diff --git a/12_day/bootpack.c b/12_day/bootpack.c
index 6d8385c..57324d0 100644
--- a/12_day/bootpack.c
+++ b/12_day/bootpack.c
@@ -1,4 +1,4 @@
-/* bootpackのメイン */
+/* bootpack*/
 
 #include "bootpack.h"
 #include <stdio.h>
@@ -52,9 +52,9 @@ void HariMain(void)
 	shtctl = shtctl_init(memman, binfo->vram, binfo->scrnx, binfo->scrny);
 	sht_back  = sheet_alloc(shtctl);
 	sht_mouse = sheet_alloc(shtctl);
-	sht_win = sheet_alloc(shtctl);
+	sht_win   = sheet_alloc(shtctl);
 	buf_back  = (unsigned char *) memman_alloc_4k(memman, binfo->scrnx * binfo->scrny);
-	buf_win = (unsigned char *) memman_alloc_4k(memman, 160 * 52);
+	buf_win   = (unsigned char *) memman_alloc_4k(memman, 160 * 52);
 	sheet_setbuf(sht_back, buf_back, binfo->scrnx, binfo->scrny, -1); /* 没有透明色 */
 	sheet_setbuf(sht_mouse, buf_mouse, 16, 16, 99); /* 透明色号99 */
 	sheet_setbuf(sht_win, buf_win, 160, 52, -1); /* 没有透明色 */
@@ -65,13 +65,14 @@ void HariMain(void)
 	mx = (binfo->scrnx - 16) / 2; /* 按显示在画面中央来计算坐标 */
 	my = (binfo->scrny - 28 - 16) / 2;
 	sheet_slide(sht_mouse, mx, my);
-	sheet_slide(sht_win, 80, 72); 
+	sheet_slide(sht_win, 80, 72);
 	sheet_updown(sht_back,  0);
-	sheet_updown(sht_win, 1);
+	sheet_updown(sht_win,   1);
 	sheet_updown(sht_mouse, 2);
 	sprintf(s, "(%3d, %3d)", mx, my);
 	putfonts8_asc(buf_back, binfo->scrnx, 0, 0, COL8_FFFFFF, s);
-	sprintf(s, "memory %dMB free : %dKB", memtotal / (1024 * 1024), memman_total(memman) / 1024);
+	sprintf(s, "memory %dMB   free : %dKB",
+			memtotal / (1024 * 1024), memman_total(memman) / 1024);
 	putfonts8_asc(buf_back, binfo->scrnx, 0, 32, COL8_FFFFFF, s);
 	sheet_refresh(sht_back, 0, 0, binfo->scrnx, 48); /* 刷新文字 */
 
@@ -82,7 +83,8 @@ void HariMain(void)
 		sheet_refresh(sht_win, 40, 28, 120, 44); /* 到这里结束 */
 
