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fix attempt for MT 5832

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This commit is contained in:
mamehaze 2015-01-26 12:49:34 +00:00
parent e44ed5e6aa
commit 62b3b9f80d
1 changed files with 8 additions and 5 deletions
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13
src/mame/video/gp9001.c
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@ -141,12 +141,15 @@ Pipi & Bibis | Fix Eight | V-Five | Snow Bros. 2 |
The alternative option of allowing sprites to render a priority level higher than tilemaps breaks at least the
'Welcome to..' screen in Batrider after selecting your character.
Batrider Gob-Robo boss however definitely requires SPRITES to still have 16 levels of priority against other
sprites, see http://mametesters.org/view.php?id=5832
It is unknown if the current solution breaks anything. The majority of titles don't make extensive use of the
priority system.
*/
#define GP9001_PRIMASK (0x000e)
#define GP9001_PRIMASK (0x000f)
#define GP9001_PRIMASK_TMAPS (0x000e)
WRITE16_MEMBER( gp9001vdp_device::gp9001_bg_tmap_w )
{
@ -171,8 +174,8 @@ DEVICE_ADDRESS_MAP_START( map, 16, gp9001vdp_device )
AM_RANGE(0x0000, 0x0fff) AM_RAM_WRITE(gp9001_bg_tmap_w) AM_SHARE("vram_bg")
AM_RANGE(0x1000, 0x1fff) AM_RAM_WRITE(gp9001_fg_tmap_w) AM_SHARE("vram_fg")
AM_RANGE(0x2000, 0x2fff) AM_RAM_WRITE(gp9001_top_tmap_w) AM_SHARE("vram_top")
AM_RANGE(0x3000, 0x37ff) AM_RAM AM_SHARE("spriteram")
AM_RANGE(0x3800, 0x3fff) AM_RAM // sprite mirror?
AM_RANGE(0x3000, 0x37ff) AM_RAM AM_SHARE("spriteram") AM_MIRROR(0x0800)
// AM_RANGE(0x3800, 0x3fff) AM_RAM // sprite mirror?
ADDRESS_MAP_END
@ -885,7 +888,7 @@ void gp9001vdp_device::gp9001_draw_custom_tilemap( bitmap_ind16 &bitmap, tilemap
int realx = (x+scrollx)&0x1ff;
UINT16 pixdat = srcptr[realx];
UINT8 pixpri = ((pixdat & (GP9001_PRIMASK<<12))>>12);
UINT8 pixpri = ((pixdat & (GP9001_PRIMASK_TMAPS<<12))>>12);
if (pri_enable[pixpri])
{