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Diffstat (limited to 'src/devices/sound/dave.cpp')
-rw-r--r--src/devices/sound/dave.cpp625
1 files changed, 0 insertions, 625 deletions
diff --git a/src/devices/sound/dave.cpp b/src/devices/sound/dave.cpp
deleted file mode 100644
index 4ca7248a520..00000000000
--- a/src/devices/sound/dave.cpp
+++ /dev/null
@@ -1,625 +0,0 @@
-// license:BSD-3-Clause
-// copyright-holders:Curt Coder
-/**********************************************************************
-
- Intelligent Designs DAVE emulation
-
-**********************************************************************/
-
-#include "emu.h"
-#include "dave.h"
-
-//#define VERBOSE 1
-#include "logmacro.h"
-
-
-//**************************************************************************
-// MACROS / CONSTANTS
-//**************************************************************************
-
-#define STEP 0x08000
-
-
-
-//**************************************************************************
-// DEVICE DEFINITIONS
-//**************************************************************************
-
-DEFINE_DEVICE_TYPE(DAVE, dave_device, "dave", "Inteligent Designs DAVE")
-
-
-void dave_device::z80_program_map(address_map &map)
-{
- map(0x0000, 0xffff).rw(FUNC(dave_device::program_r), FUNC(dave_device::program_w));
-}
-
-void dave_device::z80_io_map(address_map &map)
-{
- map(0x0000, 0xffff).rw(FUNC(dave_device::io_r), FUNC(dave_device::io_w));
-}
-
-
-void dave_device::program_map(address_map &map)
-{
-}
-
-void dave_device::io_map(address_map &map)
-{
-}
-
-
-
-//**************************************************************************
-// LIVE DEVICE
-//**************************************************************************
-
-//-------------------------------------------------
-// dave_device - constructor
-//-------------------------------------------------
-
-dave_device::dave_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock)
- : device_t(mconfig, DAVE, tag, owner, clock),
- device_memory_interface(mconfig, *this),
- device_sound_interface(mconfig, *this),
- m_program_space_config("program", ENDIANNESS_LITTLE, 8, 22, 0, address_map_constructor(FUNC(dave_device::program_map), this)),
- m_io_space_config("i/o", ENDIANNESS_LITTLE, 8, 16, 0, address_map_constructor(FUNC(dave_device::io_map), this)),
- m_write_irq(*this),
- m_write_lh(*this),
- m_write_rh(*this),
- m_irq_status(0)
-{
-}
-
-
-//-------------------------------------------------
-// device_start - device-specific startup
-//-------------------------------------------------
-
-void dave_device::device_start()
-{
- // resolve callbacks
- m_write_irq.resolve_safe();
- m_write_lh.resolve_safe();
- m_write_rh.resolve_safe();
-
- // allocate timers
- m_timer_1hz = timer_alloc(TIMER_1HZ);
- m_timer_1hz->adjust(attotime::from_hz(2), 0, attotime::from_hz(2));
-
- m_timer_50hz = timer_alloc(TIMER_50HZ);
- m_timer_50hz->adjust(attotime::from_hz(2000), 0, attotime::from_hz(2000));
-
- // state saving
- save_item(NAME(m_segment));
- save_item(NAME(m_irq_status));
- save_item(NAME(m_irq_enable));
- save_item(NAME(m_period));
- save_item(NAME(m_count));
- save_item(NAME(m_level));
- save_item(NAME(m_level_or));
- save_item(NAME(m_level_and));
- save_item(NAME(m_mame_volumes));
-
- for (auto & elem : m_period)
- elem = (STEP * machine().sample_rate()) / 125000;
-
- for (auto & elem : m_count)
- elem = (STEP * machine().sample_rate()) / 125000;
-
- for (auto & elem : m_level)
- elem = 0;
-
- for (auto & elem : m_level_or)
- elem = 0;
-
- for (auto & elem : m_level_and)
- elem = 0;
-
- for (auto & elem : m_mame_volumes)
- elem = 0;
-
- /* dave has 3 tone channels and 1 noise channel.
