/*************************************************************************** -= Kaneko 16 Bit Games =- driver by Luca Elia (l.elia@tin.it) [ 1 High Color Layer ] In ROM (Optional) [ Scrolling Layers ] Each VIEW2 chip generates 2 layers. Up to 2 chips are used (4 layers) Layer Size: 512 x 512 Tiles: 16 x 16 x 4 Line scroll is supported by the chip: each layer has RAM for 512 horizontal scroll offsets (one per tilemap line) that are added to the global scroll values. See e.g. blazeon (2nd demo level), mgcrystl, sandscrp. [ 1024 Sprites ] Sprites are 16 x 16 x 4 in the older games, 16 x 16 x 8 in gtmr & gtmr2. Sprites types 0 and 2 can also have a simple effect keeping sprites on the screen **************************************************************************/ #include "emu.h" #include "includes/kaneko16.h" #include "kan_pand.h" struct tempsprite { int code,color; int x,y; int xoffs,yoffs; int flipx,flipy; int priority; }; WRITE16_HANDLER( kaneko16_display_enable ) { kaneko16_state *state = space->machine().driver_data(); COMBINE_DATA(&state->m_disp_enable); } /*************************************************************************** Callbacks for the TileMap code [ Tiles Format ] Offset: 0000.w fedc b--- ---- ---- unused? ---- -a9- ---- ---- High Priority (vs Sprites) ---- ---8 ---- ---- High Priority (vs Tiles) ---- ---- 7654 32-- Color ---- ---- ---- --1- Flip X ---- ---- ---- ---0 Flip Y 0002.w Code ***************************************************************************/ INLINE void get_tile_info(running_machine &machine, tile_data *tileinfo, tilemap_memory_index tile_index, int _N_) { kaneko16_state *state = machine.driver_data(); UINT16 code_hi = state->m_vram[_N_][ 2 * tile_index + 0]; UINT16 code_lo = state->m_vram[_N_][ 2 * tile_index + 1]; SET_TILE_INFO(1 + _N_/2, code_lo, (code_hi >> 2) & 0x3f, TILE_FLIPXY( code_hi & 3 )); tileinfo->category = (code_hi >> 8) & 7; } static TILE_GET_INFO( get_tile_info_0 ) { get_tile_info(machine, tileinfo, tile_index, 0); } static TILE_GET_INFO( get_tile_info_1 ) { get_tile_info(machine, tileinfo, tile_index, 1); } static TILE_GET_INFO( get_tile_info_2 ) { get_tile_info(machine, tileinfo, tile_index, 2); } static TILE_GET_INFO( get_tile_info_3 ) { get_tile_info(machine, tileinfo, tile_index, 3); } INLINE void kaneko16_vram_w(address_space *space, offs_t offset, UINT16 data, UINT16 mem_mask, int _N_) { kaneko16_state *state = space->machine().driver_data(); COMBINE_DATA(&state->m_vram[_N_][offset]); tilemap_mark_tile_dirty(state->m_tmap[_N_], offset/2); } WRITE16_HANDLER( kaneko16_vram_0_w ) { kaneko16_vram_w(space, offset, data, mem_mask, 0); } WRITE16_HANDLER( kaneko16_vram_1_w ) { kaneko16_vram_w(space, offset, data, mem_mask, 1); } WRITE16_HANDLER( kaneko16_vram_2_w ) { kaneko16_vram_w(space, offset, data, mem_mask, 2); } WRITE16_HANDLER( kaneko16_vram_3_w ) { kaneko16_vram_w(space, offset, data, mem_mask, 3); } VIDEO_START( kaneko16_sprites ) { kaneko16_state *state = machine.driver_data(); state->m_disp_enable = 1; // default enabled for games not using it state->m_keep_sprites = 0; // default disabled for games not using it /* 0x400 sprites max */ state->m_first_sprite = auto_alloc_array(machine, struct tempsprite, 0x400); } VIDEO_START( kaneko16_1xVIEW2_tilemaps ) { kaneko16_state *state = machine.driver_data(); state->m_disp_enable = 1; // default enabled for games not using it state->m_keep_sprites = 0; // default disabled for games not using it state->m_tmap[0] = tilemap_create( machine, get_tile_info_0, tilemap_scan_rows, 16,16, 0x20,0x20 ); state->m_tmap[1] = tilemap_create( machine, get_tile_info_1, tilemap_scan_rows, 16,16, 0x20,0x20 ); state->m_tmap[2] = 0; state->m_tmap[3] = 0; state->m_sprites_bitmap = machine.primary_screen->alloc_compatible_bitmap(); { int dx, dy; int xdim = machine.primary_screen->width(); int ydim = machine.primary_screen->height(); switch (xdim) { case 320: dx = 0x33; break; case 256: dx = 0x5b; break; default: dx = 0; } switch (machine.primary_screen->visible_area().max_y - machine.primary_screen->visible_area().min_y + 1) { case 240- 8: dy = +0x08; break; /* blazeon */ case 240-16: dy = -0x08; break; /* berlwall, bakubrk */ default: dy = 0; } tilemap_set_scrolldx( state->m_tmap[0], -dx, xdim + dx -1 ); tilemap_set_scrolldx( state->m_tmap[1], -(dx+2), xdim + (dx + 2) - 1 ); tilemap_set_scrolldy( state->m_tmap[0], -dy, ydim + dy -1 ); tilemap_set_scrolldy( state->m_tmap[1], -dy, ydim + dy -1 ); tilemap_set_transparent_pen(state->m_tmap[0], 0); tilemap_set_transparent_pen(state->m_tmap[1], 0); tilemap_set_scroll_rows(state->m_tmap[0], 0x200); // Line Scroll tilemap_set_scroll_rows(state->m_tmap[1], 0x200); } } VIDEO_START( kaneko16_1xVIEW2 ) { VIDEO_START_CALL(kaneko16_sprites); VIDEO_START_CALL(kaneko16_1xVIEW2_tilemaps); } VIDEO_START( kaneko16_2xVIEW2 ) { kaneko16_state *state = machine.driver_data(); VIDEO_START_CALL(kaneko16_1xVIEW2); state->m_tmap[2] = tilemap_create( machine, get_tile_info_2, tilemap_scan_rows, 16,16, 0x20,0x20 ); state->m_tmap[3] = tilemap_create( machine, get_tile_info_3, tilemap_scan_rows, 16,16, 0x20,0x20 ); { int dx, dy; int xdim = machine.primary_screen->width(); int ydim = machine.primary_screen->height(); switch (xdim) { case 320: dx = 0x33; break; case 256: dx = 0x5b; break; default: dx = 0; } switch (machine.primary_screen->visible_area().max_y - machine.primary_screen->visible_area().min_y + 1) { case 240- 8: dy = +0x08; break; case 240-16: dy = -0x08; break; default: dy = 0; } tilemap_set_scrolldx( state->m_tmap[2], -dx, xdim + dx -1 ); tilemap_set_scrolldx( state->m_tmap[3], -(dx+2), xdim + (dx + 2) - 1 ); tilemap_set_scrolldy( state->m_tmap[2], -dy, ydim + dy -1 ); tilemap_set_scrolldy( state->m_tmap[3], -dy, ydim + dy -1 ); tilemap_set_transparent_pen(state->m_tmap[2], 0); tilemap_set_transparent_pen(state->m_tmap[3], 0); tilemap_set_scroll_rows(state->m_tmap[2], 0x200); // Line Scroll tilemap_set_scroll_rows(state->m_tmap[3], 0x200); } } VIDEO_START( sandscrp_1xVIEW2 ) { kaneko16_state *state = machine.driver_data(); VIDEO_START_CALL(kaneko16_1xVIEW2); tilemap_set_scrolldy( state->m_tmap[0], 0, 256 - 1 ); tilemap_set_scrolldy( state->m_tmap[1], 0, 256 - 1 ); } /* Berlwall and Gals Panic have an additional hi-color layers */ PALETTE_INIT( berlwall ) { int i; /* first 2048 colors are dynamic */ /* initialize 555 RGB lookup */ for (i = 0; i < 32768; i++) palette_set_color_rgb(machine,2048 + i,pal5bit(i >> 5),pal5bit(i >> 10),pal5bit(i >> 0)); } VIDEO_START( berlwall ) { kaneko16_state *state = machine.driver_data(); int sx, x,y; UINT8 *RAM = machine.region("gfx3")->base(); /* Render the hi-color static backgrounds held in the ROMs */ state->m_bg15_bitmap = auto_bitmap_alloc(machine, 256 * 32, 256 * 1, BITMAP_FORMAT_INDEXED16); /* 8aba is used as background color 8aba/2 = 455d = 10001 01010 11101 = $11 $0a $1d */ for (sx = 0 ; sx < 32 ; sx++) // horizontal screens for (x = 0 ; x < 256 ; x++) // horizontal pixels for (y = 0 ; y < 256 ; y++) // vertical pixels { int addr = sx * (256 * 256) + x + y * 256; int data = RAM[addr * 2 + 0] * 256 + RAM[addr * 2 + 1]; int r,g,b; r = (data & 0x07c0) >> 6; g = (data & 0xf800) >> 11; b = (data & 0x003e) >> 1; /* apply a simple decryption */ r ^= 0x09; if (~g & 0x08) g ^= 0x10; g = (g - 1) & 0x1f; /* decrease with wraparound */ b ^= 0x03; if (~b & 0x08) b ^= 0x10; b = (b + 2) & 0x1f; /* increase with wraparound */ /* kludge to fix the rollercoaster picture */ if ((r & 0x10) && (b & 0x10)) g = (g - 1) & 0x1f; /* decrease with wraparound */ *BITMAP_ADDR16(state->m_bg15_bitmap, y, sx * 256 + x) = 2048 + ((g << 10) | (r << 5) | b); } VIDEO_START_CALL(kaneko16_1xVIEW2); } VIDEO_START( galsnew ) { kaneko16_state *state = machine.driver_data(); VIDEO_START_CALL(kaneko16_sprites); state->m_tmap[0] = tilemap_create( machine, get_tile_info_0, tilemap_scan_rows, 16,16, 0x20,0x20 ); state->m_tmap[1] = tilemap_create( machine, get_tile_info_1, tilemap_scan_rows, 16,16, 0x20,0x20 ); state->m_tmap[2] = 0; state->m_tmap[3] = 0; state->m_sprites_bitmap = machine.primary_screen->alloc_compatible_bitmap(); { int dx = 0x5b, dy = 8; int xdim = machine.primary_screen->width(); int ydim = machine.primary_screen->height(); tilemap_set_scrolldx( state->m_tmap[0], -dx, xdim + dx -1 ); tilemap_set_scrolldx( state->m_tmap[1], -(dx+2), xdim + (dx + 2) - 1 ); tilemap_set_scrolldy( state->m_tmap[0], -dy, ydim + dy -1 ); tilemap_set_scrolldy( state->m_tmap[1], -dy, ydim + dy -1 ); tilemap_set_transparent_pen(state->m_tmap[0], 0); tilemap_set_transparent_pen(state->m_tmap[1], 0); tilemap_set_scroll_rows(state->m_tmap[0], 0x200); // Line Scroll tilemap_set_scroll_rows(state->m_tmap[1], 0x200); } } /*************************************************************************** Sprites Drawing Sprite data is layed out in RAM in different ways for different games (type 0,1,2,etc.). This basically involves the bits in the attribute word to be shuffled around and/or the words being in different order. Each sprite is always stuffed in 4 words. There may be some extra padding words though (e.g. type 2 sprites are like type 0 but the data is held in the last 8 bytes of every 16). Examples are: Type 0: shogwarr, blazeon, bakubrkr. Type 1: gtmr. Type 2: berlwall Offset: Format: Value: 0000.w Attribute (type 0 & 2) f--- ---- ---- ---- Multisprite: Use Latched Code + 1 -e-- ---- ---- ---- Multisprite: Use Latched Color (And Flip?) --d- ---- ---- ---- Multisprite: Use Latched X,Y As Offsets ---c ba-- ---- ---- ---- --9- ---- ---- High Priority (vs FG Tiles Of High Priority) ---- ---8 ---- ---- High Priority (vs BG Tiles Of High Priority) ---- ---- 7654 32-- Color ---- ---- ---- --1- X Flip ---- ---- ---- ---0 Y Flip Attribute (type 1) f--- ---- ---- ---- Multisprite: Use Latched Code + 1 -e-- ---- ---- ---- Multisprite: Use Latched Color (And Flip?) --d- ---- ---- ---- Multisprite: Use Latched X,Y As Offsets ---c ba-- ---- ---- ---- --9- ---- ---- X Flip ---- ---8 ---- ---- Y Flip ---- ---- 7--- ---- High Priority (vs FG Tiles Of High Priority) ---- ---- -6-- ---- High Priority (vs BG Tiles Of High Priority) ---- ---- --54 3210 Color 0002.w Code 0004.w X Position << 6 0006.w Y Position << 6 ***************************************************************************/ #define USE_LATCHED_XY 1 #define USE_LATCHED_CODE 2 #define USE_LATCHED_COLOR 4 static int kaneko16_parse_sprite_type012(running_machine &machine, int i, struct tempsprite *s) { kaneko16_state *state = machine.driver_data(); UINT16 *spriteram16 = machine.generic.spriteram.u16; int attr, xoffs, offs; if (state->m_sprite_type == 2) offs = i * 16/2 + 0x8/2; else offs = i * 8/2; if (offs >= (machine.generic.spriteram_size/2)) return -1; attr = spriteram16[offs + 0]; s->code = spriteram16[offs + 