diff options
author | Aaron Giles <aaron@aarongiles.com> | 2007-12-17 15:19:59 +0000 |
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committer | Aaron Giles <aaron@aarongiles.com> | 2007-12-17 15:19:59 +0000 |
commit | 7b77f1218624ea26dbb2efd85a19f795f5d4e02e (patch) | |
tree | 19209304095572b4fd61c2a2d6a5aa75c4e471ad /src/mame/video/superqix.c | |
parent | 3da7f476068b3ffef713218ba2fc1bd5030f2c38 (diff) |
Initial checkin of MAME 0.121.mame0121
Diffstat (limited to 'src/mame/video/superqix.c')
-rw-r--r-- | src/mame/video/superqix.c | 260 |
1 files changed, 260 insertions, 0 deletions
diff --git a/src/mame/video/superqix.c b/src/mame/video/superqix.c new file mode 100644 index 00000000000..b63d9149b6f --- /dev/null +++ b/src/mame/video/superqix.c @@ -0,0 +1,260 @@ +/*************************************************************************** + + 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; +} |