// license:BSD-3-Clause // copyright-holders:David Haywood #include "emu.h" #include "includes/xyonix.h" void xyonix_state::xyonix_palette(palette_device &palette) const { const uint8_t *color_prom = memregion("proms")->base(); for (int i = 0; i < palette.entries(); i++) { int bit0, bit1, bit2; // red component bit0 = BIT(color_prom[i], 0); bit1 = BIT(color_prom[i], 1); bit2 = BIT(color_prom[i], 2); int const r = 0x21 * bit0 + 0x47 * bit1 + 0x97 * bit2; // green component bit0 = BIT(color_prom[i], 5); bit1 = BIT(color_prom[i], 6); bit2 = BIT(color_prom[i], 7); int const g = 0x21 * bit0 + 0x47 * bit1 + 0x97 * bit2; // blue component bit0 = BIT(color_prom[i], 3); bit1 = BIT(color_prom[i], 4); int const b = 0x4f * bit0 + 0xa8 * bit1; palette.set_pen_color(i,rgb_t(r,g,b)); } } TILE_GET_INFO_MEMBER(xyonix_state::get_tile_info) { int tileno; int attr = m_vidram[tile_index+0x1000+1]; tileno = (m_vidram[tile_index+1] << 0) | ((attr & 0x0f) << 8); SET_TILE_INFO_MEMBER(0,tileno,attr >> 4,0); } WRITE8_MEMBER(xyonix_state::vidram_w) { m_vidram[offset] = data; m_tilemap->mark_tile_dirty((offset-1)&0x0fff); } void xyonix_state::video_start() { m_tilemap = &machine().tilemap().create(*m_gfxdecode, tilemap_get_info_delegate(*this, FUNC(xyonix_state::get_tile_info)), TILEMAP_SCAN_ROWS, 4, 8, 80, 32); } uint32_t xyonix_state::screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect) { m_tilemap->draw(screen, bitmap, cliprect, 0, 0); return 0; }