1]; s->x = spriteram16[offs + 2]; s->y = spriteram16[offs + 3]; if (state->m_sprite_type == 1) { s->color = (attr & 0x003f); s->priority = (attr & 0x00c0) >> 6; s->flipy = (attr & 0x0100); s->flipx = (attr & 0x0200); s->code += (s->y & 1) << 16; // bloodwar } else { s->flipy = (attr & 0x0001); s->flipx = (attr & 0x0002); s->color = (attr & 0x00fc) >> 2; s->priority = (attr & 0x0300) >> 8; } xoffs = (attr & 0x1800) >> 11; s->yoffs = state->m_sprites_regs[0x10/2 + xoffs*2 + 1]; s->xoffs = state->m_sprites_regs[0x10/2 + xoffs*2 + 0]; if (state->m_sprite_flipy) { s->yoffs -= state->m_sprites_regs[0x2/2]; s->yoffs -= machine.primary_screen->visible_area().min_y<<6; } else { s->yoffs -= state->m_sprites_regs[0x2/2]; s->yoffs += machine.primary_screen->visible_area().min_y<<6; } return ( (attr & 0x2000) ? USE_LATCHED_XY : 0 ) | ( (attr & 0x4000) ? USE_LATCHED_COLOR : 0 ) | ( (attr & 0x8000) ? USE_LATCHED_CODE : 0 ) ; } // custom function to draw a single sprite. needed to keep correct sprites - sprites and sprites - tilemaps priorities static void kaneko16_draw_sprites_custom(bitmap_t *dest_bmp,const rectangle *clip,const gfx_element *gfx, UINT32 code,UINT32 color,int flipx,int flipy,int sx,int sy, int priority) { pen_t pen_base = gfx->color_base + gfx->color_granularity * (color % gfx->total_colors); const UINT8 *source_base = gfx_element_get_data(gfx, code % gfx->total_elements); bitmap_t *priority_bitmap = gfx->machine().priority_bitmap; int sprite_screen_height = ((1<<16)*gfx->height+0x8000)>>16; int sprite_screen_width = ((1<<16)*gfx->width+0x8000)>>16; if (sprite_screen_width && sprite_screen_height) { /* compute sprite increment per screen pixel */ int dx = (gfx->width<<16)/sprite_screen_width; int dy = (gfx->height<<16)/sprite_screen_height; int ex = sx+sprite_screen_width; int ey = sy+sprite_screen_height; int x_index_base; int y_index; if( flipx ) { x_index_base = (sprite_screen_width-1)*dx; dx = -dx; } else { x_index_base = 0; } if( flipy ) { y_index = (sprite_screen_height-1)*dy; dy = -dy; } else { y_index = 0; } if( clip ) { if( sx < clip->min_x) { /* clip left */ int pixels = clip->min_x-sx; sx += pixels; x_index_base += pixels*dx; } if( sy < clip->min_y ) { /* clip top */ int pixels = clip->min_y-sy; sy += pixels; y_index += pixels*dy; } /* NS 980211 - fixed incorrect clipping */ if( ex > clip->max_x+1 ) { /* clip right */ int pixels = ex-clip->max_x-1; ex -= pixels; } if( ey > clip->max_y+1 ) { /* clip bottom */ int pixels = ey-clip->max_y-1; ey -= pixels; } } if( ex>sx ) { /* skip if inner loop doesn't draw anything */ int y; for( y=sy; y>16) * gfx->line_modulo; UINT16 *dest = BITMAP_ADDR16(dest_bmp, y, 0); UINT8 *pri = BITMAP_ADDR8(priority_bitmap, y, 0); int x, x_index = x_index_base; for( x=sx; x>16]; if( c != 0 ) { if (pri[x] < priority) dest[x] = pen_base + c; pri[x] = 0xff; // mark it "already drawn" } x_index += dx; } y_index += dy; } } } } /* Build a list of sprites to display & draw them */ void kaneko16_draw_sprites(running_machine &machine, bitmap_t *bitmap, const rectangle *cliprect) { kaneko16_state *state = machine.driver_data(); /* Sprites *must* be parsed from the first in RAM to the last, because of the multisprite feature. But they *must* be drawn from the last in RAM (frontmost) to the first in order to cope with priorities using pdrawgfx. Hence we parse them from first to last and put the result in a temp buffer, then draw the buffer's contents from last to first. */ int max = (machine.primary_screen->width() > 0x100) ? (0x200<<6) : (0x100<<6); int i = 0; struct tempsprite *s = state->m_first_sprite; /* These