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Diffstat (limited to 'src/mame/video/drgnmst.c')
-rw-r--r--src/mame/video/drgnmst.c209
1 files changed, 209 insertions, 0 deletions
diff --git a/src/mame/video/drgnmst.c b/src/mame/video/drgnmst.c
new file mode 100644
index 00000000000..0aadf24ae73
--- /dev/null
+++ b/src/mame/video/drgnmst.c
@@ -0,0 +1,209 @@
+// remaining gfx glitches
+
+// layer priority register not fully understood
+
+#include "driver.h"
+
+extern UINT16 *drgnmst_vidregs;
+
+extern UINT16 *drgnmst_fg_videoram;
+static tilemap *drgnmst_fg_tilemap;
+extern UINT16 *drgnmst_bg_videoram;
+static tilemap *drgnmst_bg_tilemap;
+extern UINT16 *drgnmst_md_videoram;
+static tilemap *drgnmst_md_tilemap;
+
+extern UINT16 *drgnmst_rowscrollram;
+extern UINT16 *drgnmst_vidregs2;
+
+
+static TILE_GET_INFO( get_drgnmst_fg_tile_info )
+{
+ int tileno,colour, flipyx;
+ tileno = drgnmst_fg_videoram[tile_index*2] & 0xfff;
+ colour = drgnmst_fg_videoram[tile_index*2+1] & 0x1f;
+ flipyx = (drgnmst_fg_videoram[tile_index*2+1] & 0x60)>>5;
+
+ SET_TILE_INFO(1,tileno,colour,TILE_FLIPYX(flipyx));
+}
+
+WRITE16_HANDLER( drgnmst_fg_videoram_w )
+{
+ COMBINE_DATA(&drgnmst_fg_videoram[offset]);
+ tilemap_mark_tile_dirty(drgnmst_fg_tilemap,offset/2);
+}
+
+
+
+static TILE_GET_INFO( get_drgnmst_bg_tile_info )
+{
+ int tileno,colour,flipyx;
+ tileno = (drgnmst_bg_videoram[tile_index*2]& 0x1fff)+0x800;
+ colour = drgnmst_bg_videoram[tile_index*2+1] & 0x1f;
+ flipyx = (drgnmst_bg_videoram[tile_index*2+1] & 0x60)>>5;
+
+ SET_TILE_INFO(3,tileno,colour,TILE_FLIPYX(flipyx));
+}
+
+WRITE16_HANDLER( drgnmst_bg_videoram_w )
+{
+ COMBINE_DATA(&drgnmst_bg_videoram[offset]);
+ tilemap_mark_tile_dirty(drgnmst_bg_tilemap,offset/2);
+}
+
+static TILE_GET_INFO( get_drgnmst_md_tile_info )
+{
+ int tileno,colour,flipyx;
+ tileno = (drgnmst_md_videoram[tile_index*2]& 0x7fff)-0x2000;
+
+ colour = drgnmst_md_videoram[tile_index*2+1] & 0x1f;
+ flipyx = (drgnmst_md_videoram[tile_index*2+1] & 0x60)>>5;
+
+ SET_TILE_INFO(2,tileno,colour,TILE_FLIPYX(flipyx));
+}
+
+WRITE16_HANDLER( drgnmst_md_videoram_w )
+{
+ COMBINE_DATA(&drgnmst_md_videoram[offset]);
+ tilemap_mark_tile_dirty(drgnmst_md_tilemap,offset/2);
+}
+
+static void draw_sprites(running_machine *machine, mame_bitmap *bitmap,const rectangle *cliprect)
+{
+ const gfx_element *gfx = machine->gfx[0];
+ UINT16 *source = spriteram16;
+ UINT16 *finish = source + 0x800/2;
+
+ while( source<finish )
+ {
+ int xpos, ypos, number, flipx,flipy,wide,high;
+ int x,y;
+ int incx,incy;
+ int colr;
+
+ number = source[2];
+ xpos = source[0];
+ ypos = source[1];
+ flipx = source[3] & 0x0020;
+ flipy = source[3] & 0x0040;
+ wide = (source[3] & 0x0f00)>>8;
+ high = (source[3] & 0xf000)>>12;
+ colr = (source[3] & 0x001f);
+
+ if ((source[3] & 0xff00) == 0xff00) break;
+
+
+ if (!flipx) { incx = 16;} else { incx = -16; xpos += 16*wide; }
+ if (!flipy) { incy = 16;} else { incy = -16; ypos += 16*high; }
+
+
+ for (y=0;y<=high;y++) {
+ for (x=0;x<=wide;x++) {
+
+ int realx, realy, realnumber;
+
+ realx = xpos+incx*x;
+ realy = ypos+incy*y;
+ realnumber = number+x+y*16;
+
+ drawgfx(bitmap,gfx,realnumber,colr,flipx,flipy,realx,realy,cliprect,TRANSPARENCY_PEN,15);
+
+ }
+ }
+
+ source+=4;
+ }
+}
+
+
+static TILEMAP_MAPPER( drgnmst_fg_tilemap_scan_cols )
+{
+ return (col*32)+(row&0x1f)+((row&0xe0)>>5)*2048;
+}
+
+static TILEMAP_MAPPER( drgnmst_md_tilemap_scan_cols )
+{
+ return (col*16)+(row&0x0f)+((row&0xf0)>>4)*1024;
+}
+
+static TILEMAP_MAPPER( drgnmst_bg_tilemap_scan_cols )
+{
+ return (col*8)+(row&0x07)+((row&0xf8)>>3)*512;
+}
+
+VIDEO_START(drgnmst)
+{
+ drgnmst_fg_tilemap = tilemap_create(get_drgnmst_fg_tile_info,drgnmst_fg_tilemap_scan_cols,TILEMAP_TYPE_PEN, 8, 8, 64,64);
+ tilemap_set_transparent_pen(drgnmst_fg_tilemap,15);
+
+ drgnmst_md_tilemap = tilemap_create(get_drgnmst_md_tile_info,drgnmst_md_tilemap_scan_cols,TILEMAP_TYPE_PEN, 16, 16, 64,64);
+ tilemap_set_transparent_pen(drgnmst_md_tilemap,15);
+
+ drgnmst_bg_tilemap = tilemap_create(get_drgnmst_bg_tile_info,drgnmst_bg_tilemap_scan_cols,TILEMAP_TYPE_PEN, 32, 32, 64,64);
+ tilemap_set_transparent_pen(drgnmst_bg_tilemap,15);
+
+ // do the other tilemaps have rowscroll too? probably not ..
