转载CSDN:https://blog.csdn.net/zl18206208825/article/details/105494751
第11天 制作窗口
鼠标显示问题
harib08a
准备材料(windows环境)
- VMware Workstation
- Visual Studio Code
- 程序和源代码:https://pan.baidu.com/s/1bFGAYgnA0m9KB7tzFrMD5g
提取码:d210 - Makefile
- windows 批处理
开始实验
在tolset文件夹下创建子文件侠harib08a。
打开记事本,输入以下代码并另存为 !cons_nt.bat文件(windows 批处理),存放在harib08a文件夹中。
cmd.exe
ps:当然也可以直接使用 win + r 快捷键也可以,不过最好还是创建一个比较好。因为以后打开时不需要再麻烦了。
- 打开vc code,输入以下代码并保存为 naskfunc.nas,存放在harib08a文件夹中。
; naskfunc
; TAB=4
[FORMAT "WCOFF"] ; 制作目标文件的模式
[INSTRSET "i486p"] ; 要使用486指令的语句
[BITS 32] ; 制作32位模式用的机器语言
[FILE "naskfunc.nas"] ; 原文件名信息
GLOBAL _io_hlt, _io_cli, _io_sti, _io_stihlt
GLOBAL _io_in8, _io_in16, _io_in32
GLOBAL _io_out8, _io_out16, _io_out32
GLOBAL _io_load_eflags, _io_store_eflags
GLOBAL _load_gdtr, _load_idtr
GLOBAL _load_cr0, _store_cr0
GLOBAL _asm_inthandler21, _asm_inthandler27, _asm_inthandler2c
GLOBAL _memtest_sub
EXTERN _inthandler21, _inthandler27, _inthandler2c
[SECTION .text]
_io_hlt: ; void io_hlt(void);
HLT
RET
_io_cli: ; void io_cli(void);
CLI
RET
_io_sti: ; void io_sti(void);
STI
RET
_io_stihlt: ; void io_stihlt(void);
STI
HLT
RET
_io_in8: ; int io_in8(int port);
MOV EDX,[ESP+4] ; port
MOV EAX,0
IN AL,DX
RET
_io_in16: ; int io_in16(int port);
MOV EDX,[ESP+4] ; port
MOV EAX,0
IN AX,DX
RET
_io_in32: ; int io_in32(int port);
MOV EDX,[ESP+4] ; port
IN EAX,DX
RET
_io_out8: ; void io_out8(int port, int data);
MOV EDX,[ESP+4] ; port
MOV AL,[ESP+8] ; data
OUT DX,AL
RET
_io_out16: ; void io_out16(int port, int data);
MOV EDX,[ESP+4] ; port
MOV EAX,[ESP+8] ; data
OUT DX,AX
RET
_io_out32: ; void io_out32(int port, int data);
MOV EDX,[ESP+4] ; port
MOV EAX,[ESP+8] ; data
OUT DX,EAX
RET
_io_load_eflags: ; int io_load_eflags(void);
PUSHFD ; 指 PUSH EFLAGS
POP EAX
RET
_io_store_eflags: ; void io_store_eflags(int eflags);
MOV EAX,[ESP+4]
PUSH EAX
POPFD ; 指 POP EFLAGS
RET
_load_gdtr: ; void load_gdtr(int limit, int addr);
MOV AX,[ESP+4] ; limit
MOV [ESP+6],AX
LGDT [ESP+6]
RET
_load_idtr: ; void load_idtr(int limit, int addr);
MOV AX,[ESP+4] ; limit
MOV [ESP+6],AX
LIDT [ESP+6]
RET
_load_cr0: ; int load_cr0(void);
MOV EAX,CR0
RET
_store_cr0: ; void store_cr0(int cr0);
MOV EAX,[ESP+4]
MOV CR0,EAX
RET
_asm_inthandler21:
PUSH ES
PUSH DS
PUSHAD
MOV EAX,ESP
PUSH EAX
MOV AX,SS
MOV DS,AX
MOV ES,AX
CALL _inthandler21
POP EAX
POPAD
POP DS
POP ES
IRETD
_asm_inthandler27:
PUSH ES
PUSH DS
PUSHAD
MOV EAX,ESP
PUSH EAX
MOV AX,SS
MOV DS,AX
MOV ES,AX
CALL _inthandler27
POP EAX
POPAD
POP DS
POP ES
IRETD
_asm_inthandler2c:
PUSH ES
PUSH DS
PUSHAD
MOV EAX,ESP
PUSH EAX
MOV AX,SS
MOV DS,AX
MOV ES,AX
CALL _inthandler2c
POP EAX
POPAD
POP DS
POP ES
IRETD
_memtest_sub: ; unsigned int memtest_sub(unsigned int start, unsigned int end)
PUSH EDI ; (由于还要使用EBX, ESI, EDI)
PUSH ESI
PUSH EBX
MOV ESI,0xaa55aa55 ; pat0 = 0xaa55aa55;
MOV EDI,0x55aa55aa ; pat1 = 0x55aa55aa;
MOV EAX,[ESP+12+4] ; i = start;
mts_loop:
MOV EBX,EAX
ADD EBX,0xffc ; p = i + 0xffc;
MOV EDX,[EBX] ; old = *p;
MOV [EBX],ESI ; *p = pat0;
XOR DWORD [EBX],0xffffffff ; *p ^= 0xffffffff;
CMP EDI,[EBX] ; if (*p != pat1) goto fin;
JNE mts_fin
XOR DWORD [EBX],0xffffffff ; *p ^= 0xffffffff;
CMP ESI,[EBX] ; if (*p != pat0) goto fin;
JNE mts_fin
MOV [EBX],EDX ; *p = old;
ADD EAX,0x1000 ; i += 0x1000;
CMP EAX,[ESP+12+8] ; if (i <= end) goto mts_loop;
JBE mts_loop
POP EBX
POP ESI
POP EDI
RET
mts_fin:
MOV [EBX],EDX ; *p = old;
POP EBX
POP ESI
POP EDI
RET
- 打开vc code,输入以下代码并保存为 bootpack.c 存放在harib08a文件夹中。
/* bootpack 其他处理 */
#include "bootpack.h"
#include
void HariMain(void)
{
struct BOOTINFO *binfo = (struct BOOTINFO *) ADR_BOOTINFO;
char s[40], keybuf[32], mousebuf[128];
int mx, my, i;
unsigned int memtotal;
struct MOUSE_DEC mdec;
struct MEMMAN *memman = (struct MEMMAN *) MEMMAN_ADDR;
struct SHTCTL *shtctl;
struct SHEET *sht_back, *sht_mouse;
unsigned char *buf_back, buf_mouse[256];
init_gdtidt();
init_pic();
io_sti(); /* 由于IDT / PIC的初始化已完成,因此请禁用CPU的中断。 */
fifo8_init(&keyfifo, 32, keybuf);
fifo8_init(&mousefifo, 128, mousebuf);
