C++ (Cpp) vga_wcrtcs Examples

Example #1

File: vgastate.c Project: FelipeFernandes1988/Alice-1121-Modem

static void restore_vga_mode(struct vgastate *state)
{
	struct regstate *saved = (struct regstate *) state->vidstate;
	unsigned short iobase;
	int i;

	vga_w(state->vgabase, VGA_MIS_W, saved->misc);

	if (saved->misc & 1)
		iobase = 0x3d0;
	else
		iobase = 0x3b0;

	/* turn off display */
	vga_wseq(state->vgabase, VGA_SEQ_CLOCK_MODE, 
		 saved->seq[VGA_SEQ_CLOCK_MODE] | 0x20);

	/* disable sequencer */
	vga_wseq(state->vgabase, VGA_SEQ_RESET, 0x01);
	
	/* enable palette addressing */
	vga_r(state->vgabase, iobase + 0xa);
	vga_w(state->vgabase, VGA_ATT_W, 0x00);

	for (i = 2; i < state->num_seq; i++) 
		vga_wseq(state->vgabase, i, saved->seq[i]);


	/* unprotect vga regs */
	vga_wcrtcs(state->vgabase, iobase, 17, saved->crtc[17] & ~0x80);
	for (i = 0; i < state->num_crtc; i++) 
		vga_wcrtcs(state->vgabase, iobase, i, saved->crtc[i]);
	
	for (i = 0; i < state->num_gfx; i++) 
		vga_wgfx(state->vgabase, i, saved->gfx[i]);

	for (i = 0; i < state->num_attr; i++) {
		vga_r(state->vgabase, iobase + 0xa);
		vga_wattr(state->vgabase, i, saved->attr[i]);
	}

	/* reenable sequencer */
	vga_wseq(state->vgabase, VGA_SEQ_RESET, 0x03);
	/* turn display on */
	vga_wseq(state->vgabase, VGA_SEQ_CLOCK_MODE, 
		 saved->seq[VGA_SEQ_CLOCK_MODE] & ~(1 << 5));

	/* disable video/palette source */
	vga_r(state->vgabase, iobase + 0xa);
	vga_w(state->vgabase, VGA_ATT_W, 0x20);
}

Example #2

static void restore_vga_mode(struct vgastate *state)
{
	struct regstate *saved = (struct regstate *) state->vidstate;
	unsigned short iobase;
	int i;

	vga_w(state->vgabase, VGA_MIS_W, saved->misc);

	if (saved->misc & 1)
		iobase = 0x3d0;
	else
		iobase = 0x3b0;

	
	vga_wseq(state->vgabase, VGA_SEQ_CLOCK_MODE, 
		 saved->seq[VGA_SEQ_CLOCK_MODE] | 0x20);

	
	vga_wseq(state->vgabase, VGA_SEQ_RESET, 0x01);
	
	
	vga_r(state->vgabase, iobase + 0xa);
	vga_w(state->vgabase, VGA_ATT_W, 0x00);

	for (i = 2; i < state->num_seq; i++) 
		vga_wseq(state->vgabase, i, saved->seq[i]);


	
	vga_wcrtcs(state->vgabase, iobase, 17, saved->crtc[17] & ~0x80);
	for (i = 0; i < state->num_crtc; i++) 
		vga_wcrtcs(state->vgabase, iobase, i, saved->crtc[i]);
	
	for (i = 0; i < state->num_gfx; i++) 
		vga_wgfx(state->vgabase, i, saved->gfx[i]);

	for (i = 0; i < state->num_attr; i++) {
		vga_r(state->vgabase, iobase + 0xa);
		vga_wattr(state->vgabase, i, saved->attr[i]);
	}

	
	vga_wseq(state->vgabase, VGA_SEQ_RESET, 0x03);
	
	vga_wseq(state->vgabase, VGA_SEQ_CLOCK_MODE, 
		 saved->seq[VGA_SEQ_CLOCK_MODE] & ~(1 << 5));

	
	vga_r(state->vgabase, iobase + 0xa);
	vga_w(state->vgabase, VGA_ATT_W, 0x20);
}