#include "emu.h" #include "includes/shisen.h" WRITE8_HANDLER( sichuan2_videoram_w ) { shisen_state *state = space->machine().driver_data(); state->m_videoram[offset] = data; tilemap_mark_tile_dirty(state->m_bg_tilemap, offset / 2); } WRITE8_HANDLER( sichuan2_bankswitch_w ) { shisen_state *state = space->machine().driver_data(); int bankaddress; int bank; UINT8 *RAM = space->machine().region("maincpu")->base(); if (data & 0xc0) logerror("bank switch %02x\n",data); /* bits 0-2 select ROM bank */ bankaddress = 0x10000 + (data & 0x07) * 0x4000; memory_set_bankptr(space->machine(), "bank1", &RAM[bankaddress]); /* bits 3-5 select gfx bank */ bank = (data & 0x38) >> 3; if (state->m_gfxbank != bank) { state->m_gfxbank = bank; tilemap_mark_all_tiles_dirty_all(space->machine()); } /* bits 6-7 unknown */ } WRITE8_HANDLER( sichuan2_paletteram_w ) { shisen_state *state = space->machine().driver_data(); state->m_paletteram[offset] = data; offset &= 0xff; palette_set_color_rgb(space->machine(), offset, pal5bit(state->m_paletteram[offset + 0x000]), pal5bit(state->m_paletteram[offset + 0x100]), pal5bit(state->m_paletteram[offset + 0x200])); } static TILE_GET_INFO( get_bg_tile_info ) { shisen_state *state = machine.driver_data(); int offs = tile_index * 2; int code = state->m_videoram[offs] + ((state->m_videoram[offs + 1] & 0x0f) << 8) + (state->m_gfxbank << 12); int color = (state->m_videoram[offs + 1] & 0xf0) >> 4; SET_TILE_INFO(0, code, color, 0); } VIDEO_START( sichuan2 ) { shisen_state *state = machine.driver_data(); state->m_bg_tilemap = tilemap_create(machine, get_bg_tile_info, tilemap_scan_rows, 8, 8, 64, 32); } SCREEN_UPDATE( sichuan2 ) { shisen_state *state = screen->machine().driver_data(); // 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(screen->machine(), ~input_port_read(screen->machine(), "DSW2") & 1); tilemap_draw(bitmap, cliprect, state->m_bg_tilemap, 0, 0); return 0; }