diff options
Diffstat (limited to 'src/mame/drivers/cxgz80.cpp')
-rw-r--r-- | src/mame/drivers/cxgz80.cpp | 15 |
1 files changed, 5 insertions, 10 deletions
diff --git a/src/mame/drivers/cxgz80.cpp b/src/mame/drivers/cxgz80.cpp index 64bfddffba4..8366a859fa2 100644 --- a/src/mame/drivers/cxgz80.cpp +++ b/src/mame/drivers/cxgz80.cpp @@ -42,7 +42,7 @@ public: m_maincpu(*this, "maincpu"), m_irq_on(*this, "irq_on"), m_dac(*this, "dac"), - m_speaker_off_timer(*this, "speaker_off"), + m_speaker_off(*this, "speaker_off"), m_inp_matrix(*this, "IN.%u", 0), m_out_x(*this, "%u.%u", 0U, 0U), m_out_a(*this, "%u.a", 0U), @@ -56,7 +56,7 @@ public: required_device<cpu_device> m_maincpu; required_device<timer_device> m_irq_on; required_device<dac_bit_interface> m_dac; - required_device<timer_device> m_speaker_off_timer; + required_device<timer_device> m_speaker_off; optional_ioport_array<10> m_inp_matrix; // max 10 output_finder<0x20, 0x20> m_out_x; output_finder<0x20> m_out_a; @@ -87,7 +87,7 @@ public: void display_matrix(int maxx, int maxy, u32 setx, u32 sety, bool update = true); // Chess 2001 - TIMER_DEVICE_CALLBACK_MEMBER(speaker_off_callback); + TIMER_DEVICE_CALLBACK_MEMBER(speaker_off) { m_dac->write(0); } DECLARE_WRITE8_MEMBER(ch2001_speaker_on_w); DECLARE_WRITE8_MEMBER(ch2001_leds_w); DECLARE_READ8_MEMBER(ch2001_input_r); @@ -231,16 +231,11 @@ u16 cxgz80_state::read_inputs(int columns) // TTL -TIMER_DEVICE_CALLBACK_MEMBER(cxgz80_state::speaker_off_callback) -{ - m_dac->write(0); -} - WRITE8_MEMBER(cxgz80_state::ch2001_speaker_on_w) { // 74ls109 clock pulse to speaker m_dac->write(1); - m_speaker_off_timer->adjust(attotime::from_usec(200)); // not accurate + m_speaker_off->adjust(attotime::from_usec(200)); // not accurate } WRITE8_MEMBER(cxgz80_state::ch2001_leds_w) @@ -408,7 +403,7 @@ void cxgz80_state::ch2001(machine_config &config) m_irq_on->set_start_delay(irq_period - attotime::from_nsec(18300)); // active for 18.3us TIMER(config, "irq_off").configure_periodic(FUNC(cxgz80_state::irq_off<INPUT_LINE_IRQ0>), irq_period); - TIMER(config, m_speaker_off_timer).configure_generic(FUNC(cxgz80_state::speaker_off_callback)); + TIMER(config, m_speaker_off).configure_generic(FUNC(cxgz80_state::speaker_off)); TIMER(config, "display_decay").configure_periodic(FUNC(cxgz80_state::display_decay_tick), attotime::from_msec(1)); config.set_default_layout(layout_cxg_ch2001); |