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author Aaron Giles <aaron@aarongiles.com>2007-12-17 15:19:59 +0000
committer Aaron Giles <aaron@aarongiles.com>2007-12-17 15:19:59 +0000
commit7b77f1218624ea26dbb2efd85a19f795f5d4e02e (patch)
tree19209304095572b4fd61c2a2d6a5aa75c4e471ad /src/mame/video/superqix.c
parent3da7f476068b3ffef713218ba2fc1bd5030f2c38 (diff)
Initial checkin of MAME 0.121.mame0121
Diffstat (limited to 'src/mame/video/superqix.c')
-rw-r--r--src/mame/video/superqix.c260
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;
+}