- the volumes are mixed internally and output as left and right volume */
-
- /* 3 tone channels + 1 noise channel */
- m_sound_stream_var = machine().sound().stream_alloc(*this, 0, 2, machine().sample_rate());
-}
-
-
-//-------------------------------------------------
-// device_reset - device-specific reset
-//-------------------------------------------------
-
-void dave_device::device_reset()
-{
- m_write_irq(CLEAR_LINE);
-
- for (auto & elem : m_segment)
- elem = 0;
-
- m_irq_status = 0;
- m_irq_enable = 0;
-
- for (auto & elem : m_regs)
- elem = 0;
-}
-
-
-//-------------------------------------------------
-// device_timer - handler timer events
-//-------------------------------------------------
-
-void dave_device::device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr)
-{
- switch (id)
- {
- case TIMER_1HZ:
- m_irq_status ^= IRQ_1HZ_DIVIDER;
-
- if (m_irq_status & IRQ_1HZ_DIVIDER)
- m_irq_status |= IRQ_1HZ_LATCH;
- break;
-
- case TIMER_50HZ:
- m_irq_status ^= IRQ_50HZ_DIVIDER;
-
- if (m_irq_status & IRQ_50HZ_DIVIDER)
- m_irq_status |= IRQ_50HZ_LATCH;
- break;
- }
-
- update_interrupt();
-}
-
-
-//-------------------------------------------------
-// memory_space_config - return a description of
-// any address spaces owned by this device
-//-------------------------------------------------
-
-device_memory_interface::space_config_vector dave_device::memory_space_config() const
-{
- return space_config_vector {
- std::make_pair(AS_PROGRAM, &m_program_space_config),
- std::make_pair(AS_IO, &m_io_space_config)
- };
-}
-
-
-//-------------------------------------------------
-// sound_stream_update - handle a stream update
-//-------------------------------------------------
-
-void dave_device::sound_stream_update(sound_stream &stream, stream_sample_t **inputs, stream_sample_t **outputs, int samples)
-{
- stream_sample_t *buffer1, *buffer2;
- /* 0 = channel 0 left volume, 1 = channel 0 right volume,
- 2 = channel 1 left volume, 3 = channel 1 right volume,
- 4 = channel 2 left volume, 5 = channel 2 right volume
- 6 = noise channel left volume, 7 = noise channel right volume */
- int output_volumes[8];
- int left_volume;
- int right_volume;
-
- //logerror("sound update!\n");
-
- buffer1 = outputs[0];
- buffer2 = outputs[1];
-
- while (samples)
- {
- int vol[4];
-
- /* vol[] keeps track of how long each square wave stays */
- /* in the 1 position during the sample period. */
- vol[0] = vol[1] = vol[2] = vol[3] = 0;
-
- for (int i = 0; i < 3; i++)
- {
- if ((m_regs[7] & (1 << i))==0)
- {
- if (m_level[i]) vol[i] += m_count[i];
- m_count[i] -= STEP;
- /* Period[i] is the half period of the square wave. Here, in each */
- /* loop I add Period[i] twice, so that at the end of the loop the */
- /* square wave is in the same status (0 or 1) it was at the start. */
- /* vol[i] is also incremented by Period[i], since the wave has been 1 */
- /* exactly half of the time, regardless of the initial position. */
- /* If we exit the loop in the middle, Output[i] has to be inverted */
- /* and vol[i] incremented only if the exit status of the square */
- /* wave is 1. */
- while (m_count[i] <= 0)
- {
- m_count[i] += m_period[i];
- if (m_count[i] > 0)
- {
- m_level[i] ^= 0x0ffffffff;
- if (m_level[i]) vol[i] += m_period[i];
- break;
- }
- m_count[i] += m_period[i];
- vol[i] += m_period[i];
- }
- if (m_level[i])
- vol[i] -= m_count[i];
- }
- }
-
- /* update volume outputs */
-
- /* setup output volumes for each channel */
- /* channel 0 */
- output_volumes[0] = ((m_level[0] & m_level_and[0]) | m_level_or[0]) & m_mame_volumes[0];
- output_volumes[1] = ((m_level[0] & m_level_and[1]) | m_level_or[1]) & m_mame_volumes[4];
- /* channel 1 */
- output_volumes[2] = ((m_level[1] & m_level_and[2]) | m_level_or[2]) & m_mame_volumes[1];
