Add 15 day code

15_day/!cons_9x.bat

@@ -0,0 +1 @@
+command

15_day/!cons_nt.bat

@@ -0,0 +1 @@
+cmd.exe

15_day/Makefile

@@ -0,0 +1,93 @@
+OBJS_BOOTPACK = bootpack.obj naskfunc.obj hankaku.obj graphic.obj dsctbl.obj \
+		int.obj fifo.obj keyboard.obj mouse.obj memory.obj sheet.obj timer.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
+
+# 默认动作
+
+default :
+	$(MAKE) img
+
+# 镜像文件生成
+
+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
+
+# 其他指令
+
+%.gas : %.c bootpack.h Makefile
+	$(CC1) -o $*.gas $*.c
+
+%.nas : %.gas Makefile
+	$(GAS2NASK) $*.gas $*.nas
+
+%.obj : %.nas Makefile
+	$(NASK) $*.nas $*.obj $*.lst
+
+# 运行程序
+
+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

15_day/asmhead.nas

@@ -0,0 +1,202 @@
+; haribote-os boot asm
+; TAB=4
+
+[INSTRSET "i486p"]
+
+VBEMODE	EQU		0x105			; 1024 x  768 x 8bit 彩色
+; 显示模式
+;	0x100 :  640 x  400 x 8bit 彩色
+;	0x101 :  640 x  480 x 8bit 彩色
+;	0x103 :  800 x  600 x 8bit 彩色
+;	0x105 : 1024 x  768 x 8bit 彩色
+;	0x107 : 1280 x 1024 x 8bit 彩色
+
+BOTPAK	EQU		0x00280000		; 加载bootpack
+DSKCAC	EQU		0x00100000		; 磁盘缓存的位置
+DSKCAC0	EQU		0x00008000		; 磁盘缓存的位置（实模式）
+
+; BOOT_INFO 相关
+CYLS	EQU		0x0ff0			; 引导扇区设置
+LEDS	EQU		0x0ff1
+VMODE	EQU		0x0ff2			; 关于颜色的信息
+SCRNX	EQU		0x0ff4			; 分辨率X
+SCRNY	EQU		0x0ff6			; 分辨率Y
+VRAM	EQU		0x0ff8			; 图像缓冲区的起始地址
+
+		ORG		0xc200			;  这个的程序要被装载的内存地址
+
+; 确认VBE是否存在
+
+		MOV		AX,0x9000
+		MOV		ES,AX
+		MOV		DI,0
+		MOV		AX,0x4f00
+		INT		0x10
+		CMP		AX,0x004f
+		JNE		scrn320
+
+; 检查VBE的版本
+
+		MOV		AX,[ES:DI+4]
+		CMP		AX,0x0200
+		JB		scrn320			; if (AX < 0x0200) goto scrn320
+
+; 取得画面模式信息
+
+		MOV		CX,VBEMODE
+		MOV		AX,0x4f01
+		INT		0x10
+		CMP		AX,0x004f
+		JNE		scrn320
+
+; 画面模式信息的确认
+		CMP		BYTE [ES:DI+0x19],8		;颜色数必须为8
+		JNE		scrn320
+		CMP		BYTE [ES:DI+0x1b],4		;颜色的指定方法必须为4(4是调色板模式)
+		JNE		scrn320
+		MOV		AX,[ES:DI+0x00]				;模式属性bit7不是1就不能加上0x4000
+		AND		AX,0x0080
+		JZ		scrn320					; 模式属性的bit7是0，所以放弃
+
+;	画面设置
+
+		MOV		BX,VBEMODE+0x4000
+		MOV		AX,0x4f02
+		INT		0x10
+		MOV		BYTE [VMODE],8	; 屏幕的模式（参考C语言的引用）
+		MOV		AX,[ES:DI+0x12]
+		MOV		[SCRNX],AX
+		MOV		AX,[ES:DI+0x14]
+		MOV		[SCRNY],AX
+		MOV		EAX,[ES:DI+0x28] ;VRAM的地址
+		MOV		[VRAM],EAX
+		JMP		keystatus
+
+scrn320:
+		MOV		AL,0x13						; VGA图、320x200x8bit彩色
