// license:BSD-3-Clause // copyright-holders:R. Belmont /************************************************************************* Run and Gun (c) 1993 Konami Video hardware emulation. Driver by R. Belmont *************************************************************************/ #include "emu.h" #include "includes/rungun.h" /* TTL text plane stuff */ TILE_GET_INFO_MEMBER(rungun_state::ttl_get_tile_info) { uint32_t base_addr = (uintptr_t)tilemap.user_data(); uint8_t *lvram = (uint8_t *)m_ttl_vram.get() + base_addr; int attr, code; attr = (lvram[BYTE_XOR_LE(tile_index<<2)] & 0xf0) >> 4; code = ((lvram[BYTE_XOR_LE(tile_index<<2)] & 0x0f) << 8) | (lvram[BYTE_XOR_LE((tile_index<<2)+2)]); SET_TILE_INFO_MEMBER(m_ttl_gfx_index, code, attr, 0); } K055673_CB_MEMBER(rungun_state::sprite_callback) { *color = m_sprite_colorbase | (*color & 0x001f); } READ16_MEMBER(rungun_state::ttl_ram_r) { return m_ttl_vram[offset+(m_video_mux_bank*0x1000)]; } WRITE16_MEMBER(rungun_state::ttl_ram_w) { COMBINE_DATA(&m_ttl_vram[offset+(m_video_mux_bank*0x1000)]); m_ttl_tilemap[m_video_mux_bank]->mark_tile_dirty(offset / 2); } /* 53936 (PSAC2) rotation/zoom plane */ READ16_MEMBER(rungun_state::psac2_videoram_r) { return m_psac2_vram[offset+(m_video_mux_bank*0x80000)]; } WRITE16_MEMBER(rungun_state::psac2_videoram_w) { COMBINE_DATA(&m_psac2_vram[offset+(m_video_mux_bank*0x80000)]); m_936_tilemap[m_video_mux_bank]->mark_tile_dirty(offset / 2); } TILE_GET_INFO_MEMBER(rungun_state::get_rng_936_tile_info) { uint32_t base_addr = (uintptr_t)tilemap.user_data(); int tileno, colour, flipx; tileno = m_psac2_vram[tile_index * 2 + 1 + base_addr] & 0x3fff; flipx = (m_psac2_vram[tile_index * 2 + 1 + base_addr] & 0xc000) >> 14; colour = 0x10 + (m_psac2_vram[tile_index * 2 + base_addr] & 0x000f); SET_TILE_INFO_MEMBER(0, tileno, colour, TILE_FLIPYX(flipx)); } void rungun_state::video_start() { static const gfx_layout charlayout = { 8, 8, // 8x8 4096, // # of tiles 4, // 4bpp { 0, 1, 2, 3 }, // plane offsets { 0*4, 1*4, 2*4, 3*4, 4*4, 5*4, 6*4, 7*4 }, // X offsets { 0*8*4, 1*8*4, 2*8*4, 3*8*4, 4*8*4, 5*8*4, 6*8*4, 7*8*4 }, // Y offsets 8*8*4 }; int gfx_index; m_ttl_vram = std::make_unique(0x1000*2); m_psac2_vram = std::make_unique(0x80000*2); /* find first empty slot to decode gfx */ for (gfx_index = 0; gfx_index < MAX_GFX_ELEMENTS; gfx_index++) if (m_gfxdecode->gfx(gfx_index) == nullptr) break; assert(gfx_index != MAX_GFX_ELEMENTS); // decode the ttl layer's gfx m_gfxdecode->set_gfx(gfx_index, std::make_unique(m_palette, charlayout, memregion("gfx3")->base(), 0, m_palette->entries() / 16, 0)); m_ttl_gfx_index = gfx_index; // create the tilemaps for(uint32_t screen_num = 0;screen_num < 2;screen_num++) { m_ttl_tilemap[screen_num] = &machine().tilemap().create(*m_gfxdecode, tilemap_get_info_delegate(*this, FUNC(rungun_state::ttl_get_tile_info)), TILEMAP_SCAN_ROWS, 8, 8, 64, 32); m_ttl_tilemap[screen_num]->set_user_data((void *)(uintptr_t)(screen_num * 0x2000)); m_ttl_tilemap[screen_num]->set_transparent_pen(0); m_936_tilemap[screen_num] = &machine().tilemap().create(*m_gfxdecode, tilemap_get_info_delegate(*this, FUNC(rungun_state::get_rng_936_tile_info)), TILEMAP_SCAN_ROWS, 16, 16, 128, 128); m_936_tilemap[screen_num]->set_user_data((void *)(uintptr_t)(screen_num * 0x80000)); m_936_tilemap[screen_num]->set_transparent_pen(0); } m_sprite_colorbase = 0x20; m_screen->register_screen_bitmap(m_rng_dual_demultiplex_left_temp); m_screen->register_screen_bitmap(m_rng_dual_demultiplex_right_temp); } uint32_t rungun_state::screen_update_rng(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect) { bitmap.fill(m_palette->black_pen(), cliprect); screen.priority().fill(0, cliprect); m_current_display_bank = m_screen->frame_number() & 1; if(m_single_screen_mode == true) m_current_display_bank = 0; if(m_video_priority_mode == false) { m_k053936->zoom_draw(screen, bitmap, cliprect, m_936_tilemap[m_current_display_bank], 0, 0, 1); m_k055673->k053247_sprites_draw(bitmap, cliprect); } else { m_k055673->k053247_sprites_draw(bitmap, cliprect); m_k053936->zoom_draw(screen, bitmap, cliprect, m_936_tilemap[m_current_display_bank], 0, 0, 1); } m_ttl_tilemap[m_current_display_bank]->draw(screen, bitmap, cliprect, 0, 0); return 0; } // the 60hz signal gets split between 2 screens uint32_t rungun_state::screen_update_rng_dual_left(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect) { int m_current_display_bank = m_screen->frame_number() & 1; if (!m_current_display_bank) screen_update_rng(screen, m_rng_dual_demultiplex_left_temp, cliprect); else screen_update_rng(screen, m_rng_dual_demultiplex_right_temp, cliprect); copybitmap( bitmap, m_rng_dual_demultiplex_left_temp, 0, 0, 0, 0, cliprect); return 0; } // this depends upon the fisrt screen being updated, and the bitmap being copied to the temp bitmap uint32_t rungun_state::screen_update_rng_dual_right(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect) { copybitmap( bitmap, m_rng_dual_demultiplex_right_temp, 0, 0, 0, 0, cliprect); return 0; } void rungun_state::sprite_dma_trigger(void) { uint32_t src_address; if(m_single_screen_mode == true) src_address = 1*0x2000; else src_address = m_current_display_bank*0x2000; // TODO: size could be programmable somehow. for(int i=0;i<0x1000;i+=2) m_k055673->k053247_word_w(i/2, m_banked_ram[(i + src_address) /2]); }