// license:BSD-3-Clause
// copyright-holders:Mike Balfour
/***************************************************************************
Irem M27 hardware
If you have any questions about how this driver works, don't hesitate to
ask. - Mike Balfour (mab22@po.cwru.edu)
****************************************************************************/
#include "emu.h"
#include "includes/redalert.h"
#include "cpu/m6800/m6800.h"
#include "cpu/m6502/m6502.h"
#include "machine/rescap.h"
#include "speaker.h"
#define REDALERT_AUDIO_PCB_CLOCK (XTAL(12'500'000))
#define REDALERT_AUDIO_CPU_CLOCK (REDALERT_AUDIO_PCB_CLOCK / 12)
#define REDALERT_AY8910_CLOCK (REDALERT_AUDIO_PCB_CLOCK / 6)
#define REDALERT_AUDIO_CPU_IRQ_FREQ (PERIOD_OF_555_ASTABLE(RES_K(120), RES_K(2.7), CAP_U(0.01)))
#define REDALERT_AUDIO_CPU_IRQ_TIME (PERIOD_OF_555_ASTABLE(RES_K(2.7), 0, CAP_U(0.01))) /* 555 discharge time */
#define REDALERT_VOICE_PCB_CLOCK (XTAL(6'000'000))
#define REDALERT_VOICE_CPU_CLOCK (REDALERT_VOICE_PCB_CLOCK)
#define REDALERT_HC55516_CLOCK (REDALERT_VOICE_PCB_CLOCK / 256)
#define DEMONEYE_AUDIO_PCB_CLOCK (XTAL(3'579'545))
#define DEMONEYE_AUDIO_CPU_CLOCK (DEMONEYE_AUDIO_PCB_CLOCK) /* what's the real divisor? */
#define DEMONEYE_AY8910_CLOCK (DEMONEYE_AUDIO_PCB_CLOCK / 2) /* what's the real divisor? */
TIMER_CALLBACK_MEMBER(redalert_state::audio_irq_on)
{
if (m_sndpia.found())
m_sndpia->cb1_w(0); // guess
else
m_audiocpu->set_input_line(m6502_device::IRQ_LINE, ASSERT_LINE);
m_audio_irq_off_timer->adjust(REDALERT_AUDIO_CPU_IRQ_TIME);
}
TIMER_CALLBACK_MEMBER(redalert_state::audio_irq_off)
{
if (m_sndpia.found())
m_sndpia->cb1_w(1); // guess
else
m_audiocpu->set_input_line(m6502_device::IRQ_LINE, CLEAR_LINE);
}
/*************************************
*
* Red Alert analog sounds
*
*************************************/
void redalert_state::redalert_analog_w(uint8_t data)
{
/* this port triggers analog sounds
D0 = Formation Aircraft?
D1 = Dive bombers?
D2 = Helicopters?
D3 = Launcher firing?
D4 = Explosion #1?
D5 = Explosion #2?
D6 = Explosion #3? */
logerror("Analog: %02X\n",data);
}
/*************************************
*
* Red Alert audio board
*
*************************************/
void redalert_state::redalert_audio_command_w(uint8_t data)
{
/* the byte is connected to port A of the AY8910 */
m_soundlatch->write(data);
m_sound_hs = 1;
/* D7 is also connected to the NMI input of the CPU -
the NMI is actually toggled by a 74121 (R1=27K, C10=330p) */
if ((data & 0x80) == 0x00)
m_audiocpu->pulse_input_line(INPUT_LINE_NMI, attotime::zero);
}
void redalert_state::redalert_AY8910_w(uint8_t data)
{
/* BC2 is connected to a pull-up resistor, so BC2=1 always */
switch (data & 0x03)
{
/* BC1=0, BDIR=0 : inactive */
case 0x00:
break;
/* BC1=1, BDIR=0 : read from PSG */
case 0x01:
m_sound_hs = 0;
m_ay8910_latch_1 = m_ay8910->data_r();
break;
/* BC1=0, BDIR=1 : write to PSG */
/* BC1=1, BDIR=1 : latch address */
case 0x02:
case 0x03:
default:
m_ay8910->data_address_w(data, m_ay8910_latch_2);
break;
}
}
uint8_t redalert_state::redalert_ay8910_latch_1_r()
{
return m_ay8910_latch_1;
}
void redalert_state::redalert_ay8910_latch_2_w(uint8_t data)
{
m_ay8910_latch_2 = data;
}
void redalert_state::redalert_audio_map(address_map &map)
{
map.global_mask(0x7fff);
map(0x0000, 0x03ff).mirror(0x0c00).ram();
map(0x1000, 0x1000).mirror(0x0ffe).nopr().w(FUNC(redalert_state::redalert_AY8910_w));
map(0x1001, 0x1001).mirror(0x0ffe).rw(FUNC(redalert_state::redalert_ay8910_latch_1_r), FUNC(redalert_state::redalert_ay8910_latch_2_w));
map(0x2000, 0x6fff).noprw();
map(0x7000, 0x77ff).mirror(0x0800).rom();
}
void redalert_state::panther_audio_map(address_map &map)
{
redalert_audio_map(map);
// Panther maps these two to $2000 while Red Alert to $1000, different PAL addressing?
