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vendetta: change 'not really vblank' flag to obj dma busy

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This commit is contained in:
hap 2022-12-12 01:23:11 +01:00
parent c47b2e3eb7
commit 1074e40578
1 changed files with 17 additions and 6 deletions
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21
src/mame/konami/vendetta.cpp
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@ -132,6 +132,8 @@ public:
void esckids(machine_config &config);
void vendetta(machine_config &config);
int obj_busy_r() { return m_obj_busy->enabled() ? 1 : 0; }
protected:
virtual void machine_start() override;
virtual void machine_reset() override;
@ -145,6 +147,7 @@ private:
// misc
uint8_t m_irq_enabled = 0;
emu_timer *m_nmi_blocked;
emu_timer *m_obj_busy;
// devices
required_device<konami_cpu_device> m_maincpu;
@ -465,10 +468,10 @@ static INPUT_PORTS_START( vendet4p )
PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNKNOWN )
PORT_START("EEPROM")
PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_UNKNOWN ) PORT_READ_LINE_DEVICE_MEMBER("eeprom", eeprom_serial_er5911_device, do_read)
PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_CUSTOM ) PORT_READ_LINE_DEVICE_MEMBER("eeprom", eeprom_serial_er5911_device, do_read)
PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_CUSTOM ) PORT_READ_LINE_DEVICE_MEMBER("eeprom", eeprom_serial_er5911_device, ready_read)
PORT_SERVICE_NO_TOGGLE(0x04, IP_ACTIVE_LOW)
PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_CUSTOM ) PORT_VBLANK("screen") // not really vblank, object related. It's timed, otherwise sprites flicker
PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_CUSTOM ) PORT_READ_LINE_MEMBER(vendetta_state, obj_busy_r)
PORT_BIT( 0xf0, IP_ACTIVE_LOW, IPT_UNUSED )
PORT_START( "EEPROMOUT" )
@ -521,10 +524,10 @@ static INPUT_PORTS_START( esckids )
PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNKNOWN )
PORT_START("EEPROM")
PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_UNKNOWN ) PORT_READ_LINE_DEVICE_MEMBER("eeprom", eeprom_serial_er5911_device, do_read)
PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_CUSTOM ) PORT_READ_LINE_DEVICE_MEMBER("eeprom", eeprom_serial_er5911_device, do_read)
PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_CUSTOM ) PORT_READ_LINE_DEVICE_MEMBER("eeprom", eeprom_serial_er5911_device, ready_read)
PORT_SERVICE_NO_TOGGLE(0x04, IP_ACTIVE_LOW)
PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_CUSTOM ) PORT_VBLANK("screen") // not really vblank, object related. It's timed, otherwise sprites flicker
PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_CUSTOM ) PORT_READ_LINE_MEMBER(vendetta_state, obj_busy_r)
PORT_BIT( 0xf0, IP_ACTIVE_LOW, IPT_UNUSED )
PORT_START( "EEPROMOUT" )
@ -551,8 +554,15 @@ INPUT_PORTS_END
void vendetta_state::vblank_irq(int state)
{
if (state && m_irq_enabled)
if (state)
{
if (m_irq_enabled)
m_maincpu->set_input_line(KONAMI_IRQ_LINE, ASSERT_LINE);
// OBJ DMA enabled
if (m_k053246->k053246_is_irq_enabled())
m_obj_busy->adjust(attotime::from_usec(250));
}
}
void vendetta_state::machine_start()
@ -561,6 +571,7 @@ void vendetta_state::machine_start()
m_mainbank->set_entry(0);
m_nmi_blocked = timer_alloc(timer_expired_delegate());
m_obj_busy = timer_alloc(timer_expired_delegate());
save_item(NAME(m_irq_enabled));
save_item(NAME(m_sprite_colorbase));