io_out8(PIC0_IMR, 0xf9); /* 允许PIC1和键盘(11111001) */
io_out8(PIC1_IMR, 0xef); /* 允许鼠标(11101111) */
init_keyboard();
enable_mouse(&mdec);
memtotal = memtest(0x00400000, 0xbfffffff);
memman_init(memman);
memman_free(memman, 0x00001000, 0x0009e000); /* 0x00001000 - 0x0009efff */
memman_free(memman, 0x00400000, memtotal - 0x00400000);
init_palette();
shtctl = shtctl_init(memman, binfo->vram, binfo->scrnx, binfo->scrny);
sht_back = sheet_alloc(shtctl);
sht_mouse = sheet_alloc(shtctl);
buf_back = (unsigned char *) memman_alloc_4k(memman, binfo->scrnx * binfo->scrny);
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 */
init_screen8(buf_back, binfo->scrnx, binfo->scrny);
init_mouse_cursor8(buf_mouse, 99); /* 背景色号99 */
sheet_slide(shtctl, sht_back, 0, 0);
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(shtctl, sht_mouse, mx, my);
sheet_updown(shtctl, sht_back, 0);
sheet_updown(shtctl, sht_mouse, 1);
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);
putfonts8_asc(buf_back, binfo->scrnx, 0, 32, COL8_FFFFFF, s);
sheet_refresh(shtctl, sht_back, 0, 0, binfo->scrnx, 48); /* 这里! */
for (;;) {
io_cli();
if (fifo8_status(&keyfifo) + fifo8_status(&mousefifo) == 0) {
io_stihlt();
} else {
if (fifo8_status(&keyfifo) != 0) {
i = fifo8_get(&keyfifo);
io_sti();
sprintf(s, "%02X", i);
boxfill8(buf_back, binfo->scrnx, COL8_008484, 0, 16, 15, 31);
putfonts8_asc(buf_back, binfo->scrnx, 0, 16, COL8_FFFFFF, s);
sheet_refresh(shtctl, sht_back, 0, 16, 16, 32);
} else if (fifo8_status(&mousefifo) != 0) {
i = fifo8_get(&mousefifo);
io_sti();
if (mouse_decode(&mdec, i) != 0) {
/* 因为已得到3字节的数据所以显示 */
sprintf(s, "[lcr %4d %4d]", mdec.x, mdec.y);
if ((mdec.btn & 0x01) != 0) {
s[1] = 'L';
}
if ((mdec.btn & 0x02) != 0) {
s[3] = 'R';
}
if ((mdec.btn & 0x04) != 0) {
s[2] = 'C';
}
boxfill8(buf_back, binfo->scrnx, COL8_008484, 32, 16, 32 + 15 * 8 - 1, 31);
putfonts8_asc(buf_back, binfo->scrnx, 32, 16, COL8_FFFFFF, s);
sheet_refresh(shtctl, sht_back, 32, 16, 32 + 15 * 8, 32); /* 这里! */
/* 移动光标 */
mx += mdec.x;
my += mdec.y;
if (mx < 0) {
mx = 0;
}
if (my < 0) {
my = 0;
}
if (mx > binfo->scrnx - 1) {
mx = binfo->scrnx - 1;
}
if (my > binfo->scrny - 1) {
my = binfo->scrny - 1;
}
sprintf(s, "(%3d, %3d)", mx, my);
boxfill8(buf_back, binfo->scrnx, COL8_008484, 0, 0, 79, 15); /* 消去坐标 */
putfonts8_asc(buf_back, binfo->scrnx, 0, 0, COL8_FFFFFF, s); /* 写出坐标 */
sheet_refresh(shtctl, sht_back, 0, 0, 80, 16); /* 这里! */
sheet_slide(shtctl, sht_mouse, mx, my);
}
}
}
}
}
- 打开vc code,输入以下代码并保存为 bootpack.h 存放在harib08a文件夹中。
/* asmhead.nas */
struct BOOTINFO { /* 0xff0-0x0fff */
char cyls; /* 启动区读硬盘读到何处为止 */
char leds; /* 启动时键盘LED的状态 */
char vmode; /* 显卡模式为多少位彩色 */
char reserve;
short scrnx, scrny; /* 画面分辨率 */
char *vram;
};
#define ADR_BOOTINFO 0x00000ff0
/* naskfunc.nas */
void io_hlt(void);
void io_cli(void);
void io_sti(void);
void io_stihlt(void);
int io_in8(int port);
void io_out8(int port, int data);
int io_load_eflags(void);
void io_store_eflags(int eflags);
void load_gdtr(int limit, int addr);
void load_idtr(int limit, int addr);
int load_cr0(void);
void store_cr0(int cr0);
void asm_inthandler21(void);
void asm_inthandler27(void);
void asm_inthandler2c(void);
unsigned int memtest_sub(unsigned int start, unsigned int end);
/* fifo.c */
struct FIFO8 {
unsigned char *buf;
int p, q, size, free, flags;
};
void fifo8_init(struct FIFO8 *fifo, int size, unsigned char *buf);
int fifo8_put(struct FIFO8 *fifo, unsigned char data);
int fifo8_get(struct FIFO8 *fifo);
int fifo8_status(struct FIFO8 *fifo);
/* graphic.c */
void init_palette(void);
void set_palette(int start, int end, unsigned char *rgb);
void boxfill8(unsigned char *vram, int xsize, unsigned char c, int x0, int y0, int x1, int y1);
void init_screen8(char *vram, int x, int y);
void putfont8(char *vram, int xsize, int x, int y, char c, char *font);
void putfonts8_asc(char *vram, int xsize, int x, int y, char c, unsigned char *s);
void init_mouse_cursor8(char *mouse, char bc);
void putblock8_8(char *vram, int vxsize, int pxsize,
