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Improved the sound in Double Wings by appling the same handling of Night Slashers (they are actually similar if not same memory map) [Angelo Salese]

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This commit is contained in:
Angelo Salese 2009-01-23 17:10:32 +00:00
parent 4c07fba864
commit 25e5740747
1 changed files with 20 additions and 9 deletions
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29
src/mame/drivers/dblewing.c
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@ -10,6 +10,7 @@ Protection TODO:
- Check the remaining unmapped read/writes effect;
- Boss BGM might be wrong / variable;
- Haven't yet checked if bonus life and difficulty DIP-SW are rightly tested;
- Demo Sounds DIP-SW doesn't work?
- Clean-up the whole routine;
@ -246,6 +247,8 @@ static UINT16 dblwings_384_data;
static UINT16 boss_move,boss_shoot_type,boss_3_data,boss_4_data,boss_5_data,boss_5sx_data,boss_6_data;
static UINT8 dblewing_sound_irq;
static READ16_HANDLER ( dlbewing_prot_r )
{
switch(offset*2)
@ -362,7 +365,8 @@ static WRITE16_HANDLER( dblewing_prot_w )
return;
case 0x380: // sound write
soundlatch_w(space,0,data&0xff);
cpu_set_input_line(space->machine->cpu[1],0,HOLD_LINE);
dblewing_sound_irq |= 0x02;
cpu_set_input_line(space->machine->cpu[1],0,(dblewing_sound_irq != 0) ? ASSERT_LINE : CLEAR_LINE);
return;
case 0x384:
dblwings_384_data = data;
@ -453,11 +457,12 @@ static ADDRESS_MAP_START( dblewing_map, ADDRESS_SPACE_PROGRAM, 16 )
AM_RANGE(0xff0000, 0xff3fff) AM_MIRROR(0xc000) AM_RAM
ADDRESS_MAP_END
static READ8_HANDLER( unk_r )
static READ8_HANDLER(irq_latch_r)
{
static UINT8 x = 0;
return x^=1;
/* bit 1 of dblewing_sound_irq specifies IRQ command writes */
dblewing_sound_irq &= ~0x02;
cpu_set_input_line(space->machine->cpu[1], 0, (dblewing_sound_irq != 0) ? ASSERT_LINE : CLEAR_LINE);
return dblewing_sound_irq;
}
static ADDRESS_MAP_START( sound_map, ADDRESS_SPACE_PROGRAM, 8 )
@ -466,7 +471,7 @@ static ADDRESS_MAP_START( sound_map, ADDRESS_SPACE_PROGRAM, 8 )
AM_RANGE(0xa000, 0xa001) AM_READWRITE(ym2151_status_port_0_r,ym2151_word_0_w)
AM_RANGE(0xb000, 0xb000) AM_READWRITE(okim6295_status_0_r,okim6295_data_0_w)
AM_RANGE(0xc000, 0xc000) AM_READ(soundlatch_r)
AM_RANGE(0xd000, 0xd000) AM_READ(unk_r) //timing? sound latch?
AM_RANGE(0xd000, 0xd000) AM_READ(irq_latch_r) //timing? sound latch?
AM_RANGE(0xf000, 0xf000) AM_READWRITE(okim6295_status_0_r,okim6295_data_0_w)
ADDRESS_MAP_END
@ -642,10 +647,14 @@ static INPUT_PORTS_START( dblewing )
PORT_DIPSETTING( 0x0000, DEF_STR( On ) )
INPUT_PORTS_END
static void sound_irq(running_machine *machine, int irq)
static void sound_irq(running_machine *machine, int state)
{
cpu_set_input_line(machine->cpu[1],0,irq ? ASSERT_LINE : CLEAR_LINE);
// mame_printf_debug("sound irq\n");
/* bit 0 of dblewing_sound_irq specifies IRQ from sound chip */
if (state)
dblewing_sound_irq |= 0x01;
else
dblewing_sound_irq &= ~0x01;
cpu_set_input_line(machine->cpu[1], 0, (dblewing_sound_irq != 0) ? ASSERT_LINE : CLEAR_LINE);
}
static const ym2151_interface ym2151_config =
@ -663,6 +672,8 @@ static MACHINE_DRIVER_START( dblewing )
MDRV_CPU_PROGRAM_MAP(sound_map,0)
MDRV_CPU_IO_MAP(sound_io,0)
MDRV_QUANTUM_TIME(HZ(6000))
/* video hardware */
MDRV_SCREEN_ADD("main", RASTER)
MDRV_SCREEN_REFRESH_RATE(58)