diff --git a/05_day/bootpack.c b/05_day/bootpack.c
index b3de470..386a0dd 100644
--- a/05_day/bootpack.c
+++ b/05_day/bootpack.c
@@ -34,17 +34,10 @@ struct BOOTINFO {
 
 void HariMain(void)
 {
-	char *vram;/* 声明变量vram、用于BYTE [...]地址 */
-	int xsize, ysize;
-	struct BOOTINFO *binfo;
+	struct BOOTINFO *binfo = (struct BOOTINFO *) 0x0ff0;
 
 	init_palette();
-	binfo = (struct BOOTINFO *) 0x0ff0;
-	xsize = (*binfo).scrnx;
-	ysize = (*binfo).scrny;
-	vram = (*binfo).vram;
-
-	init_screen(vram, xsize, ysize);
+	init_screen(binfo->vram, binfo->scrnx, binfo->scrny);
 
 	for (;;) {
 		io_hlt();