diff options
Diffstat (limited to 'src/devices/sound/awacs.cpp')
-rw-r--r-- | src/devices/sound/awacs.cpp | 352 |
1 files changed, 254 insertions, 98 deletions
diff --git a/src/devices/sound/awacs.cpp b/src/devices/sound/awacs.cpp index 0c9c5417ffc..3ddb10e7007 100644 --- a/src/devices/sound/awacs.cpp +++ b/src/devices/sound/awacs.cpp @@ -16,6 +16,8 @@ // device type definition DEFINE_DEVICE_TYPE(AWACS, awacs_device, "awacs", "AWACS") +const u8 awacs_device::divider[4] = { 16, 12, 8, 16 }; + //************************************************************************** // LIVE DEVICE @@ -28,10 +30,13 @@ DEFINE_DEVICE_TYPE(AWACS, awacs_device, "awacs", "AWACS") awacs_device::awacs_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) : device_t(mconfig, AWACS, tag, owner, clock) , device_sound_interface(mconfig, *this) + , m_irq_out_cb(*this) + , m_irq_in_cb(*this) + , m_output_cb(*this, 0) + , m_input_cb(*this) + , m_input_port_cb(*this, 0) + , m_output_port_cb(*this) , m_stream(nullptr) - , m_play_ptr(0), m_buffer_size(0), m_buffer_num(0), m_playback_enable(false) - , m_dma_space(nullptr), m_dma_offset_0(0), m_dma_offset_1(0) - , m_timer(nullptr) { } @@ -42,15 +47,25 @@ awacs_device::awacs_device(const machine_config &mconfig, const char *tag, devic void awacs_device::device_start() { // create the stream - m_stream = machine().sound().stream_alloc(*this, 0, 2, 22050); - - memset(m_regs, 0, sizeof(m_regs)); - - m_timer = timer_alloc(0, nullptr); - - save_item(NAME(m_play_ptr)); + m_stream = stream_alloc(0, 2, clock()/64/divider[0], STREAM_SYNCHRONOUS); + + m_last_sample = attotime::zero; + + save_item(NAME(m_extend)); + save_item(NAME(m_ext_command)); + save_item(NAME(m_ext_address)); + save_item(NAME(m_ext_data)); + save_item(NAME(m_codec0)); + save_item(NAME(m_codec1)); + save_item(NAME(m_codec2)); + save_item(NAME(m_ctrl0)); + save_item(NAME(m_ctrl1)); + save_item(NAME(m_out_irq)); + save_item(NAME(m_in_irq)); + save_item(NAME(m_output_buffer)); + save_item(NAME(m_input_buffer)); + save_item(NAME(m_phase)); save_item(NAME(m_buffer_size)); - save_item(NAME(m_playback_enable)); } @@ -60,122 +75,263 @@ void awacs_device::device_start() void awacs_device::device_reset() { - m_stream->update(); - - memset(m_regs, 0, sizeof(m_regs)); - - m_play_ptr = 0; + m_extend = false; + m_ext_command = false; + m_ext_address = 0; + m_ext_data = 0; + m_codec0 = 0; + m_codec1 = 0; + m_codec2 = 0; + m_ctrl0 = 0; + m_ctrl1 = 0; + m_out_irq = 0; + m_in_irq = 0; + m_output_buffer = false; + m_input_buffer = false; + m_phase = 0; m_buffer_size = 0; - m_playback_enable = false; - m_dma_space = nullptr; - m_dma_offset_0 = m_dma_offset_1 = 0; - m_buffer_num = 0; -} -//------------------------------------------------- -// device_timer - called when our device timer expires -//------------------------------------------------- + m_irq_out_cb(false); + m_irq_in_cb(false); -void awacs_device::device_timer(emu_timer &timer, device_timer_id tid, int param, void *ptr) -{ - m_stream->update(); + m_stream->set_sample_rate(clock()/64/divider[(m_ctrl0 >> 1) & 3]); } + //------------------------------------------------- // sound_stream_update - handle update requests for // our sound stream //------------------------------------------------- -void awacs_device::sound_stream_update(sound_stream &stream, stream_sample_t **inputs, stream_sample_t **outputs, int samples) +void awacs_device::sound_stream_update(sound_stream &stream) { - stream_sample_t *outL, *outR; - int offset = (m_buffer_num == 0) ? m_dma_offset_0 : m_dma_offset_1; - - outL = outputs[0]; - outR = outputs[1]; - - if (m_playback_enable) - { - for (int i = 0; i < samples; i++) - { - outL[i] = (int16_t)m_dma_space->read_word(offset + m_play_ptr); - outR[i] = (int16_t)m_dma_space->read_word(offset + m_play_ptr + 2); - m_play_ptr += 4; - } + m_last_sample = machine().time(); + + if(m_phase == 0) { + m_active = 0; + if(m_ctrl0 & 1) + m_active |= ACTIVE_OUT; + if(m_ctrl1 & 0x80) + m_active |= ACTIVE_IN; + } - // out of buffer? - if (m_play_ptr >= m_buffer_size) - { - uint8_t bufflag[2] = { 0x40, 0x80 }; + if(m_active & ACTIVE_OUT) { + u32 data = m_output_cb(m_phase | (m_output_buffer ? 0x10000 : 0)); + s16 left = data >> 16; + s16 right = data; + stream.put_int(0, 0, left, 32768); + stream.put_int(1, 0, right, 32768); - m_regs[0x18] |= bufflag[m_buffer_num]; - m_buffer_num ^= 1; - m_play_ptr = 0; - } + } else { + m_output_buffer = false; + + stream.put_int(0, 0, 0, 32768); + stream.put_int(1, 0, 0, 32768); } + + if(m_active & ACTIVE_IN) + m_input_cb(m_phase | (m_input_buffer ? 0x10000 : 0), 0); else - { - for (int i = 0; i < samples; i++) - { - outL[i] = 0; - outR[i] = 0; + m_input_buffer = false; + + m_phase = (m_phase + 1) & 0xfff; + if(m_phase >= m_buffer_size) { + m_phase = 0; + + if(m_active & ACTIVE_OUT) { + if(m_output_buffer) { + m_output_buffer = false; + if(m_out_irq & 0x40) + m_out_irq |= 0x20; + else + m_out_irq |= 0x40; + } else { + m_output_buffer = true; + if(m_out_irq & 0x80) + m_out_irq |= 0x20; + else + m_out_irq |= 0x80; + } + } + + if(m_active & ACTIVE_IN) { + if(m_input_buffer) { + m_input_buffer = false; + if(m_in_irq & 0x40) + m_in_irq |= 0x20; + else + m_in_irq |= 0x40; + } else { + m_input_buffer = true; + if(m_in_irq & 0x80) + m_in_irq |= 0x20; + else + m_in_irq |= 0x80; + } } + update_irq(); } } -//------------------------------------------------- -// read - read from the chip's registers and internal RAM -//------------------------------------------------- - -READ8_MEMBER( awacs_device::read ) +void awacs_device::update_irq() { - return m_regs[offset]; + m_irq_out_cb(((m_out_irq >> 4) & m_out_irq) != 0); + m_irq_in_cb(((m_in_irq >> 4) & m_in_irq) != 0); } //------------------------------------------------- -// write - write to the chip's registers and internal RAM +// read - read from the chip's registers //------------------------------------------------- -WRITE8_MEMBER( awacs_device::write ) +uint8_t awacs_device::read(offs_t offset) { - switch (offset) - { - case 0x8: - case 0x9: - m_regs[offset] = data; - m_buffer_size = (m_regs[8]<<6) | (m_regs[9]>>2); -// printf("buffer size = %x samples, %x bytes\n", m_buffer_size, m_buffer_size*4); - m_buffer_size *= 4; // samples * 16 bits * stereo - break; - - case 0x10: - { - static const int rates[4] = { 22100, 29400, 44100, 22100 }; - m_stream->set_sample_rate(rates[(data>>1)&3]); -// printf("rate %d, enable: %d\n", rates[(data>>1)&3], data & 1); - m_playback_enable = (data & 1) ? true : false; - - if (m_playback_enable && !(m_regs[0x10]&1)) - { - m_play_ptr = 0; - m_buffer_num = 0; - } - } - break; - - case 0x18: - m_regs[offset] &= 0xf0; - m_regs[offset] |= (data & 0x0f); - m_regs[offset] &= ~(data & 0xf0); - return; + switch(offset) { + case 0x00: + if(m_extend) + return 0x80 | (m_ext_command ? 