+		MOV		AH,0x00
+		INT		0x10
+		MOV		BYTE [VMODE],8		; 记下画面模式（参考C语言）
+		MOV		WORD [SCRNX],320
+		MOV		WORD [SCRNY],200
+		MOV		DWORD [VRAM],0x000a0000
+
+;	通过 BIOS 获取指示灯状态
+
+keystatus:
+		MOV		AH,0x02
+		INT		0x16 			; keyboard BIOS
+		MOV		[LEDS],AL
+
+;	PIC关闭一切中断
+;	根据AT兼容机的规格，如果要初始化PIC，
+;	必须在CLI之前进行，否则有时会挂起。
+;	随后进行PIC的初始化。
+
+		MOV		AL,0xff
+		OUT		0x21,AL
+		NOP						; 如果连续执行OUT指令，有些机种会无法正常运行
+		OUT		0xa1,AL
+
+		CLI						; 禁止CPU级别的中断
+
+;	为了让CPU能够访问1MB以上的内存空间，设定A20GATE
+
+		CALL	waitkbdout
+		MOV		AL,0xd1
+		OUT		0x64,AL
+		CALL	waitkbdout
+		MOV		AL,0xdf			; enable A20
+		OUT		0x60,AL
+		CALL	waitkbdout
+
+;	切换到保护模式
+
+[INSTRSET "i486p"]				; 说明使用486指令
+
+		LGDT	[GDTR0]			; 设置临时GDT
+		MOV		EAX,CR0
+		AND		EAX,0x7fffffff	; 设bit31为0（禁用分页）
+		OR		EAX,0x00000001	; bit0到1转换（保护模式过渡）
+		MOV		CR0,EAX
+		JMP		pipelineflush
+pipelineflush:
+		MOV		AX,1*8			;  可读写的段 32bit
+		MOV		DS,AX
+		MOV		ES,AX
+		MOV		FS,AX
+		MOV		GS,AX
+		MOV		SS,AX
+
+; bootpack传递
+
+		MOV		ESI,bootpack	; 转送源
+		MOV		EDI,BOTPAK		; 转送目标
+		MOV		ECX,512*1024/4
+		CALL	memcpy
+
+; 磁盘数据最终转送到它本来的位置去
+; 首先从启动扇区开始
+
+		MOV		ESI,0x7c00		; 转送源
+		MOV		EDI,DSKCAC		; 转送目标
+		MOV		ECX,512/4
+		CALL	memcpy
+
+; 剩余的全部
+
+		MOV		ESI,DSKCAC0+512	; 转送源
+		MOV		EDI,DSKCAC+512	; 转送源目标
+		MOV		ECX,0
+		MOV		CL,BYTE [CYLS]
+		IMUL	ECX,512*18*2/4	; 从柱面数变换为字节数/4
+		SUB		ECX,512/4		; 减去 IPL 偏移量
+		CALL	memcpy
+
+; 必须由asmhead来完成的工作，至此全部完毕
+; 以后就交由bootpack来完成
+
+; bootpack启动
+
+		MOV		EBX,BOTPAK
+		MOV		ECX,[EBX+16]
+		ADD		ECX,3			; ECX += 3;
+		SHR		ECX,2			; ECX /= 4;
+		JZ		skip			; 没有要转送的东西时
+		MOV		ESI,[EBX+20]	; 转送源
+		ADD		ESI,EBX
+		MOV		EDI,[EBX+12]	; 转送目标
+		CALL	memcpy
+skip:
+		MOV		ESP,[EBX+12]	; 堆栈的初始化
+		JMP		DWORD 2*8:0x0000001b
+
+waitkbdout:
+		IN		 AL,0x64
+		AND		 AL,0x02
+		JNZ		waitkbdout	; AND的结果如果不是0，就跳到waitkbdout
+		RET
+
+memcpy:
+		MOV		EAX,[ESI]
+		ADD		ESI,4
+		MOV		[EDI],EAX
+		ADD		EDI,4
+		SUB		ECX,1
+		JNZ		memcpy			; 减法运算的结果如果不是0，就跳转到memcpy
+		RET
+; memcpy地址前缀大小
+
+		ALIGNB	16
+GDT0:
+		RESB	8				; 初始值
+		DW		0xffff,0x0000,0x9200,0x00cf	; 可以读写的段（segment）32bit
+		DW		0xffff,0x0000,0x9a28,0x0047	; 可执行的文件的32bit寄存器（bootpack用）
+
+		DW		0
+GDTR0:
+		DW		8*3-1
+		DD		GDT0
+
+		ALIGNB	16
+bootpack:

