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https://github.com/holub/mame
synced 2025-05-28 16:43:04 +03:00
yamaha mu50: set LEDs and LCD contrast (#12729)
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@ -90,7 +90,7 @@ private:
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required_ioport m_ioport_o2;
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required_shared_ptr<u16> m_ram;
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u8 cur_p6, cur_pa, cur_pb, cur_pc;
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u8 cur_p6, cur_p9, cur_pa, cur_pb, cur_pc;
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u16 adc_ar_r();
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u16 adc_al_r();
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@ -99,12 +99,14 @@ private:
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void p6_w(u8 data);
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u8 p6_r();
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void p9_w(u8 data);
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void pa_w(u8 data);
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u8 pa_r();
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void pb_w(u8 data);
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u8 pb_r();
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void pc_w(u8 data);
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u8 pc_r();
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void update_contrast();
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void mu50_map(address_map &map);
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@ -114,7 +116,7 @@ private:
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void mu50_state::machine_start()
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{
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cur_p6 = cur_pa = cur_pb = cur_pc = 0xff;
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cur_p6 = cur_p9 = cur_pa = cur_pb = cur_pc = 0xff;
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}
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void mu50_state::machine_reset()
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@ -178,14 +180,27 @@ u8 mu50_state::p6_r()
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return cur_p6;
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}
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void mu50_state::p9_w(u8 data)
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{
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cur_p9 = data;
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update_contrast();
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}
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u8 mu50_state::pb_r()
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{
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return cur_pb;
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}
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void mu50_state::update_contrast()
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{
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m_lcd->set_contrast(((~cur_p9 >> 3) & 0x6) | (BIT(~cur_pb, 1)));
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}
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void mu50_state::pb_w(u8 data)
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{
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cur_pb = data;
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m_lcd->set_leds((~data >> 2) & 0x1f);
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update_contrast();
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}
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void mu50_state::pa_w(u8 data)
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@ -239,6 +254,7 @@ void mu50_state::mu50(machine_config &config)
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m_mu50cpu->read_adc<7>().set_constant(0);
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m_mu50cpu->read_port6().set(FUNC(mu50_state::p6_r));
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m_mu50cpu->write_port6().set(FUNC(mu50_state::p6_w));
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m_mu50cpu->write_port9().set(FUNC(mu50_state::p9_w));
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m_mu50cpu->read_porta().set(FUNC(mu50_state::pa_r));
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m_mu50cpu->write_porta().set(FUNC(mu50_state::pa_w));
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m_mu50cpu->read_portb().set(FUNC(mu50_state::pb_r));
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