values are latched from the last sprite. */ int x = 0; int y = 0; int code = 0; int color = 0; int priority = 0; int xoffs = 0; int yoffs = 0; int flipx = 0; int flipy = 0; while (1) { int flags; switch( state->m_sprite_type ) { case 0: case 1: case 2: flags = kaneko16_parse_sprite_type012(machine, i,s); break; default: flags = -1; } if (flags == -1) // End of Sprites break; if (flags & USE_LATCHED_CODE) s->code = ++code; // Use the latched code + 1 .. else code = s->code; // .. or latch this value if (flags & USE_LATCHED_COLOR) { s->color = color; s->priority = priority; s->xoffs = xoffs; s->yoffs = yoffs; if (state->m_sprite_fliptype==0) { s->flipx = flipx; s->flipy = flipy; } } else { color = s->color; priority = s->priority; xoffs = s->xoffs; yoffs = s->yoffs; if (state->m_sprite_fliptype==0) { flipx = s->flipx; flipy = s->flipy; } } // brap boys explicitly doesn't want the flip to be latched, maybe there is a different bit to enable that behavior? if (state->m_sprite_fliptype==1) { flipx = s->flipx; flipy = s->flipy; } if (flags & USE_LATCHED_XY) { s->x += x; s->y += y; } // Always latch the latest result x = s->x; y = s->y; /* We can now buffer this sprite */ s->x = s->xoffs + s->x; s->y = s->yoffs + s->y; s->x += state->m_sprite_xoffs; s->y += state->m_sprite_yoffs; if (state->m_sprite_flipx) { s->x = max - s->x - (16<<6); s->flipx = !s->flipx; } if (state->m_sprite_flipy) { s->y = max - s->y - (16<<6); s->flipy = !s->flipy; } s->x = ( (s->x & 0x7fc0) - (s->x & 0x8000) ) / 0x40; s->y = ( (s->y & 0x7fc0) - (s->y & 0x8000) ) / 0x40; i++; s++; } /* Let's finally draw the sprites we buffered, in reverse order (for pdrawgfx) */ for (s--; s >= state->m_first_sprite; s--) { int curr_pri = s->priority; UINT32 primask = state->m_priority.sprite[curr_pri]; kaneko16_draw_sprites_custom( bitmap,cliprect,machine.gfx[0], s->code, s->color, s->flipx, s->flipy, s->x, s->y, primask ); } } /*************************************************************************** Sprites Registers Offset: Format: Value: 0000.w f--- ---- ---- ---- Sprites Disable?? (see blazeon) -edc ba98 7654 3--- ---- ---- ---- -2-- Keep sprites on screen (only sprites types 0 and 2) ---- ---- ---- --1- Flip X ---- ---- ---- ---0 Flip Y 0002.w Y Offset << 6 (Global) 0004..000e.w ? 0010.w X Offset << 6 #0 0012.w Y Offset << 6 #0 0014.w X Offset << 6 #1 0016.w Y Offset << 6 #1 0018.w X Offset << 6 #2 001a.w Y Offset << 6 #2 001c.w X Offset << 6 #3 001e.w Y Offset << 6 #3 ***************************************************************************/ /* [gtmr] Initial self test: 600000: 4BC0 94C0 4C40 94C0-0404 0002 0000 0000 (Layers 1 regs) 680000: 4BC0 94C0 4C40 94C0-1C1C 0002 0000 0000 (Layers 2 regs) Race start: 600000: DC00 7D00 DC80 7D00-0404 0002 0000 0000 (Layers 1 regs) 680000: DC00 7D00 DC80 7D00-1C1C 0002 0000 0000 (Layers 2 regs) [gtmr] 700000: 0040 0000 0001 0180-0000 0000 0000 0000 (Sprites regs) 700010: 0040 0000 0040 0000-0040 0000 2840 1E00 ; 1,0 .. a1,78 ; a0*2=screenx/2 ; 78*2=screeny/2 FLIP ON: 700000: 0043 FFC0 0001 0180-0000 0000 0000 0000 (Sprites regs) 700010: 2FC0 4400 2FC0 4400-2FC0 4400 57C0 6200 ; bf,110 .. 15f,188 ; 15f-bf=a0! 