15_day/bootpack.c

@@ -0,0 +1,240 @@
+/* bootpack*/
+
+#include "bootpack.h"
+#include <stdio.h>
+
+void make_window8(unsigned char *buf, int xsize, int ysize, char *title);
+void putfonts8_asc_sht(struct SHEET *sht, int x, int y, int c, int b, char *s, int l);
+void make_textbox8(struct SHEET *sht, int x0, int y0, int sx, int sy, int c);
+
+void HariMain(void)
+{
+	struct BOOTINFO *binfo = (struct BOOTINFO *) ADR_BOOTINFO;
+	struct FIFO32 fifo;
+	char s[40];
+	int fifobuf[128];
+	struct TIMER *timer, *timer2, *timer3;
+	int mx, my, i, cursor_x, cursor_c;
+	unsigned int memtotal;
+	struct MOUSE_DEC mdec;
+	struct MEMMAN *memman = (struct MEMMAN *) MEMMAN_ADDR;
+	struct SHTCTL *shtctl;
+	struct SHEET *sht_back, *sht_mouse, *sht_win;
+	unsigned char *buf_back, buf_mouse[256], *buf_win;
+	static char keytable[0x54] = {
+		0, 0, '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '-', '^', 0, 0,
+		'Q', 'W', 'E', 'R', 'T', 'Y', 'U', 'I', 'O', 'P', '@', '[', 0, 0, 'A', 'S',
+		'D', 'F', 'G', 'H', 'J', 'K', 'L', ';', ':', 0, 0, ']', 'Z', 'X', 'C', 'V',
+		'B', 'N', 'M', ',', '.', '/', 0, '*', 0, ' ', 0, 0, 0, 0, 0, 0,
+		0, 0, 0, 0, 0, 0, 0, '7', '8', '9', '-', '4', '5', '6', '+', '1',
+		'2', '3', '0', '.'
+	};
+
+	init_gdtidt();
+	init_pic();
+	io_sti(); /* IDT/PIC的初始化已经完成，于是开放CPU的中断 */
+	fifo32_init(&fifo, 128, fifobuf);
+	init_pit();
+	init_keyboard(&fifo, 256);
+	enable_mouse(&fifo, 512, &mdec);
+	io_out8(PIC0_IMR, 0xf8); /* 设定PIT和PIC1以及键盘为许可(11111000) */
+	io_out8(PIC1_IMR, 0xef); /* 开放鼠标中断(11101111) */
+
+	timer = timer_alloc();
+	timer_init(timer, &fifo, 10);
+	timer_settime(timer, 1000);
+	timer2 = timer_alloc();
+	timer_init(timer2, &fifo, 3);
+	timer_settime(timer2, 300);
+	timer3 = timer_alloc();
+	timer_init(timer3, &fifo, 1);
+	timer_settime(timer3, 50);
+
+	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);
+	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);
+	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 */
+	init_screen8(buf_back, binfo->scrnx, binfo->scrny);
+	init_mouse_cursor8(buf_mouse, 99); /* 背景色号99 */
+	make_window8(buf_win, 160, 52, "window");
+	make_textbox8(sht_win, 8, 28, 144, 16, COL8_FFFFFF);
+	cursor_x = 8;
+	cursor_c = COL8_FFFFFF;
+	sheet_slide(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(sht_mouse, mx, my);
+	sheet_slide(sht_win, 80, 72);
+	sheet_updown(sht_back,  0);
+	sheet_updown(sht_win,   1);
+	sheet_updown(sht_mouse, 2);
+	sprintf(s, "(%3d, %3d)", mx, my);
+	putfonts8_asc_sht(sht_back, 0, 0, COL8_FFFFFF, COL8_008484, s, 10);
+	sprintf(s, "memory %dMB   free : %dKB",
+			memtotal / (1024 * 1024), memman_total(memman) / 1024);
+	putfonts8_asc_sht(sht_back, 0, 32, COL8_FFFFFF, COL8_008484, s, 40);
+
+	for (;;) {
+		io_cli();
+		if (fifo32_status(&fifo) == 0) {
+			io_stihlt();
+		} else {
+			i = fifo32_get(&fifo);
+			io_sti();
+			if (256 <= i && i <= 511) { /* 键盘数据*/
+				sprintf(s, "%02X", i - 256);
+				putfonts8_asc_sht(sht_back, 0, 16, COL8_FFFFFF, COL8_008484, s, 2);
+				if (i < 0x54 + 256) {
+					if (keytable[i - 256] != 0 && cursor_x < 144) {
+						s[0] = keytable[i - 256];
+						s[1] = 0;
+						putfonts8_asc_sht(sht_win, cursor_x, 28, COL8_000000, COL8_FFFFFF, s, 1);
+						cursor_x += 8;
+					}
+				}
+				if (i == 256 + 0x0e && cursor_x > 8) { /* 退格键 */
+					/* 用空格键把光标消去后，后移1次光标 */
+					putfonts8_asc_sht(sht_win, cursor_x, 28, COL8_000000, COL8_FFFFFF, " ", 1);
