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📄 90x60.c

📁 一个类linux的dos下开发的操作系统.
💻 C
📖 第 1 页 / 共 4 页
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1234 
/*****************************************************************************
sets video mode 80x25, 80x50, or 80x60 WITHOUT using the BIOS
*****************************************************************************/
#include <string.h> /* movedata() */
#include <dos.h> /* inportb(), outportb(), outport(), poke(), pokeb() */

/* define as 25 for 80x25 mode, 50 for 80x50 mode, or 60 for 90x60 mode */
#define	HEIGHT			60

#if defined(__TURBOC__)
#define	vmemwr(Dst,Src,Len)	\
	movedata(_DS, (unsigned)Src, 0xB800, Dst, Len)
#define	poke40(O,V)	poke(0x40, O, V)
#define	pokeb40(O,V)	pokeb(0x40, O, V)

#elif defined(__DJGPP__)
#include <sys/farptr.h> /* _farpokeb(), _farpokew() */
#include <go32.h> /* _my_ds(), _dos_ds */

#define	vmemwr(Dst,Src,Len)	\
	movedata(_my_ds(), (unsigned)Src, _dos_ds, 0xB8000L + (Dst), Len)
#define	poke40(O,V)	_farpokew(_dos_ds,0x400 + (O),V)
#define	pokeb40(O,V)	_farpokeb(_dos_ds,0x400 + (O),V)
/* ::sigh:: */
#define	outport(P,V)	outportw(P,V)

#else
#error Not Turbo C, not DJGPP. Sorry.
#endif

/* number of registers in each VGA unit */
#define	NUM_CRTC_REGS	25
#define	NUM_AC_REGS	21
#define	NUM_GC_REGS	9
#define	NUM_SEQ_REGS	5
#define	NUM_OTHER_REGS	1
#define	NUM_REGS	(NUM_CRTC_REGS + NUM_AC_REGS + NUM_GC_REGS +	\
				+ NUM_SEQ_REGS + NUM_OTHER_REGS)

/* I/O addresses for VGA registers */
#define	VGA_AC_INDEX		0x3C0
#define	VGA_AC_WRITE		0x3C0
#define	VGA_AC_READ		0x3C1
#define	VGA_MISC_WRITE		0x3C2
#define	VGA_SEQ_INDEX		0x3C4
#define	VGA_SEQ_DATA		0x3C5
#define	VGA_DAC_READ_INDEX	0x3C7
#define	VGA_DAC_WRITE_INDEX	0x3C8
#define	VGA_DAC_DATA		0x3C9
#define	VGA_MISC_READ		0x3CC
#define	VGA_GC_INDEX		0x3CE
#define	VGA_GC_DATA		0x3CF
#define	VGA_CRTC_INDEX		0x3D4
#define	VGA_CRTC_DATA		0x3D5
#define	VGA_INSTAT_READ		0x3DA

typedef struct
{
	unsigned short first, last;
	unsigned char height;
	unsigned char *bitmaps;
} font_t;

static unsigned char _mode_80x25[NUM_REGS] =
{
	0x5F, 0x4F, 0x50, 0x82, 0x55, 0x81, 0xBF, 0x1F, 0x00, 0x4F,
		0x0D, 0x0E, 0x00, 0x00, 0x00, 0xA0, 0x9C, 0x8E, 0x8F,
		0x28, 0x1F, 0x96, 0xB9, 0xA3, 0xFF,
	0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x14, 0x07, 0x38, 0x39,
		0x3A, 0x3B, 0x3C, 0x3D, 0x3E, 0x3F, 0x0C, 0x00, 0x0F,
		0x08, 0x00,
	0x00, 0x00, 0x00, 0x00, 0x00, 0x10, 0x0E, 0x00, 0xFF,
	0x03, 0x00, 0x03, 0x00, 0x02,
	0x67
};

static unsigned char _mode_80x50[NUM_REGS] =
{
	0x5F, 0x4F, 0x50, 0x82, 0x55, 0x81, 0xBF, 0x1F, 0x00, 0x47,
		0x06, 0x07, 0x00, 0x00, 0x01, 0x40, 0x9C, 0x8E, 0x8F,
		0x28, 0x1F, 0x96, 0xB9, 0xA3, 0xFF,
	0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x14, 0x07, 0x38, 0x39,
		0x3A, 0x3B, 0x3C, 0x3D, 0x3E, 0x3F, 0x0C, 0x00, 0x0F,
		0x08, 0x00,
	0x00, 0x00, 0x00, 0x00, 0x00, 0x10, 0x0E, 0x00, 0xFF,
	0x03, 0x00, 0x03, 0x00, 0x02,
	0x67
};