 		io_cli();
-		if (fifo8_status(&keyfifo) + fifo8_status(&mousefifo) + fifo8_status(&timerfifo) + fifo8_status(&timerfifo2) + fifo8_status(&timerfifo3)== 0) {
+		if (fifo8_status(&keyfifo) + fifo8_status(&mousefifo) + fifo8_status(&timerfifo)
+				+ fifo8_status(&timerfifo2) + fifo8_status(&timerfifo3) == 0) {
 			io_sti(); /* 不做HLT */
 		} else {
 			if (fifo8_status(&keyfifo) != 0) {
@@ -176,21 +178,19 @@ void make_window8(unsigned char *buf, int xsize, int ysize, char *title)
 		"O$$$$$$$$$$$$$$@",
 		"@@@@@@@@@@@@@@@@"
 	};
-
 	int x, y;
 	char c;
-	boxfill8(buf, xsize, COL8_C6C6C6, 0, 0, xsize - 1, 0 );
-	boxfill8(buf, xsize, COL8_FFFFFF, 1, 1, xsize - 2, 1 );
-	boxfill8(buf, xsize, COL8_C6C6C6, 0, 0, 0, ysize - 1);
-	boxfill8(buf, xsize, COL8_FFFFFF, 1, 1, 1, ysize - 2);
-	boxfill8(buf, xsize, COL8_848484, xsize - 2, 1, xsize - 2, ysize - 2);
-	boxfill8(buf, xsize, COL8_000000, xsize - 1, 0, xsize - 1, ysize - 1);
-	boxfill8(buf, xsize, COL8_C6C6C6, 2, 2, xsize - 3, ysize - 3);
-	boxfill8(buf, xsize, COL8_000084, 3, 3, xsize - 4, 20 );
-	boxfill8(buf, xsize, COL8_848484, 1, ysize - 2, xsize - 2, ysize - 2);
-	boxfill8(buf, xsize, COL8_000000, 0, ysize - 1, xsize - 1, ysize - 1);
+	boxfill8(buf, xsize, COL8_C6C6C6, 0,         0,         xsize - 1, 0        );
+	boxfill8(buf, xsize, COL8_FFFFFF, 1,         1,         xsize - 2, 1        );
+	boxfill8(buf, xsize, COL8_C6C6C6, 0,         0,         0,         ysize - 1);
+	boxfill8(buf, xsize, COL8_FFFFFF, 1,         1,         1,         ysize - 2);
+	boxfill8(buf, xsize, COL8_848484, xsize - 2, 1,         xsize - 2, ysize - 2);
+	boxfill8(buf, xsize, COL8_000000, xsize - 1, 0,         xsize - 1, ysize - 1);
+	boxfill8(buf, xsize, COL8_C6C6C6, 2,         2,         xsize - 3, ysize - 3);
+	boxfill8(buf, xsize, COL8_000084, 3,         3,         xsize - 4, 20       );
+	boxfill8(buf, xsize, COL8_848484, 1,         ysize - 2, xsize - 2, ysize - 2);
+	boxfill8(buf, xsize, COL8_000000, 0,         ysize - 1, xsize - 1, ysize - 1);
 	putfonts8_asc(buf, xsize, 24, 4, COL8_FFFFFF, title);
-
 	for (y = 0; y < 14; y++) {
 		for (x = 0; x < 16; x++) {
 			c = closebtn[y][x];
diff --git a/12_day/int.c b/12_day/int.c
index 7c4226b..c717372 100644
--- a/12_day/int.c
+++ b/12_day/int.c
@@ -1,6 +1,7 @@
 /*初始化关系 */
 
 #include "bootpack.h"
+#include <stdio.h>
 
 void init_pic(void)
 /* PIC初始化 */
@@ -24,8 +25,6 @@ void init_pic(void)
 	return;
 }
 
-#define PORT_KEYDAT		0x0060
-
 void inthandler27(int *esp)
 /* PIC0中断的不完整策略 */
 /* 这个中断在Athlon64X2上通过芯片组提供的便利，只需执行一次 */
diff --git a/12_day/memory.c b/12_day/memory.c
index 654e816..54a447a 100644
--- a/12_day/memory.c
+++ b/12_day/memory.c
@@ -1,11 +1,11 @@
-/* 内存管理 */
+/* �������֌W */
 
 #include "bootpack.h"
 
-#define EFLAGS_AC_BIT			0x00040000
+#define EFLAGS_AC_BIT		0x00040000
 #define CR0_CACHE_DISABLE	0x60000000
 
-unsigned int memtest(unsigned int start, unsigned int end) 
+unsigned int memtest(unsigned int start, unsigned int end)
 {
 	char flg486 = 0;
 	unsigned int eflg, cr0, i;
@@ -40,7 +40,8 @@ unsigned int memtest(unsigned int start, unsigned int end)
 	return i;
 }
 
-void memman_init(struct MEMMAN *man){
+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 */
diff --git a/12_day/mouse.c b/12_day/mouse.c
index 8979b35..294bde4 100644
--- a/12_day/mouse.c
+++ b/12_day/mouse.c
@@ -4,7 +4,8 @@
 
 struct FIFO8 mousefifo;
 
-void inthandler2c(int *esp) {
+void inthandler2c(int *esp)
+{
 	/* 来自PS/2鼠标的中断 */
 	unsigned char data;
 	io_out8(PIC1_OCW2, 0x64);	/* 通知PIC IRQ-12 已经受理完毕 */
@@ -17,7 +18,8 @@ void inthandler2c(int *esp) {
 #define KEYCMD_SENDTO_MOUSE   0xd4
 #define MOUSECMD_ENABLE     0xf4
 
-void enable_mouse(struct MOUSE_DEC *mdec) {
+void enable_mouse(struct MOUSE_DEC *mdec)
+{
 	/* 鼠标有效 */
 	wait_KBC_sendready();
 	io_out8(PORT_KEYCMD, KEYCMD_SENDTO_MOUSE);
@@ -28,7 +30,8 @@ void enable_mouse(struct MOUSE_DEC *mdec) {
 	return;
 }
 