+					cursor_x -= 8;
+				}
+				/* 光标再显示 */
+				boxfill8(sht_win->buf, sht_win->bxsize, cursor_c, cursor_x, 28, cursor_x + 7, 43);
+				sheet_refresh(sht_win, cursor_x, 28, cursor_x + 8, 44);
+			} else if (512 <= i && i <= 767) { /* 鼠标数据*/
+				if (mouse_decode(&mdec, i - 512) != 0) {
+					/* 已经收集了3字节的数据，所以显示出来 */
+					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';
+					}
+					putfonts8_asc_sht(sht_back, 32, 16, COL8_FFFFFF, COL8_008484, s, 15);
+					/* 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);
+					putfonts8_asc_sht(sht_back, 0, 0, COL8_FFFFFF, COL8_008484, s, 10);
+					sheet_slide(sht_mouse, mx, my);/* 包含sheet_refresh含sheet_refresh */
+					if ((mdec.btn & 0x01) != 0) { /* 按下左键、移动sht_win */
+						sheet_slide(sht_win, mx - 80, my - 8);
+					}
+				}
+			} else if (i == 10) { /* 10秒定时器 */
+				putfonts8_asc_sht(sht_back, 0, 64, COL8_FFFFFF, COL8_008484, "10[sec]", 7);
+			} else if (i == 3) { /* 3秒定时器 */
+				putfonts8_asc_sht(sht_back, 0, 80, COL8_FFFFFF, COL8_008484, "3[sec]", 6);
+			} else if (i <= 1) { /* 光标用定时器*/
+				if (i != 0) {
+					timer_init(timer3, &fifo, 0); /* 下面设定0 */
+					cursor_c = COL8_000000;
+				} else {
+					timer_init(timer3, &fifo, 1); /* 下面设定1 */
+					cursor_c = COL8_FFFFFF;
+				}
+				timer_settime(timer3, 50);
+				boxfill8(sht_win->buf, sht_win->bxsize, cursor_c, cursor_x, 28, cursor_x + 7, 43);
+				sheet_refresh(sht_win, cursor_x, 28, cursor_x + 8, 44);
+			}
+		}
+	}
+}
+
+void make_window8(unsigned char *buf, int xsize, int ysize, char *title)
+{
+	static char closebtn[14][16] = {
+		"OOOOOOOOOOOOOOO@",
+		"OQQQQQQQQQQQQQ$@",
+		"OQQQQQQQQQQQQQ$@",
+		"OQQQ@@QQQQ@@QQ$@",
+		"OQQQQ@@QQ@@QQQ$@",
+		"OQQQQQ@@@@QQQQ$@",
+		"OQQQQQQ@@QQQQQ$@",
+		"OQQQQQ@@@@QQQQ$@",
+		"OQQQQ@@QQ@@QQQ$@",
+		"OQQQ@@QQQQ@@QQ$@",
+		"OQQQQQQQQQQQQQ$@",
+		"OQQQQQQQQQQQQQ$@",
+		"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);
+	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];
+			if (c == '@') {
+				c = COL8_000000;
+			} else if (c == '$') {
+				c = COL8_848484;
+			} else if (c == 'Q') {
+				c = COL8_C6C6C6;
+			} else {
+				c = COL8_FFFFFF;
+			}
+			buf[(5 + y) * xsize + (xsize - 21 + x)] = c;
+		}
+	}
+	return;
+}
+
+void putfonts8_asc_sht(struct SHEET *sht, int x, int y, int c, int b, char *s, int l)
+{
+	boxfill8(sht->buf, sht->bxsize, b, x, y, x + l * 8 - 1, y + 15);
+	putfonts8_asc(sht->buf, sht->bxsize, x, y, c, s);
+	sheet_refresh(sht, x, y, x + l * 8, y + 16);
+	return;
+}
+
+void make_textbox8(struct SHEET *sht, int x0, int y0, int sx, int sy, int c)
+{
+	int x1 = x0 + sx, y1 = y0 + sy;
+	boxfill8(sht->buf, sht->bxsize, COL8_848484, x0 - 2, y0 - 3, x1 + 1, y0 - 3);
+	boxfill8(sht->buf, sht->bxsize, COL8_848484, x0 - 3, y0 - 3, x0 - 3, y1 + 1);
+	boxfill8(sht->buf, sht->bxsize, COL8_FFFFFF, x0 - 3, y1 + 2, x1 + 1, y1 + 2);
+	boxfill8(sht->buf, sht->bxsize, COL8_FFFFFF, x1 + 2, y0 - 3, x1 + 2, y1 + 2);
+	boxfill8(sht->buf, sht->bxsize, COL8_000000, x0 - 1, y0 - 2, x1 + 0, y0 - 2);
+	boxfill8(sht->buf, sht->bxsize, COL8_000000, x0 - 2, y0 - 2, x0 - 2, y1 + 0);
+	boxfill8(sht->buf, sht->bxsize, COL8_C6C6C6, x0 - 2, y1 + 1, x1 + 0, y1 + 1);
+	boxfill8(sht->buf, sht->bxsize, COL8_C6C6C6, x1 + 1, y0 - 2, x1 + 1, y1 + 1);
+	boxfill8(sht->buf, sht->bxsize, c, x0 - 1, y0 - 1, x1 + 0, y1 + 0);
+	return;
+}

