/*************************************************************************** video.c Functions to emulate the video hardware of the machine. ***************************************************************************/ #include "driver.h" UINT8 *superqix_videoram; UINT8 *superqix_bitmapram,*superqix_bitmapram2; int pbillian_show_power; static int gfxbank; static mame_bitmap *fg_bitmap[2]; static int show_bitmap; static tilemap *bg_tilemap; /*************************************************************************** Callbacks for the TileMap code ***************************************************************************/ static TILE_GET_INFO( pb_get_bg_tile_info ) { int attr = superqix_videoram[tile_index + 0x400]; int code = superqix_videoram[tile_index] + 256 * (attr & 0x7); int color = (attr & 0xf0) >> 4; SET_TILE_INFO(0, code, color, 0); } static TILE_GET_INFO( sqix_get_bg_tile_info ) { int attr = superqix_videoram[tile_index + 0x400]; int bank = (attr & 0x04) ? 0 : 1; int code = superqix_videoram[tile_index] + 256 * (attr & 0x03); int color = (attr & 0xf0) >> 4; if (bank) code += 1024 * gfxbank; SET_TILE_INFO(bank, code, color, 0); tileinfo->group = (attr & 0x08) >> 3; } /*************************************************************************** Start the video hardware emulation. ***************************************************************************/ VIDEO_START( pbillian ) { bg_tilemap = tilemap_create(pb_get_bg_tile_info, tilemap_scan_rows, TILEMAP_TYPE_PEN, 8, 8,32,32); } VIDEO_START( superqix ) { fg_bitmap[0] = auto_bitmap_alloc(256, 256, machine->screen[0].format); fg_bitmap[1] = auto_bitmap_alloc(256, 256, machine->screen[0].format); bg_tilemap = tilemap_create(sqix_get_bg_tile_info, tilemap_scan_rows, TILEMAP_TYPE_PEN, 8, 8, 32, 32); tilemap_set_transmask(bg_tilemap,0,0xffff,0x0000); /* split type 0 is totally transparent in front half */ tilemap_set_transmask(bg_tilemap,1,0x0001,0xfffe); /* split type 1 has pen 0 transparent in front half */ } /*************************************************************************** Memory handlers ***************************************************************************/ WRITE8_HANDLER( superqix_videoram_w ) { superqix_videoram[offset] = data; tilemap_mark_tile_dirty(bg_tilemap, offset & 0x3ff); } WRITE8_HANDLER( superqix_bitmapram_w ) { if (superqix_bitmapram[offset] != data) { int x = 2 * (offset % 128); int y = offset / 128 + 16; superqix_bitmapram[offset] = data; *BITMAP_ADDR16(fg_bitmap[0], y, x + 0) = Machine->pens[data >> 4]; *BITMAP_ADDR16(fg_bitmap[0], y, x + 1) = Machine->pens[data & 0x0f]; } } WRITE8_HANDLER( superqix_bitmapram2_w ) { if (data != superqix_bitmapram2[offset]) { int x = 2 * (offset % 128); int y = offset / 128 + 16; superqix_bitmapram2[offset] = data; *BITMAP_ADDR16(fg_bitmap[1], y, x + 0) = Machine->pens[data >> 4]; *BITMAP_ADDR16(fg_bitmap[1], y, x + 1) = Machine->pens[data & 0x0f]; } } WRITE8_HANDLER( pbillian_0410_w ) { int bankaddress; UINT8 *rom = memory_region(REGION_CPU1); /* -------0 ? [not used] ------1- coin counter 1 -----2-- coin counter 2 ----3--- rom 2 HI (reserved for ROM banking , not used) ---4---- nmi enable/disable --5----- flip screen */ coin_counter_w(0,data & 0x02); coin_counter_w(1,data & 0x04); bankaddress = 0x10000 + ((data & 0x08) >> 3) * 0x4000; memory_set_bankptr(1,&rom[bankaddress]); interrupt_enable_w(0,data & 0x10); flip_screen_set(data & 0x20); } WRITE8_HANDLER( superqix_0410_w ) { int bankaddress; UINT8 *rom = memory_region(REGION_CPU1); /* bits 0-1 select the tile bank */ if (gfxbank != (data & 0x03)) { gfxbank = data & 0x03; tilemap_mark_all_tiles_dirty(bg_tilemap); } /* bit 2 selects which of the two bitmaps to display (for 2 players game) */ show_bitmap = (data & 0x04) >> 2; /* bit 3 enables NMI */ interrupt_enable_w(offset,data & 0x08); /* bits 4-5 control ROM bank */ bankaddress = 0x10000 + ((data & 0x30) >> 4) * 0x4000; memory_set_bankptr(1,&rom[bankaddress]); } /*************************************************************************** Display refresh ***************************************************************************/ static void pbillian_draw_sprites(running_machine *machine, mame_bitmap *bitmap, const rectangle *cliprect ) { int offs; for (offs = 0; offs < spriteram_size; offs += 4) { int attr = spriteram[offs + 3]; int code = ((spriteram[offs] & 0xfc) >> 2) + 64 * (attr & 0x0f); int color = (attr & 0xf0) >> 4; int sx = spriteram[offs + 1] + 256 * (spriteram[offs] & 0x01); int sy = spriteram[offs + 2]; if (flip_screen) { sx = 240 - sx; sy = 240 - sy; } drawgfx(bitmap,machine->gfx[1], code, color, flip_screen, flip_screen, sx, sy, cliprect, TRANSPARENCY_PEN, 0); } } static void superqix_draw_sprites(running_machine *machine, mame_bitmap *bitmap,const rectangle *cliprect) { int offs; for (offs = 0; offs < spriteram_size; offs += 4) { int attr = spriteram[offs + 3]; int code = spriteram[offs] + 256 * (attr & 0x01); int color = (attr & 0xf0) >> 4; int flipx = attr & 0x04; int flipy = attr & 0x08; int sx = spriteram[offs + 1]; int sy = spriteram[offs + 2]; if (flip_screen) { sx = 240 - sx; sy = 240 - sy; flipx = !flipx; flipy = !flipy; } drawgfx(bitmap,machine->gfx[2], code, color, flipx, flipy, sx, sy, cliprect, TRANSPARENCY_PEN, 0); } } VIDEO_UPDATE( pbillian ) { tilemap_draw(bitmap, cliprect, bg_tilemap, 0, 0); pbillian_draw_sprites(machine, bitmap,cliprect); if (pbillian_show_power) { static int last_power[2]; int curr_power; curr_power = ((readinputport(4)&0x3f)*100)/0x3f; if (last_power[0] != curr_power) { popmessage ("Power %d%%", curr_power); last_power[0] = curr_power; } curr_power = ((readinputport(6)&0x3f)*100)/0x3f; if (last_power[1] != curr_power) { popmessage ("Power %d%%", curr_power); last_power[1] = curr_power; } } return 0; } VIDEO_UPDATE( superqix ) { tilemap_draw(bitmap, cliprect, bg_tilemap, TILEMAP_DRAW_LAYER1, 0); copybitmap(bitmap,fg_bitmap[show_bitmap],flip_screen,flip_screen,0,0,cliprect,TRANSPARENCY_PEN,0); superqix_draw_sprites(machine, bitmap,cliprect); tilemap_draw(bitmap, cliprect, bg_tilemap, TILEMAP_DRAW_LAYER0, 0); return 0; }