static unsigned char _mode_90x60[NUM_REGS] =
{
	0x6B, 0x59, 0x5A, 0x82, 0x60, 0x8D, 0x0B, 0x3E, 0x00, 0x47,
		0x0D, 0x0E, 0x00, 0x00, 0x07, 0x80, 0xEA, 0x0C, 0xDF,
		0x2D, 0x08, 0xE8, 0x05, 0xA3, 0xFF,
	0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x38, 0x39,
		0x3A, 0x3B, 0x3C, 0x3D, 0x3E, 0x3F, 0x08, 0x00, 0x0F,
		0x08, 0x00,
	0x00, 0x00, 0x00, 0x00, 0x00, 0x10, 0x0E, 0x0F, 0xFF,
	0x03, 0x01, 0x03, 0x00, 0x02,
	0xE7
};

static unsigned char _bitmaps_8x8[2048] =
{
	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
	0x7E, 0x81, 0xA5, 0x81, 0xBD, 0x99, 0x81, 0x7E,
	0x7E, 0xFF, 0xDB, 0xFF, 0xC3, 0xE7, 0xFF, 0x7E,
	0x6C, 0xFE, 0xFE, 0xFE, 0x7C, 0x38, 0x10, 0x00,
	0x10, 0x38, 0x7C, 0xFE, 0x7C, 0x38, 0x10, 0x00,
	0x38, 0x7C, 0x38, 0xFE, 0xFE, 0x92, 0x10, 0x7C,
	0x00, 0x10, 0x38, 0x7C, 0xFE, 0x7C, 0x38, 0x7C,
	0x00, 0x00, 0x18, 0x3C, 0x3C, 0x18, 0x00, 0x00,
	0xFF, 0xFF, 0xE7, 0xC3, 0xC3, 0xE7, 0xFF, 0xFF,
	0x00, 0x3C, 0x66, 0x42, 0x42, 0x66, 0x3C, 0x00,
	0xFF, 0xC3, 0x99, 0xBD, 0xBD, 0x99, 0xC3, 0xFF,
	0x0F, 0x07, 0x0F, 0x7D, 0xCC, 0xCC, 0xCC, 0x78,
	0x3C, 0x66, 0x66, 0x66, 0x3C, 0x18, 0x7E, 0x18,
	0x3F, 0x33, 0x3F, 0x30, 0x30, 0x70, 0xF0, 0xE0,
	0x7F, 0x63, 0x7F, 0x63, 0x63, 0x67, 0xE6, 0xC0,
	0x99, 0x5A, 0x3C, 0xE7, 0xE7, 0x3C, 0x5A, 0x99,
	0x80, 0xE0, 0xF8, 0xFE, 0xF8, 0xE0, 0x80, 0x00,
	0x02, 0x0E, 0x3E, 0xFE, 0x3E, 0x0E, 0x02, 0x00,
	0x18, 0x3C, 0x7E, 0x18, 0x18, 0x7E, 0x3C, 0x18,
	0x66, 0x66, 0x66, 0x66, 0x66, 0x00, 0x66, 0x00,
	0x7F, 0xDB, 0xDB, 0x7B, 0x1B, 0x1B, 0x1B, 0x00,
	0x3E, 0x63, 0x38, 0x6C, 0x6C, 0x38, 0x86, 0xFC,
	0x00, 0x00, 0x00, 0x00, 0x7E, 0x7E, 0x7E, 0x00,
	0x18, 0x3C, 0x7E, 0x18, 0x7E, 0x3C, 0x18, 0xFF,
	0x18, 0x3C, 0x7E, 0x18, 0x18, 0x18, 0x18, 0x00, 
	0x18, 0x18, 0x18, 0x18, 0x7E, 0x3C, 0x18, 0x00,
	0x00, 0x18, 0x0C, 0xFE, 0x0C, 0x18, 0x00, 0x00, 
	0x00, 0x30, 0x60, 0xFE, 0x60, 0x30, 0x00, 0x00, 
	0x00, 0x00, 0xC0, 0xC0, 0xC0, 0xFE, 0x00, 0x00, 