15_day/bootpack.h

@@ -0,0 +1,190 @@
+/* asmhead.nas */
+struct BOOTINFO { /* 0x0ff0-0x0fff */
+	char cyls; /* 启动区读磁盘读到此为止 */
+	char leds; /* 启动时键盘的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_inthandler20(void);
+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 FIFO32 {
+	int *buf;
+	int p, q, size, free, flags;
+};
+void fifo32_init(struct FIFO32 *fifo, int size, int *buf);
+int fifo32_put(struct FIFO32 *fifo, int data);
+int fifo32_get(struct FIFO32 *fifo);
+int fifo32_status(struct FIFO32 *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(struct FIFO32 *fifo, int data0);
+#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 FIFO32 *fifo, int data0, struct MOUSE_DEC *mdec);
+int mouse_decode(struct MOUSE_DEC *mdec, unsigned char dat);
+
+/* 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
+#define SHEET_USE  1
+
+struct SHEET {
+	unsigned char *buf;
+	int bxsize, bysize, vx0, vy0, col_inv, height, flags;
+	struct SHTCTL *ctl;
+};
+
+struct SHTCTL {
+	unsigned char *vram, *map;
+	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 SHEET *sht, int height);
+void sheet_refresh(struct SHEET *sht, int bx0, int by0, int bx1, int by1);
+void sheet_slide(struct SHEET *sht, int vx0, int vy0);
+void sheet_free(struct SHEET *sht);
+
+/* timer.c */
+#define MAX_TIMER 500
+struct TIMER {
+	struct TIMER *next;
+	unsigned int timeout, flags;
+	struct FIFO32 *fifo;
+	int data;
+};
+struct TIMERCTL {
+	unsigned int count, next;
+	struct TIMER *t0;
+	struct TIMER timers0[MAX_TIMER];
+};
+extern struct TIMERCTL timerctl;
+
+void init_pit(void);
+struct TIMER *timer_alloc(void);
+void timer_free(struct TIMER *timer);
+void timer_init(struct TIMER *timer, struct FIFO32 *fifo, int data);
+void timer_settime(struct TIMER *timer, unsigned int timeout);
+void inthandler20(int *esp);
+

15_day/dsctbl.c

@@ -0,0 +1,57 @@
+/* GDT、IDT、descriptor table 关系处理 */
+
+#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设置*/
+	set_gatedesc(idt + 0x20, (int) asm_inthandler20, 2 * 8, AR_INTGATE32);
+	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;
+}

15_day/fifo.c

@@ -0,0 +1,57 @@
+/* FIFO */
+
+#include "bootpack.h"
+
+#define FLAGS_OVERRUN		0x0001
+
+void fifo32_init(struct FIFO32 *fifo, int size, int *buf)
+/* FIFO缓冲区的初始化*/
+{
+	fifo->size = size;
+	fifo->buf = buf;
+	fifo->free = size; /*空*/
+	fifo->flags = 0;
+	fifo->p = 0; /*写入位置*/
+	fifo->q = 0; /*读取位置*/
+	return;
+}
+
+int fifo32_put(struct FIFO32 *fifo, int data)
+/*给FIFO发送数据并储存在FIFO中*/
+{
+	if (fifo->free == 0) {
+		/*没有空余空间，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 fifo32_get(struct FIFO32 *fifo)
+/*从FIFO取得一个数据*/
+{
+	int data;
+	if (fifo->free == fifo->size) {
+	/*当缓冲区为空的情况下返回-1*/
+		return -1;
+	}
+	data = fifo->buf[fifo->q];
+	fifo->q++;
+	if (fifo->q == fifo->size) {
+		fifo->q = 0;
+	}
+	fifo->free++;
+	return data;
+}
+
+int fifo32_status(struct FIFO32 *fifo)
+/*报告已经存储了多少数据*/
+{
+	return fifo->size - fifo->free;
+}

15_day/graphic.c

@@ -0,0 +1,157 @@
+/* 关于绘图部分的处理 */
+
+#include "bootpack.h"
+
+void init_palette(void)
+{
+	static unsigned char table_rgb[16 * 3] = {
+		0x00, 0x00, 0x00,	/*  0:黑 */
+		0xff, 0x00, 0x00,	/*  1:梁红 */
+		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, 0xff, 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 /* data */;
+	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];
+	/* C语言中，字符串都是以0x00结尾 */
+	for (; *s != 0x00; s++) {
+		putfont8(vram, xsize, x, y, c, hankaku + *s * 16);
+		x += 8;
+	}
+	return;
+}
+
+void init_mouse_cursor8(char *mouse, char bc)
+/* 鼠标的数据准备（16x16） */
+{
+	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;
+}

15_day/int.c

@@ -0,0 +1,37 @@
+/*初始化关系 */
+
+#include "bootpack.h"
+#include <stdio.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;
+}
+
+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 */
+/* 这个中断只是接收，不执行任何操作 */
+/* 为什么不处理？
+	→  因为这个中断可能是电气噪声引发的、只是处理一些重要的情况。*/
+{
+	io_out8(PIC0_OCW2, 0x67); /* 通知PIC的IRQ-07（参考7-1） */
+	return;
+}