188-110=78! [berlwall] 600000: 48CC 03C0 0001 0100-0000 0000 0000 0000 (Sprites regs) 600010: 0000 0000 0000 0000-0000 0000 0000 0000 FLIP ON: 600000: 48CF FC00 0001 0100-0000 0000 0000 0000 (Sprites regs) 600010: 0000 0000 0000 0000-0000 0000 0000 0000 [mgcrystl] 900000: 4FCC 0000 0040 00C0-xxxx 0001 0001 0001 (Sprites regs) 900010: 0000 FC40 A000 9C40-1E00 1A40 0000 FC40 FLIP ON: 900000: 4FCF 0000 0040 00C0-xxxx 0001 0001 0001 (Sprites regs) 900010: 0000 0400 A000 A400-1E00 2200 0000 0400 ; +1f<<6 on y */ READ16_HANDLER( kaneko16_sprites_regs_r ) { kaneko16_state *state = space->machine().driver_data(); return state->m_sprites_regs[offset]; } WRITE16_HANDLER( kaneko16_sprites_regs_w ) { kaneko16_state *state = space->machine().driver_data(); UINT16 new_data; COMBINE_DATA(&state->m_sprites_regs[offset]); new_data = state->m_sprites_regs[offset]; switch (offset) { case 0: if (ACCESSING_BITS_0_7) { state->m_sprite_flipx = new_data & 2; state->m_sprite_flipy = new_data & 1; if(state->m_sprite_type == 0 || state->m_sprite_type == 2) state->m_keep_sprites = ~new_data & 4; } break; } // logerror("CPU #0 PC %06X : Warning, sprites reg %04X <- %04X\n",cpu_get_pc(&space->device()),offset*2,data); } /*************************************************************************** Layers Registers Offset: Format: Value: 0000.w FG Scroll X 0002.w FG Scroll Y 0004.w BG Scroll X 0006.w BG Scroll Y 0008.w Layers Control fed- ---- ---- ---- ---c ---- ---- ---- BG Disable ---- b--- ---- ---- Line Scroll (Always 1 in berlwall & bakubrkr) ---- -a-- ---- ---- ? Always 1 in gtmr & bakubrkr ? ---- --9- ---- ---- BG Flip X ---- ---8 ---- ---- BG Flip Y ---- ---- 765- ---- ---- ---- ---4 ---- FG Disable ---- ---- ---- 3--- Line Scroll (Always 1 in berlwall & bakubrkr) ---- ---- ---- -2-- ? Always 1 in gtmr & bakubrkr ? ---- ---- ---- --1- FG Flip X ---- ---- ---- ---0 FG Flip Y 000a.w ? always 0x0002 ? There are more! ***************************************************************************/ /* [gtmr] car select screen scroll values: Flipscreen off: $6x0000: $72c0 ; $fbc0 ; 7340 ; 0 $72c0/$40 = $1cb = $200-$35 / $7340/$40 = $1cd = $1cb+2 $fbc0/$40 = -$11 Flipscreen on: $6x0000: $5d00 ; $3780 ; $5c80 ; $3bc0 $5d00/$40 = $174 = $200-$8c / $5c80/$40 = $172 = $174-2 $3780/$40 = $de / $3bc0/$40 = $ef */ WRITE16_HANDLER( kaneko16_layers_0_regs_w ) { kaneko16_state *state = space->machine().driver_data(); COMBINE_DATA(&state->m_layers_0_regs[offset]); } WRITE16_HANDLER( kaneko16_layers_1_regs_w ) { kaneko16_state *state = space->machine().driver_data(); COMBINE_DATA(&state->m_layers_1_regs[offset]); } /* Select the high color background image (out of 32 in the ROMs) */ READ16_HANDLER( kaneko16_bg15_select_r ) { kaneko16_state *state = space->machine().driver_data(); return state->m_bg15_select[0]; } WRITE16_HANDLER( kaneko16_bg15_select_w ) { kaneko16_state *state = space->machine().driver_data(); COMBINE_DATA(&state->m_bg15_select[0]); } /* ? */ READ16_HANDLER( kaneko16_bg15_reg_r ) { kaneko16_state *state = space->machine().driver_data(); return state->m_bg15_reg[0]; } WRITE16_HANDLER( kaneko16_bg15_reg_w ) { kaneko16_state *state = space->machine().driver_data(); COMBINE_DATA(&state->m_bg15_reg[0]); } /*************************************************************************** Screen Drawing ***************************************************************************/ static void kaneko16_prepare_first_tilemap_chip(running_machine &machine, bitmap_t *bitmap, const rectangle *cliprect) { kaneko16_state *state = machine.driver_data(); /* Set Up FIRST Tilemap chip */ int layers_flip_0; UINT16 layer0_scrollx, layer0_scrolly; UINT16 layer1_scrollx, layer1_scrolly; int i; layers_flip_0 = state->m_layers_0_regs[ 4 ]; /* Enable layers */ tilemap_set_enable(state->m_tmap[0], ~layers_flip_0 & 0x1000); tilemap_set_enable(state->m_tmap[1], ~layers_flip_0 & 0x0010); /* Flip layers */ tilemap_set_flip(state->m_tmap[0], ((layers_flip_0 & 0x0100) ? TILEMAP_FLIPY : 0) | ((layers_flip_0 & 0x0200) ? TILEMAP_FLIPX : 0) ); tilemap_set_flip(state->m_tmap[1], ((layers_flip_0 & 0x0100) ? TILEMAP_FLIPY : 0) | ((layers_flip_0 & 0x0200) ? TILEMAP_FLIPX : 0) ); /* Scroll layers */ layer0_scrollx = state->m_layers_0_regs[ 2 ]; layer0_scrolly = state->m_layers_0_regs[ 3 ] >> 6; layer1_scrollx = state->m_layers_0_regs[ 0 ]; layer1_scrolly = state->m_layers_0_regs[ 1 ] >> 6; tilemap_set_scrolly(state->m_tmap[0],0,layer0_scrolly); tilemap_set_scrolly(state->m_tmap[1],0,layer1_scrolly); for (i=0; i<0x200; i++) { UINT16 scroll; scroll = (layers_flip_0 & 0x0800) ? state->m_vscroll[0][i] : 0; tilemap_set_scrollx(state->m_tmap[0],i,(layer0_scrollx + scroll) >> 6 ); scroll = (layers_flip_0 & 0x0008) ? state->m_vscroll[1][i] : 0; tilemap_set_scrollx(state->m_tmap[1],i,(layer1_scrollx + scroll) >> 6 ); } } static void kaneko16_prepare_second_tilemap_chip(running_machine &machine, bitmap_t *bitmap, const rectangle *cliprect) { kaneko16_state *state = machine.driver_data(); /* Set Up SECOND Tilemap chip */ int layers_flip_1 = 0; UINT16 layer0_scrollx, layer0_scrolly; UINT16 layer1_scrollx, layer1_scrolly; int i; if (state->m_tmap[2]) { layers_flip_1 = state->m_layers_1_regs[ 4 ]; tilemap_set_enable(state->m_tmap[2], ~layers_flip_1 & 0x1000); tilemap_set_enable(state->m_tmap[3], ~layers_flip_1 & 0x0010); tilemap_set_flip(state->m_tmap[2], ((layers_flip_1 & 0x0100) ? TILEMAP_FLIPY : 0) | ((layers_flip_1 & 0x0200) ? TILEMAP_FLIPX : 0) ); tilemap_set_flip(state->m_tmap[3], ((layers_flip_1 & 0x0100) ? TILEMAP_FLIPY : 0) | ((layers_flip_1 & 0x0200) ? TILEMAP_FLIPX : 0) ); layer0_scrollx = state->m_layers_1_regs[ 2 ]; layer0_scrolly = state->m_layers_1_regs[ 3 ] >> 6; layer1_scrollx = state->m_layers_1_regs[ 0 ]; layer1_scrolly = state->m_layers_1_regs[ 1 ] >> 6; tilemap_set_scrolly(state->m_tmap[2],0,layer0_scrolly); tilemap_set_scrolly(state->m_tmap[3],0,layer1_scrolly); for (i=0; i<0x200; i++) { UINT16 scroll; scroll = (layers_flip_1 & 0x0800) ? state->m_vscroll[2][i] : 0; tilemap_set_scrollx(state->m_tmap[2],i,(layer0_scrollx + scroll) >> 6 ); scroll = (layers_flip_1 & 0x0008) ? state->m_vscroll[3][i] : 0; tilemap_set_scrollx(state->m_tmap[3],i,(layer1_scrollx + scroll) >> 6 ); } } } static void kaneko16_render_first_tilemap_chip(running_machine &machine, bitmap_t *bitmap, const rectangle *cliprect, int pri) { kaneko16_state *state = machine.driver_data(); tilemap_draw_primask(bitmap,cliprect, state->m_tmap[0], pri, pri, 0); tilemap_draw_primask(bitmap,cliprect, state->m_tmap[1], pri, pri, 0); } static void kaneko16_render_second_tilemap_chip(running_machine &machine, bitmap_t *bitmap, const rectangle *cliprect, int pri) { kaneko16_state *state = machine.driver_data(); if (state->m_tmap[2]) { tilemap_draw_primask(bitmap,cliprect, state->m_tmap[2], pri, state->m_priority.VIEW2_2_pri ? pri : 0, 0); tilemap_draw_primask(bitmap,cliprect, state->m_tmap[3], pri, state->m_priority.VIEW2_2_pri ? pri : 0, 0); } } static void kaneko16_render_sprites(running_machine &machine, bitmap_t *bitmap, const rectangle *cliprect) { kaneko16_state *state = machine.driver_data(); /* Sprites last (rendered with pdrawgfx, so they can slip in between the layers) */ if(state->m_keep_sprites) { /* keep sprites on screen */ kaneko16_draw_sprites(machine,state->m_sprites_bitmap,cliprect); copybitmap_trans(bitmap,state->m_sprites_bitmap,0,0,0,0,cliprect,0); } else { bitmap_fill(state->m_sprites_bitmap,cliprect,0); kaneko16_draw_sprites(machine,bitmap,cliprect); } } static void kaneko16_render_15bpp_bitmap(running_machine &machine, bitmap_t *bitmap, const