int pysize, int px0, int py0, char *buf, int bxsize);
#define COL8_000000 0
#define COL8_FF0000 1
#define COL8_00FF00 2
#define COL8_FFFF00 3
#define COL8_0000FF 4
#define COL8_FF00FF 5
#define COL8_00FFFF 6
#define COL8_FFFFFF 7
#define COL8_C6C6C6 8
#define COL8_840000 9
#define COL8_008400 10
#define COL8_848400 11
#define COL8_000084 12
#define COL8_840084 13
#define COL8_008484 14
#define COL8_848484 15
/* dsctbl.c */
struct SEGMENT_DESCRIPTOR {
short limit_low, base_low;
char base_mid, access_right;
char limit_high, base_high;
};
struct GATE_DESCRIPTOR {
short offset_low, selector;
char dw_count, access_right;
short offset_high;
};
void init_gdtidt(void);
void set_segmdesc(struct SEGMENT_DESCRIPTOR *sd, unsigned int limit, int base, int ar);
void set_gatedesc(struct GATE_DESCRIPTOR *gd, int offset, int selector, int ar);
#define ADR_IDT 0x0026f800
#define LIMIT_IDT 0x000007ff
#define ADR_GDT 0x00270000
#define LIMIT_GDT 0x0000ffff
#define ADR_BOTPAK 0x00280000
#define LIMIT_BOTPAK 0x0007ffff
#define AR_DATA32_RW 0x4092
#define AR_CODE32_ER 0x409a
#define AR_INTGATE32 0x008e
/* int.c */
void init_pic(void);
void inthandler27(int *esp);
#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
/* keyboard.c */
void inthandler21(int *esp);
void wait_KBC_sendready(void);
void init_keyboard(void);
extern struct FIFO8 keyfifo;
#define PORT_KEYDAT 0x0060
#define PORT_KEYCMD 0x0064
/* mouse.c */
struct MOUSE_DEC {
unsigned char buf[3], phase;
int x, y, btn;
};
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);
unsigned int memman_alloc_4k(struct MEMMAN *man, unsigned int size);
int memman_free_4k(struct MEMMAN *man, unsigned int addr, unsigned int size);
/* sheet.c */
#define MAX_SHEETS 256
struct SHEET {
unsigned char *buf;
int bxsize, bysize, vx0, vy0, col_inv, height, flags;
};
struct SHTCTL {
unsigned char *vram;
int xsize, ysize, top;
struct SHEET *sheets[MAX_SHEETS];
struct SHEET sheets0[MAX_SHEETS];
};
struct SHTCTL *shtctl_init(struct MEMMAN *memman, unsigned char *vram, int xsize, int ysize);
struct SHEET *sheet_alloc(struct SHTCTL *ctl);
void sheet_setbuf(struct SHEET *sht, unsigned char *buf, int xsize, int ysize, int col_inv);
void sheet_updown(struct SHTCTL *ctl, struct SHEET *sht, int height);
void sheet_refresh(struct SHTCTL *ctl, struct SHEET *sht, int bx0, int by0, int bx1, int by1);
void sheet_slide(struct SHTCTL *ctl, struct SHEET *sht, int vx0, int vy0);
void sheet_free(struct SHTCTL *ctl, struct SHEET *sht);
- 打开vc code,输入以下代码并保存为 dsctbl.c 存放在harib08a文件夹中。
/* 关于GDT,IDT等descriptor table的处理 */
#include "bootpack.h"
void init_gdtidt(void)
{
struct SEGMENT_DESCRIPTOR *gdt = (struct SEGMENT_DESCRIPTOR *) ADR_GDT;
struct GATE_DESCRIPTOR *idt = (struct GATE_DESCRIPTOR *) ADR_IDT;
int i;
/* GDT的初始化 */
for (i = 0; i <= LIMIT_GDT / 8; i++) {
set_segmdesc(gdt + i, 0, 0, 0);
}
set_segmdesc(gdt + 1, 0xffffffff, 0x00000000, AR_DATA32_RW);
set_segmdesc(gdt + 2, LIMIT_BOTPAK, ADR_BOTPAK, AR_CODE32_ER);
load_gdtr(LIMIT_GDT, ADR_GDT);
/* IDT的初始化 */
for (i = 0; i <= LIMIT_IDT / 8; i++) {
set_gatedesc(idt + i, 0, 0, 0);
}
load_idtr(LIMIT_IDT, ADR_IDT);
/* IDT的设定 */
set_gatedesc(idt + 0x21, (int) asm_inthandler21, 2 * 8, AR_INTGATE32);
set_gatedesc(idt + 0x27, (int) asm_inthandler27, 2 * 8, AR_INTGATE32);
set_gatedesc(idt + 0x2c, (int) asm_inthandler2c, 2 * 8, AR_INTGATE32);
return;
}
void set_segmdesc(struct SEGMENT_DESCRIPTOR *sd, unsigned int limit, int base, int ar)
{
if (limit > 0xfffff) {
ar |= 0x8000; /* G_bit = 1 */
limit /= 0x1000;
}
sd->limit_low = limit & 0xffff;
sd->base_low = base & 0xffff;
sd->base_mid = (base >> 16) & 0xff;
sd->access_right = ar & 0xff;
sd->limit_high = ((limit >> 16) & 0x0f) | ((ar >> 8) & 0xf0);
sd->base_high = (base >> 24) & 0xff;
return;
}
void set_gatedesc(struct GATE_DESCRIPTOR *gd, int offset, int selector, int ar)
{
gd->offset_low = offset & 0xffff;
gd->selector = selector;
gd->dw_count = (ar >> 8) & 0xff;
gd->access_right = ar & 0xff;
gd->offset_high = (offset >> 16) & 0xffff;