15_day/ipl10.nas

@@ -0,0 +1,109 @@
+; haribote-ipl
+; TAB=4
+
+CYLS	EQU		10				; 声明CYLS=10
+
+		ORG		0x7c00			; 指明程序装载地址
+
+; 标准FAT12格式软盘专用的代码 Stand FAT12 format floppy code
+
+		JMP		entry
+		DB		0x90
+		DB		"HARIBOTE"		; 启动扇区名称（8字节）
+		DW		512				; 每个扇区（sector）大小（必须512字节）
+		DB		1				; 簇（cluster）大小（必须为1个扇区）
+		DW		1				; FAT起始位置（一般为第一个扇区）
+		DB		2				; FAT个数（必须为2）
+		DW		224				; 根目录大小（一般为224项）
+		DW		2880			; 该磁盘大小（必须为2880扇区1440*1024/512）
+		DB		0xf0			; 磁盘类型（必须为0xf0）
+		DW		9				; FAT的长度（必??9扇区）
+		DW		18				; 一个磁道（track）有几个扇区（必须为18）
+		DW		2				; 磁头数（必??2）
+		DD		0				; 不使用分区，必须是0
+		DD		2880			; 重写一次磁盘大小
+		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（必须为11字?，不足填空格）
+		DB		"FAT12   "		; 磁盘格式名称（必??8字?，不足填空格）
+		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
+
+; 读取磁盘
+
+		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			; 没出错则跳转到fin
+		ADD		SI,1			; 往SI加1
+		CMP		SI,5			; 比较SI与5
+		JAE		error			; SI >= 5 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（512/16十六进制转换）
+		ADD		AX,0x0020
+		MOV		ES,AX			; ADD ES,0x020因为没有ADD ES，只能通过AX进行
+		ADD		CL,1			; 往CL里面加1
+		CMP		CL,18			; 比较CL与18
+		JBE		readloop		; CL <= 18 跳转到readloop
+		MOV		CL,1
+		ADD		DH,1
+		CMP		DH,2
+		JB		readloop		; DH < 2 跳转到readloop
+		MOV		DH,0
+		ADD		CH,1
+		CMP		CH,CYLS
+		JB		readloop		; CH < CYLS 跳转到readloop
+
+; 读取完毕，跳转到haribote.sys执行！
+		MOV		[0x0ff0],CH		; IPLがどこまで読んだのかをメモ
+		JMP		0xc200
+
+error:
+		MOV		SI,msg
+
+putloop:
+		MOV		AL,[SI]
+		ADD		SI,1			; 给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-$		; 填写0x00直到0x001fe
+
+		DB		0x55, 0xaa

15_day/keyboard.c

@@ -0,0 +1,44 @@
+/* 键盘控制代码 */
+
+#include "bootpack.h"
+
+struct FIFO32 *keyfifo;
+int keydata0;
+
+void inthandler21(int *esp)
+{
+	int data;
+	io_out8(PIC0_OCW2, 0x61); /* 把IRQ-01接收信号结束的信息通知给PIC */
+	data = io_in8(PORT_KEYDAT);
+	fifo32_put(keyfifo, data + keydata0);
+	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(struct FIFO32 *fifo, int data0)
+{
+	/* 将FIFO缓冲区的信息保存到全局变量里 */
+	keyfifo = fifo;
+	keydata0 = data0;
+	/* 键盘控制器的初始化 */
+	wait_KBC_sendready();
+	io_out8(PORT_KEYCMD, KEYCMD_WRITE_MODE);
+	wait_KBC_sendready();
+	io_out8(PORT_KEYDAT, KBC_MODE);
+	return;
+}

15_day/make.bat

@@ -0,0 +1 @@
+..\z_tools\make.exe %1 %2 %3 %4 %5 %6 %7 %8 %9

15_day/memory.c

@@ -0,0 +1,162 @@
+/* <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>֌W */
+
+#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; /* 释放失败的内存的大小总和 */
+	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合计 */
+{
+	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[]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) {
+		/* 前面有可用内存 */
+		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;
+}

15_day/mouse.c

@@ -0,0 +1,76 @@
+/* 鼠标控制代码 */
+
+#include "bootpack.h"
+
+struct FIFO32 *mousefifo;
+int mousedata0;
+
+void inthandler2c(int *esp)
+/* 来自PS/2鼠标的中断 */
+{
+	int data;
+	io_out8(PIC1_OCW2, 0x64); /* 把IRQ-12接收信号结束的信息通知给PIC1 */
+	io_out8(PIC0_OCW2, 0x62); /* 把IRQ-02接收信号结束的信息通知给PIC0 */
+	data = io_in8(PORT_KEYDAT);
+	fifo32_put(mousefifo, data + mousedata0);
+	return;
+}
+
+#define KEYCMD_SENDTO_MOUSE   0xd4
+#define MOUSECMD_ENABLE     0xf4
+
+void enable_mouse(struct FIFO32 *fifo, int data0, struct MOUSE_DEC *mdec)
+{
+	/* 将FIFO缓冲区的信息保存到全局变量里 */
+	mousefifo = fifo;
+	mousedata0 = data0;
+	/* 鼠标有效 */
+	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)会被发送*/
+	mdec->phase = 0; /* 等待鼠标的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 */
+		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) {
+		/* 等待鼠标第二字节的阶段 */
+		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; /* 鼠标的y方向与画面符号相反 */  
+		return 1;
+	}
+	/* 应该不可能到这里来 */
+	return -1; 
+}

