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/**********************************************************************
Commodore VIC-20 User Port emulation
Copyright MESS Team.
Visit http://mamedev.org for licensing and usage restrictions.
**********************************************************************/
#include "machine/vic20user.h"
//**************************************************************************
// GLOBAL VARIABLES
//**************************************************************************
const device_type VIC20_USER_PORT = &device_creator<vic20_user_port_device>;
//**************************************************************************
// CARD INTERFACE
//**************************************************************************
//-------------------------------------------------
// device_vic20_user_port_interface - constructor
//-------------------------------------------------
device_vic20_user_port_interface::device_vic20_user_port_interface(const machine_config &mconfig, device_t &device)
: device_slot_card_interface(mconfig,device)
{
m_slot = dynamic_cast<vic20_user_port_device *>(device.owner());
}
//-------------------------------------------------
// ~device_vic20_user_port_interface - destructor
//-------------------------------------------------
device_vic20_user_port_interface::~device_vic20_user_port_interface()
{
}
//**************************************************************************
// LIVE DEVICE
//**************************************************************************
//-------------------------------------------------
// vic20_user_port_device - constructor
//-------------------------------------------------
vic20_user_port_device::vic20_user_port_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) :
device_t(mconfig, VIC20_USER_PORT, "VIC-20 user port", tag, owner, clock),
device_slot_interface(mconfig, *this)
{
}
//-------------------------------------------------
// device_config_complete - perform any
// operations now that the configuration is
// complete
//-------------------------------------------------
void vic20_user_port_device::device_config_complete()
{
// inherit a copy of the static data
const vic20_user_port_interface *intf = reinterpret_cast<const vic20_user_port_interface *>(static_config());
if (intf != NULL)
{
*static_cast<vic20_user_port_interface *>(this) = *intf;
}
// or initialize to defaults if none provided
else
{
memset(&m_out_cb1_cb, 0, sizeof(m_out_cb1_cb));
memset(&m_out_cb2_cb, 0, sizeof(m_out_cb2_cb));
memset(&m_out_reset_cb, 0, sizeof(m_out_reset_cb));
}
}
//-------------------------------------------------
// device_start - device-specific startup
//-------------------------------------------------
void vic20_user_port_device::device_start()
{
m_card = dynamic_cast<device_vic20_user_port_interface *>(get_card_device());
// resolve callbacks
m_out_light_pen_func.resolve(m_out_light_pen_cb, *this);
m_out_cb1_func.resolve(m_out_cb1_cb, *this);
m_out_cb2_func.resolve(m_out_cb2_cb, *this);
m_out_reset_func.resolve(m_out_reset_cb, *this);
}
//-------------------------------------------------
// device_reset - device-specific reset
//-------------------------------------------------
void vic20_user_port_device::device_reset()
{
if (get_card_device())
{
get_card_device()->reset();
}
}
READ8_MEMBER( vic20_user_port_device::pb_r ) { UINT8 data = 0xff; if (m_card != NULL) data = m_card->vic20_pb_r(space, offset); return data; }
WRITE8_MEMBER( vic20_user_port_device::pb_w ) { if (m_card != NULL) m_card->vic20_pb_w(space, offset, data); }
READ_LINE_MEMBER( vic20_user_port_device::joy0_r ) { int state = 1; if (m_card != NULL) state = m_card->vic20_joy0_r(); return state; }
READ_LINE_MEMBER( vic20_user_port_device::joy1_r ) { int state = 1; if (m_card != NULL) state = m_card->vic20_joy1_r(); return state; }
READ_LINE_MEMBER( vic20_user_port_device::joy2_r ) { int state = 1; if (m_card != NULL) state = m_card->vic20_joy2_r(); return state; }
READ_LINE_MEMBER( vic20_user_port_device::light_pen_r ) { int state = 1; if (m_card != NULL) state = m_card->vic20_light_pen_r(); return state; }
READ_LINE_MEMBER( vic20_user_port_device::cassette_switch_r ) { int state = 1; if (m_card != NULL) state = m_card->vic20_cassette_switch_r(); return state; }
WRITE_LINE_MEMBER( vic20_user_port_device::cb1_w ) { if (m_card != NULL) m_card->vic20_cb1_w(state); }
WRITE_LINE_MEMBER( vic20_user_port_device::cb2_w ) { if (m_card != NULL) m_card->vic20_cb2_w(state); }
WRITE_LINE_MEMBER( vic20_user_port_device::atn_w ) { if (m_card != NULL) m_card->vic20_atn_w(state); }
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