return;
}
ps: 。
- 打vc code,输入以下代码并保存为 fifo.c,存放在harib08a文件夹中。
/* FIFO库 */
#include "bootpack.h"
#define FLAGS_OVERRUN 0x0001
void fifo8_init(struct FIFO8 *fifo, int size, unsigned char *buf)
/* 初始化 FIFO 缓冲区 */
{
fifo->size = size;
fifo->buf = buf;
fifo->free = size; /* 缓冲区的大小 */
fifo->flags = 0;
fifo->p = 0; /* 下一个数据写入位置 */
fifo->q = 0; /* 下一个数据读出位置 */
return;
}
int fifo8_put(struct FIFO8 *fifo, unsigned char data)
/* 向 FIFO 传送数据并保存 */
{
if (fifo->free == 0) {
/* 空余没有了,溢出 */
fifo->flags |= FLAGS_OVERRUN;
return -1;
}
fifo->buf[fifo->p] = data;
fifo->p++;
if (fifo->p == fifo->size) {
fifo->p = 0;
}
fifo->free--;
return 0;
}
int fifo8_get(struct FIFO8 *fifo)
/* 从 FIFO 取得一个数据 */
{
int data;
if (fifo->free == fifo->size) {
/* 如果缓冲区为空,则返回-1 */
return -1;
}
data = fifo->buf[fifo->q];
fifo->q++;
if (fifo->q == fifo->size) {
fifo->q = 0;
}
fifo->free++;
return data;
}
int fifo8_status(struct FIFO8 *fifo)
/* 报告一下到底积攒了多少数据 */
{
return fifo->size - fifo->free;
}
- 打vc code,输入以下代码并保存为 graphic.c,存放在harib08a文件夹中。
/* u关于描画的处理 */
#include "bootpack.h"
void init_palette(void)
{
static unsigned char table_rgb[16 * 3] = {
0x00, 0x00, 0x00, /* 0 : 黑 */
0xff, 0x00, 0x00, /* 1 : 亮红 */
0x00, 0xff, 0x00, /* 2 : 亮绿 */
0xff, 0xff, 0x00, /* 3 : 亮黄 */
0x00, 0x00, 0xff, /* 4 :亮蓝 */
0xff, 0x00, 0xff, /* 5 : 亮紫 */
0x00, 0x00, 0xff, /* 6 : 浅亮蓝 */
0xff, 0xff, 0xff, /* 7 :白 */
0xc6, 0xc6, 0xc6, /* 8 : 亮灰 */
0x84, 0x00, 0x00, /* 9 : 暗红 */
0x00, 0x84, 0x00, /* 10 : 暗绿 */
0x84, 0x84, 0x00, /* 11 : 暗黄 */
0x00, 0x00, 0x84, /* 12 : 暗青 */
0x84, 0x00, 0x84, /* 13 : 暗紫 */
0x00, 0x84, 0x84, /* 14 : 浅暗蓝 */
0x84, 0x84, 0x84 /* 15 : 暗灰 */
};
set_palette(0, 15, table_rgb);
return;
/* C语言中的static char语句只能用于数据, 相当于汇编中的DB指令 */
}
void set_palette(int start, int end, unsigned char *rgb)
{
int i, eflags;
eflags = io_load_eflags(); /* 记录中断许可标志的值 */
io_cli(); /* 将中断许可标志置为0, 禁止中断 */
io_out8(0x03c8, start);
for (i = start; i <= end; i++) {
io_out8(0x03c9, rgb[0] / 4);
io_out8(0x03c9, rgb[1] / 4);
io_out8(0x03c9, rgb[2] / 4);
rgb += 3;
}
io_store_eflags(eflags); /* 复原中断许可标志 */
return;
}
void boxfill8(unsigned char *vram, int xsize, unsigned char c, int x0, int y0, int x1, int y1)
{
int x, y;
for (y = y0; y <= y1; y++) {
for (x = x0; x <= x1; x++)
vram[y * xsize + x] = c;
}
return;
}
void init_screen8(char *vram, int x, int y)
{
boxfill8(vram, x, COL8_008484, 0, 0, x - 1, y - 29);
boxfill8(vram, x, COL8_C6C6C6, 0, y - 28, x - 1, y - 28);
boxfill8(vram, x, COL8_FFFFFF, 0, y - 27, x - 1, y - 27);
boxfill8(vram, x, COL8_C6C6C6, 0, y - 26, x - 1, y - 1);
boxfill8(vram, x, COL8_FFFFFF, 3, y - 24, 59, y - 24);
boxfill8(vram, x, COL8_FFFFFF, 2, y - 24, 2, y - 4);
boxfill8(vram, x, COL8_848484, 3, y - 4, 59, y - 4);
boxfill8(vram, x, COL8_848484, 59, y - 23, 59, y - 5);
boxfill8(vram, x, COL8_000000, 2, y - 3, 59, y - 3);
boxfill8(vram, x, COL8_000000, 60, y - 24, 60, y - 3);
boxfill8(vram, x, COL8_848484, x - 47, y - 24, x - 4, y - 24);
boxfill8(vram, x, COL8_848484, x - 47, y - 23, x - 47, y - 4);
boxfill8(vram, x, COL8_FFFFFF, x - 47, y - 3, x - 4, y - 3);
boxfill8(vram, x, COL8_FFFFFF, x - 3, y - 24, x - 3, y - 3);
return;
}
void putfont8(char *vram, int xsize, int x, int y, char c, char *font)
{
int i;
char *p, d; /* date */
for (i = 0; i < 16; i++) {
p = vram + (y + i) * xsize + x;
d = font[i];
if ((d & 0x80) != 0) { p[0] = c; }
if ((d & 0x40) != 0) { p[1] = c; }
if ((d & 0x20) != 0) { p[2] = c; }
if ((d & 0x10) != 0) { p[3] = c; }
if ((d & 0x08) != 0) { p[4] = c; }
if ((d & 0x04) != 0) { p[5] = c; }
if ((d & 0x02) != 0) { p[6] = c; }
if ((d & 0x01) != 0) { p[7] = c; }
}
return;
}
void putfonts8_asc(char *vram, int xsize, int x, int y, char c, unsigned char *s)
{
extern char hankaku[4096];
for (; *s != 0x00; s++) {
putfont8(vram, xsize, x, y, c, hankaku + *s * 16);
x += 8;
}
return;
}
void init_mouse_cursor8(char *mouse, char bc)
/* 准备鼠标指标 (16 x 16) */
{
static char cursor[16][16] = {
"**************..",
"*OOOOOOOOOOO*...",
"*OOOOOOOOOO*....",
"*OOOOOOOOO*.....",
