diff options
Diffstat (limited to 'src/devices/bus/nes_ctrl/mjpanel.cpp')
-rw-r--r-- | src/devices/bus/nes_ctrl/mjpanel.cpp | 131 |
1 files changed, 131 insertions, 0 deletions
diff --git a/src/devices/bus/nes_ctrl/mjpanel.cpp b/src/devices/bus/nes_ctrl/mjpanel.cpp new file mode 100644 index 00000000000..cb37aeb1c2a --- /dev/null +++ b/src/devices/bus/nes_ctrl/mjpanel.cpp @@ -0,0 +1,131 @@ +// license:BSD-3-Clause +// copyright-holders:Fabio Priuli +/********************************************************************** + + Nintendo Family Computer Mahjong Panel + +**********************************************************************/ + +#include "mjpanel.h" + +//************************************************************************** +// DEVICE DEFINITIONS +//************************************************************************** + +const device_type NES_MJPANEL = &device_creator<nes_mjpanel_device>; + + +static INPUT_PORTS_START( nes_mjpanel ) + PORT_START("MJPANEL.0") + PORT_BIT( 0xff, IP_ACTIVE_HIGH, IPT_UNUSED ) + + PORT_START("MJPANEL.1") + PORT_BIT( 0x03, IP_ACTIVE_HIGH, IPT_UNUSED ) + PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_MAHJONG_N ) + PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_MAHJONG_M ) + PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_MAHJONG_L ) + PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_MAHJONG_K ) + PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_MAHJONG_J ) + PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_MAHJONG_I ) + + PORT_START("MJPANEL.2") + PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_MAHJONG_H ) + PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_MAHJONG_G ) + PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_MAHJONG_F ) + PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_MAHJONG_E ) + PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_MAHJONG_D ) + PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_MAHJONG_C ) + PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_MAHJONG_B ) + PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_MAHJONG_A ) + + PORT_START("MJPANEL.3") + PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_UNUSED ) + PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_MAHJONG_RON ) + PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_MAHJONG_REACH ) + PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_MAHJONG_CHI ) + PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_MAHJONG_PON ) + PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_MAHJONG_KAN ) + PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_SELECT ) PORT_NAME("Mahjong Select") + PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_START ) PORT_NAME("Mahjong Start") +INPUT_PORTS_END + + +//------------------------------------------------- +// input_ports - device-specific input ports +//------------------------------------------------- + +ioport_constructor nes_mjpanel_device::device_input_ports() const +{ + return INPUT_PORTS_NAME( nes_mjpanel ); +} + + + +//************************************************************************** +// LIVE DEVICE +//************************************************************************** + +//------------------------------------------------- +// nes_mjpanel_device - constructor +//------------------------------------------------- + +nes_mjpanel_device::nes_mjpanel_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) : + device_t(mconfig, NES_MJPANEL, "Famicom Mahjong Panel", tag, owner, clock, "nes_mjpanel", __FILE__), + device_nes_control_port_interface(mconfig, *this), + m_panel(*this, "MJPANEL") +{ +} + + +//------------------------------------------------- +// device_start +//------------------------------------------------- + +void nes_mjpanel_device::device_start() +{ + save_item(NAME(m_latch)); +} + + +//------------------------------------------------- +// device_reset +//------------------------------------------------- + +void nes_mjpanel_device::device_reset() +{ + m_latch = 0; +} + + +//------------------------------------------------- +// read +//------------------------------------------------- + +UINT8 nes_mjpanel_device::read_exp(offs_t offset) +{ + UINT8 ret = 0; + if (offset) + { + ret = (m_latch & 1) << 1; + m_latch >>= 1; + } + else + logerror("Error: Mahjong panel read from $4016\n"); + + return ret; +} + +//------------------------------------------------- +// write +//------------------------------------------------- + +void nes_mjpanel_device::write(UINT8 data) +{ + if (data & 0x01) + return; + + if (data & 0xf8) + logerror("Error: Mahjong panel read with mux data %02x\n", (data & 0xfe)); + else + m_latch = m_panel[(data & 0xfe) >> 1]->read(); +} |