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;

}

_load_gdtr:		; void load_gdtr(int limit, int addr);

		MOV		AX,[ESP+4]		; limit

		MOV		[ESP+6],AX

		LGDT	[ESP+6]

		RET

struct SEGMENT_DESCRIPTOR {

	short limit_low, base_low;

	char base_mid, access_right;

	char limit_high, base_high;

};

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;

}