/*************************************************************************** Driver for Casio PV-1000 ***************************************************************************/ #include "emu.h" #include "cpu/z80/z80.h" #include "imagedev/cartslot.h" class pv1000_sound_device : public device_t, public device_sound_interface { public: pv1000_sound_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock); protected: // device-level overrides virtual void device_config_complete(); virtual void device_start(); // sound stream update overrides virtual void sound_stream_update(sound_stream &stream, stream_sample_t **inputs, stream_sample_t **outputs, int samples); private: // internal state }; extern const device_type PV1000; const device_type PV1000 = &device_creator; pv1000_sound_device::pv1000_sound_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) : device_t(mconfig, PV1000, "NEC D65010G031", tag, owner, clock), device_sound_interface(mconfig, *this) { } //------------------------------------------------- // device_config_complete - perform any // operations now that the configuration is // complete //------------------------------------------------- void pv1000_sound_device::device_config_complete() { } //------------------------------------------------- // device_start - device-specific startup //------------------------------------------------- static DEVICE_START( pv1000_sound ); void pv1000_sound_device::device_start() { DEVICE_START_NAME( pv1000_sound )(this); } //------------------------------------------------- // sound_stream_update - handle a stream update //------------------------------------------------- void pv1000_sound_device::sound_stream_update(sound_stream &stream, stream_sample_t **inputs, stream_sample_t **outputs, int samples) { // should never get here fatalerror("sound_stream_update called; not applicable to legacy sound devices\n"); } class pv1000_state : public driver_device { public: pv1000_state(const machine_config &mconfig, device_type type, const char *tag) : driver_device(mconfig, type, tag), m_maincpu(*this, "maincpu"), m_screen(*this, "screen"), m_p_videoram(*this, "p_videoram") { } DECLARE_WRITE8_MEMBER(pv1000_io_w); DECLARE_READ8_MEMBER(pv1000_io_r); DECLARE_WRITE8_MEMBER(pv1000_gfxram_w); UINT8 m_io_regs[8]; UINT8 m_fd_data; struct { UINT32 count; UINT16 period; UINT8 val; } m_voice[4]; sound_stream *m_sh_channel; emu_timer *m_irq_on_timer; emu_timer *m_irq_off_timer; UINT8 m_pcg_bank; UINT8 m_force_pattern; UINT8 m_fd_buffer_flag; UINT8 m_border_col; required_device m_maincpu; required_device m_screen; required_shared_ptr m_p_videoram; virtual void machine_start(); virtual void machine_reset(); virtual void palette_init(); UINT32 screen_update_pv1000(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect); TIMER_CALLBACK_MEMBER(d65010_irq_on_cb); TIMER_CALLBACK_MEMBER(d65010_irq_off_cb); DECLARE_DEVICE_IMAGE_LOAD_MEMBER( pv1000_cart ); }; static ADDRESS_MAP_START( pv1000, AS_PROGRAM, 8, pv1000_state ) AM_RANGE( 0x0000, 0x3fff ) AM_MIRROR( 0x4000 ) AM_ROM AM_REGION( "cart", 0 ) AM_RANGE( 0xb800, 0xbbff ) AM_RAM AM_SHARE("p_videoram") AM_RANGE( 0xbc00, 0xbfff ) AM_RAM_WRITE( pv1000_gfxram_w ) AM_REGION( "gfxram", 0 ) ADDRESS_MAP_END static ADDRESS_MAP_START( pv1000_io, AS_IO, 8, pv1000_state ) ADDRESS_MAP_GLOBAL_MASK( 0xff ) AM_RANGE( 0xf8, 0xff ) AM_READWRITE( pv1000_io_r, pv1000_io_w ) ADDRESS_MAP_END WRITE8_MEMBER( pv1000_state::pv1000_gfxram_w ) { UINT8 *gfxram = memregion( "gfxram" )->base(); gfxram[ offset ] = data; machine().gfx[1]->mark_dirty(offset/32); } WRITE8_MEMBER( pv1000_state::pv1000_io_w ) { switch ( offset ) { case 0x00: case 0x01: case 0x02: //logerror("pv1000_io_w offset=%02x, data=%02x (%03d)\n", offset, data , data); m_voice[offset].period = data; break; case 0x03: //currently unknown use break; case 0x05: m_fd_data = 0xf; break; // case 0x06 VRAM + PCG location, always fixed at 0xb8xx case 0x07: /* ---- -xxx unknown, border color? */ m_pcg_bank = (data & 0x20) >> 5; m_force_pattern = ((data & 0x10) >> 4); /* Dig Dug relies on this */ m_border_col = data & 7; break; } m_io_regs[offset] = data; } READ8_MEMBER( pv1000_state::pv1000_io_r ) { UINT8 data = m_io_regs[offset]; // logerror("pv1000_io_r offset=%02x\n", offset ); switch ( offset ) { case 0x04: /* Bit 1 = 1 => Data is available in port FD */ /* Bit 0 = 1 => Buffer at port FD is empty */ data = 0; data = m_fd_buffer_flag & 1; data |= m_fd_data ? 2 : 0; m_fd_buffer_flag &= ~1; break; case 0x05: static const char *const joynames[] = { "IN0", "IN1", "IN2", "IN3" }; int i; data = 0; for(i=0;i<4;i++) { if(m_io_regs[5] & 1 << i) { data |= ioport(joynames[i])->read(); m_fd_data &= ~(1 << i); } } //m_fd_data = 0; break; } return data; } static INPUT_PORTS_START( pv1000 ) PORT_START( "IN0" ) PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_SELECT ) PORT_PLAYER(1) PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_START ) PORT_PLAYER(1) PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_SELECT ) PORT_PLAYER(2) PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_START ) PORT_PLAYER(2) PORT_START( "IN1" ) PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_JOYSTICK_DOWN ) PORT_PLAYER(1) PORT_8WAY PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_JOYSTICK_RIGHT ) PORT_PLAYER(1) PORT_8WAY PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_JOYSTICK_DOWN ) PORT_PLAYER(2) PORT_8WAY PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_JOYSTICK_RIGHT ) PORT_PLAYER(2) PORT_8WAY PORT_START( "IN2" ) PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_JOYSTICK_LEFT ) PORT_PLAYER(1) PORT_8WAY PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_JOYSTICK_UP ) PORT_PLAYER(1) PORT_8WAY PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_JOYSTICK_LEFT ) PORT_PLAYER(2) PORT_8WAY PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_JOYSTICK_UP ) PORT_PLAYER(2) PORT_8WAY PORT_START( "IN3" ) PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_BUTTON1 ) PORT_PLAYER(1) PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_BUTTON2 ) PORT_PLAYER(1) PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_BUTTON1 ) PORT_PLAYER(2) PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_BUTTON2 ) PORT_PLAYER(2) INPUT_PORTS_END void pv1000_state::palette_init() { int i; for(i=0;i<8;i++) palette_set_color_rgb( machine(), i, pal1bit(i >> 2), pal1bit(i >> 1), pal1bit(i >> 0)); } DEVICE_IMAGE_LOAD_MEMBER( pv1000_state, pv1000_cart ) { UINT8 *cart = memregion("cart")->base(); UINT32 size; if (image.software_entry() == NULL) size = image.length(); else size = image.get_software_region_length("rom"); if (size != 0x2000 && size != 0x4000) { image.seterror(IMAGE_ERROR_UNSPECIFIED, "Unsupported cartridge size"); return IMAGE_INIT_FAIL; } if (image.software_entry() == NULL) { if (image.fread( cart, size) != size) { image.seterror(IMAGE_ERROR_UNSPECIFIED, "Unable to fully read from file"); return IMAGE_INIT_FAIL; } } else memcpy(cart, image.get_software_region("rom"), size); /* Mirror 8KB rom */ if (size == 0x2000) memcpy(cart + 0x2000, cart, 0x2000); return IMAGE_INIT_PASS; } UINT32 pv1000_state::screen_update_pv1000(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect) { int x, y; bitmap.fill(m_border_col); // TODO: might be either black or colored by this register for ( y = 0; y < 24; y++ ) { for ( x = 2; x < 30; x++ ) // left-right most columns are definitely masked by the border color { UINT16 tile = m_p_videoram[ y * 32 + x ]; if ( tile < 0xe0 || m_force_pattern ) { tile += ( m_pcg_bank << 8); drawgfx_opaque( bitmap, cliprect, machine().gfx[0], tile, 