void rampart_state::scanline_update(screen_device &screen, int scanline)
{
/* generate 32V signals */
if ((scanline & 32) == 0)
scanline_int_gen(m_maincpu);
}
void vindictr_state::scanline_update(screen_device &screen, int scanline)
{
UINT16 *base = &m_alpha[((scanline - 8) / 8) * 64 + 42];
int x;
/* keep in range */
if (base < m_alpha)
base += 0x7c0;
else if (base >= &m_alpha[0x7c0])
return;
/* update the current parameters */
for (x = 42; x < 64; x++)
{
UINT16 data = *base++;
switch ((data >> 9) & 7)
{
case 2: /* /PFB */
if (m_playfield_tile_bank != (data & 7))
{
screen.update_partial(scanline - 1);
m_playfield_tile_bank = data & 7;
m_playfield_tilemap->mark_all_dirty();
}
break;
case 3: /* /PFHSLD */
if (m_playfield_xscroll != (data & 0x1ff))
{
screen.update_partial(scanline - 1);
m_playfield_tilemap->set_scrollx(0, data);
m_playfield_xscroll = data & 0x1ff;
}
break;
case 4: /* /MOHS */
if (atarimo_get_xscroll(0) != (data & 0x1ff))
{
screen.update_partial(scanline - 1);
atarimo_set_xscroll(0, data & 0x1ff);
}
break;
case 5: /* /PFSPC */
break;
case 6: /* /VIRQ */
scanline_int_gen(*subdevice("maincpu"));
break;
case 7: /* /PFVS */
{
/* a new vscroll latches the offset into a counter; we must adjust for this */
int offset = scanline;
const rectangle &visible_area = screen.visible_area();
if (offset > visible_area.max_y)
offset -= visible_area.max_y + 1;
if (m_playfield_yscroll != ((data - offset) & 0x1ff))
{
screen.update_partial(scanline - 1);
m_playfield_tilemap->set_scrolly(0, data - offset);
atarimo_set_yscroll(0, (data - offset) & 0x1ff);
}
break;
}
}
}
}
void arcadecl_state::scanline_update(screen_device &screen, int scanline)
{
/* generate 32V signals */
if ((scanline & 32) == 0)
scanline_int_gen(*subdevice("maincpu"));
}
void klax_state::scanline_update(screen_device &screen, int scanline)
{
/* generate 32V signals */
if ((scanline & 32) == 0 && !(ioport("P1")->read() & 0x800))
scanline_int_gen(*subdevice("maincpu"));
}
