mirror of
https://github.com/holub/mame
synced 2025-05-30 17:41:47 +03:00
141 lines
3.7 KiB
C
141 lines
3.7 KiB
C
/**********************************************************************
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Atari Video Computer System keypad emulation
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Copyright MESS Team.
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Visit http://mamedev.org for licensing and usage restrictions.
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**********************************************************************/
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#include "vcs_keypad.h"
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//**************************************************************************
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// DEVICE DEFINITIONS
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//**************************************************************************
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const device_type VCS_KEYPAD = &device_creator<vcs_keypad_device>;
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static INPUT_PORTS_START( vcs_keypad )
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PORT_START("KEYPAD")
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PORT_BIT( 0x0001, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_NAME("keypad 1") PORT_CODE(KEYCODE_7_PAD)
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PORT_BIT( 0x0002, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_NAME("keypad 2") PORT_CODE(KEYCODE_8_PAD)
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PORT_BIT( 0x0004, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_NAME("keypad 3") PORT_CODE(KEYCODE_9_PAD)
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PORT_BIT( 0x0008, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_NAME("keypad 4") PORT_CODE(KEYCODE_4_PAD)
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PORT_BIT( 0x0010, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_NAME("keypad 5") PORT_CODE(KEYCODE_5_PAD)
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PORT_BIT( 0x0020, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_NAME("keypad 6") PORT_CODE(KEYCODE_6_PAD)
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PORT_BIT( 0x0040, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_NAME("keypad 7") PORT_CODE(KEYCODE_1_PAD)
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PORT_BIT( 0x0080, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_NAME("keypad 8") PORT_CODE(KEYCODE_2_PAD)
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PORT_BIT( 0x0100, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_NAME("keypad 9") PORT_CODE(KEYCODE_3_PAD)
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PORT_BIT( 0x0200, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_NAME("keypad *") PORT_CODE(KEYCODE_0_PAD)
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PORT_BIT( 0x0400, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_NAME("keypad 0") PORT_CODE(KEYCODE_DEL_PAD)
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PORT_BIT( 0x0800, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_NAME("keypad #") PORT_CODE(KEYCODE_ENTER_PAD)
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INPUT_PORTS_END
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//-------------------------------------------------
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// input_ports - device-specific input ports
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//-------------------------------------------------
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ioport_constructor vcs_keypad_device::device_input_ports() const
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{
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return INPUT_PORTS_NAME( vcs_keypad );
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}
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//**************************************************************************
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// LIVE DEVICE
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//**************************************************************************
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//-------------------------------------------------
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// vcs_keypad_device - constructor
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//-------------------------------------------------
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vcs_keypad_device::vcs_keypad_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) :
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device_t(mconfig, VCS_KEYPAD, "Keypad", tag, owner, clock, "vcs_keypad", __FILE__),
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device_vcs_control_port_interface(mconfig, *this),
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m_keypad(*this, "KEYPAD")
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{
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}
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//-------------------------------------------------
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// device_start - device-specific startup
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//-------------------------------------------------
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void vcs_keypad_device::device_start()
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{
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m_column = 0;
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save_item(NAME(m_column));
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}
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//-------------------------------------------------
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// vcs_joy_w - joystick write
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//-------------------------------------------------
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UINT8 vcs_keypad_device::vcs_joy_r()
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{
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for ( int i = 0; i < 4; i++ )
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{
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if ( ! ( ( m_column >> i ) & 0x01 ) )
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{
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if ( ( m_keypad->read() >> 3*i ) & 0x04 )
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{
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return 0xff;
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}
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else
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{
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return 0;
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}
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}
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}
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return 0xff;
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}
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void vcs_keypad_device::vcs_joy_w( UINT8 data )
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{
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m_column = data & 0x0F;
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}
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UINT8 vcs_keypad_device::vcs_pot_x_r()
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{
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for ( int i = 0; i < 4; i++ )
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{
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if ( ! ( ( m_column >> i ) & 0x01 ) )
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{
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if ( ( m_keypad->read() >> 3*i ) & 0x01 )
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{
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return 0;
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}
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else
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{
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return 0xff;
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}
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}
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}
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return 0;
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}
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UINT8 vcs_keypad_device::vcs_pot_y_r()
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{
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for ( int i = 0; i < 4; i++ )
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{
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if ( ! ( ( m_column >> i ) & 0x01 ) )
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{
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if ( ( m_keypad->read() >> 3*i ) & 0x02 )
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{
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return 0;
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}
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else
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{
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return 0xff;
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}
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}
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}
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return 0;
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}
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