- output_volumes[3] = ((m_level[1] & m_level_and[3]) | m_level_or[3]) & m_mame_volumes[5];
- /* channel 2 */
- output_volumes[4] = ((m_level[2] & m_level_and[4]) | m_level_or[4]) & m_mame_volumes[2];
- output_volumes[5] = ((m_level[2] & m_level_and[5]) | m_level_or[5]) & m_mame_volumes[6];
- /* channel 3 */
- output_volumes[6] = ((m_level[3] & m_level_and[6]) | m_level_or[6]) & m_mame_volumes[3];
- output_volumes[7] = ((m_level[3] & m_level_and[7]) | m_level_or[7]) & m_mame_volumes[7];
-
- left_volume = (output_volumes[0] + output_volumes[2] + output_volumes[4] + output_volumes[6])>>2;
- right_volume = (output_volumes[1] + output_volumes[3] + output_volumes[5] + output_volumes[7])>>2;
-
- *(buffer1++) = left_volume;
- *(buffer2++) = right_volume;
-
- samples--;
- }
-}
-
-
-//-------------------------------------------------
-// int1_w - interrupt 1 write
-//-------------------------------------------------
-
-WRITE_LINE_MEMBER( dave_device::int1_w )
-{
- if (!(m_irq_status & IRQ_INT1) && state)
- m_irq_status |= IRQ_INT1_LATCH;
-
- if (state)
- m_irq_status |= IRQ_INT1;
- else
- m_irq_status &= ~IRQ_INT1;
-
- update_interrupt();
-}
-
-
-//-------------------------------------------------
-// int2_w - interrupt 2 write
-//-------------------------------------------------
-
-WRITE_LINE_MEMBER( dave_device::int2_w )
-{
- if (!(m_irq_status & IRQ_INT2) && state)
- m_irq_status |= IRQ_INT2_LATCH;
-
- if (state)
- m_irq_status |= IRQ_INT2;
- else
- m_irq_status &= ~IRQ_INT2;
-
- update_interrupt();
-}
-
-
-//-------------------------------------------------
-// program_r - program space read
-//-------------------------------------------------
-
-READ8_MEMBER( dave_device::program_r )
-{
- uint8_t segment = m_segment[offset >> 14];
- offset = (segment << 14) | (offset & 0x3fff);
-
- return this->space(AS_PROGRAM).read_byte(offset);
-}
-
-
-//-------------------------------------------------
-// program_w - program space write
-//-------------------------------------------------
-
-WRITE8_MEMBER( dave_device::program_w )
-{
- uint8_t segment = m_segment[offset >> 14];
- offset = (segment << 14) | (offset & 0x3fff);
-
- this->space(AS_PROGRAM).write_byte(offset, data);
-}
-
-
-//-------------------------------------------------
-// io_r - I/O space read
-//-------------------------------------------------
-
-READ8_MEMBER( dave_device::io_r )
-{
- uint8_t data = 0;
-
- switch (offset & 0xff)
- {
- case 0xa0:
- case 0xa1:
- case 0xa2:
- case 0xa3:
- case 0xa4:
- case 0xa5:
- case 0xa6:
- case 0xa7:
- case 0xa8:
- case 0xa9:
- case 0xaa:
- case 0xab:
- case 0xac:
- case 0xad:
- case 0xae:
- case 0xaf:
- case 0xb8:
- case 0xb9:
- case 0xba:
- case 0xbb:
- case 0xbc:
- case 0xbd:
- case 0xbe:
- case 0xbf:
- data = 0xff;
- break;
-
- case 0xb0: case 0xb1: case 0xb2: case 0xb3:
- data = m_segment[offset & 0x03];
- break;
-
- case 0xb4:
- data = m_irq_status;
- break;
-
- default:
- data = this->space(AS_IO).read_byte(offset);
- }
-
- return data;
-}
-
-
-//-------------------------------------------------
-// io_w - I/O space write
-//-------------------------------------------------
-
-WRITE8_MEMBER( dave_device::io_w )
-{
- switch (offset & 0xff)
- {
- /* channel 0 down-counter */
- case 0xa0:
- case 0xa1:
- /* channel 1 down-counter */
- case 0xa2:
- case 0xa3:
- /* channel 2 down-counter */
- case 0xa4:
- case 0xa5:
- {
- int count = 0;
- int channel_index = (offset>>1)&3;
-
- /* Fout = 125,000 / (n+1) Hz */
-
- /* sample rate/clock */
-
-
- /* get down-count */
- switch (offset & 0x01)
- {
- case 0:
- {
- count = (data & 0x0ff) | ((m_regs[(offset & 0x1f) + 1] & 0x0f)<<8);
- }
- break;
-
- case 1:
- {
- count = (m_regs[(offset & 0x1f) - 1] & 0x0ff) | ((data & 0x0f)<<8);
-
- }
- break;