map(0x1000, 0x1fff).unmaprw();
map(0x2000, 0x2000).mirror(0x0ffe).nopr().w(FUNC(redalert_state::redalert_AY8910_w));
map(0x2001, 0x2001).mirror(0x0ffe).rw(FUNC(redalert_state::redalert_ay8910_latch_1_r), FUNC(redalert_state::redalert_ay8910_latch_2_w));
}
/*************************************
*
* Red Alert audio board
*
*************************************/
void redalert_state::sound_start()
{
m_audio_irq_on_timer = machine().scheduler().timer_alloc(timer_expired_delegate(FUNC(redalert_state::audio_irq_on), this));
m_audio_irq_off_timer = machine().scheduler().timer_alloc(timer_expired_delegate(FUNC(redalert_state::audio_irq_off), this));
m_audio_irq_on_timer->adjust(REDALERT_AUDIO_CPU_IRQ_FREQ, 0, REDALERT_AUDIO_CPU_IRQ_FREQ);
save_item(NAME(m_sound_hs));
save_item(NAME(m_ay8910_latch_1));
save_item(NAME(m_ay8910_latch_2));
}
/*************************************
*
* Red Alert voice board
*
*************************************/
void redalert_state::redalert_voice_command_w(uint8_t data)
{
m_soundlatch2->write((data & 0x78) >> 3);
m_voicecpu->set_input_line(I8085_RST75_LINE, (~data & 0x80) ? ASSERT_LINE : CLEAR_LINE);
}
WRITE_LINE_MEMBER(redalert_state::sod_callback)
{
m_cvsd->digit_w(state);
}
READ_LINE_MEMBER(redalert_state::sid_callback)
{
return m_cvsd->clock_state_r();
}
void redalert_state::redalert_voice_map(address_map &map)
{
map(0x0000, 0x3fff).rom();
map(0x4000, 0x7fff).noprw();
map(0x8000, 0x83ff).mirror(0x3c00).ram();
map(0xc000, 0xc000).mirror(0x3fff).r(m_soundlatch2, FUNC(generic_latch_8_device::read)).nopw();
}
/*************************************
*
* Red Alert audio board (m37b)
*
*************************************/
void redalert_state::redalert_audio_m37b(machine_config &config)
{
M6502(config, m_audiocpu, REDALERT_AUDIO_CPU_CLOCK);
m_audiocpu->set_addrmap(AS_PROGRAM, &redalert_state::redalert_audio_map);
GENERIC_LATCH_8(config, m_soundlatch);
AY8910(config, m_ay8910, REDALERT_AY8910_CLOCK);
m_ay8910->port_a_read_callback().set(m_soundlatch, FUNC(generic_latch_8_device::read));
m_ay8910->port_b_write_callback().set(FUNC(redalert_state::redalert_analog_w));
m_ay8910->add_route(0, "mono", 0.50);
m_ay8910->add_route(1, "mono", 0.50);
/* channel C is used a noise source and is not connected to a speaker */
}
/*************************************
*
* Red Alert voice board (ue17b)
*
*************************************/
void redalert_state::redalert_audio_voice(machine_config &config)
{
I8085A(config, m_voicecpu, REDALERT_VOICE_CPU_CLOCK);
m_voicecpu->set_addrmap(AS_PROGRAM, &redalert_state::redalert_voice_map);
m_voicecpu->in_sid_func().set(FUNC(redalert_state::sid_callback));
m_voicecpu->out_sod_func().set(FUNC(redalert_state::sod_callback));
GENERIC_LATCH_8(config, m_soundlatch2);
HC55516(config, m_cvsd, REDALERT_HC55516_CLOCK).add_route(ALL_OUTPUTS, "mono", 0.50);
}
/*************************************
*
* Red Alert
*
