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sunwise/anoworld.cpp: enable audio CPU

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This commit is contained in:
angelosa 2024-06-15 15:50:27 +02:00
parent e802ddbc2f
commit fefb514552
1 changed files with 59 additions and 20 deletions
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79
src/mame/sunwise/anoworld.cpp
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@ -8,7 +8,11 @@ TODO:
- Identify irq sources ($24 timer, $26 VBLANK?, $20 or $22 quadrature encoder);
- Z80DMA never sends a ready signal, workaround by forcing is_ready fn to 1;
- Verify data ROM bank;
- Sound;
- Sound i/f not fully understood:
\- no irq from CTC, hooking up YM irq in daisy chain will fail device validation;
\- sound ROMs mainly decodes as regular 8-bit DAC, mono, 8000 Hz.
\- Denote they ends abruptly towards the end (bad ROMs?).
\- is output connected to CTC ZC0 / ZC1 as DAC1BIT?
====================================================================================================
@ -45,6 +49,7 @@ video output
#include "emu.h"
#include "cpu/z80/z80.h"
#include "machine/gen_latch.h"
#include "machine/i8255.h"
#include "machine/msm6242.h"
#include "machine/z80ctc.h"
@ -80,6 +85,7 @@ public:
, m_maincpu(*this, "maincpu")
, m_audiocpu(*this, "audiocpu")
, m_dma(*this, "dma")
, m_soundlatch(*this, "soundlatch%u", 0U)
, m_palette(*this, "palette")
, m_gfxdecode(*this, "gfxdecode")
, m_video_view(*this, "video_view")
@ -98,8 +104,9 @@ protected:
private:
required_device<z80_device> m_maincpu;
required_device<cpu_device> m_audiocpu;
required_device<z80_device> m_audiocpu;
required_device<z80dma_device> m_dma;
required_device_array<generic_latch_8_device, 2> m_soundlatch;
required_device<palette_device> m_palette;
required_device<gfxdecode_device> m_gfxdecode;
@ -247,7 +254,7 @@ void anoworld_state::main_io_map(address_map &map)
map(0x20, 0x2f).rw("rtc", FUNC(msm6242_device::read), FUNC(msm6242_device::write));
map(0x30, 0x33).rw("ppi0", FUNC(i8255_device::read), FUNC(i8255_device::write));
map(0x40, 0x43).rw("ppi1", FUNC(i8255_device::read), FUNC(i8255_device::write));
// writes goes to outputs, cfr. second item in Test Mode
// writes goes to outputs, cfr. second item in Test Mode
map(0x50, 0x50).portr("IN0").nopw();
map(0x60, 0x60).portr("IN1").nopw();
}
@ -263,19 +270,25 @@ void anoworld_state::audio_program_map(address_map &map)
{
map(0x0000, 0x1fff).rom();
map(0x4000, 0x47ff).ram();
map(0xc000, 0xffff).bankr(m_audiobank);
map(0x8000, 0xffff).bankr(m_audiobank);
}
void anoworld_state::audio_io_map(address_map &map)
{
map.global_mask(0xff);
//map(0x00, 0x03).rw("ctc1", FUNC(z80ctc_device::read), FUNC(z80ctc_device::write)); //TODO: maybe
//map(0x04, 0x07).rw("ppi1", FUNC(i8255_device::read), FUNC(i8255_device::write)); //TODO: maybe. 0x05 seems to set the audio bank
//map(0x08, 0x09).w // YM?
//map(0x0c, 0x0c).r? // latch? irq ack?
map(0x00, 0x03).rw("ctc1", FUNC(z80ctc_device::read), FUNC(z80ctc_device::write));
map(0x04, 0x07).rw("ppi2", FUNC(i8255_device::read), FUNC(i8255_device::write));
map(0x08, 0x09).rw("ym", FUNC(ym3812_device::read), FUNC(ym3812_device::write));
map(0x0c, 0x0c).r(m_soundlatch[0], FUNC(generic_latch_8_device::read));
}
static const z80_daisy_config audio_daisy_chain[] =
{
// { "ym" },
{ "ctc1" },
{ nullptr }
};
// TODO: Test Mode shows abbreviated forms, identify them all
static INPUT_PORTS_START( anoworld )
@ -350,7 +363,7 @@ void anoworld_state::machine_start()
m_databank->configure_entries(0, 0x40, memregion("data")->base(), 0x4000);
m_databank->set_entry(0);
m_audiobank->configure_entries(0, 32, memregion("audiocpu")->base(), 0x4000);
m_audiobank->configure_entries(0, 16, memregion("audiocpu")->base(), 0x8000);
m_audiobank->set_entry(1);
}
@ -360,7 +373,7 @@ void anoworld_state::machine_reset()
}
/*
* Irq table:
* main IRQ table:
* $+10 (DMA) writes to $9e61
* $+20 (CTC ch0, counter mode) increments or decrements $9e88
* $+22 (CTC ch1, counter mode) increments or decrements $9e8a
@ -376,9 +389,10 @@ void anoworld_state::anoworld(machine_config &config)
m_maincpu->set_addrmap(AS_IO, &anoworld_state::main_io_map);
m_maincpu->set_daisy_config(main_daisy_chain);
Z80(config, m_audiocpu, 4_MHz_XTAL).set_disable();
Z80(config, m_audiocpu, 4_MHz_XTAL);
m_audiocpu->set_addrmap(AS_PROGRAM, &anoworld_state::audio_program_map);
m_audiocpu->set_addrmap(AS_IO, &anoworld_state::audio_io_map);
m_audiocpu->set_daisy_config(audio_daisy_chain);
z80ctc_device &ctc0(Z80CTC(config, "ctc0", 4_MHz_XTAL));
ctc0.intr_callback().set_inputline("maincpu", 0);
@ -391,16 +405,19 @@ void anoworld_state::anoworld(machine_config &config)
m_dma->in_iorq_callback().set(FUNC(anoworld_state::dma_io_r));
m_dma->out_iorq_callback().set(FUNC(anoworld_state::dma_io_w));
GENERIC_LATCH_8(config, m_soundlatch[0]);
GENERIC_LATCH_8(config, m_soundlatch[1]);
z80ctc_device &ctc1(Z80CTC(config, "ctc1", 4_MHz_XTAL));
ctc1.intr_callback().set([this] (int state) { LOGPORTS("%s: CTC1 INTR handler %d\n", machine().describe_context(), state); });
ctc1.zc_callback<0>().set([this] (int state) { LOGPORTS("%s: CTC1 ZC0 handler %d\n", machine().describe_context(), state); });
ctc1.zc_callback<1>().set([this] (int state) { LOGPORTS("%s: CTC1 ZC1 handler %d\n", machine().describe_context(), state); });
ctc1.zc_callback<2>().set([this] (int state) { LOGPORTS("%s: CTC1 ZC2 handler %d\n", machine().describe_context(), state); });
ctc1.intr_callback().set_inputline("audiocpu", 0);
// Triggers ZC0 and ZC1, for DAC playback?
