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istrebiteli: preliminary "sound"

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This commit is contained in:
MetalliC 2016-10-03 01:27:30 +03:00
parent 7747e7a1b9
commit e2e65c9613
1 changed files with 116 additions and 6 deletions
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122
src/mame/drivers/istrebiteli.cpp
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@ -24,6 +24,99 @@
#define I8080_TAG "maincpu"
/////////////////////////////////////////////////////////////
class istrebiteli_sound_device : public device_t,
public device_sound_interface
{
public:
istrebiteli_sound_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
void sound_w(UINT8 data);
protected:
// device-level overrides
virtual void device_start() override;
// sound stream update overrides
virtual void sound_stream_update(sound_stream &stream, stream_sample_t **inputs, stream_sample_t **outputs, int samples) override;
private:
// internal state
sound_stream *m_channel;
UINT8 *m_rom;
int m_rom_cnt;
int m_rom_incr;
int m_sample_num;
int m_temp_vol;
bool m_cnt_reset;
bool m_rom_out_en;
UINT8 m_prev_data;
};
extern const device_type ISTREBITELI_SOUND;
//////////////////////////////////////////////////////////////
const device_type ISTREBITELI_SOUND = &device_creator<istrebiteli_sound_device>;
istrebiteli_sound_device::istrebiteli_sound_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock)
: device_t(mconfig, ISTREBITELI_SOUND, "Istrebiteli Sound", tag, owner, clock, "istrebiteli_sound", __FILE__),
device_sound_interface(mconfig, *this),
m_channel(nullptr),
m_rom(nullptr),
m_rom_cnt(0),
m_rom_incr(0),
m_sample_num(0),
m_temp_vol(0),
m_cnt_reset(true),
m_rom_out_en(false),
m_prev_data(0)
{
}
void istrebiteli_sound_device::device_start()
{
m_channel = stream_alloc(0, 1, clock() / 2);
m_rom = machine().root_device().memregion("soundrom")->base();
}
void istrebiteli_sound_device::sound_stream_update(sound_stream &stream, stream_sample_t **inputs, stream_sample_t **outputs, int samples)
{
stream_sample_t *sample = outputs[0];
while (samples-- > 0)
{
int smpl = 0;
if (m_rom_out_en)
smpl = ((m_rom[m_rom_cnt] >> m_sample_num) & 1) * 4000;
*sample++ = smpl;
m_rom_cnt = (m_rom_cnt + m_rom_incr) & 0x1ff;
}
}
void istrebiteli_sound_device::sound_w(UINT8 data)
{
// if (m_prev_data != data)
// printf("sound %02X rescnt %d sample %d outen %d vol %d\n", data, (data >> 1) & 1, (data >> 2) & 7, (data >> 5) & 1, (data >> 6) & 3);
m_cnt_reset = ((data >> 1) & 1) ? true : false;
m_sample_num = (data >> 2) & 7;
m_rom_out_en = ((data >> 5) & 1) ? false : true;
if (m_cnt_reset) {
m_rom_cnt = 0;
m_rom_incr = 0;
m_temp_vol = 0;
} else
m_rom_incr = 1;
if (((data >> 6) & 1) && ((m_prev_data >> 6) & 1) == 0)
m_temp_vol = (m_temp_vol + 1) & 3;
m_prev_data = data;
}
//////////////////////////////////////////////////////////////
class istrebiteli_state : public driver_device
{
public:
@ -33,6 +126,7 @@ public:
, m_ppi0(*this, "ppi0")
, m_ppi1(*this, "ppi1")
, m_gfxdecode(*this, "gfxdecode")
, m_sound_dev(*this, "custom")
{
}
@ -54,8 +148,9 @@ public:
required_device<i8255_device> m_ppi0;
required_device<i8255_device> m_ppi1;
required_device<gfxdecode_device> m_gfxdecode;
required_device<istrebiteli_sound_device> m_sound_dev;
virtual void machine_start() override { }
virtual void machine_start() override;
virtual void machine_reset() override;
virtual void video_start() override;
@ -65,11 +160,20 @@ public:
UINT8 m_spr0_ctrl;
UINT8 m_spr1_ctrl;
UINT8 m_spr_xy[8];
UINT8 coin_count;
UINT8 m_spr_xy[8];
UINT8 m_tileram[16];
};
void istrebiteli_state::machine_start()
{
save_item(NAME(m_spr0_ctrl));
save_item(NAME(m_spr1_ctrl));
save_item(NAME(coin_count));
save_item(NAME(m_spr_xy));
save_item(NAME(m_tileram));
}
void istrebiteli_state::machine_reset()
{
m_spr0_ctrl = m_spr1_ctrl = 0;
@ -161,9 +265,10 @@ WRITE8_MEMBER(istrebiteli_state::ppi1_w)
WRITE8_MEMBER(istrebiteli_state::sound_w)
{
machine().bookkeeping().coin_lockout_w(0, data & 1);
if (data & 1)
coin_count = 0;
// bits 1-7 sound control, TODO
m_sound_dev->sound_w(data);
}
WRITE8_MEMBER(istrebiteli_state::spr0_ctrl_w)
@ -297,7 +402,7 @@ GFXDECODE_END
static MACHINE_CONFIG_START( istreb, istrebiteli_state)
/* basic machine hardware */
MCFG_CPU_ADD(I8080_TAG, I8080, 8000000 / 4) // KR580VM80A
MCFG_CPU_ADD(I8080_TAG, I8080, XTAL_8MHz / 4) // KR580VM80A
MCFG_CPU_PROGRAM_MAP(mem_map)
MCFG_CPU_IO_MAP(io_map)
@ -313,13 +418,18 @@ static MACHINE_CONFIG_START( istreb, istrebiteli_state)
/* video hardware */
MCFG_SCREEN_ADD("screen", RASTER)
MCFG_SCREEN_RAW_PARAMS(4000000, 256, 64, 256, 312, 0, 256)
MCFG_SCREEN_RAW_PARAMS(XTAL_8MHz / 2, 256, 64, 256, 312, 0, 256)
MCFG_SCREEN_UPDATE_DRIVER(istrebiteli_state, screen_update)
MCFG_SCREEN_PALETTE("palette")
MCFG_GFXDECODE_ADD("gfxdecode", "palette", istrebiteli)
MCFG_PALETTE_ADD("palette", 4)
MCFG_PALETTE_INIT_OWNER(istrebiteli_state, istrebiteli)
/* sound hardware */
MCFG_SPEAKER_STANDARD_MONO("mono")
MCFG_SOUND_ADD("custom", ISTREBITELI_SOUND, XTAL_8MHz / 2 / 256)
MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.00)
MACHINE_CONFIG_END
ROM_START( istreb )
@ -339,4 +449,4 @@ ROM_START( istreb )
ROM_LOAD( "003-w3.bin", 0x000, 0x200, CRC(54eb4893) SHA1(c7a4724045c645ab728074ed7fef1882d9776005) )
ROM_END
GAME( 198?, istreb, 0, istreb, istreb, driver_device, 0, ROT0, "Terminal", "Istrebiteli", MACHINE_NO_SOUND)
GAME( 198?, istreb, 0, istreb, istreb, driver_device, 0, ROT0, "Terminal", "Istrebiteli", MACHINE_IMPERFECT_SOUND | MACHINE_SUPPORTS_SAVE)