diff --git a/10_day/Makefile b/10_day/Makefile
index 8fa0b87..7546fc3 100644
--- a/10_day/Makefile
+++ b/10_day/Makefile
@@ -1,5 +1,5 @@
 OBJS_BOOTPACK = bootpack.obj naskfunc.obj hankaku.obj graphic.obj dsctbl.obj \
-		int.obj fifo.obj keyboard.obj mouse.obj
+		int.obj fifo.obj keyboard.obj mouse.obj memory.obj
 
 TOOLPATH = ../z_tools/
 INCPATH  = ../z_tools/haribote/
diff --git a/10_day/bootpack.c b/10_day/bootpack.c
index 7204cee..4f13ff3 100644
--- a/10_day/bootpack.c
+++ b/10_day/bootpack.c
@@ -3,24 +3,6 @@
 #include "bootpack.h"
 #include <stdio.h>
 
-#define MEMMAN_FREES 4090 /* 大约是32KB*/
-
-struct FREEINFO { /* 可用信息 */
-	unsigned int addr, size;
-};
-struct MEMMAN { /* 内存管理 */
-	int frees, maxfrees, lostsize, losts;
-	struct FREEINFO free[MEMMAN_FREES];
-};
-
-unsigned int memtest(unsigned int start, unsigned int end);
-void memman_init(struct MEMMAN *man);
-unsigned int memman_total(struct MEMMAN *man);
-unsigned int memman_alloc(struct MEMMAN *man, unsigned int size);
-int memman_free(struct MEMMAN *man, unsigned int addr, unsigned int size);
-
-#define MEMMAN_ADDR 0x003c0000
-
 void HariMain(void)
 {
 	struct BOOTINFO *binfo = (struct BOOTINFO *) ADR_BOOTINFO;
@@ -111,146 +93,4 @@ void HariMain(void)
 			}
 		}
 	}
-}
-
-#define EFLAGS_AC_BIT			0x00040000
-#define CR0_CACHE_DISABLE	0x60000000
-
-unsigned int memtest(unsigned int start, unsigned int end) 
-{
-	char flg486 = 0;
-	unsigned int eflg, cr0, i;
-
-	/* 确认CPU是386还是486以上的 */
-	eflg = io_load_eflags();
-	eflg |= EFLAGS_AC_BIT; /* AC-bit = 1 */
-	io_store_eflags(eflg);
-	eflg = io_load_eflags();
-	if ((eflg & EFLAGS_AC_BIT) != 0) {
-		/* 如果是386，即使设定AC=1，AC的值还会自动回到0 */
-		flg486 = 1;
-	}
-
-	eflg &= ~EFLAGS_AC_BIT; /* AC-bit = 0 */
-	io_store_eflags(eflg);
-
-	if (flg486 != 0) {
-		cr0 = load_cr0();
-		cr0 |= CR0_CACHE_DISABLE; /* 禁止缓存 */ 
-		store_cr0(cr0);
-	}
-
-	i = memtest_sub(start, end);
-
-	if (flg486 != 0) {
-		cr0 = load_cr0();
-		cr0 &= ~CR0_CACHE_DISABLE; /* 允许缓存 */
-		store_cr0(cr0);
-	}
-
-	return i;
-}
-
-void memman_init(struct MEMMAN *man){
-	man->frees = 0;    /* 可用信息数目 */
-	man->maxfrees = 0; /* 用于观察可用状况：frees的最大值 */
-	man->lostsize = 0; /* 释放失败的内存的大小总和 */
-	man->losts = 0;    /* 释放失败次数 */
-	return;
-}
-
-unsigned int memman_total(struct MEMMAN *man)
-/* 报告空余内存大小的合计 */
-{
-	unsigned int i, t = 0;
-	for (i = 0; i < man->frees; i++) {
-		t += man->free[i].size;
-	}
-	return t;
-}
-
-unsigned int memman_alloc(struct MEMMAN *man, unsigned int size)
-/* 分配 */
-{
-	unsigned int i, a;
-	for (i = 0; i < man->frees; i++) {
-		if (man->free[i].size >= size) {
-			/* 找到了足够大的内存 */
-			a = man->free[i].addr;
-			man->free[i].addr += size;
-			man->free[i].size -= size;
-			if (man->free[i].size == 0) {
-				/* 如果free[i]变成了0，就减掉一条可用信息 */
-				man->frees--;
-				for (; i < man->frees; i++) {
-					man->free[i] = man->free[i + 1]; /* 代入结构体 */
-				}
-			}
-			return a;
-		}
-	}
