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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>();
COMBINE_DATA(&state->m_spritecontrol[offset]);
/* Sprite list size register - used in spriteroutine */
// offset0: sprite list size (negative)
// offset1: ? (always 0)
// offset2: sprite control
// offset3: ? (always 0)
// offset4: sprite dma
// offset5: ?
/* Sprite control - display all sprites, or partial list */
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) */
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);
state->m_sprite_buffer_busy = 0;
@ -104,10 +109,10 @@ WRITE16_HANDLER( m92_videocontrol_w )
/*
fedc ba98 7654 3210
.x.. x... .xx. .... always 0?
x... .... .... .... disable tiles
x... .... .... .... disable tiles?? (but that breaks mysticri)
..xx .... .... .... ? only written at POST - otherwise always 2
.... .xxx .... .... ? only written at POST - otherwise always 0
.... .... x... .... disable sprites
.... .... x... .... disable sprites??
.... .... ...x .... ?
.... .... .... x... ?
.... .... .... .x.. ? maybe more palette banks?
@ -288,7 +293,6 @@ VIDEO_START( m92 )
memset(machine.generic.buffered_spriteram.u16,0,0x800);
state->save_item(NAME(state->m_pf_master_control));
state->save_item(NAME(state->m_videocontrol));
state->save_item(NAME(state->m_sprite_list));
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)
{
m92_state *state = machine.driver_data<m92_state>();
if (state->m_videocontrol & 0x0080) return;
UINT16 *buffered_spriteram16 = machine.generic.buffered_spriteram.u16;
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)
{
m92_state *state = machine.driver_data<m92_state>();
if (state->m_videocontrol & 0x0080) return;
UINT16 *buffered_spriteram16 = machine.generic.buffered_spriteram.u16;
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)
{
m92_state *state = machine.driver_data<m92_state>();
if (state->m_videocontrol & 0x8000) return;
if ((~state->m_pf_master_control[2] >> 4) & 1)
{