloc(32*sizeof(int));
 	while(1)
 	{
 		err = TEST10_ERROR;
@@ -197,7 +195,7 @@ int Test10_LoadStore()
 		err = NO_ERROR;
 		break;
 	}
-	free(buf);
+
 	return err;
 
 }
@@ -269,18 +267,10 @@ int Test12_MulDiv()
 int main (void)
 {
 	int result, i, j, cnt;
-	volatile char *pUART_baud = (char*)0x80000009;
 	volatile int *pReg = (int*)0x80000000;
-	volatile int *pReg_usec = (int*)0x80000010;
-	volatile int *pReg_sec = (int*)0x80000014;
-	time_t clock;
-	struct tm *pDate;
-//	*pUART_baud = 0x35/4;
-
 	PrintCPUinfo();
 
 	cnt = 0;
-//	*pReg_sec = 0x12345678;
 	while (1)
 	{
 		*pReg = cnt & 0x3FFFFFFF;
@@ -302,14 +292,6 @@ int main (void)
 		print_word(cnt++);
 		sputs(": Passed\r\n");
 
-		clock = time(NULL);
-		pDate = gmtime(&clock);
-		print_byte(pDate->tm_hour);
-		sputs(":");
-		print_byte(pDate->tm_min);
-		sputs(":");
-		print_byte(pDate->tm_sec);
-		sputs("\r\n");
 	}
 	*pReg = 0x40000000 | cnt;
 	sputs("Failed with error ");