15_day/naskfunc.nas

@@ -0,0 +1,202 @@
+; naskfunc
+; TAB=4
+
+[FORMAT "WCOFF"]				; 制作目标文件的模式	
+[INSTRSET "i486p"]				; 使用到486为止的指令
+[BITS 32]						; 3制作32位模式用的机器语言
+[FILE "naskfunc.nas"]			; 文件名
+
+		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_inthandler20, _asm_inthandler21
+		GLOBAL	_asm_inthandler27, _asm_inthandler2c
+		GLOBAL	_memtest_sub
+		EXTERN	_inthandler20, _inthandler21
+		EXTERN	_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		; PUSH EFLAGS 
+		POP		EAX
+		RET
+
+_io_store_eflags:	; void io_store_eflags(int eflags);
+		MOV		EAX,[ESP+4]
+		PUSH	EAX
+		POPFD		; 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_inthandler20:
+		PUSH	ES
+		PUSH	DS
+		PUSHAD
+		MOV		EAX,ESP
+		PUSH	EAX
+		MOV		AX,SS
+		MOV		DS,AX
+		MOV		ES,AX
+		CALL	_inthandler20
+		POP		EAX
+		POPAD
+		POP		DS
+		POP		ES
+		IRETD
+
+_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

15_day/sheet.c

@@ -0,0 +1,216 @@
+/* sheet */
+
+#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->map = (unsigned char *) memman_alloc_4k(memman, xsize * ysize);
+	if (ctl->map == 0) {
+		memman_free_4k(memman, (int) ctl, sizeof (struct SHTCTL));
+		goto err;
+	}
+	ctl->vram = vram;
+	ctl->xsize = xsize;
+	ctl->ysize = ysize;
+	ctl->top = -1; /* 没有一张SHEET */
+	for (i = 0; i < MAX_SHEETS; i++) {
+		ctl->sheets0[i].flags = 0; /* 标记为未使用 */
+		ctl->sheets0[i].ctl = ctl; /* 记录所属*/
+	}
+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_refreshmap(struct SHTCTL *ctl, int vx0, int vy0, int vx1, int vy1, int h0)
+{
+	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 */
+		buf = sht->buf;
+		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;
+				if (buf[by * sht->bxsize + bx] != sht->col_inv) {
+					map[vy * ctl->xsize + vx] = sid;
+				}
+			}
+		}
+	}
+	return;
+}
+
+void sheet_refreshsub(struct SHTCTL *ctl, int vx0, int vy0, int vx1, int vy1, int h0, int h1)
+{
+	int h, bx, by, vx, vy, bx0, by0, bx1, by1;
+	unsigned char *buf, *vram = ctl->vram, *map = ctl->map, sid;
+	struct SHEET *sht;
+
+	/* 如果refresh的范围超出了画面则修正 */
+	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 <= h1; h++) {
+		sht = ctl->sheets[h];
+		buf = sht->buf;
+		sid = sht - ctl->sheets0;
+
+		/* 使用vx0～vy1，对bx0～by1进行倒推 */
+		bx0 = vx0 - sht->vx0;
+		by0 = vy0 - sht->vy0;
+		bx1 = vx1 - sht->vx0;
+		by1 = vy1 - sht->vy0;
+		if (bx0 < 0) { bx0 = 0; } /* 处理刷新范围在图层外侧 */
+		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++) {
+				vx = sht->vx0 + bx;
+				if (map[vy * ctl->xsize + vx] == sid) {
+					vram[vy * ctl->xsize + vx] = buf[by * sht->bxsize + bx];
+				}
+			}
+		}
+	}
+	return;
+}
+
+void sheet_updown(struct SHEET *sht, int height)
+{
+	struct SHTCTL *ctl = sht->ctl;
+	int h, old = sht->height; /* 存储设置前的高度信息 */
+	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;
+			sheet_refreshmap(ctl, sht->vx0, sht->vy0, sht->vx0 + sht->bxsize, sht->vy0 + sht->bysize, height + 1);
+			sheet_refreshsub(ctl, sht->vx0, sht->vy0, sht->vx0 + sht->bxsize, sht->vy0 + sht->bysize, height + 1, old);
+		} 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_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);
+		}
+	} else if (old < height) { /* 比以前高 */
+		if (old >= 0) {
+		/* 把中间的拉下去 */
+			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 */
+		/* 将已在上面的提上来 */
+			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_refreshmap(ctl, sht->vx0, sht->vy0, sht->vx0 + sht->bxsize, sht->vy0 + sht->bysize, height);
+		sheet_refreshsub(ctl, sht->vx0, sht->vy0, sht->vx0 + sht->bxsize, sht->vy0 + sht->bysize, height, height); /* 按新图层信息重新绘制画面 */
+	}
+	return;
+}
+
+void sheet_refresh(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(sht->ctl, sht->vx0 + bx0, sht->vy0 + by0, sht->vx0 + bx1, sht->vy0 + by1, sht->height, sht->height);
+	}
+	return;
+}
+
+void sheet_slide(struct SHEET *sht, int vx0, int vy0)
+{
+	struct SHTCTL *ctl = sht->ctl;
+	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_refreshmap(ctl, old_vx0, old_vy0, old_vx0 + sht->bxsize, old_vy0 + sht->bysize, 0);
+		sheet_refreshmap(ctl, vx0, vy0, vx0 + sht->bxsize, vy0 + sht->bysize, sht->height);
+		sheet_refreshsub(ctl, old_vx0, old_vy0, old_vx0 + sht->bxsize, old_vy0 + sht->bysize, 0, sht->height - 1);
+		sheet_refreshsub(ctl, vx0, vy0, vx0 + sht->bxsize, vy0 + sht->bysize, sht->height, sht->height);
+	}
+	return;
+}
+
+void sheet_free(struct SHEET *sht)
+{
+	if (sht->height >= 0) {
+		sheet_updown(sht, -1); /* 如果处于显示状态，则先设定为隐藏 */
+	}
+	sht->flags = 0; /* "未使用"标志 */
+	return;
+}