- }
-
- count++;
-
-
- m_period[channel_index] = ((STEP * machine().sample_rate())/125000) * count;
-
- m_regs[offset & 0x1f] = data;
- }
- break;
-
- /* channel 0 left volume */
- case 0xa8:
- /* channel 1 left volume */
- case 0xa9:
- /* channel 2 left volume */
- case 0xaa:
- /* noise channel left volume */
- case 0xab:
- /* channel 0 right volume */
- case 0xac:
- /* channel 1 right volume */
- case 0xad:
- /* channel 2 right volume */
- case 0xae:
- /* noise channel right volume */
- case 0xaf:
- {
- /* update mame version of volume from data written */
- /* 0x03f->0x07e00. Max is 0x07fff */
- /* I believe the volume is linear - to be checked! */
- m_mame_volumes[(offset & 0x1f) - 8] = (data & 0x03f) << 9;
-
- m_regs[offset & 0x1f] = data;
- }
- break;
-
- case 0xa6:
- break;
-
- case 0xa7:
- {
- /* force => the value of this register is forced regardless of the wave
- state,
- remove => this value is force to zero so that it has no influence over
- the final volume calculation, regardless of wave state
- use => the volume value is dependant on the wave state and is included
- in the final volume calculation */
-
- //logerror("selectable int ");
- switch ((data>>5) & 0x03)
- {
- case 0:
- {
- //logerror("1kHz\n");
- m_timer_50hz->adjust(attotime::from_hz(2000), 0, attotime::from_hz(2000));
- }
- break;
-
- case 1:
- {
- //logerror("50Hz\n");
- m_timer_50hz->adjust(attotime::from_hz(100), 0, attotime::from_hz(100));
- }
- break;
-
- case 2:
- {
- //logerror("tone channel 0\n");
- }
- break;
-
- case 3:
- {
- //logerror("tone channel 1\n");
- }
- break;
- }
-
-
-
- /* turn L.H audio output into D/A, outputting value in R8 */
- if (data & (1<<3))
- {
- /* force r8 value */
- m_level_or[0] = 0x0ffff;
- m_level_and[0] = 0x00;
-
- /* remove r9 value */
- m_level_or[2] = 0x000;
- m_level_and[2] = 0x00;
-
- /* remove r10 value */
- m_level_or[4] = 0x000;
- m_level_and[4] = 0x00;
-
- /* remove r11 value */
- m_level_or[6] = 0x000;
- m_level_and[6] = 0x00;
- }
- else
- {
- /* use r8 value */
- m_level_or[0] = 0x000;
- m_level_and[0] = 0xffff;
-
- /* use r9 value */
- m_level_or[2] = 0x000;
- m_level_and[2] = 0xffff;
-
- /* use r10 value */
- m_level_or[4] = 0x000;
- m_level_and[4] = 0xffff;
-
- /* use r11 value */
- m_level_or[6] = 0x000;
- m_level_and[6] = 0xffff;
- }
-
- /* turn L.H audio output into D/A, outputting value in R12 */
- if (data & (1<<4))
- {
- /* force r12 value */
- m_level_or[1] = 0x0ffff;
- m_level_and[1] = 0x00;
-
- /* remove r13 value */
- m_level_or[3] = 0x000;
- m_level_and[3] = 0x00;
-
- /* remove r14 value */
- m_level_or[5] = 0x000;
- m_level_and[5] = 0x00;
-
- /* remove r15 value */
- m_level_or[7] = 0x000;
- m_level_and[7] = 0x00;
- }
- else
- {
- /* use r12 value */
- m_level_or[1] = 0x000;
- m_level_and[1] = 0xffff;
-
- /* use r13 value */
- m_level_or[3] = 0x000;
- m_level_and[3] = 0xffff;
-
- /* use r14 value */
- m_level_or[5] = 0x000;
- m_level_and[5] = 0xffff;
-
- /* use r15 value */
- m_level_or[7] = 0x000;
- m_level_and[7] = 0xffff;
- }
-
- m_regs[offset & 0x1f] = data;
- }
- break;
-
- case 0xb0: case 0xb1: case 0xb2: case 0xb3:
- m_segment[offset & 0x03] = data;
-
- m_regs[offset & 0x1f] = data;
- break;
-
- case 0xb4:
- m_irq_enable = data;
- m_irq_status &= ~(m_irq_enable & IRQ_LATCH);
- update_interrupt();
-
- m_regs[offset & 0x1f] = data;
- break;
-
- case 0xbf:
- m_regs[offset & 0x1f] = data;
- break;
-
- default:
- this->space(AS_IO).write_byte(offset, data);
- }
-}
-
-
-//-------------------------------------------------
-// update_interrupt -
-//-------------------------------------------------
-
-void dave_device::update_interrupt()
-{
- int state = ((m_irq_status & (m_irq_enable << 1)) & IRQ_LATCH) ? ASSERT_LINE : CLEAR_LINE;
-
- m_write_irq(state);
-}