diff --git a/System/sv_int_pend_flag.c b/System/sv_int_pend_flag.c
deleted file mode 100644
index 061cdff2..00000000
--- a/System/sv_int_pend_flag.c
+++ /dev/null
@@ -1,175 +0,0 @@
-/**************************************************************************//**
- * @item     CosyOS-II Kernel
- * @file     sv_int_pend_flag.c
- * @brief    中断挂起服务_FLAG
- * @details  仅在 pendsv_hook 中调用并执行。
- * @author   迟凯峰
- * @version  V3.4.0
- * @date     2025.01.06
- ******************************************************************************/
-
-#include "os_link.h"
-#if SYSCFG_PENDSVHOOK == __ENABLED__
-
-/**
- @addtogroup CosyOS_内核服务
- @{
- *//**
- \defgroup   中断挂起服务_FLAG
- \brief      当需要在中断中完成特定的服务功能时，可先设置一个标志位，再触发 PendSV；
-             而后在 pendsv_hook 中查询该标志位，为真就清除标志位，而后调用服务。
- @{
- */
-
-/**
- \brief      清除就绪延时
- \param      无
- \return     无
- */
-void sp_clear_delay(void) MCUCFG_C51USING
-{
-	if(s_sign_ready_delay){
-		s_sign_ready_delay = false;
-		s_task_current->timer = 0;
-	}
-}
-
-/**
- \brief      切换任务
- \param[in]  htask     任务句柄
- \return     无
- */
-void sp_switch_task(s_tasknode_tsp htask) MCUCFG_C51USING
-{
-	if(htask == OS_NULL) return;
-	if(htask->status < OS_STATUS_STOPPED){
-		s_switch_taskpri(htask);
-	}
-}
-
-/**
- \brief      恢复任务
- \param[in]  htask     任务句柄
- \return     无
- */
-void sp_resume_task(s_tasknode_tsp htask) MCUCFG_C51USING
-{
-	if(htask == OS_NULL) return;
-	if(htask->status & OS_STATUS_SUSPENDED){
-		htask->status &= (~OS_STATUS_SUSPENDED & 0xFF);
-		#if SYSCFG_SAMEPRISCHEDULE == __TIMESHARING__
-		htask->tc_counter = 0;
-		#endif
-		s_switch_ready(htask);
-	}
-}
-
-/**
- \brief      挂起任务
- \param[in]  htask     任务句柄
- \return     无
- */
-void sp_suspend_task(s_tasknode_tsp htask) MCUCFG_C51USING
-{
-	if(htask == OS_NULL) return;
-	if(htask->status < OS_STATUS_SUSPENDED){
-		htask->status |= OS_STATUS_SUSPENDED;
-		if(htask == s_task_current){
-			s_sign_schedule = true;
-		}
-	}
-}
-
-/**
- \brief      删除任务
- \param[in]  htask     任务句柄
- \return     无
- */
-void sp_delete_task(s_tasknode_tsp htask) MCUCFG_C51USING
-{
-	if(htask == OS_NULL) return;
-	if(htask->status < OS_STATUS_DELETED){
-		htask->status = OS_STATUS_DELETED;
-		if(htask == s_task_current){
-			s_sign_schedule = true;
-		}
-	}
-}
-
-/**
- \brief      设置任务优先级
- \param[in]  htask     任务句柄
- \param[in]  npri      新优先级
- \return     无
- */
-void sp_set_taskpri(s_tasknode_tsp htask, s_u8_t npri) MCUCFG_C51USING
-{
-	if(htask == OS_NULL) return;
-	if(htask->status < OS_STATUS_STOPPED){
-		if(htask->pri != npri){
-			s_set_taskpri(htask, npri);
-			s_sign_schedule = true;
-		}
-	}
-}
-
-/**
- \brief      设置阻塞（时间）
- \param[in]  htask     任务句柄
- \param[in]  tick      阻塞时间 [单位：滴答周期，0：等效于清除阻塞，~0：无限阻塞]
- \return     无
- */
-void sp_set_block(s_tasknode_tsp htask, s_delay_t tick) MCUCFG_C51USING
-{
-	if(htask == OS_NULL) return;
-	if(htask->status == OS_STATUS_BLOCKED){
-		if(!tick){
-			htask->status = OS_STATUS_READY;
-			htask->timer = 0;
-			#if SYSCFG_SAMEPRISCHEDULE == __TIMESHARING__
-			htask->tc_counter = 0;
-			#endif
-			s_switch_taskpri(htask);
-		}
-		else{
-			htask->timer = tick;
-		}
-	}
-}
-
-/**
- \brief      清除阻塞（状态）
- \param[in]  htask     任务句柄
- \return     无
- */
-void sp_clear_block(s_tasknode_tsp htask) MCUCFG_C51USING
-{
-	if(htask == OS_NULL) return;
-	if(htask->status == OS_STATUS_BLOCKED){
-		htask->status = OS_STATUS_READY;
-		htask->timer = 0;
-		#if SYSCFG_SAMEPRISCHEDULE == __TIMESHARING__
-		htask->tc_counter = 0;
-		#endif
-		s_switch_taskpri(htask);
-	}
-}
-
-#if SYSCFG_BINARY == __ENABLED__
-/**
- \brief      上锁or给予二值信号量
- \param[in]  hbin      二值信号量句柄
- \param[in]  val       0：上锁，1：给予
- \return     无
- */
-void sp_write_binary(s_binary_tsp hbin, bool val) MCUCFG_C51USING
-{
-	hbin->binary = val;
-	if(!val) return;
-	s_switch_notnull(hbin->htask);
-}
-#endif
-
-/** @} */
-/** @} */
-#endif