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// license:BSD-3-Clause
// copyright-holders:Curt Coder
/**********************************************************************
MOS Technology 6529 Single Port Interface Adapter emulation
**********************************************************************/
#include "mos6529.h"
//**************************************************************************
// MACROS / CONSTANTS
//**************************************************************************
#define LOG 0
//**************************************************************************
// DEVICE DEFINITIONS
//**************************************************************************
// device type definition
const device_type MOS6529 = &device_creator<mos6529_device>;
//**************************************************************************
// LIVE DEVICE
//**************************************************************************
//-------------------------------------------------
// mos6529_device - constructor
//-------------------------------------------------
mos6529_device::mos6529_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock)
: device_t(mconfig, MOS6529, "MOS6529", tag, owner, clock, "mos6529", __FILE__),
m_input(0),
m_p0_handler(*this),
m_p1_handler(*this),
m_p2_handler(*this),
m_p3_handler(*this),
m_p4_handler(*this),
m_p5_handler(*this),
m_p6_handler(*this),
m_p7_handler(*this)
{
}
//-------------------------------------------------
// device_start - device-specific startup
//-------------------------------------------------
void mos6529_device::device_start()
{
// resolve callbacks
m_p0_handler.resolve_safe();
m_p1_handler.resolve_safe();
m_p2_handler.resolve_safe();
m_p3_handler.resolve_safe();
m_p4_handler.resolve_safe();
m_p5_handler.resolve_safe();
m_p6_handler.resolve_safe();
m_p7_handler.resolve_safe();
}
//-------------------------------------------------
// read -
//-------------------------------------------------
READ8_MEMBER( mos6529_device::read )
{
return m_input;
}
//-------------------------------------------------
// write -
//-------------------------------------------------
WRITE8_MEMBER( mos6529_device::write )
{
m_p0_handler((data>>0)&1);
m_p1_handler((data>>1)&1);
m_p2_handler((data>>2)&1);
m_p3_handler((data>>3)&1);
m_p4_handler((data>>4)&1);
m_p5_handler((data>>5)&1);
m_p6_handler((data>>6)&1);
m_p7_handler((data>>7)&1);
}
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