+ tilemap_set_scroll_rows(drgnmst_md_tilemap,1024);
+}
+
+VIDEO_UPDATE(drgnmst)
+{
+ int y, rowscroll_bank;
+
+ tilemap_set_scrollx(drgnmst_bg_tilemap,0, drgnmst_vidregs[10]-18); // verify
+ tilemap_set_scrolly(drgnmst_bg_tilemap,0, drgnmst_vidregs[11]); // verify
+
+// tilemap_set_scrollx(drgnmst_md_tilemap,0, drgnmst_vidregs[8]-16); // rowscrolled
+ tilemap_set_scrolly(drgnmst_md_tilemap,0, drgnmst_vidregs[9]); // verify
+
+ tilemap_set_scrollx(drgnmst_fg_tilemap,0, drgnmst_vidregs[6]-18); // verify (test mode colour test needs it)
+ tilemap_set_scrolly(drgnmst_fg_tilemap,0, drgnmst_vidregs[7]); // verify
+
+ rowscroll_bank = (drgnmst_vidregs[4] & 0x30) >> 4;
+
+ for (y = 0; y < 1024; y++)
+ tilemap_set_scrollx(drgnmst_md_tilemap,y, drgnmst_vidregs[8]-16+drgnmst_rowscrollram[y+0x800*rowscroll_bank]);
+
+ // todo: figure out which bits relate to the order
+ switch (drgnmst_vidregs2[0])
+ {
+ case 0x2451: // fg unsure
+ case 0x2d9a: // fg unsure
+ case 0x2440: // all ok
+ case 0x245a: // fg unsure, title screen
+ tilemap_draw(bitmap,cliprect,drgnmst_fg_tilemap,TILEMAP_DRAW_OPAQUE,0);
+ tilemap_draw(bitmap,cliprect,drgnmst_md_tilemap,0,0);
+ tilemap_draw(bitmap,cliprect,drgnmst_bg_tilemap,0,0);
+ break;
+ case 0x23c0: // all ok
+ tilemap_draw(bitmap,cliprect,drgnmst_bg_tilemap,TILEMAP_DRAW_OPAQUE,0);
+ tilemap_draw(bitmap,cliprect,drgnmst_fg_tilemap,0,0);
+ tilemap_draw(bitmap,cliprect,drgnmst_md_tilemap,0,0);
+ break;
+ case 0x38da: // fg unsure
+ case 0x215a: // fg unsure
+ case 0x2140: // all ok
+ tilemap_draw(bitmap,cliprect,drgnmst_fg_tilemap,TILEMAP_DRAW_OPAQUE,0);
+ tilemap_draw(bitmap,cliprect,drgnmst_bg_tilemap,0,0);
+ tilemap_draw(bitmap,cliprect,drgnmst_md_tilemap,0,0);
+ break;
+ case 0x2d80: // all ok
+ tilemap_draw(bitmap,cliprect,drgnmst_md_tilemap,TILEMAP_DRAW_OPAQUE,0);
+ tilemap_draw(bitmap,cliprect,drgnmst_bg_tilemap,0,0);
+ tilemap_draw(bitmap,cliprect,drgnmst_fg_tilemap,0,0);
+ break;
+ default:
+ tilemap_draw(bitmap,cliprect,drgnmst_bg_tilemap,TILEMAP_DRAW_OPAQUE,0);
+ tilemap_draw(bitmap,cliprect,drgnmst_fg_tilemap,0,0);
+ tilemap_draw(bitmap,cliprect,drgnmst_md_tilemap,0,0);
+ logerror ("unknown video priority regs %04x\n", drgnmst_vidregs2[0]);
+
+ }
+
+ draw_sprites(machine,bitmap,cliprect);
+
+// popmessage ("x %04x x %04x x %04x x %04x x %04x", drgnmst_vidregs2[0], drgnmst_vidregs[12], drgnmst_vidregs[13], drgnmst_vidregs[14], drgnmst_vidregs[15]);
+// popmessage ("x %04x x %04x y %04x y %04x z %04x z %04x",drgnmst_vidregs[0],drgnmst_vidregs[1],drgnmst_vidregs[2],drgnmst_vidregs[3],drgnmst_vidregs[4],drgnmst_vidregs[5]);
+
+ return 0;
+}