static WRITE8_HANDLER( flipscreen_w )
{
/* flip Y/X could be the other way round... */
if (offset)
flip_screen_y_set(~data & 1);
else
flip_screen_x_set(~data & 1);
}
UINT32 lkage_state::screen_update_lkage(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
{
int bank;
flip_screen_x_set(~m_vreg[2] & 0x01);
flip_screen_y_set(~m_vreg[2] & 0x02);
bank = m_vreg[1] & 0x08;
if (m_bg_tile_bank != bank)
{
m_bg_tile_bank = bank;
m_bg_tilemap->mark_all_dirty();
}
bank = m_vreg[0]&0x04;
if (m_fg_tile_bank != bank)
{
m_fg_tile_bank = bank;
m_fg_tilemap->mark_all_dirty();
}
bank = m_vreg[0]&0x02;
if (m_tx_tile_bank != bank)
{
m_tx_tile_bank = bank;
m_tx_tilemap->mark_all_dirty();
}
m_bg_tilemap->set_palette_offset(0x300 + (m_vreg[1] & 0xf0));
m_fg_tilemap->set_palette_offset(0x200 + (m_vreg[1] & 0xf0));
m_tx_tilemap->set_palette_offset(0x110);
m_tx_tilemap->set_scrollx(0, m_scroll[0]);
m_tx_tilemap->set_scrolly(0, m_scroll[1]);
m_fg_tilemap->set_scrollx(0, m_scroll[2]);
m_fg_tilemap->set_scrolly(0, m_scroll[3]);
m_bg_tilemap->set_scrollx(0, m_scroll[4]);
m_bg_tilemap->set_scrolly(0, m_scroll[5]);
machine().priority_bitmap.fill(0, cliprect);
if ((m_vreg[2] & 0xf0) == 0xf0)
{
m_bg_tilemap->draw(bitmap, cliprect, 0, 1);
m_fg_tilemap->draw(bitmap, cliprect, 0, (m_vreg[1] & 2) ? 2 : 4);
m_tx_tilemap->draw(bitmap, cliprect, 0, 4);
draw_sprites(machine(), bitmap, cliprect);
}
else
{
m_tx_tilemap->draw(bitmap, cliprect, TILEMAP_DRAW_OPAQUE, 0);
}
return 0;
}
void gottlieb_state::video_control_w(u8 data)
{
/* bit 0 controls foreground/background priority */
if (m_background_priority != (BIT(data, 0)))
m_screen->update_partial(m_screen->vpos());
m_background_priority = BIT(data, 0);
/* bit 1 controls horizontal flip screen */
flip_screen_x_set(BIT(data, 1));
/* bit 2 controls vertical flip screen */
flip_screen_y_set(BIT(data, 2));
}
static WRITE8_HANDLER(pitnrun_vflip_w)
{
flip_screen_y_set(space->machine(), data);
}
static WRITE8_HANDLER(pitnrun_vflip_w)
{
flip_screen_y_set(data);
}
static WRITE_HANDLER( flip_screen_y_w )
{
flip_screen_y_set(data);
}
void flip_screen_set(int on)
{
flip_screen_x_set(on);
flip_screen_y_set(on);
}