// ctc1.zc_callback<0>().set([this] (int state) { LOGPORTS("%s: CTC1 ZC0 handler %d\n", machine().describe_context(), state); });
// ctc1.zc_callback<1>().set([this] (int state) { LOGPORTS("%s: CTC1 ZC1 handler %d\n", machine().describe_context(), state); });
// ctc1.zc_callback<2>().set([this] (int state) { LOGPORTS("%s: CTC1 ZC2 handler %d\n", machine().describe_context(), state); });
i8255_device &ppi0(I8255A(config, "ppi0")); // NEC D8255AC-2
// PA (input) / PB (output): sound latches
ppi0.in_pa_callback().set([this] () { LOGPORTS("%s: PPI0 port A in\n", machine().describe_context()); return uint8_t(0); });
ppi0.in_pb_callback().set([this] () { LOGPORTS("%s: PPI0 port B in\n", machine().describe_context()); return uint8_t(0); });
ppi0.in_pa_callback().set(m_soundlatch[1], FUNC(generic_latch_8_device::read));
ppi0.in_pc_callback().set([this] () {
// punts to an insert coin screen if this is 0xff,
// reacts to D0-D7 signals in test mode.
@ -408,8 +425,8 @@ void anoworld_state::anoworld(machine_config &config)
(void)this;
return uint8_t(0);
});
ppi0.out_pa_callback().set([this] (uint8_t data) { LOGPORTS("%s: PPI0 port A out %02x\n", machine().describe_context(), data); });
ppi0.out_pb_callback().set([this] (uint8_t data) { LOGPORTS("%s: PPI0 port B out %02x\n", machine().describe_context(), data); });
// voice = 0x40, sound = 0x81
ppi0.out_pb_callback().set(m_soundlatch[0], FUNC(generic_latch_8_device::write));
ppi0.out_pc_callback().set([this] (uint8_t data) { LOGPORTS("%s: PPI0 port C out %02x\n", machine().describe_context(), data); });
i8255_device &ppi1(I8255A(config, "ppi1")); // NEC D8255AC-2
@ -417,10 +434,32 @@ void anoworld_state::anoworld(machine_config &config)
ppi1.out_pb_callback().set([this] (uint8_t data) { LOGPORTS("%s: PPI1 port B out %02x\n", machine().describe_context(), data); });
ppi1.out_pc_callback().set(FUNC(anoworld_state::video_bank_w));
i8255_device &ppi2(I8255A(config, "ppi2")); // NEC D8255AC-2
ppi2.in_pc_callback().set([this] () {
LOGPORTS("%s: PPI2 port C in\n", machine().describe_context());
return uint8_t(0);
});
ppi2.out_pa_callback().set(m_soundlatch[1], FUNC(generic_latch_8_device::write));
ppi2.out_pb_callback().set([this] (uint8_t data) {
// HACK: avoid initializing bank to null at PPI init
if (data == 0xff)
return;
if (data & 0xf0)
LOGPORTS("%s: PPI2 (sound) port B out %02x\n", machine().describe_context(), data);
// TODO: confirm me
const u8 sound_bank = std::min((data & 0xf) + 1, 0xf);
m_audiobank->set_entry(sound_bank);
});
ppi2.out_pc_callback().set([this] (uint8_t data) {
//LOGPORTS("%s: PPI2 port C out %02x\n", machine().describe_context(), data);
m_soundlatch[0]->clear_w();
});
msm6242_device &rtc(MSM6242(config, "rtc", 32.768_kHz_XTAL));
rtc.out_int_handler().set("ctc0", FUNC(z80ctc_device::trg3)); // source guessed
screen_device &screen(SCREEN(config, "screen", SCREEN_TYPE_RASTER)); // TODO: everything
screen_device &screen(SCREEN(config, "screen", SCREEN_TYPE_RASTER));
screen.set_refresh_hz(60);
screen.set_vblank_time(ATTOSECONDS_IN_USEC(0));
screen.set_size(32*8, 32*8);