"*OOOOOOOO*......",
"*OOOOOOO*.......",
"*OOOOOOO*.......",
"*OOOOOOOO*......",
"*OOOO**OOO*.....",
"*OOO*..*OOO*....",
"*OO*....*OOO*...",
"*O*......*OOO*..",
"**........*OOO*.",
"*..........*OOO*",
"............*OO*",
".............***"
};
int x, y;
for (y = 0; y < 16; y++) {
for (x = 0; x < 16; x++) {
if (cursor[y][x] == '*') {
mouse[y * 16 + x] = COL8_000000;
}
if (cursor[y][x] == 'O') {
mouse[y * 16 + x] = COL8_FFFFFF;
}
if (cursor[y][x] == '.') {
mouse[y * 16 + x] = bc;
}
}
}
return;
}
void putblock8_8(char *vram, int vxsize, int pxsize,
int pysize, int px0, int py0, char *buf, int bxsize)
{
int x, y;
for (y = 0; y < pysize; y++) {
for (x = 0; x < pxsize; x++) {
vram[(py0 + y) * vxsize + (px0 + x)] = buf[y * bxsize + x];
}
}
return;
}
- 打vc code,输入以下代码并保存为 int.c,存放在harib08a文件夹中。
/* 与中断有关 */
#include "bootpack.h"
#include
void init_pic(void)
/* PIC的初始化 */
{
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 ); /* 边沿触发模式 (edge trigger mode) */
io_out8(PIC0_ICW2, 0x20 ); /* IRQ0-7 由 INT20-27 接收 */
io_out8(PIC0_ICW3, 1 << 2); /* PIC1 由 IRQ2 连接 */
io_out8(PIC0_ICW4, 0x01 ); /* 无缓冲区模式 */
io_out8(PIC1_ICW1, 0x11 ); /* 边沿触发模式 (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 ); /* 无缓冲区域 */
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;
}
void inthandler27(int *esp)
/* 防止来自PIC0的不完整中断的措施 */
/* 在Athlon64X2机器等中,由于芯片组的便利性,该中断在PIC初始化时仅发生一次 */
/* 此中断处理功能不执行中断 */
/* 您为什么不做任何事情? */
/* 由于此中断是由PIC初始化期间的电气噪声产生的,*/
/* 您不需要认真做任何事情。 */
{
io_out8(PIC0_OCW2, 0x67); /* 通知PIC IRQ-07已被接受(见7-1)*/
return;
}
- 打vc code,输入以下代码并保存为 keyboard.c,存放在harib08a文件夹中。
/* 与键盘相关 */
#include "bootpack.h"
struct FIFO8 keyfifo;
void inthandler21(int *esp)
{
unsigned char data;
io_out8(PIC0_OCW2, 0x61); /* 通知PIC“IRQ-01”已经受理完毕 */
data = io_in8(PORT_KEYDAT);
fifo8_put(&keyfifo, data);
return;
}
#define PORT_KEYSTA 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;
}
- 打vc code,输入以下代码并保存为 memory.c,存放在harib08a文件夹中。
/* 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; /* 释放失败的内在的大小总和 */
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命令 */
{
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[]放按照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) {
/* 前面有可用内在 */
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 */
}
unsigned int memman_alloc_4k(struct MEMMAN *man, unsigned int size)
{
unsigned int a;
size = (size + 0xfff) & 0xfffff000;
a = memman_alloc(man, size);
return a;
}
int memman_free_4k(struct MEMMAN *man, unsigned int addr, unsigned int size)
{
int i;
size = (size + 0xfff) & 0xfffff000;
i = memman_free(man, addr, size);
return i;
}
- 打vc code,输入以下代码并保存为 mouse.c,存放在harib08a文件夹中。
/* 与鼠标相关 */
#include "bootpack.h"
struct FIFO8 mousefifo;
void inthandler2c(int *esp)
/* 来自PS/2键盘的中断 */
{
unsigned char data;
io_out8(PIC1_OCW2, 0x64); /* 通知PIC1 IRQ-12的受理已经完成 */
io_out8(PIC0_OCW2, 0x62); /* 通知PIC0 IRQ-02的受理已经完成 */
data = io_in8(PORT_KEYDAT);
fifo8_put(&mousefifo, data);
return;
}
#define KEYCMD_SENDTO_MOUSE 0xd4
#define MOUSECMD_ENABLE 0xf4
void enable_mouse(struct MOUSE_DEC *mdec)
{
/* 激活鼠标 */
wait_KBC_sendready();
io_out8(PORT_KEYCMD, KEYCMD_SENDTO_MOUSE);
wait_KBC_sendready();
io_out8(PORT_KEYDAT, MOUSECMD_ENABLE);
/* 顺利的话,ACK(0xfa)会被传送过来 */
mdec->phase = 0; /* 等待0xfa的阶段 */
return;
}
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) {
mdec->phase = 1;
}
return 0;
}
if (mdec->phase == 1) {
/* 等待鼠标第一字节的阶段 */
if ((dat & 0xc8) == 0x08) {
/* 如果第一字节正确 */
mdec->buf[0] = dat;
mdec->phase = 2;
}
return 0;
}
if (mdec->phase == 2) {
/* 等待鼠标第二字节的阶段 */
mdec->buf[1] = dat;
mdec->phase = 3;
return 0;
}
if (mdec->phase == 3) {
/* 等待鼠标第三字节的阶段 */
mdec->buf[2] = dat;
mdec->phase = 1;
mdec->btn = mdec->buf[0] & 0x07;
mdec->x = mdec->buf[1];
mdec->y = mdec->buf[2];
if ((mdec->buf[0] & 0x10) != 0) {
mdec->x |= 0xffffff00;
}
if ((mdec->buf[0] & 0x20) != 0) {
mdec->y |= 0xffffff00;
}
mdec->y = - mdec->y; /* 鼠标y方向与画面符号相反 */
return 1;
}
return -1; /* 应该不可能到这里来 */
}
- 打vc code,输入以下代码并保存为 sheet.c,存放在harib08a文件夹中。
/* 画面叠加处理 */
#include "bootpack.h"