-	return 0; /* 没有可用空间 */
-}
-
-int memman_free(struct MEMMAN *man, unsigned int addr, unsigned int size)
-/* 释放 */
-{
-	int i, j;
-	/* 为便于归纳内存，将free[]按照addr的顺序排列 */
-	/* 所以，先决定应该放在哪里 */
-	for (i = 0; i < man->frees; i++) {
-		if (man->free[i].addr > addr) {
-			break;
-		}
-	}
-	/* free[i - 1].addr < addr < free[i].addr */
-	if (i > 0) {
-		/* 前面有可用内存 */
-		if (man->free[i - 1].addr + man->free[i - 1].size == addr) {
-			/* 可以与前面的可用内存归纳到一起 */
-			man->free[i - 1].size += size;
-			if (i < man->frees) {
-				/* 后面也有 */
-				if (addr + size == man->free[i].addr) {
-					/* 也可以与后面的可用内存归纳到一起 */
-					man->free[i - 1].size += man->free[i].size;
-					/* man->free[i]删除 */
-					/* free[i]变成0后归纳到前面去 */
-					man->frees--;
-					for (; i < man->frees; i++) {
-						man->free[i] = man->free[i + 1]; /* 结构体赋值 */
-					}
-				}
-			}
-			return 0; /* 成功完成 */
-		}
-	}
-	/* 不能与前面的可用空间归纳到一起 */
-	if (i < man->frees) {
-		/* 后面还有 */
-		if (addr + size == man->free[i].addr) {
-			/* 可以与后面的内容归纳到一起 */
-			man->free[i].addr = addr;
-			man->free[i].size += size;
-			return 0; /* 成功完成 */
-		}
-	}
-	/* 既不能与前面归纳到一起，也不能与后面归纳到一起 */
-	if (man->frees < MEMMAN_FREES) {
-		/* free[i]之后的，向后移动，腾出一点可用空间 */
-		for (j = man->frees; j > i; j--) {
-			man->free[j] = man->free[j - 1];
-		}
-		man->frees++;
-		if (man->maxfrees < man->frees) {
-			man->maxfrees = man->frees; /* 更新最大值 */
-		}
-		man->free[i].addr = addr;
-		man->free[i].size = size;
-		return 0; /* 成功完成 */
-	}
-	/* 不能往后移动 */
-	man->losts++;
-	man->lostsize += size;
-	return -1; /* 失败 */
-}
+}
\ No newline at end of file
diff --git a/10_day/bootpack.h b/10_day/bootpack.h
index a143478..0e46fc2 100644
--- a/10_day/bootpack.h
+++ b/10_day/bootpack.h
@@ -116,3 +116,21 @@ void inthandler2c(int *esp);
 void enable_mouse(struct MOUSE_DEC *mdec);
 int mouse_decode(struct MOUSE_DEC *mdec, unsigned char dat);
 extern struct FIFO8 mousefifo;
+
+/* memory.c */
+#define MEMMAN_FREES 4090 /* 大约是32KB*/
+#define MEMMAN_ADDR 0x003c0000
+
+struct FREEINFO { /* 可用信息 */
+	unsigned int addr, size;
+};
+struct MEMMAN { /* 内存管理 */
+	int frees, maxfrees, lostsize, losts;
+	struct FREEINFO free[MEMMAN_FREES];
+};
+
+unsigned int memtest(unsigned int start, unsigned int end);
+void memman_init(struct MEMMAN *man);
+unsigned int memman_total(struct MEMMAN *man);
+unsigned int memman_alloc(struct MEMMAN *man, unsigned int size);
+int memman_free(struct MEMMAN *man, unsigned int addr, unsigned int size);
diff --git a/10_day/memory.c b/10_day/memory.c
new file mode 100644
index 0000000..c9f8cd8
--- /dev/null
+++ b/10_day/memory.c
@@ -0,0 +1,145 @@
+/* 内存管理 */
+
+#include "bootpack.h"
+
+#define EFLAGS_AC_BIT			0x00040000
+#define CR0_CACHE_DISABLE	0x60000000
+
+unsigned int memtest(unsigned int start, unsigned int end) 
+{
+	char flg486 = 0;
+	unsigned int eflg, cr0, i;
+
+	/* 确认CPU是386还是486以上的 */
+	eflg = io_load_eflags();
+	eflg |= EFLAGS_AC_BIT; /* AC-bit = 1 */
