Esempio n. 1
0
/*
 * cursor() sets an offset (0-1999) into the 80x25 text area
 */
static void
cursor(int x, int y)
{
	int pos = console_global_data.cols*y + x;
	vga_outb(14, 0x14);
	vga_outb(0x15, pos>>8);
	vga_outb(0x14, 15);
	vga_outb(0x15, pos);
}
Esempio n. 2
0
void vga_mode_set(const struct vga_regs* regs)
{
	unsigned i;

	vga_state.regs = *regs;

	vga_regs_info_get(&vga_state.regs, &vga_state.info);

	/* misc */
	outportb(VGAREG_MISC_WRITE_DATA, regs->misc);

	/* pel */
	outportb(VGAREG_PEL_MASK, 0xFF);

	/* sequencer reset on */
	vga_outb(VGAREG_SEQ_ADDR, 0, 0x01);

	/* sequencer */
	for (i = 1; i < VGAREG_SEQ_MAX; ++i)
		vga_outb(VGAREG_SEQ_ADDR, i, regs->seq[i]);

	/* sequencer reset off */
	vga_outb(VGAREG_SEQ_ADDR, 0, 0x03);

	/* enable crtc */
	vga_outb(VGAREG_CRTC_ADDR, 0x11, vga_inb(VGAREG_CRTC_ADDR, 0x11) & 0x7F);

	/* crtc */
	for (i = 0; i < VGAREG_CRTC_MAX; ++i)
		vga_outb(VGAREG_CRTC_ADDR, i, regs->crtc[i]);

	/* graphics controller */
	for (i = 0; i < VGAREG_GRACON_MAX; ++i)
		vga_outb(VGAREG_GRACON_ADDR, i, regs->gracon[i]);

	/* attribute controller */
	for (i = 0; i < VGAREG_ATTRCON_MAX; ++i)
		vga_outb(VGAREG_ATTRCON_ADDR, i, regs->attrcon[i]);
}