0, 0, 0, x*8, y*8 ); } else { tile -= 0xe0; drawgfx_opaque( bitmap, cliprect, machine().gfx[1], tile, 0, 0, 0, x*8, y*8 ); } } } return 0; } /* plgDavid's audio implementation/analysis notes: Sound appears to be 3 50/50 pulse voices made by cutting the main clock by 1024, then by the value of the 6bit period registers. This creates a surprisingly accurate pitch range. Note: the register periods are inverted. */ static STREAM_UPDATE( pv1000_sound_update ) { pv1000_state *state = device->machine().driver_data(); stream_sample_t *buffer = outputs[0]; while ( samples > 0 ) { *buffer=0; for (size_t i=0;i<3;i++) { UINT32 per = (0x3F-(state->m_voice[i].period & 0x3f)); if( per != 0)//OFF! *buffer += state->m_voice[i].val * 8192; state->m_voice[i].count++; if (state->m_voice[i].count >= per) { state->m_voice[i].count = 0; state->m_voice[i].val = !state->m_voice[i].val; } } buffer++; samples--; } } static DEVICE_START( pv1000_sound ) { pv1000_state *state = device->machine().driver_data(); state->m_sh_channel = device->machine().sound().stream_alloc(*device, 0, 1, device->clock()/1024, 0, pv1000_sound_update ); } /* Interrupt is triggering 16 times during vblank. */ /* we have chosen to trigger on scanlines 195, 199, 203, 207, 211, 215, 219, 223, 227, 231, 235, 239, 243, 247, 251, 255 */ TIMER_CALLBACK_MEMBER(pv1000_state::d65010_irq_on_cb) { int vpos = m_screen->vpos(); int next_vpos = vpos + 4; if(vpos == 195) m_fd_buffer_flag |= 1; /* TODO: exact timing of this */ /* Set IRQ line and schedule release of IRQ line */ m_maincpu->set_input_line(0, ASSERT_LINE ); m_irq_off_timer->adjust( m_screen->time_until_pos(vpos, 380/2 ) ); /* Schedule next IRQ trigger */ if ( vpos >= 255 ) { next_vpos = 195; } m_irq_on_timer->adjust( m_screen->time_until_pos(next_vpos, 0 ) ); } TIMER_CALLBACK_MEMBER(pv1000_state::d65010_irq_off_cb) { m_maincpu->set_input_line(0, CLEAR_LINE ); } void pv1000_state::machine_start() { m_irq_on_timer = machine().scheduler().timer_alloc(timer_expired_delegate(FUNC(pv1000_state::d65010_irq_on_cb),this)); m_irq_off_timer = machine().scheduler().timer_alloc(timer_expired_delegate(FUNC(pv1000_state::d65010_irq_off_cb),this)); } void pv1000_state::machine_reset() { m_io_regs[5] = 0; m_fd_data = 0; m_irq_on_timer->adjust( m_screen->time_until_pos(195, 0 ) ); m_irq_off_timer->adjust( attotime::never ); } static const gfx_layout pv1000_3bpp_gfx = { 8, 8, /* 8x8 characters */ RGN_FRAC(1,1), 3, { 0, 8*8, 16*8 }, { 0, 1, 2, 3, 4, 5, 6, 7 }, { 0*8, 1*8, 2*8, 3*8, 4*8, 5*8, 6*8, 7*8 }, 8*8*4 }; static GFXDECODE_START( pv1000 ) GFXDECODE_ENTRY( "cart", 8, pv1000_3bpp_gfx, 0, 8 ) GFXDECODE_ENTRY( "gfxram", 8, pv1000_3bpp_gfx, 0, 8 ) GFXDECODE_END static MACHINE_CONFIG_START( pv1000, pv1000_state ) MCFG_CPU_ADD( "maincpu", Z80, 17897725/5 ) MCFG_CPU_PROGRAM_MAP( pv1000 ) MCFG_CPU_IO_MAP( pv1000_io ) /* D65010G031 - Video & sound chip */ MCFG_SCREEN_ADD( "screen", RASTER ) MCFG_SCREEN_RAW_PARAMS( 17897725/3, 380, 0, 256, 262, 0, 192 ) MCFG_SCREEN_UPDATE_DRIVER(pv1000_state, screen_update_pv1000) MCFG_PALETTE_LENGTH( 8 ) MCFG_GFXDECODE( pv1000 ) MCFG_SPEAKER_STANDARD_MONO("mono") MCFG_SOUND_ADD( "pv1000_sound", PV1000, 17897725 ) MCFG_SOUND_ROUTE( ALL_OUTPUTS, "mono", 1.00 ) /* Cartridge slot */ MCFG_CARTSLOT_ADD("cart") MCFG_CARTSLOT_EXTENSION_LIST("bin") MCFG_CARTSLOT_MANDATORY MCFG_CARTSLOT_INTERFACE("pv1000_cart") MCFG_CARTSLOT_LOAD(pv1000_state,pv1000_cart) /* Software lists */ MCFG_SOFTWARE_LIST_ADD("cart_list","pv1000") MACHINE_CONFIG_END ROM_START( pv1000 ) ROM_REGION( 0x4000, "cart", ROMREGION_ERASE00 ) ROM_REGION( 0x400, "gfxram", ROMREGION_ERASE00 ) ROM_END /* YEAR NAME PARENT COMPAT MACHINE INPUT INIT COMPANY FULLNAME FLAGS */ CONS( 1983, pv1000, 0, 0, pv1000, pv1000, driver_device, 0, "Casio", "PV-1000", 0 )