Exemplos de vga_gr_read em C++ (Cpp)

Exemplo n.º 1

Arquivo: vga_io.c Projeto: AdriDlu/coreboot

void
vga_gr_mask(unsigned char index, unsigned char value, unsigned char mask)
{
	unsigned char tmp;

	tmp = vga_gr_read(index);
	tmp &= ~mask;
	tmp |= (value & mask);
	vga_gr_write(index, tmp);
}

Exemplo n.º 2

Arquivo: vga.c Projeto: 0ida/coreboot

static void
vga_font_8x16_load(void)
{
	unsigned char *p;
	int i, j;
	unsigned char sr2, sr4, gr5, gr6;

#define height 16
#define count 256

	sr2 = vga_sr_read(0x02);
	sr4 = vga_sr_read(0x04);
	gr5 = vga_gr_read(0x05);
	gr6 = vga_gr_read(0x06);

	/* disable odd/even */
	vga_sr_mask(0x04, 0x04, 0x04);
	vga_gr_mask(0x05, 0x00, 0x10);
	vga_gr_mask(0x06, 0x00, 0x02);

	/* plane 2 */
	vga_sr_write(0x02, 0x04);
	p = (unsigned char *) VGA_FB;
	for (i = 0; i < count; i++) {
		for (j = 0; j < 32; j++) {
			if (j < height)
				*p = vga_font_8x16[i][j];
			else
				*p = 0x00;
			p++;
		}
	}

	vga_gr_write(0x06, gr6);
	vga_gr_write(0x05, gr5);
	vga_sr_write(0x04, sr4);
	vga_sr_write(0x02, sr2);

	/* set up font size */
	vga_cr_mask(0x09, 16 - 1, 0x1F);
}