diff options
Diffstat (limited to 'src/devices/bus/nes_ctrl/konamihs.cpp')
-rw-r--r-- | src/devices/bus/nes_ctrl/konamihs.cpp | 52 |
1 files changed, 17 insertions, 35 deletions
diff --git a/src/devices/bus/nes_ctrl/konamihs.cpp b/src/devices/bus/nes_ctrl/konamihs.cpp index 9522f5e3c2b..d8d95c9bbd6 100644 --- a/src/devices/bus/nes_ctrl/konamihs.cpp +++ b/src/devices/bus/nes_ctrl/konamihs.cpp @@ -18,12 +18,12 @@ DEFINE_DEVICE_TYPE(NES_KONAMIHS, nes_konamihs_device, "nes_konamihs", "Konami Hy static INPUT_PORTS_START( nes_konamihs ) PORT_START("P1") - PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_BUTTON2 ) PORT_NAME("PI Run") - PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_BUTTON1 ) PORT_NAME("PI Jump") + PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_BUTTON2 ) PORT_NAME("I Run") + PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_BUTTON1 ) PORT_NAME("I Jump") PORT_START("P2") - PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_BUTTON2 ) PORT_NAME("PII Run") - PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_BUTTON1 ) PORT_NAME("PII Jump") + PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_BUTTON4 ) PORT_NAME("II Run") + PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_BUTTON3 ) PORT_NAME("II Jump") INPUT_PORTS_END //------------------------------------------------- @@ -43,13 +43,11 @@ ioport_constructor nes_konamihs_device::device_input_ports() const // nes_konamihs_device - constructor //------------------------------------------------- -nes_konamihs_device::nes_konamihs_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) : - device_t(mconfig, NES_KONAMIHS, tag, owner, clock), - device_nes_control_port_interface(mconfig, *this), - m_ipt_p1(*this, "P1"), - m_ipt_p2(*this, "P2"), - m_latch_p1(0), - m_latch_p2(0) +nes_konamihs_device::nes_konamihs_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock) + : device_t(mconfig, NES_KONAMIHS, tag, owner, clock) + , device_nes_control_port_interface(mconfig, *this) + , m_ipt(*this, "P%u", 1) + , m_latch(0) { } @@ -60,19 +58,7 @@ nes_konamihs_device::nes_konamihs_device(const machine_config &mconfig, const ch void nes_konamihs_device::device_start() { - save_item(NAME(m_latch_p1)); - save_item(NAME(m_latch_p2)); -} - - -//------------------------------------------------- -// device_reset -//------------------------------------------------- - -void nes_konamihs_device::device_reset() -{ - m_latch_p1 = 0; - m_latch_p2 = 0; + save_item(NAME(m_latch)); } @@ -80,14 +66,13 @@ void nes_konamihs_device::device_reset() // read //------------------------------------------------- -uint8_t nes_konamihs_device::read_exp(offs_t offset) +u8 nes_konamihs_device::read_exp(offs_t offset) { - uint8_t ret = 0; + u8 ret = 0; if (offset == 1) //$4017 - { - ret |= m_latch_p1 << 1; - ret |= m_latch_p2 << 3; - } + for (int i = 0; i < 2; i++) + if (BIT(m_latch, i)) + ret |= m_ipt[i]->read() << (2 * i + 1); return ret; } @@ -95,10 +80,7 @@ uint8_t nes_konamihs_device::read_exp(offs_t offset) // write //------------------------------------------------- -void nes_konamihs_device::write(uint8_t data) +void nes_konamihs_device::write(u8 data) { - if ((data & 0x02) == 0) - m_latch_p1 = m_ipt_p1->read(); - if ((data & 0x04) == 0) - m_latch_p2 = m_ipt_p2->read(); + m_latch = ~data >> 1; } |