#define SHEET_USE 1
struct SHTCTL *shtctl_init(struct MEMMAN *memman, unsigned char *vram, int xsize, int ysize)
{
struct SHTCTL *ctl;
int i;
ctl = (struct SHTCTL *) memman_alloc_4k(memman, sizeof (struct SHTCTL));
if (ctl == 0) {
goto err;
}
ctl->vram = vram;
ctl->xsize = xsize;
ctl->ysize = ysize;
ctl->top = -1; /* 一个SHEET都没有 */
for (i = 0; i < MAX_SHEETS; i++) {
ctl->sheets0[i].flags = 0; /* 标记为未使用 */
}
err:
return ctl;
}
struct SHEET *sheet_alloc(struct SHTCTL *ctl)
{
struct SHEET *sht;
int i;
for (i = 0; i < MAX_SHEETS; i++) {
if (ctl->sheets0[i].flags == 0) {
sht = &ctl->sheets0[i];
sht->flags = SHEET_USE; /* 标记为正在使用 */
sht->height = -1; /* 隐藏 */
return sht;
}
}
return 0; /* 所有的SHEET都处于正在使用状态 */
}
void sheet_setbuf(struct SHEET *sht, unsigned char *buf, int xsize, int ysize, int col_inv)
{
sht->buf = buf;
sht->bxsize = xsize;
sht->bysize = ysize;
sht->col_inv = col_inv;
return;
}
void sheet_refreshsub(struct SHTCTL *ctl, int vx0, int vy0, int vx1, int vy1)
{
int h, bx, by, vx, vy, bx0, by0, bx1, by1;
unsigned char *buf, c, *vram = ctl->vram;
struct SHEET *sht;
for (h = 0; h <= ctl->top; h++) {
sht = ctl->sheets[h];
buf = sht->buf;
/* 使用vx0~vy1,对bx0~by1进行转换 */
bx0 = vx0 - sht->vx0;
by0 = vy0 - sht->vy0;
bx1 = vx1 - sht->vx0;
by1 = vy1 - sht->vy0;
if (bx0 < 0) { bx0 = 0; }
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++) {
vx = sht->vx0 + bx;
c = buf[by * sht->bxsize + bx];
if (c != sht->col_inv) {
vram[vy * ctl->xsize + vx] = c;
}
}
}
}
return;
}
void sheet_updown(struct SHTCTL *ctl, struct SHEET *sht, int height)
{
int h, old = sht->height; /* 存储设置前的高度信息 */
/* 如果指定的高度过高或过低,则进行修正 */
if (height > ctl->top + 1) {
height = ctl->top + 1;
}
if (height < -1) {
height = -1;
}
sht->height = height; /* 设定高度 */
/* 下面主要是进行sheets[]的重新排列 */
if (old > height) { /* 比以前低 */
if (height >= 0) {
/* 把中间的往上提 */
for (h = old; h > height; h--) {
ctl->sheets[h] = ctl->sheets[h - 1];
ctl->sheets[h]->height = h;
}
ctl->sheets[height] = sht;
} else { /* 隐藏 */
if (ctl->top > old) {
/* 把上面的降下来 */
for (h = old; h < ctl->top; h++) {
ctl->sheets[h] = ctl->sheets[h + 1];
ctl->sheets[h]->height = h;
}
}
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_refreshsub(ctl, sht->vx0, sht->vy0, sht->vx0 + sht->bxsize, sht->vy0 + sht->bysize);
} else if (old < height) { /* 比以前高 */
if (old >= 0) {
/* 把中间的拉下来 */
for (h = old; h < height; h++) {
ctl->sheets[h] = ctl->sheets[h + 1];
ctl->sheets[h]->height = h;
}
ctl->sheets[height] = sht;
} else { /* 由隐藏状态转为显示状态 */
/* 奖已在上面的提上来 */
for (h = ctl->top; h >= height; h--) {
ctl->sheets[h + 1] = ctl->sheets[h];
ctl->sheets[h + 1]->height = h + 1;
}
ctl->sheets[height] = sht;
ctl->top++; /* 由于已显示的图层增加了1个,所以最上面的图层高度增加 */
}
sheet_refreshsub(ctl, sht->vx0, sht->vy0, sht->vx0 + sht->bxsize, sht->vy0 + sht->bysize);
}
return;
}
void sheet_refresh(struct SHTCTL *ctl, struct SHEET *sht, int bx0, int by0, int bx1, int by1)
{
if (sht->height >= 0) { /* 如果正在显示, 则按新图层的信息刷新画面 */
sheet_refreshsub(ctl, sht->vx0 + bx0, sht->vy0 + by0, sht->vx0 + bx1, sht->vy0 + by1);
}
return;
}
void sheet_slide(struct SHTCTL *ctl, struct SHEET *sht, int vx0, int vy0)
{
int old_vx0 = sht->vx0, old_vy0 = sht->vy0;
sht->vx0 = vx0;
sht->vy0 = vy0;
if (sht->height >= 0) { /* 如果正在显示, 则按新图层的信息刷新画面 */
sheet_refreshsub(ctl, old_vx0, old_vy0, old_vx0 + sht->bxsize, old_vy0 + sht->bysize);
sheet_refreshsub(ctl, vx0, vy0, vx0 + sht->bxsize, vy0 + sht->bysize);
}
return;
}
void sheet_free(struct SHTCTL *ctl, struct SHEET *sht)
{
if (sht->height >= 0) {
sheet_updown(ctl, sht, -1); /* 如果牌显示状态,则先设定为隐藏 */
}
sht->flags = 0; /* "未使用"标志 */
return;
}
- 打vc code,输入以下代码并保存为 asmhead.nas,存放在harib08a文件夹中。
; haribote-os boot asm
; TAB=4
BOTPAK EQU 0x00280000 ; bootpack装载处
DSKCAC EQU 0x00100000 ; 磁盘缓存的地方
DSKCAC0 EQU 0x00008000 ; 磁盘高速缓存的场所(实时模式)
; 有关BOOT_INFO
CYLS EQU 0x0ff0 ; 设定启动区
LEDS EQU 0x0ff1
VMODE EQU 0x0ff2 ; 关于颜色数目的信息,颜色的位数
SCRNX EQU 0x0ff4 ; 分辨率的X(screen x)
SCRNY EQU 0x0ff6 ; 分辨率的Y(screen y)
VRAM EQU 0x0ff8 ; 图像缓冲区的开始地址
ORG 0xc200 ; 这个程序要被装载到内存的什么地方呢?
