diff --git a/bsp/ls2kdev/.config b/bsp/ls2kdev/.config
index 20cf03b62502fed0a5882cb9cd1f6ab6d5d97cba..d8a97b46b066727a089b78e5f0ce7a2428ab4e1f 100644
--- a/bsp/ls2kdev/.config
+++ b/bsp/ls2kdev/.config
@@ -20,13 +20,10 @@ CONFIG_RT_USING_HOOK=y
 CONFIG_RT_USING_IDLE_HOOK=y
 CONFIG_RT_IDLE_HOOK_LIST_SIZE=4
 CONFIG_IDLE_THREAD_STACK_SIZE=2048
-CONFIG_RT_USING_TIMER_SOFT=y
-CONFIG_RT_TIMER_THREAD_PRIO=20
-CONFIG_RT_TIMER_THREAD_STACK_SIZE=2048
+# CONFIG_RT_USING_TIMER_SOFT is not set
 CONFIG_RT_DEBUG=y
 # CONFIG_RT_DEBUG_COLOR is not set
-CONFIG_RT_DEBUG_INIT_CONFIG=y
-CONFIG_RT_DEBUG_INIT=1
+# CONFIG_RT_DEBUG_INIT_CONFIG is not set
 # CONFIG_RT_DEBUG_THREAD_CONFIG is not set
 # CONFIG_RT_DEBUG_SCHEDULER_CONFIG is not set
 # CONFIG_RT_DEBUG_IPC_CONFIG is not set
@@ -65,7 +62,7 @@ CONFIG_RT_USING_DEVICE=y
 # CONFIG_RT_USING_DEVICE_OPS is not set
 # CONFIG_RT_USING_INTERRUPT_INFO is not set
 CONFIG_RT_USING_CONSOLE=y
-CONFIG_RT_CONSOLEBUF_SIZE=128
+CONFIG_RT_CONSOLEBUF_SIZE=256
 CONFIG_RT_CONSOLE_DEVICE_NAME="uart"
 CONFIG_RT_VER_NUM=0x40003
 # CONFIG_RT_USING_CPU_FFS is not set
diff --git a/bsp/ls2kdev/applications/main.c b/bsp/ls2kdev/applications/main.c
index 54691f0f897e14c7c9ae4f8a8912a6f9f3647d70..bd975f4825bcf2b3ba2b031084f69992996a21bd 100644
--- a/bsp/ls2kdev/applications/main.c
+++ b/bsp/ls2kdev/applications/main.c
@@ -12,6 +12,6 @@
 
 int main(int argc, char** argv)
 {   
-    rt_kprintf("ls2k1000:hello rtthread!\n");
+    rt_kprintf("Hi, this is RT-Thread!!\n");
     return 0;
 }
diff --git a/bsp/ls2kdev/rtconfig.h b/bsp/ls2kdev/rtconfig.h
index 80f068c5c0423b49afdae1bf0ec19194070b122f..aaeed71df54251a8f8601745e04d16c5f11621c9 100644
--- a/bsp/ls2kdev/rtconfig.h
+++ b/bsp/ls2kdev/rtconfig.h
@@ -16,12 +16,7 @@
 #define RT_USING_IDLE_HOOK
 #define RT_IDLE_HOOK_LIST_SIZE 4
 #define IDLE_THREAD_STACK_SIZE 2048
-#define RT_USING_TIMER_SOFT
-#define RT_TIMER_THREAD_PRIO 20
-#define RT_TIMER_THREAD_STACK_SIZE 2048
 #define RT_DEBUG
-#define RT_DEBUG_INIT_CONFIG
-#define RT_DEBUG_INIT 1
 
 /* Inter-Thread communication */
 
@@ -41,7 +36,7 @@
 
 #define RT_USING_DEVICE
 #define RT_USING_CONSOLE
-#define RT_CONSOLEBUF_SIZE 128
+#define RT_CONSOLEBUF_SIZE 256
 #define RT_CONSOLE_DEVICE_NAME "uart"
 #define RT_VER_NUM 0x40003
 #define ARCH_MIPS64
diff --git a/libcpu/mips/common/exception.c b/libcpu/mips/common/exception.c
index 11192955cf4019665d39a7706470bf4340d44101..cd7d97e6c0d3e047a5560229be9bdc86301ca6de 100644
--- a/libcpu/mips/common/exception.c
+++ b/libcpu/mips/common/exception.c
@@ -117,14 +117,14 @@ int rt_hw_exception_init(void)
 
 void rt_general_exc_dispatch(struct pt_regs *regs)
 {
-    rt_ubase_t cause, exccode;
+    rt_ubase_t exccode = 0;
 
-    exccode = (cause & CAUSEF_EXCCODE) >> CAUSEB_EXCCODE;
 
     if (exccode == 0) {
         rt_ubase_t status, pending;
         status = read_c0_status();
-        pending = (cause & CAUSEF_IP) & (status & ST0_IM);
+
+        pending =  (CAUSEF_IP) & (status & ST0_IM);
         if (pending & CAUSEF_IP0)
             rt_do_mips_cpu_irq(0);
         if (pending & CAUSEF_IP1)
diff --git a/libcpu/mips/common/stackframe.h b/libcpu/mips/common/stackframe.h
index b5a038d1f657f34bcc1bcec015ec18ae70e0b0a5..258f9a994fe7255270a41b935e70909e3d8e717c 100644
--- a/libcpu/mips/common/stackframe.h
+++ b/libcpu/mips/common/stackframe.h
@@ -60,11 +60,11 @@
     mfhi	v1
     LONG_S	$8, PT_R8(sp)
     LONG_S	$9, PT_R9(sp)
-    LONG_S	v1, PT_HI(sp)
+    sw	v1, PT_HI(sp)
     mflo	v1
     LONG_S	$10, PT_R10(sp)
     LONG_S	$11, PT_R11(sp)
-    LONG_S	v1,  PT_LO(sp)
+    sw	v1,  PT_LO(sp)
     LONG_S	$12, PT_R12(sp)
     LONG_S	$13, PT_R13(sp)
     LONG_S	$14, PT_R14(sp)