0x40 : 0x00) | (m_ext_address >> 4); + else + return m_codec0; + + case 0x01: + if(m_extend) + return ((m_ext_address & 0xf) << 4) | ((m_ext_data & 0xf00) >> 8); + else + return m_codec1; + + case 0x02: + if(m_extend) + return m_ext_data & 0x0ff; + else + return m_codec2; + + case 0x06: return m_input_port_cb() & 0xf; + + case 0x0c: { + u64 cycles = (machine().time() - m_last_sample).as_ticks(clock())/divider[(m_ctrl0 >> 1) & 3]; + if(cycles > 63) + cycles = 63; + return cycles | ((m_phase & 3) << 6); } - m_regs[offset] = data; + case 0x0d: return m_phase >> 2; + case 0x0e: return m_phase >> 10; + + case 0x10: return m_ctrl0; + case 0x11: return m_ctrl1; + + case 0x14: return m_in_irq; + case 0x18: return m_out_irq; + + default: + logerror("reg_r %02x\n", offset); + return 0; + } } -void awacs_device::set_dma_base(address_space &space, int offset0, int offset1) +//------------------------------------------------- +// write - write to the chip's registers and internal RAM +//------------------------------------------------- + +void awacs_device::write(offs_t offset, uint8_t data) { - m_dma_space = &space; - m_dma_offset_0 = offset0; - m_dma_offset_1 = offset1; + switch (offset) { + case 0x00: + m_extend = data & 0x80; + if(m_extend) { + m_ext_command = data & 0x40; + m_ext_address = (m_ext_address & 0xf) | ((data & 0x1f) << 4); + logerror("extended command=%d adr=%03x data=%03x\n", m_ext_command, m_ext_address, m_ext_data); + } else { + m_codec0 = data & 0x7f; + logerror("codec mute=%s iml=%x imr=%x gain_l=%x\n", + m_codec0 & 0x40 ? "on" : "off", + m_codec0 & 0x20 ? "on" : "off", + m_codec0 & 0x10 ? "on" : "off", + m_codec0 & 0xf); + } + break; + + case 0x01: + if(m_extend) { + m_ext_address = (m_ext_address & 0x3f0) | ((data & 0xf0) >> 4); + m_ext_data = (m_ext_data & 0x0ff) | ((data & 0xf) << 8); + logerror("extended command=%d adr=%03x data=%03x\n", m_ext_command, m_ext_address, m_ext_data); + } else { + m_codec1 = data; + logerror("codec gain_r=%x att_l=%x\n", + (m_codec1 & 0xf0) >> 4, + m_codec1 & 0xf); + } + break; + + case 0x02: + if(m_extend) { + m_ext_data = (m_ext_data & 0xf00) | data; + logerror("extended command=%d adr=%03x data=%03x\n", m_ext_command, m_ext_address, m_ext_data); + } else { + m_codec2 = data; + m_output_port_cb(data & 0xf); + logerror("codec att_r=%x output_port=%x\n", + (m_codec2 & 0xf0) >> 4, + m_codec2 & 0xf); + } + break; + + case 0x08: + m_buffer_size = (m_buffer_size & 0xfc) | ((data & 7) << 8); + logerror("buffer size %03x\n", m_buffer_size); + break; + + case 0x09: + m_buffer_size = (m_buffer_size & 0x700) | (data & 0xfc); + logerror("buffer size %03x\n", m_buffer_size); + break; + + case 0x10: + m_ctrl0 = data; + m_stream->set_sample_rate(clock()/64/divider[(m_ctrl0 >> 1) & 3]); + + logerror("ctr0_w %02x - play=%s rate=%d\n", m_ctrl0, m_ctrl0 & 1 ? "on" : "off", clock()/64/divider[(m_ctrl0 >> 1) & 3]); + break; + + case 0x11: + m_ctrl1 = data; + logerror("ctr1_w %02x - record=%s frame_irq=%s sf_out=%x sf_in=%x\n", m_ctrl1, + m_ctrl1 & 0x80 ? "on" : "off", + m_ctrl1 & 0x40 ? "on" : "off", + (m_ctrl1 >> 2) & 0xf, + m_ctrl1 & 3); + break; + + + case 0x14: + m_in_irq = ((m_in_irq & 0xf0) & (~data)) | (data & 0x0f); + logerror("input irq if1=%d if0=%d cerr=%d ovr=%d ie1=%d ie0=%d oe=%d, ce=%d\n", + BIT(m_in_irq, 7), + BIT(m_in_irq, 6), + BIT(m_in_irq, 5), + BIT(m_in_irq, 4), + BIT(m_in_irq, 3), + BIT(m_in_irq, 2), + BIT(m_in_irq, 1), + BIT(m_in_irq, 0)); + update_irq(); + break; + + case 0x18: + m_out_irq = ((m_out_irq & 0xe0) & (~data)) | (data & 0x0e); + logerror("output irq if1=%d if0=%d und=%d ie1=%d ie0=%d ue=%d\n", + BIT(m_out_irq, 7), + BIT(m_out_irq, 6), + BIT(m_out_irq, 5), + BIT(m_out_irq, 3), + BIT(m_out_irq, 2), + BIT(m_out_irq, 1)); + update_irq(); + break; + + default: + logerror("reg_w %02x, %02x\n", offset, data); + break; + } } |