diff options
Diffstat (limited to 'src/devices/bus/vtech/ioexp/joystick.cpp')
-rw-r--r-- | src/devices/bus/vtech/ioexp/joystick.cpp | 109 |
1 files changed, 109 insertions, 0 deletions
diff --git a/src/devices/bus/vtech/ioexp/joystick.cpp b/src/devices/bus/vtech/ioexp/joystick.cpp new file mode 100644 index 00000000000..38e9732d17a --- /dev/null +++ b/src/devices/bus/vtech/ioexp/joystick.cpp @@ -0,0 +1,109 @@ +// license:GPL-2.0+ +// copyright-holders:Dirk Best +/*************************************************************************** + + VTech Laser/VZ Joystick Interface + + VTech Laser JS 20 + Dick Smith Electronics X-7315 + +***************************************************************************/ + +#include "joystick.h" + + +//************************************************************************** +// DEVICE DEFINITIONS +//************************************************************************** + +const device_type JOYSTICK_INTERFACE = &device_creator<joystick_interface_device>; + +//------------------------------------------------- +// input_ports - device-specific input ports +//------------------------------------------------- + +static INPUT_PORTS_START( joystick ) + PORT_START("joystick_0") + PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_UP) PORT_PLAYER(1) + PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN) PORT_PLAYER(1) + PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT) PORT_PLAYER(1) + PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT) PORT_PLAYER(1) + PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_BUTTON1) PORT_PLAYER(1) + PORT_BIT(0xe0, IP_ACTIVE_LOW, IPT_UNUSED) + + PORT_START("joystick_0_arm") + PORT_BIT(0x0f, IP_ACTIVE_LOW, IPT_UNUSED) + PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_BUTTON2) PORT_PLAYER(1) + PORT_BIT(0xe0, IP_ACTIVE_LOW, IPT_UNUSED) + + PORT_START("joystick_1") + PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_UP) PORT_PLAYER(2) + PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN) PORT_PLAYER(2) + PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT) PORT_PLAYER(2) + PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT) PORT_PLAYER(2) + PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_BUTTON1) PORT_PLAYER(2) + PORT_BIT(0xe0, IP_ACTIVE_LOW, IPT_UNUSED) + + PORT_START("joystick_1_arm") + PORT_BIT(0x0f, IP_ACTIVE_LOW, IPT_UNUSED) + PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_BUTTON2) PORT_PLAYER(2) + PORT_BIT(0xe0, IP_ACTIVE_LOW, IPT_UNUSED) +INPUT_PORTS_END + +ioport_constructor joystick_interface_device::device_input_ports() const +{ + return INPUT_PORTS_NAME( joystick ); +} + + +//************************************************************************** +// LIVE DEVICE +//************************************************************************** + +//------------------------------------------------- +// joystick_interface_device - constructor +//------------------------------------------------- + +joystick_interface_device::joystick_interface_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) : + device_t(mconfig, JOYSTICK_INTERFACE, "Laser/VZ Joystick Interface", tag, owner, clock, "joystick", __FILE__), + device_ioexp_interface(mconfig, *this), + m_joy0(*this, "joystick_0"), + m_joy0_arm(*this, "joystick_0_arm"), + m_joy1(*this, "joystick_1"), + m_joy1_arm(*this, "joystick_1_arm") +{ +} + +//------------------------------------------------- +// device_start - device-specific startup +//------------------------------------------------- + +void joystick_interface_device::device_start() +{ +} + +//------------------------------------------------- +// device_reset - device-specific reset +//------------------------------------------------- + +void joystick_interface_device::device_reset() +{ + m_slot->m_io->install_read_handler(0x20, 0x2f, read8_delegate(FUNC(joystick_interface_device::joystick_r), this)); +} + + +//************************************************************************** +// IMPLEMENTATION +//************************************************************************** + +READ8_MEMBER( joystick_interface_device::joystick_r ) +{ + UINT8 data = 0xff; + + if (!BIT(offset, 0)) data &= m_joy0->read(); + if (!BIT(offset, 1)) data &= m_joy0_arm->read(); + if (!BIT(offset, 2)) data &= m_joy1->read(); + if (!BIT(offset, 3)) data &= m_joy1_arm->read(); + + return data; +} |