// license:BSD-3-Clause // copyright-holders:Zsolt Vasvari, Curt Coder /*************************************************************************** video/lvcards.cpp Functions to emulate the video hardware of the machine. ***************************************************************************/ #include "emu.h" #include "includes/lvcards.h" void lvcards_state::lvcards_palette(palette_device &palette) const//Ever so slightly different, but different enough. { const uint8_t *color_prom = memregion("proms")->base(); for (int i = 0; i < palette.entries(); i++) { int bit0, bit1, bit2, bit3; // red component bit0 = (color_prom[0] >> 0) & 0x11; bit1 = (color_prom[0] >> 1) & 0x11; bit2 = (color_prom[0] >> 2) & 0x11; bit3 = (color_prom[0] >> 3) & 0x11; int const r = 0x0e * bit0 + 0x1f * bit1 + 0x43 * bit2 + 0x8f * bit3; // green component bit0 = (color_prom[palette.entries()] >> 0) & 0x11; bit1 = (color_prom[palette.entries()] >> 1) & 0x11; bit2 = (color_prom[palette.entries()] >> 2) & 0x11; bit3 = (color_prom[palette.entries()] >> 3) & 0x11; int const g = 0x0e * bit0 + 0x1f * bit1 + 0x43 * bit2 + 0x8f * bit3; // blue component bit0 = (color_prom[2 * palette.entries()] >> 0) & 0x11; bit1 = (color_prom[2 * palette.entries()] >> 1) & 0x11; bit2 = (color_prom[2 * palette.entries()] >> 2) & 0x11; bit3 = (color_prom[2 * palette.entries()] >> 3) & 0x11; int const b = 0x0e * bit0 + 0x1f * bit1 + 0x43 * bit2 + 0x8f * bit3; palette.set_pen_color(i, rgb_t(r, g, b)); color_prom++; } } WRITE8_MEMBER(lvcards_state::videoram_w) { m_videoram[offset] = data; m_bg_tilemap->mark_tile_dirty(offset); } WRITE8_MEMBER(lvcards_state::colorram_w) { m_colorram[offset] = data; m_bg_tilemap->mark_tile_dirty(offset); } TILE_GET_INFO_MEMBER(lvcards_state::get_bg_tile_info) { int attr = m_colorram[tile_index]; int code = m_videoram[tile_index] + ((attr & 0x30) << 4) + ((attr & 0x80) << 3); int color = attr & 0x0f; int flags = (attr & 0x40) ? TILE_FLIPX : 0; SET_TILE_INFO_MEMBER(0, code, color, flags); } void lvcards_state::video_start() { m_bg_tilemap = &machine().tilemap().create(*m_gfxdecode, tilemap_get_info_delegate(*this, FUNC(lvcards_state::get_bg_tile_info)), TILEMAP_SCAN_ROWS, 8, 8, 32, 32); } uint32_t lvcards_state::screen_update_lvcards(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect) { m_bg_tilemap->draw(screen, bitmap, cliprect, 0, 0); return 0; }