; 画面模式设定
MOV AL,0x13 ; VGA显卡,320x200x8位彩色
MOV AH,0x00
INT 0x10
MOV BYTE [VMODE],8 ; 记录画面模式(C语言参照)
MOV WORD [SCRNX],320
MOV WORD [SCRNY],200
MOV DWORD [VRAM],0x000a0000
; 用BIOS取得键盘各种LED指示灯的状态
MOV AH,0x02
INT 0x16 ; keyboard BIOS
MOV [LEDS],AL
; 使PIC不授受一切中断
; 如果要初始PIC的话,要在AT兼容的规范中,
; 如果不把这家伙放在CLI面前,我偶尔会举起来
; 稍后进行PIC的初始化
MOV AL,0xff
OUT 0x21,AL
NOP ; 如果连续OUT命令的话,可能会有不太好的机型
OUT 0xa1,AL
CLI ; 甚至禁止CPU层面插队
; cpu从1 mb以上的内存,a20gate设定
CALL waitkbdout
MOV AL,0xd1
OUT 0x64,AL
CALL waitkbdout
MOV AL,0xdf ; enable A20
OUT 0x60,AL
CALL waitkbdout
; 保护模式过渡
[INSTRSET "i486p"] ; 用于记述想要使用的486命令
LGDT [GDTR0] ; 暂定GDT设定
MOV EAX,CR0
AND EAX,0x7fffffff ; 使bit31为0(为子禁止寻乎)
OR EAX,0x00000001 ; 使bit0为1(为子保护模式转移)
MOV CR0,EAX
JMP pipelineflush
pipelineflush:
MOV AX,1*8 ; 可读区段32bit
MOV DS,AX
MOV ES,AX
MOV FS,AX
MOV GS,AX
MOV SS,AX
; bootpack的传送
MOV ESI,bootpack ; 传输源
MOV EDI,BOTPAK ; 传输目的地
MOV ECX,512*1024/4
CALL memcpy
; 顺便磁盘数据也向原来的位置传送
; 首先从引导扇区
MOV ESI,0x7c00 ; 传输源
MOV EDI,DSKCAC ; 传输目的地
MOV ECX,512/4
CALL memcpy
; 剩下的全部
MOV ESI,DSKCAC0+512 ; 传输源
MOV EDI,DSKCAC+512 ; 传输目的地
MOV ECX,0
MOV CL,BYTE [CYLS]
IMUL ECX,512*18*2/4 ; 从柱面数转换成字节数 /4
SUB ECX,512/4 ; 通过IPL减去
CALL memcpy
; 我们已经完成了需要使用asmhead 进行的所有操作
; 放到bootpack中
; 启动bootpack
MOV EBX,BOTPAK
MOV ECX,[EBX+16]
ADD ECX,3 ; ECX += 3;
SHR ECX,2 ; ECX /= 4;
JZ skip ; 无需转移
MOV ESI,[EBX+20] ; 传输源
ADD ESI,EBX
MOV EDI,[EBX+12] ; 传输目的地
CALL memcpy
skip:
MOV ESP,[EBX+12] ; 堆栈初始值
JMP DWORD 2*8:0x0000001b
waitkbdout:
IN AL,0x64
AND AL,0x02
JNZ waitkbdout ; 如果AND的结果不为0,请跳转至waitkbdou
RET
memcpy:
MOV EAX,[ESI]
ADD ESI,4
MOV [EDI],EAX
ADD EDI,4
SUB ECX,1
JNZ memcpy ; 如果减法不为0,则返回memcpy
RET
; memcpy也可以用字符串指令编写,除非你忘记了地址大小写前缀
ALIGNB 16
GDT0:
RESB 8 ; 空选择器
DW 0xffff,0x0000,0x9200,0x00cf ; 读/定段32bit
DW 0xffff,0x0000,0x9a28,0x0047 ; 可执行段32bit(用于bootpack)
DW 0
GDTR0:
DW 8*3-1
DD GDT0
ALIGNB 16
bootpack:
- 打开 VC code 创建 ipl10.nas 文件,输入以下代码,也存放的harib08a中。
; haribote-ipl
; TAB=4
CYLS EQU 10 ; 要读取到什么程度
ORG 0x7c00 ; 启动装载程序
; 以下记述用于标准FAT12格式软盘
JMP entry
DB 0x90
DB "HARIBOTE" ; 磁盘名称(可以是任意字符串)
DW 512 ; 每个扇区的大小(必须是512)
DB 1 ; 簇的大小(必须为一个扇区)
DW 1 ; FAT12的起始位置(一般从第一个扇区开始
DB 2 ; FAT的个数(必须为2)
DW 224 ; 根目录的大小(一般设成224项)
DW 2880 ; 该磁盘的大小(必须是2880扇区)
DB 0xf0 ; 该磁盘的种类(必须是0xf0
DW 9 ; FAt的长度(必须是9扇区)
DW 18 ; 一个磁道有几个扇区(必须是18)
DW 2 ; 磁头数(必须是2)
DD 0 ; 不使用分区,必须是0
DD 2880 ; 磁盘大小
DB 0,0,0x29 ; 意义不明固定
DD 0xffffffff ; (可能是)卷标号码
DB "HARIBOTEOS " ; 磁盘的名称(11字节)
DB "FAT12 " ; 磁盘格式名称(8字节)
RESB 18 ; 先空出18字节
; 程序主体
entry:
MOV AX,0 ; 初始化寄存器
MOV SS,AX
MOV SP,0x7c00
MOV DS,AX
; 读磁盘
MOV AX,0x0820
MOV ES,AX
MOV CH,0 ; 柱面 0
MOV DH,0 ; 磁头 0
MOV CL,2 ; 扇区 2
readloop:
MOV SI,0 ; 记录失败次数的寄存器
retry:
MOV AH,0x02 ; AH=0x02 : 读入磁盘
MOV AL,1 ; 1 个扇区
MOV BX,0
MOV DL,0x00 ; A 驱动器
INT 0x13 ; 调用磁盘BIOS
JNC next ; 没出错时跳转到next
ADD SI,1 ; SI 加 1
CMP SI,5 ; 比较 SI 与 5
JAE error ; SI >= 5 时,跳转到error
MOV AH,0x00
MOV DL,0x00 ; A 驱动器
INT 0x13 ; 重置驱动器
JMP retry
next:
MOV AX,ES ; 把内存地址后移0x200
ADD AX,0x0020
MOV ES,AX ; 因为没有 ADD ES,0x020 指令,所以这里稍微绕个弯
