// license:BSD-3-Clause // copyright-holders:Nicola Salmoria #include "emu.h" #include "includes/shisen.h" WRITE8_MEMBER(shisen_state::videoram_w) { m_videoram[offset] = data; m_bg_tilemap->mark_tile_dirty(offset / 2); } WRITE8_MEMBER(shisen_state::bankswitch_w) { if (data & 0xc0) logerror("bank switch %02x\n",data); /* bits 0-2 select ROM bank */ membank("bank1")->set_entry(data & 0x07); /* bits 3-5 select gfx bank */ int bank = (data & 0x38) >> 3; if (m_gfxbank != bank) { m_gfxbank = bank; machine().tilemap().mark_all_dirty(); } /* bits 6-7 unknown */ } WRITE8_MEMBER(shisen_state::paletteram_w) { m_paletteram[offset] = data; offset &= 0xff; m_palette->set_pen_color(offset, pal5bit(m_paletteram[offset + 0x000]), pal5bit(m_paletteram[offset + 0x100]), pal5bit(m_paletteram[offset + 0x200])); } TILE_GET_INFO_MEMBER(shisen_state::get_bg_tile_info) { int offs = tile_index * 2; int code = m_videoram[offs] + ((m_videoram[offs + 1] & 0x0f) << 8) + (m_gfxbank << 12); int color = (m_videoram[offs + 1] & 0xf0) >> 4; SET_TILE_INFO_MEMBER(0, code, color, 0); } void shisen_state::video_start() { m_bg_tilemap = &machine().tilemap().create( *m_gfxdecode, tilemap_get_info_delegate(*this, FUNC(shisen_state::get_bg_tile_info)), TILEMAP_SCAN_ROWS, 8, 8, 64, 32); membank("bank1")->configure_entries(0, 8, memregion("maincpu")->base() + 0x10000, 0x4000); save_item(NAME(m_gfxbank)); } uint32_t shisen_state::screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect) { // on Irem boards, screen flip is handled in both hardware and software. // this game doesn't have cocktail mode so if there's software control we don't // know where it is mapped. flip_screen_set(~ioport("DSW2")->read() & 1); m_bg_tilemap->draw(screen, bitmap, cliprect, 0, 0); return 0; }