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激活鼠标

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Yourtion
2014-09-17 16:40:55 +08:00
parent 7ac78a7688
commit ac5586eb24
1 changed files with 47 additions and 0 deletions
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47
07_day/bootpack.c
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@@ -4,6 +4,8 @@
#include <stdio.h>
extern struct FIFO8 keyfifo;
void enable_mouse(void);
void init_keyboard(void);
void HariMain(void)
{
@@ -19,6 +21,8 @@ void HariMain(void)
io_out8(PIC0_IMR, 0xf9); /* PIC1とキーボードを許可(11111001) */
io_out8(PIC1_IMR, 0xef); /* マウスを許可(11101111) */
init_keyboard();
init_palette();
init_screen8(binfo->vram, binfo->scrnx, binfo->scrny);
mx = (binfo->scrnx - 16) / 2; /* 计算画面中心坐标 */
@@ -28,6 +32,8 @@ void HariMain(void)
sprintf(s, "(%d, %d)", mx, my);
putfonts8_asc(binfo->vram, binfo->scrnx, 0, 0, COL8_FFFFFF, s);
enable_mouse();
for (;;) {
io_cli();
if (fifo8_status(&keyfifo) == 0) {
@@ -41,3 +47,44 @@ void HariMain(void)
}
}
}
#define PORT_KEYDAT 0x0060
#define PORT_KEYSTA 0x0064
#define PORT_KEYCMD 0x0064
#define KEYSTA_SEND_NOTREADY 0x02
#define KEYCMD_WRITE_MODE 0x60
#define KBC_MODE 0x47
void wait_KBC_sendready(void)
{
/* 等待键盘控制电路准备完毕 */
for (;;) {
if ((io_in8(PORT_KEYSTA) & KEYSTA_SEND_NOTREADY) == 0) {
break;
}
}
return;
}
void init_keyboard(void)
{
/* 初始化键盘控制电路 */
wait_KBC_sendready();
io_out8(PORT_KEYCMD, KEYCMD_WRITE_MODE);
wait_KBC_sendready();
io_out8(PORT_KEYDAT, KBC_MODE);
return;
}
#define KEYCMD_SENDTO_MOUSE 0xd4
#define MOUSECMD_ENABLE 0xf4
void enable_mouse(void)
{
/* 激活鼠标 */
wait_KBC_sendready();
io_out8(PORT_KEYCMD, KEYCMD_SENDTO_MOUSE);
wait_KBC_sendready();
io_out8(PORT_KEYDAT, MOUSECMD_ENABLE);
return; /* 顺利的话，键盘控制器会返回ACK(0xfa) */
}