ADD CL,1 ; CL 加 1
CMP CL,18 ; 比较 CL 与 18
JBE readloop ; 如果 CL <= 18,则跳转至readloop
MOV CL,1
ADD DH,1
CMP DH,2
JB readloop ; 如果 DH < 2, 则跳转到readloop
MOV DH,0
ADD CH,1
CMP CH,CYLS
JB readloop ; 如果 CH < CYLS,则跳转至readloop
; 因为看完了实行haribote.sys
MOV [0x0ff0],CH ; IPL读到什么地方结束
JMP 0xc200
error:
MOV SI,msg
putloop:
MOV AL,[SI]
ADD SI,1 ; SI 加 1
CMP AL,0
JE fin
MOV AH,0x0e ; 显示一个文字
MOV BX,15 ; 指定字符颜色
INT 0x10 ; 调用显卡BIOS
JMP putloop
fin:
HLT ; 让CPu停止,等待指令
JMP fin ; 无限循环
msg:
DB 0x0a, 0x0a ; 换行两次
DB "load error"
DB 0x0a ; 换行
DB 0
RESB 0x7dfe-$ ; 重复0x00一直到0x7dfe
DB 0x55, 0xaa
- 打开记事本,输入以下代码,另存为 make.bat, 同样放到harib08a中。
..\z_tools\make.exe %1 %2 %3 %4 %5 %6 %7 %8 %9
- 创建 Makefile,并输入以下代码并存放到harib08a中。
OBJS_BOOTPACK = bootpack.obj naskfunc.obj hankaku.obj graphic.obj dsctbl.obj \
int.obj fifo.obj keyboard.obj mouse.obj memory.obj
TOOLPATH = ../z_tools/
INCPATH = ../z_tools/haribote/
MAKE = $(TOOLPATH)make.exe -r
NASK = $(TOOLPATH)nask.exe
CC1 = $(TOOLPATH)cc1.exe -I$(INCPATH) -Os -Wall -quiet
GAS2NASK = $(TOOLPATH)gas2nask.exe -a
OBJ2BIM = $(TOOLPATH)obj2bim.exe
MAKEFONT = $(TOOLPATH)makefont.exe
BIN2OBJ = $(TOOLPATH)bin2obj.exe
BIM2HRB = $(TOOLPATH)bim2hrb.exe
RULEFILE = $(TOOLPATH)haribote/haribote.rul
EDIMG = $(TOOLPATH)edimg.exe
IMGTOL = $(TOOLPATH)imgtol.com
COPY = copy
DEL = del
# 默认
default :
$(MAKE) img
# 文件生成规则
ipl10.bin : ipl10.nas Makefile
$(NASK) ipl10.nas ipl10.bin ipl10.lst
asmhead.bin : asmhead.nas Makefile
$(NASK) asmhead.nas asmhead.bin asmhead.lst
hankaku.bin : hankaku.txt Makefile
$(MAKEFONT) hankaku.txt hankaku.bin
hankaku.obj : hankaku.bin Makefile
$(BIN2OBJ) hankaku.bin hankaku.obj _hankaku
bootpack.bim : $(OBJS_BOOTPACK) Makefile
$(OBJ2BIM) @$(RULEFILE) out:bootpack.bim stack:3136k map:bootpack.map \
$(OBJS_BOOTPACK)
# 3MB+64KB=3136KB
bootpack.hrb : bootpack.bim Makefile
$(BIM2HRB) bootpack.bim bootpack.hrb 0
haribote.sys : asmhead.bin bootpack.hrb Makefile
copy /B asmhead.bin+bootpack.hrb haribote.sys
haribote.img : ipl10.bin haribote.sys Makefile
$(EDIMG) imgin:../z_tools/fdimg0at.tek \
wbinimg src:ipl10.bin len:512 from:0 to:0 \
copy from:haribote.sys to:@: \
imgout:haribote.img
# 一般规则
%.gas : %.c bootpack.h Makefile
$(CC1) -o $*.gas $*.c
%.nas : %.gas Makefile
$(GAS2NASK) $*.gas $*.nas
%.obj : %.nas Makefile
$(NASK) $*.nas $*.obj $*.lst
# 命令
img :
$(MAKE) haribote.img
run :
$(MAKE) img
$(COPY) haribote.img ..\z_tools\qemu\fdimage0.bin
$(MAKE) -C ../z_tools/qemu
install :
$(MAKE) img
$(IMGTOL) w a: haribote.img
clean :
-$(DEL) *.bin
-$(DEL) *.lst
-$(DEL) *.obj
-$(DEL) bootpack.map
-$(DEL) bootpack.bim
-$(DEL) bootpack.hrb
-$(DEL) haribote.sys
src_only :
$(MAKE) clean
-$(DEL) haribote.img
- 打开记事本,复制以下内容并保存为 hankaku.txt,且存放在harib08a中;ps:建议这一段代码直接复制不要看。
这段代码过多,无法贴出来,请在网盘资源复制,projects/05_day/harib02f中hankaku.txt
编译及运行
-
双击 !cons_nt.bat,并在打开的命令行中输入 make run
-
VMware中运行结果,如下图
ps: 结果就是这样,因为本次实验的目的是鼠标显示问题 (harib08a),可以试着移动鼠标看看,一到边界就变成这样,下次是画面外的支持,以后会有更精彩。敬请期待!
好的今天到这里harib08a就张结束了,请大家多多支持!!!