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yamaha mu50: set LEDs and LCD contrast (#12729)

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Felipe Corrêa da Silva Sanches 2024-09-04 17:52:30 -03:00 committed by GitHub
parent 7f855e5993
commit c75493d6ac
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GPG Key ID: B5690EEEBB952194
1 changed files with 18 additions and 2 deletions
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20
src/mame/yamaha/ymmu50.cpp
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@ -90,7 +90,7 @@ private:
required_ioport m_ioport_o2; required_ioport m_ioport_o2;
required_shared_ptr<u16> m_ram; required_shared_ptr<u16> m_ram;
u8 cur_p6, cur_pa, cur_pb, cur_pc; u8 cur_p6, cur_p9, cur_pa, cur_pb, cur_pc;
u16 adc_ar_r(); u16 adc_ar_r();
u16 adc_al_r(); u16 adc_al_r();
@ -99,12 +99,14 @@ private:
void p6_w(u8 data); void p6_w(u8 data);
u8 p6_r(); u8 p6_r();
void p9_w(u8 data);
void pa_w(u8 data); void pa_w(u8 data);
u8 pa_r(); u8 pa_r();
void pb_w(u8 data); void pb_w(u8 data);
u8 pb_r(); u8 pb_r();
void pc_w(u8 data); void pc_w(u8 data);
u8 pc_r(); u8 pc_r();
void update_contrast();
void mu50_map(address_map &map); void mu50_map(address_map &map);
@ -114,7 +116,7 @@ private:
void mu50_state::machine_start() void mu50_state::machine_start()
{ {
cur_p6 = cur_pa = cur_pb = cur_pc = 0xff; cur_p6 = cur_p9 = cur_pa = cur_pb = cur_pc = 0xff;
} }
void mu50_state::machine_reset() void mu50_state::machine_reset()
@ -178,14 +180,27 @@ u8 mu50_state::p6_r()
return cur_p6; return cur_p6;
} }
void mu50_state::p9_w(u8 data)
{
cur_p9 = data;
update_contrast();
}
u8 mu50_state::pb_r() u8 mu50_state::pb_r()
{ {
return cur_pb; return cur_pb;
} }
void mu50_state::update_contrast()
{
m_lcd->set_contrast(((~cur_p9 >> 3) & 0x6) | (BIT(~cur_pb, 1)));
}
void mu50_state::pb_w(u8 data) void mu50_state::pb_w(u8 data)
{ {
cur_pb = data; cur_pb = data;
m_lcd->set_leds((~data >> 2) & 0x1f);
update_contrast();
} }
void mu50_state::pa_w(u8 data) void mu50_state::pa_w(u8 data)
@ -239,6 +254,7 @@ void mu50_state::mu50(machine_config &config)
m_mu50cpu->read_adc<7>().set_constant(0); m_mu50cpu->read_adc<7>().set_constant(0);
m_mu50cpu->read_port6().set(FUNC(mu50_state::p6_r)); m_mu50cpu->read_port6().set(FUNC(mu50_state::p6_r));
m_mu50cpu->write_port6().set(FUNC(mu50_state::p6_w)); m_mu50cpu->write_port6().set(FUNC(mu50_state::p6_w));
m_mu50cpu->write_port9().set(FUNC(mu50_state::p9_w));
m_mu50cpu->read_porta().set(FUNC(mu50_state::pa_r)); m_mu50cpu->read_porta().set(FUNC(mu50_state::pa_r));
m_mu50cpu->write_porta().set(FUNC(mu50_state::pa_w)); m_mu50cpu->write_porta().set(FUNC(mu50_state::pa_w));
m_mu50cpu->read_portb().set(FUNC(mu50_state::pb_r)); m_mu50cpu->read_portb().set(FUNC(mu50_state::pb_r));