*************************************/
void redalert_state::redalert_audio(machine_config &config)
{
SPEAKER(config, "mono").front_center();
redalert_audio_m37b(config);
redalert_audio_voice(config);
}
/*************************************
*
* Red Alert
*
*************************************/
void redalert_state::ww3_audio(machine_config &config)
{
SPEAKER(config, "mono").front_center();
redalert_audio_m37b(config);
}
void redalert_state::panther_audio(machine_config &config)
{
SPEAKER(config, "mono").front_center();
redalert_audio_m37b(config);
m_audiocpu->set_addrmap(AS_PROGRAM, &redalert_state::panther_audio_map);
}
/*************************************
*
* Demoneye-X audio board
*
*************************************/
void redalert_state::demoneye_audio_command_w(uint8_t data)
{
/* the byte is connected to port A of the AY8910 */
m_soundlatch->write(data);
m_audiocpu->pulse_input_line(INPUT_LINE_NMI, attotime::zero);
}
void redalert_state::demoneye_ay8910_latch_1_w(uint8_t data)
{
m_ay8910_latch_1 = data;
}
uint8_t redalert_state::demoneye_ay8910_latch_2_r()
{
return m_ay8910_latch_2;
}
void redalert_state::demoneye_ay8910_data_w(uint8_t data)
{
switch (m_ay8910_latch_1 & 0x03)
{
case 0x00:
if (m_ay8910_latch_1 & 0x10)
m_ay[0]->data_w(data);
if (m_ay8910_latch_1 & 0x20)
m_ay[1]->data_w(data);
break;
case 0x01:
if (m_ay8910_latch_1 & 0x10)
m_ay8910_latch_2 = m_ay[0]->data_r();
if (m_ay8910_latch_1 & 0x20)
m_ay8910_latch_2 = m_ay[1]->data_r();
break;
case 0x03:
if (m_ay8910_latch_1 & 0x10)
m_ay[0]->address_w(data);
if (m_ay8910_latch_1 & 0x20)
m_ay[1]->address_w(data);
break;
default:
logerror("demoneye_ay8910_data_w called with latch %02X data %02X\n", m_ay8910_latch_1, data);
break;
}
}
void redalert_state::demoneye_audio_map(address_map &map)
{
map(0x0500, 0x0503).mirror(0xc000).rw(m_sndpia, FUNC(pia6821_device::read), FUNC(pia6821_device::write));
map(0x2000, 0x3fff).mirror(0xc000).rom();
}
/*************************************
*
* Demoneye-X machine driver
*
*************************************/
void redalert_state::demoneye_audio(machine_config &config)
{
M6802(config, m_audiocpu, DEMONEYE_AUDIO_CPU_CLOCK);
m_audiocpu->set_addrmap(AS_PROGRAM, &redalert_state::demoneye_audio_map);
PIA6821(config, m_sndpia);
m_sndpia->readpa_handler().set(FUNC(redalert_state::demoneye_ay8910_latch_2_r));
m_sndpia->writepa_handler().set(FUNC(redalert_state::demoneye_ay8910_data_w));
m_sndpia->writepb_handler().set(FUNC(redalert_state::demoneye_ay8910_latch_1_w));
m_sndpia->irqb_handler().set_inputline(m_audiocpu, M6802_IRQ_LINE);
SPEAKER(config, "mono").front_center();
GENERIC_LATCH_8(config, m_soundlatch);
AY8910(config, m_ay[0], DEMONEYE_AY8910_CLOCK);
m_ay[0]->add_route(ALL_OUTPUTS, "mono", 0.50);
AY8910(config, m_ay[1], DEMONEYE_AY8910_CLOCK);
m_ay[1]->port_a_read_callback().set(m_soundlatch, FUNC(generic_latch_8_device::read));
m_ay[1]->add_route(ALL_OUTPUTS, "mono", 0.50);
}