	0x00, 0x24, 0x66, 0xFF, 0x66, 0x24, 0x00, 0x00, 
	0x00, 0x18, 0x3C, 0x7E, 0xFF, 0xFF, 0x00, 0x00, 
	0x00, 0xFF, 0xFF, 0x7E, 0x3C, 0x18, 0x00, 0x00, 
	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
	0x18, 0x3C, 0x3C, 0x18, 0x18, 0x00, 0x18, 0x00,
	0x6C, 0x6C, 0x6C, 0x00, 0x00, 0x00, 0x00, 0x00, 
	0x6C, 0x6C, 0xFE, 0x6C, 0xFE, 0x6C, 0x6C, 0x00, 
	0x18, 0x7E, 0xC0, 0x7C, 0x06, 0xFC, 0x18, 0x00, 
	0x00, 0xC6, 0xCC, 0x18, 0x30, 0x66, 0xC6, 0x00, 
	0x38, 0x6C, 0x38, 0x76, 0xDC, 0xCC, 0x76, 0x00,
	0x30, 0x30, 0x60, 0x00, 0x00, 0x00, 0x00, 0x00,
	0x18, 0x30, 0x60, 0x60, 0x60, 0x30, 0x18, 0x00, 
	0x60, 0x30, 0x18, 0x18, 0x18, 0x30, 0x60, 0x00, 
	0x00, 0x66, 0x3C, 0xFF, 0x3C, 0x66, 0x00, 0x00, 
	0x00, 0x18, 0x18, 0x7E, 0x18, 0x18, 0x00, 0x00,
	0x00, 0x00, 0x00, 0x00, 0x00, 0x18, 0x18, 0x30,
	0x00, 0x00, 0x00, 0x7E, 0x00, 0x00, 0x00, 0x00,
	0x00, 0x00, 0x00, 0x00, 0x00, 0x18, 0x18, 0x00,
	0x06, 0x0C, 0x18, 0x30, 0x60, 0xC0, 0x80, 0x00,
	0x7C, 0xCE, 0xDE, 0xF6, 0xE6, 0xC6, 0x7C, 0x00, 
	0x30, 0x70, 0x30, 0x30, 0x30, 0x30, 0xFC, 0x00, 
	0x78, 0xCC, 0x0C, 0x38, 0x60, 0xCC, 0xFC, 0x00,
	0x78, 0xCC, 0x0C, 0x38, 0x0C, 0xCC, 0x78, 0x00, 
	0x1C, 0x3C, 0x6C, 0xCC, 0xFE, 0x0C, 0x1E, 0x00, 
	0xFC, 0xC0, 0xF8, 0x0C, 0x0C, 0xCC, 0x78, 0x00, 
	0x38, 0x60, 0xC0, 0xF8, 0xCC, 0xCC, 0x78, 0x00, 
	0xFC, 0xCC, 0x0C, 0x18, 0x30, 0x30, 0x30, 0x00, 
	0x78, 0xCC, 0xCC, 0x78, 0xCC, 0xCC, 0x78, 0x00, 
	0x78, 0xCC, 0xCC, 0x7C, 0x0C, 0x18, 0x70, 0x00, 
	0x00, 0x18, 0x18, 0x00, 0x00, 0x18, 0x18, 0x00, 
	0x00, 0x18, 0x18, 0x00, 0x00, 0x18, 0x18, 0x30, 
	0x18, 0x30, 0x60, 0xC0, 0x60, 0x30, 0x18, 0x00, 
	0x00, 0x00, 0x7E, 0x00, 0x7E, 0x00, 0x00, 0x00, 
	0x60, 0x30, 0x18, 0x0C, 0x18, 0x30, 0x60, 0x00,
	0x3C, 0x66, 0x0C, 0x18, 0x18, 0x00, 0x18, 0x00, 
	0x7C, 0xC6, 0xDE, 0xDE, 0xDC, 0xC0, 0x7C, 0x00, 
	0x30, 0x78, 0xCC, 0xCC, 0xFC, 0xCC, 0xCC, 0x00, 
	0xFC, 0x66, 0x66, 0x7C, 0x66, 0x66, 0xFC, 0x00, 