-int mouse_decode(struct MOUSE_DEC *mdec, unsigned char dat) {
+int mouse_decode(struct MOUSE_DEC *mdec, unsigned char dat)
+{
 	if (mdec->phase == 0) {
 		/* 等待鼠标的0xfa的阶段 */
 		if (dat == 0xfa) {
diff --git a/12_day/sheet.c b/12_day/sheet.c
index 61386c0..102381d 100644
--- a/12_day/sheet.c
+++ b/12_day/sheet.c
@@ -86,7 +86,7 @@ void sheet_updown(struct SHEET *sht, int height)
 			}
 			ctl->top--; /* 由于显示中的图层减少了一个，所以最上面的图层高度下降 */
 			sheet_refreshmap(ctl, sht->vx0, sht->vy0, sht->vx0 + sht->bxsize, sht->vy0 + sht->bysize, 0);
-			sheet_refreshsub(ctl, sht->vx0, sht->vy0, sht->vx0 + sht->bxsize, sht->vy0 + sht->bysize, 0, old - 1);		
+			sheet_refreshsub(ctl, sht->vx0, sht->vy0, sht->vx0 + sht->bxsize, sht->vy0 + sht->bysize, 0, old - 1);
 		}
 	} else if (old < height) { /* 比以前高 */
 		if (old >= 0) {
@@ -130,11 +130,10 @@ void sheet_refreshsub(struct SHTCTL *ctl, int vx0, int vy0, int vx1, int vy1, in
 	if (vy0 < 0) { vy0 = 0; }
 	if (vx1 > ctl->xsize) { vx1 = ctl->xsize; }
 	if (vy1 > ctl->ysize) { vy1 = ctl->ysize; }
-
-	for (h = h0; h <= ctl->top; h++) {
+	for (h = h0; h <= h1; h++) {
 		sht = ctl->sheets[h];
 		buf = sht->buf;
-		sid = sht -ctl->sheets0;
+		sid = sht - ctl->sheets0;
 
 		/* 使用vx0～vy1，对bx0～by1进行倒推 */
 		bx0 = vx0 - sht->vx0;
@@ -145,7 +144,6 @@ void sheet_refreshsub(struct SHTCTL *ctl, int vx0, int vy0, int vx1, int vy1, in
 		if (by0 < 0) { by0 = 0; }
 		if (bx1 > sht->bxsize) { bx1 = sht->bxsize; } /* 应对不同的重叠方式 */
 		if (by1 > sht->bysize) { by1 = sht->bysize; }
-
 		for (by = by0; by < by1; by++) {
 			vy = sht->vy0 + by;
 			for (bx = bx0; bx < bx1; bx++) {
@@ -164,12 +162,10 @@ void sheet_refreshmap(struct SHTCTL *ctl, int vx0, int vy0, int vx1, int vy1, in
 	int h, bx, by, vx, vy, bx0, by0, bx1, by1;
 	unsigned char *buf, sid, *map = ctl->map;
 	struct SHEET *sht;
-
 	if (vx0 < 0) { vx0 = 0; }
 	if (vy0 < 0) { vy0 = 0; }
 	if (vx1 > ctl->xsize) { vx1 = ctl->xsize; }
 	if (vy1 > ctl->ysize) { vy1 = ctl->ysize; }
-
 	for (h = h0; h <= ctl->top; h++) {
 		sht = ctl->sheets[h];
 		sid = sht - ctl->sheets0; /* 将进行了减法计算的地址作为图层号码使用 */
@@ -182,7 +178,6 @@ void sheet_refreshmap(struct SHTCTL *ctl, int vx0, int vy0, int vx1, int vy1, in
 		if (by0 < 0) { by0 = 0; }
 		if (bx1 > sht->bxsize) { bx1 = sht->bxsize; }
 		if (by1 > sht->bysize) { by1 = sht->bysize; }
-
 		for (by = by0; by < by1; by++) {
 			vy = sht->vy0 + by;
 			for (bx = bx0; bx < bx1; bx++) {
diff --git a/12_day/timer.c b/12_day/timer.c
index cc773ef..5c46b22 100644
--- a/12_day/timer.c
+++ b/12_day/timer.c
@@ -2,13 +2,14 @@
 
 #include "bootpack.h"
 
-#define PIT_CTRL 0x0043
-#define PIT_CNT0 0x0040
-#define TIMER_FLAGS_ALLOC 1 /* 已配置状态 */
-#define TIMER_FLAGS_USING 2 /* 定时器运行中 */
+#define PIT_CTRL	0x0043
+#define PIT_CNT0	0x0040
 
 struct TIMERCTL timerctl;
 
+#define TIMER_FLAGS_ALLOC 1 /* 已配置状态 */
+#define TIMER_FLAGS_USING 2 /* 定时器运行中 */
+
 void init_pit(void)
 {
 	int i;