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author | 2015-11-08 12:56:12 +0100 | |
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committer | 2015-11-08 12:56:12 +0100 | |
commit | 7c19aac60e12d6f5ea301bdb34d7826a01e0b06f (patch) | |
tree | f310d86aa2c6bfc19d115307dedde4eb0cd52dad /src/devices/bus/vcs_ctrl/wheel.cpp | |
parent | a57b46ae933badd7441ce1644711dbb851e2b504 (diff) |
Rename *.c -> *.cpp in our source (nw)
Diffstat (limited to 'src/devices/bus/vcs_ctrl/wheel.cpp')
-rw-r--r-- | src/devices/bus/vcs_ctrl/wheel.cpp | 76 |
1 files changed, 76 insertions, 0 deletions
diff --git a/src/devices/bus/vcs_ctrl/wheel.cpp b/src/devices/bus/vcs_ctrl/wheel.cpp new file mode 100644 index 00000000000..9d1f3009596 --- /dev/null +++ b/src/devices/bus/vcs_ctrl/wheel.cpp @@ -0,0 +1,76 @@ +// license:BSD-3-Clause +// copyright-holders:Curt Coder +/********************************************************************** + + Atari Video Computer System Driving Wheel emulation + +**********************************************************************/ + +#include "wheel.h" + + + +//************************************************************************** +// DEVICE DEFINITIONS +//************************************************************************** + +const device_type VCS_WHEEL = &device_creator<vcs_wheel_device>; + + +static INPUT_PORTS_START( vcs_wheel ) + PORT_START("JOY") + PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_BUTTON1 ) // Pin 6 + PORT_BIT( 0xdc, IP_ACTIVE_LOW, IPT_UNUSED ) + + PORT_START("WHEEL") + PORT_BIT( 0xff, 0x00, IPT_TRACKBALL_X ) PORT_SENSITIVITY(40) PORT_KEYDELTA(5) +INPUT_PORTS_END + + +//------------------------------------------------- +// input_ports - device-specific input ports +//------------------------------------------------- + +ioport_constructor vcs_wheel_device::device_input_ports() const +{ + return INPUT_PORTS_NAME( vcs_wheel ); +} + + + +//************************************************************************** +// LIVE DEVICE +//************************************************************************** + +//------------------------------------------------- +// vcs_wheel_device - constructor +//------------------------------------------------- + +vcs_wheel_device::vcs_wheel_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) : + device_t(mconfig, VCS_WHEEL, "Atari / CBM Driving Wheel", tag, owner, clock, "vcs_wheel", __FILE__), + device_vcs_control_port_interface(mconfig, *this), + m_joy(*this, "JOY"), + m_wheel(*this, "WHEEL") +{ +} + + +//------------------------------------------------- +// device_start - device-specific startup +//------------------------------------------------- + +void vcs_wheel_device::device_start() +{ +} + + +//------------------------------------------------- +// vcs_joy_r - joystick read +//------------------------------------------------- + +UINT8 vcs_wheel_device::vcs_joy_r() +{ + static const UINT8 driving_lookup[4] = { 0x00, 0x02, 0x03, 0x01 }; + + return m_joy->read() | driving_lookup[ ( m_wheel->read() & 0x18 ) >> 3 ]; +} |