15_day/timer.c

@@ -0,0 +1,110 @@
+/* 定时器 */
+
+#include "bootpack.h"
+
+#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;
+	struct TIMER *t;
+	io_out8(PIT_CTRL, 0x34);
+	io_out8(PIT_CNT0, 0x9c);
+	io_out8(PIT_CNT0, 0x2e);
+	timerctl.count = 0;
+	for (i = 0; i < MAX_TIMER; i++) {
+		timerctl.timers0[i].flags = 0; /* 没有使用 */
+	}
+	t = timer_alloc(); /* 取得一个 */
+	t->timeout = 0xffffffff;
+	t->flags = TIMER_FLAGS_USING;
+	t->next = 0; /* 末尾 */
+	timerctl.t0 = t; /* 因为现在只有哨兵，所以他就在最前面*/
+	timerctl.next = 0xffffffff; /* 因为只有哨兵，所以下一个超时时刻就是哨兵的时刻 */
+	return;
+}
+
+struct TIMER *timer_alloc(void)
+{
+	int i;
+	for (i = 0; i < MAX_TIMER; i++) {
+		if (timerctl.timers0[i].flags == 0) {
+			timerctl.timers0[i].flags = TIMER_FLAGS_ALLOC;
+			return &timerctl.timers0[i];
+		}
+	}
+	return 0; /* 没找到 */
+}
+
+void timer_free(struct TIMER *timer)
+{
+	timer->flags = 0; /* 未使用 */
+	return;
+}
+
+void timer_init(struct TIMER *timer, struct FIFO32 *fifo, int data)
+{
+	timer->fifo = fifo;
+	timer->data = data;
+	return;
+}
+
+void timer_settime(struct TIMER *timer, unsigned int timeout)
+{
+	int e;
+	struct TIMER *t, *s;
+	timer->timeout = timeout + timerctl.count;
+	timer->flags = TIMER_FLAGS_USING;
+	e = io_load_eflags();
+	io_cli();
+	t = timerctl.t0;
+	if (timer->timeout <= t->timeout) {
+	/* 插入最前面的情况 */
+		timerctl.t0 = timer;
+		timer->next = t; /* 下面是设定t */
+		timerctl.next = timer->timeout;
+		io_store_eflags(e);
+		return;
+	}
+	for (;;) {
+		s = t;
+		t = t->next;
+		if (timer->timeout <= t->timeout) {
+		/* 插入s和t之间的情况 */
+			s->next = timer; /* s下一个是timer */
+			timer->next = t; /* timer的下一个是t */
+			io_store_eflags(e);
+			return;
+		}
+	}
+}
+
+void inthandler20(int *esp)
+{
+	struct TIMER *timer;
+	io_out8(PIC0_OCW2, 0x60); /* 把IRQ-00接收信号结束的信息通知给PIC */
+	timerctl.count++;
+	if (timerctl.next > timerctl.count) {
+		return;
+	}
+	timer = timerctl.t0; /* 首先把最前面的地址赋给timer */
+	for (;;) {
+	/* 因为timers的定时器都处于运行状态，所以不确认flags */
+		if (timer->timeout > timerctl.count) {
+			break;
+		}
+		/* 超时 */
+		timer->flags = TIMER_FLAGS_ALLOC;
+		fifo32_put(timer->fifo, timer->data);
+		timer = timer->next; /* 将下一个定时器的地址赋给timer*/
+	}
+	timerctl.t0 = timer;
+	timerctl.next = timer->timeout;
+	return;
+}