rectangle *cliprect) { kaneko16_state *state = machine.driver_data(); if (state->m_bg15_bitmap) { int select = state->m_bg15_select[ 0 ]; // int reg = state->m_bg15_reg[ 0 ]; int flip = select & 0x20; int sx, sy; if (flip) select ^= 0x1f; sx = (select & 0x1f) * 256; sy = 0; copybitmap(bitmap, state->m_bg15_bitmap, flip, flip, -sx, -sy, cliprect); // flag = 0; } } static void kaneko16_fill_bitmap(running_machine &machine, bitmap_t *bitmap, const rectangle *cliprect) { kaneko16_state *state = machine.driver_data(); if(state->m_sprite_type == 1) bitmap_fill(bitmap,cliprect,0x7f00); else /* Fill the bitmap with pen 0. This is wrong, but will work most of the times. To do it right, each pixel should be drawn with pen 0 of the bottomost tile that covers it (which is pretty tricky to do) */ bitmap_fill(bitmap,cliprect,0); } static SCREEN_UPDATE( common ) { int i; bitmap_fill(screen->machine().priority_bitmap,cliprect,0); kaneko16_prepare_first_tilemap_chip(screen->machine(), bitmap, cliprect); kaneko16_prepare_second_tilemap_chip(screen->machine(), bitmap, cliprect); for ( i = 0; i < 8; i++ ) { kaneko16_render_first_tilemap_chip(screen->machine(),bitmap,cliprect,i); kaneko16_render_second_tilemap_chip(screen->machine(),bitmap,cliprect,i); } return 0; } SCREEN_UPDATE(berlwall) { kaneko16_state *state = screen->machine().driver_data(); // berlwall uses a 15bpp bitmap as a bg, not a solid fill kaneko16_render_15bpp_bitmap(screen->machine(),bitmap,cliprect); // if the display is disabled, do nothing? if (!state->m_disp_enable) return 0; SCREEN_UPDATE_CALL(common); kaneko16_render_sprites(screen->machine(),bitmap,cliprect); return 0; } SCREEN_UPDATE( jchan_view2 ) { kaneko16_state *state = screen->machine().driver_data(); int dx,dy; SCREEN_UPDATE_CALL(common); /* override the offsets set in common - tuned to char select in jchan2 */ dx = 25;dy = 11; tilemap_set_scrolldx( state->m_tmap[0], -dx, 320 + dx -1 ); tilemap_set_scrolldx( state->m_tmap[1], -(dx+2), 320 + (dx + 2) - 1 ); tilemap_set_scrolldy( state->m_tmap[0], -dy, 240 + dy -1 ); tilemap_set_scrolldy( state->m_tmap[1], -dy, 240 + dy -1 ); return 0; } SCREEN_UPDATE( kaneko16 ) { kaneko16_state *state = screen->machine().driver_data(); kaneko16_fill_bitmap(screen->machine(),bitmap,cliprect); // if the display is disabled, do nothing? if (!state->m_disp_enable) return 0; SCREEN_UPDATE_CALL(common); kaneko16_render_sprites(screen->machine(),bitmap,cliprect); return 0; } SCREEN_UPDATE( galsnew ) { kaneko16_state *state = screen->machine().driver_data(); // kaneko16_fill_bitmap(screen->machine(),bitmap,cliprect); int y,x; int count; count = 0; for (y=0;y<256;y++) { UINT16 *dest = BITMAP_ADDR16(bitmap, y, 0); for (x=0;x<256;x++) { UINT16 dat = (state->m_galsnew_fg_pixram[count] & 0xfffe)>>1; dat+=2048; dest[x] = dat; count++; } } count = 0; for (y=0;y<256;y++) { UINT16 *dest = BITMAP_ADDR16(bitmap, y, 0); for (x=0;x<256;x++) { UINT16 dat = (state->m_galsnew_bg_pixram[count]); //dat &=0x3ff; if (dat) dest[x] = dat; count++; } } // if the display is disabled, do nothing? if (!state->m_disp_enable) return 0; SCREEN_UPDATE_CALL(common); kaneko16_render_sprites(screen->machine(),bitmap,cliprect); return 0; } SCREEN_UPDATE( sandscrp ) { kaneko16_state *state = screen->machine().driver_data(); device_t *pandora = screen->machine().device("pandora"); kaneko16_fill_bitmap(screen->machine(),bitmap,cliprect); // if the display is disabled, do nothing? if (!state->m_disp_enable) return 0; SCREEN_UPDATE_CALL(common); // copy sprite bitmap to screen pandora_update(pandora, bitmap, cliprect); return 0; }