+	io_store_eflags(eflg);
+	eflg = io_load_eflags();
+	if ((eflg & EFLAGS_AC_BIT) != 0) {
+		/* 如果是386，即使设定AC=1，AC的值还会自动回到0 */
+		flg486 = 1;
+	}
+
+	eflg &= ~EFLAGS_AC_BIT; /* AC-bit = 0 */
+	io_store_eflags(eflg);
+
+	if (flg486 != 0) {
+		cr0 = load_cr0();
+		cr0 |= CR0_CACHE_DISABLE; /* 禁止缓存 */ 
+		store_cr0(cr0);
+	}
+
+	i = memtest_sub(start, end);
+
+	if (flg486 != 0) {
+		cr0 = load_cr0();
+		cr0 &= ~CR0_CACHE_DISABLE; /* 允许缓存 */
+		store_cr0(cr0);
+	}
+
+	return i;
+}
+
+void memman_init(struct MEMMAN *man){
+	man->frees = 0;    /* 可用信息数目 */
+	man->maxfrees = 0; /* 用于观察可用状况：frees的最大值 */
+	man->lostsize = 0; /* 释放失败的内存的大小总和 */
+	man->losts = 0;    /* 释放失败次数 */
+	return;
+}
+
+unsigned int memman_total(struct MEMMAN *man)
+/* 报告空余内存大小的合计 */
+{
+	unsigned int i, t = 0;
+	for (i = 0; i < man->frees; i++) {
+		t += man->free[i].size;
+	}
+	return t;
+}
+
+unsigned int memman_alloc(struct MEMMAN *man, unsigned int size)
+/* 分配 */
+{
+	unsigned int i, a;
+	for (i = 0; i < man->frees; i++) {
+		if (man->free[i].size >= size) {
+			/* 找到了足够大的内存 */
+			a = man->free[i].addr;
+			man->free[i].addr += size;
+			man->free[i].size -= size;
+			if (man->free[i].size == 0) {
+				/* 如果free[i]变成了0，就减掉一条可用信息 */
+				man->frees--;
+				for (; i < man->frees; i++) {
+					man->free[i] = man->free[i + 1]; /* 代入结构体 */
+				}
+			}
+			return a;
+		}
+	}
+	return 0; /* 没有可用空间 */
+}
+
+int memman_free(struct MEMMAN *man, unsigned int addr, unsigned int size)
+/* 释放 */
+{
+	int i, j;
+	/* 为便于归纳内存，将free[]按照addr的顺序排列 */
+	/* 所以，先决定应该放在哪里 */
+	for (i = 0; i < man->frees; i++) {
+		if (man->free[i].addr > addr) {
+			break;
+		}
+	}
+	/* free[i - 1].addr < addr < free[i].addr */
+	if (i > 0) {
+		/* 前面有可用内存 */
+		if (man->free[i - 1].addr + man->free[i - 1].size == addr) {
+			/* 可以与前面的可用内存归纳到一起 */
+			man->free[i - 1].size += size;
+			if (i < man->frees) {
+				/* 后面也有 */
+				if (addr + size == man->free[i].addr) {
+					/* 也可以与后面的可用内存归纳到一起 */
+					man->free[i - 1].size += man->free[i].size;
+					/* man->free[i]删除 */
+					/* free[i]变成0后归纳到前面去 */
+					man->frees--;
+					for (; i < man->frees; i++) {
+						man->free[i] = man->free[i + 1]; /* 结构体赋值 */
+					}
+				}
+			}
+			return 0; /* 成功完成 */
+		}
+	}
+	/* 不能与前面的可用空间归纳到一起 */
+	if (i < man->frees) {
+		/* 后面还有 */
+		if (addr + size == man->free[i].addr) {
+			/* 可以与后面的内容归纳到一起 */
+			man->free[i].addr = addr;
+			man->free[i].size += size;
+			return 0; /* 成功完成 */
+		}
+	}
+	/* 既不能与前面归纳到一起，也不能与后面归纳到一起 */
+	if (man->frees < MEMMAN_FREES) {
+		/* free[i]之后的，向后移动，腾出一点可用空间 */
+		for (j = man->frees; j > i; j--) {
+			man->free[j] = man->free[j - 1];
+		}
+		man->frees++;
+		if (man->maxfrees < man->frees) {
+			man->maxfrees = man->frees; /* 更新最大值 */
+		}
+		man->free[i].addr = addr;
+		man->free[i].size = size;
+		return 0; /* 成功完成 */
+	}
+	/* 不能往后移动 */
+	man->losts++;
+	man->lostsize += size;
+	return -1; /* 失败 */
+}