	0x3C, 0x66, 0xC0, 0xC0, 0xC0, 0x66, 0x3C, 0x00, 
	0xF8, 0x6C, 0x66, 0x66, 0x66, 0x6C, 0xF8, 0x00, 
	0xFE, 0x62, 0x68, 0x78, 0x68, 0x62, 0xFE, 0x00, 
	0xFE, 0x62, 0x68, 0x78, 0x68, 0x60, 0xF0, 0x00,
	0x3C, 0x66, 0xC0, 0xC0, 0xCE, 0x66, 0x3A, 0x00, 
	0xCC, 0xCC, 0xCC, 0xFC, 0xCC, 0xCC, 0xCC, 0x00, 
	0x78, 0x30, 0x30, 0x30, 0x30, 0x30, 0x78, 0x00, 
	0x1E, 0x0C, 0x0C, 0x0C, 0xCC, 0xCC, 0x78, 0x00, 
	0xE6, 0x66, 0x6C, 0x78, 0x6C, 0x66, 0xE6, 0x00, 
	0xF0, 0x60, 0x60, 0x60, 0x62, 0x66, 0xFE, 0x00, 
	0xC6, 0xEE, 0xFE, 0xFE, 0xD6, 0xC6, 0xC6, 0x00,
	0xC6, 0xE6, 0xF6, 0xDE, 0xCE, 0xC6, 0xC6, 0x00,
	0x38, 0x6C, 0xC6, 0xC6, 0xC6, 0x6C, 0x38, 0x00, 
	0xFC, 0x66, 0x66, 0x7C, 0x60, 0x60, 0xF0, 0x00, 
	0x7C, 0xC6, 0xC6, 0xC6, 0xD6, 0x7C, 0x0E, 0x00, 
	0xFC, 0x66, 0x66, 0x7C, 0x6C, 0x66, 0xE6, 0x00, 
	0x7C, 0xC6, 0xE0, 0x78, 0x0E, 0xC6, 0x7C, 0x00, 
	0xFC, 0xB4, 0x30, 0x30, 0x30, 0x30, 0x78, 0x00,
	0xCC, 0xCC, 0xCC, 0xCC, 0xCC, 0xCC, 0xFC, 0x00, 
	0xCC, 0xCC, 0xCC, 0xCC, 0xCC, 0x78, 0x30, 0x00, 
	0xC6, 0xC6, 0xC6, 0xC6, 0xD6, 0xFE, 0x6C, 0x00, 
	0xC6, 0xC6, 0x6C, 0x38, 0x6C, 0xC6, 0xC6, 0x00,
	0xCC, 0xCC, 0xCC, 0x78, 0x30, 0x30, 0x78, 0x00,
	0xFE, 0xC6, 0x8C, 0x18, 0x32, 0x66, 0xFE, 0x00,
	0x78, 0x60, 0x60, 0x60, 0x60, 0x60, 0x78, 0x00,
	0xC0, 0x60, 0x30, 0x18, 0x0C, 0x06, 0x02, 0x00,
	0x78, 0x18, 0x18, 0x18, 0x18, 0x18, 0x78, 0x00, 
	0x10, 0x38, 0x6C, 0xC6, 0x00, 0x00, 0x00, 0x00, 
	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF,
	0x30, 0x30, 0x18, 0x00, 0x00, 0x00, 0x00, 0x00, 
	0x00, 0x00, 0x78, 0x0C, 0x7C, 0xCC, 0x76, 0x00, 
	0xE0, 0x60, 0x60, 0x7C, 0x66, 0x66, 0xDC, 0x00, 
	0x00, 0x00, 0x78, 0xCC, 0xC0, 0xCC, 0x78, 0x00, 
	0x1C, 0x0C, 0x0C, 0x7C, 0xCC, 0xCC, 0x76, 0x00, 
	0x00, 0x00, 0x78, 0xCC, 0xFC, 0xC0, 0x78, 0x00, 
	0x38, 0x6C, 0x64, 0xF0, 0x60, 0x60, 0xF0, 0x00, 
	0x00, 0x00, 0x76, 0xCC, 0xCC, 0x7C, 0x0C, 0xF8,
1234

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