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aw, prev commit broke mystic riders, so unbreak it

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Michaël Banaan Ananas 2011-10-21 00:40:56 +00:00
parent 8ea00287c9
commit 0a54096bc2
1 changed files with 9 additions and 8 deletions
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17
src/mame/video/m92.c
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@ -56,8 +56,12 @@ WRITE16_HANDLER( m92_spritecontrol_w )
{ {
m92_state *state = space->machine().driver_data<m92_state>(); m92_state *state = space->machine().driver_data<m92_state>();
COMBINE_DATA(&state->m_spritecontrol[offset]); COMBINE_DATA(&state->m_spritecontrol[offset]);
// offset0: sprite list size (negative)
/* Sprite list size register - used in spriteroutine */ // offset1: ? (always 0)
// offset2: sprite control
// offset3: ? (always 0)
// offset4: sprite dma
// offset5: ?
/* Sprite control - display all sprites, or partial list */ /* Sprite control - display all sprites, or partial list */
if (offset==2 && ACCESSING_BITS_0_7) if (offset==2 && ACCESSING_BITS_0_7)
@ -73,6 +77,7 @@ WRITE16_HANDLER( m92_spritecontrol_w )
/* Sprite buffer - the data written doesn't matter (confirmed by several games) */ /* Sprite buffer - the data written doesn't matter (confirmed by several games) */
if (offset==4) if (offset==4)
{ {
/* this implementation is not accurate: still some delayed sprites in gunforc2 (might be another issue?) */
buffer_spriteram16_w(space,0,0,0xffff); buffer_spriteram16_w(space,0,0,0xffff);
state->m_sprite_buffer_busy = 0; state->m_sprite_buffer_busy = 0;
@ -104,10 +109,10 @@ WRITE16_HANDLER( m92_videocontrol_w )
/* /*
fedc ba98 7654 3210 fedc ba98 7654 3210
.x.. x... .xx. .... always 0? .x.. x... .xx. .... always 0?
x... .... .... .... disable tiles x... .... .... .... disable tiles?? (but that breaks mysticri)
..xx .... .... .... ? only written at POST - otherwise always 2 ..xx .... .... .... ? only written at POST - otherwise always 2
.... .xxx .... .... ? only written at POST - otherwise always 0 .... .xxx .... .... ? only written at POST - otherwise always 0
.... .... x... .... disable sprites .... .... x... .... disable sprites??
.... .... ...x .... ? .... .... ...x .... ?
.... .... .... x... ? .... .... .... x... ?
.... .... .... .x.. ? maybe more palette banks? .... .... .... .x.. ? maybe more palette banks?
@ -288,7 +293,6 @@ VIDEO_START( m92 )
memset(machine.generic.buffered_spriteram.u16,0,0x800); memset(machine.generic.buffered_spriteram.u16,0,0x800);
state->save_item(NAME(state->m_pf_master_control)); state->save_item(NAME(state->m_pf_master_control));
state->save_item(NAME(state->m_videocontrol)); state->save_item(NAME(state->m_videocontrol));
state->save_item(NAME(state->m_sprite_list)); state->save_item(NAME(state->m_sprite_list));
state->save_item(NAME(state->m_raster_irq_position)); state->save_item(NAME(state->m_raster_irq_position));
@ -324,7 +328,6 @@ VIDEO_START( ppan )
static void draw_sprites(running_machine &machine, bitmap_t *bitmap, const rectangle *cliprect) static void draw_sprites(running_machine &machine, bitmap_t *bitmap, const rectangle *cliprect)
{ {
m92_state *state = machine.driver_data<m92_state>(); m92_state *state = machine.driver_data<m92_state>();
if (state->m_videocontrol & 0x0080) return;
UINT16 *buffered_spriteram16 = machine.generic.buffered_spriteram.u16; UINT16 *buffered_spriteram16 = machine.generic.buffered_spriteram.u16;
int offs,k; int offs,k;
@ -410,7 +413,6 @@ static void draw_sprites(running_machine &machine, bitmap_t *bitmap, const recta
static void ppan_draw_sprites(running_machine &machine, bitmap_t *bitmap, const rectangle *cliprect) static void ppan_draw_sprites(running_machine &machine, bitmap_t *bitmap, const rectangle *cliprect)
{ {
m92_state *state = machine.driver_data<m92_state>(); m92_state *state = machine.driver_data<m92_state>();
if (state->m_videocontrol & 0x0080) return;
UINT16 *buffered_spriteram16 = machine.generic.buffered_spriteram.u16; UINT16 *buffered_spriteram16 = machine.generic.buffered_spriteram.u16;
int offs,k; int offs,k;
@ -548,7 +550,6 @@ static void m92_update_scroll_positions(running_machine &machine)
static void m92_draw_tiles(running_machine &machine, bitmap_t *bitmap,const rectangle *cliprect) static void m92_draw_tiles(running_machine &machine, bitmap_t *bitmap,const rectangle *cliprect)
{ {
m92_state *state = machine.driver_data<m92_state>(); m92_state *state = machine.driver_data<m92_state>();
if (state->m_videocontrol & 0x8000) return;
if ((~state->m_pf_master_control[2] >> 4) & 1) if ((~state->m_pf_master_control[2] >> 4) & 1)
{ {