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// license:BSD-3-Clause
// copyright-holders:Curt Coder
/**********************************************************************
RCA Cosmac VIP Byte Input/Output port emulation
Copyright MESS Team.
Visit http://mamedev.org for licensing and usage restrictions.
**********************************************************************/
#include "byteio.h"
//**************************************************************************
// GLOBAL VARIABLES
//**************************************************************************
const device_type VIP_BYTEIO_PORT = &device_creator<vip_byteio_port_device>;
//**************************************************************************
// CARD INTERFACE
//**************************************************************************
//-------------------------------------------------
// device_vip_byteio_port_interface - constructor
//-------------------------------------------------
device_vip_byteio_port_interface::device_vip_byteio_port_interface(const machine_config &mconfig, device_t &device)
: device_slot_card_interface(mconfig,device)
{
m_slot = dynamic_cast<vip_byteio_port_device *>(device.owner());
}
//**************************************************************************
// LIVE DEVICE
//**************************************************************************
//-------------------------------------------------
// vip_byteio_port_device - constructor
//-------------------------------------------------
vip_byteio_port_device::vip_byteio_port_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) :
device_t(mconfig, VIP_BYTEIO_PORT, "VIP byte I/O port", tag, owner, clock, "vip_byteio_port", __FILE__),
device_slot_interface(mconfig, *this),
m_write_inst(*this)
{
}
//-------------------------------------------------
// device_start - device-specific startup
//-------------------------------------------------
void vip_byteio_port_device::device_start()
{
m_cart = dynamic_cast<device_vip_byteio_port_interface *>(get_card_device());
// resolve callbacks
m_write_inst.resolve_safe();
}
//-------------------------------------------------
// device_reset - device-specific reset
//-------------------------------------------------
void vip_byteio_port_device::device_reset()
{
}
UINT8 vip_byteio_port_device::in_r() { UINT8 data = 0xff; if (m_cart != NULL) data = m_cart->vip_in_r(); return data; }
void vip_byteio_port_device::out_w(UINT8 data) { if (m_cart != NULL) m_cart->vip_out_w(data); }
READ_LINE_MEMBER( vip_byteio_port_device::ef3_r ) { int state = CLEAR_LINE; if (m_cart != NULL) state = m_cart->vip_ef3_r(); return state; }
READ_LINE_MEMBER( vip_byteio_port_device::ef4_r ) { int state = CLEAR_LINE; if (m_cart != NULL) state = m_cart->vip_ef4_r(); return state; }
WRITE_LINE_MEMBER( vip_byteio_port_device::q_w ) { if (m_cart != NULL) m_cart->vip_q_w(state); }
//-------------------------------------------------
// SLOT_INTERFACE( vip_byteio_cards )
//-------------------------------------------------
SLOT_INTERFACE_START( vip_byteio_cards )
//SLOT_INTERFACE("exp2", VP576_BYTEIO)
SLOT_INTERFACE("ascii", VP620)
SLOT_INTERFACE_END
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