From 82053201102958f2092cdcf2cc0018b33ca3d002 Mon Sep 17 00:00:00 2001
From: Yourtion <yourtion@gmail.com>
Date: Fri, 12 Sep 2014 16:37:27 +0800
Subject: [PATCH] =?UTF-8?q?=E5=88=9D=E5=A7=8B=E5=8C=96PIC?=
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---
 06_day/Makefile   |  5 +++--
 06_day/bootpack.c |  2 ++
 06_day/bootpack.h | 15 +++++++++++++++
 06_day/int.c      | 25 +++++++++++++++++++++++++
 4 files changed, 45 insertions(+), 2 deletions(-)
 create mode 100644 06_day/int.c

diff --git a/06_day/Makefile b/06_day/Makefile
index d24cb0d..199cdee 100644
--- a/06_day/Makefile
+++ b/06_day/Makefile
@@ -1,4 +1,5 @@
-OBJS_BOOTPACK = bootpack.obj naskfunc.obj hankaku.obj graphic.obj dsctbl.obj
+OBJS_BOOTPACK = bootpack.obj naskfunc.obj hankaku.obj graphic.obj dsctbl.obj \
+		int.obj
 
 TOOLPATH = ../z_tools/
 INCPATH  = ../z_tools/haribote/
@@ -64,7 +65,7 @@ haribote.img : ipl10.bin haribote.sys Makefile
 %.obj : %.nas Makefile
 	$(NASK) $*.nas $*.obj $*.lst
 
-# �R�}���h
+# 运行程序
 
 img :
 	$(MAKE) haribote.img
diff --git a/06_day/bootpack.c b/06_day/bootpack.c
index c10411b..8155700 100644
--- a/06_day/bootpack.c
+++ b/06_day/bootpack.c
@@ -10,6 +10,8 @@ void HariMain(void)
 	int mx, my;
 
 	init_gdtidt();
+	init_pic();
+	
 	init_palette();
 	init_screen8(binfo->vram, binfo->scrnx, binfo->scrny);
 	mx = (binfo->scrnx - 16) / 2; /* 计算画面的中心坐标*/
diff --git a/06_day/bootpack.h b/06_day/bootpack.h
index 7880d5a..ef3a2ac 100644
--- a/06_day/bootpack.h
+++ b/06_day/bootpack.h
@@ -67,3 +67,18 @@ void set_gatedesc(struct GATE_DESCRIPTOR *gd, int offset, int selector, int ar);
 #define LIMIT_BOTPAK	0x0007ffff
 #define AR_DATA32_RW	0x4092
 #define AR_CODE32_ER	0x409a
+
+/* int.c */
+void init_pic(void);
+#define PIC0_ICW1		0x0020
+#define PIC0_OCW2		0x0020
+#define PIC0_IMR		0x0021
+#define PIC0_ICW2		0x0021
+#define PIC0_ICW3		0x0021
+#define PIC0_ICW4		0x0021
+#define PIC1_ICW1		0x00a0
+#define PIC1_OCW2		0x00a0
+#define PIC1_IMR		0x00a1
+#define PIC1_ICW2		0x00a1
+#define PIC1_ICW3		0x00a1
+#define PIC1_ICW4		0x00a1
\ No newline at end of file
diff --git a/06_day/int.c b/06_day/int.c
new file mode 100644
index 0000000..fc945e0
--- /dev/null
+++ b/06_day/int.c
@@ -0,0 +1,25 @@
+/*初始化关系 */
+
+#include "bootpack.h"
+
+void init_pic(void)
+/* PIC初始化 */
+{
+	io_out8(PIC0_IMR,  0xff  ); /* 禁止所有中断 */
+	io_out8(PIC1_IMR,  0xff  ); /* 禁止所有中断 */
+
+	io_out8(PIC0_ICW1, 0x11  ); /* 边缘触发模式（edge trigger mode） */
+	io_out8(PIC0_ICW2, 0x20  ); /* IRQ0-7由INT20-27接收 */
+	io_out8(PIC0_ICW3, 1 << 2); /* PIC1由IRQ2相连 */
+	io_out8(PIC0_ICW4, 0x01  ); /* 无缓冲区模式 */
+
+	io_out8(PIC1_ICW1, 0x11  ); /* 边缘触发模式（edge trigger mode） */
+	io_out8(PIC1_ICW2, 0x28  ); /* IRQ8-15由INT28-2f接收 */
+	io_out8(PIC1_ICW3, 2     ); /* PIC1由IRQ2连接 */
+	io_out8(PIC1_ICW4, 0x01  ); /* 无缓冲区模式 */
+
+	io_out8(PIC0_IMR,  0xfb  ); /* 11111011 PIC1以外全部禁止 */
+	io_out8(PIC1_IMR,  0xff  ); /* 11111111 禁止所有中断 */
+
+	return;
+}