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// license:BSD-3-Clause
// copyright-holders:Curt Coder
/**********************************************************************

    Atari Portfolio 128KB RAM card emulation

**********************************************************************/

#include "emu.h"
#include "ram.h"



//**************************************************************************
//  DEVICE DEFINITIONS
//**************************************************************************

DEFINE_DEVICE_TYPE(PORTFOLIO_RAM_CARD, portfolio_ram_card_device, "portfolio_ram_card", "Atari Portfolio RAM card")


//**************************************************************************
//  LIVE DEVICE
//**************************************************************************

//-------------------------------------------------
//  portfolio_ram_card_device - constructor
//-------------------------------------------------

portfolio_ram_card_device::portfolio_ram_card_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) :
	device_t(mconfig, PORTFOLIO_RAM_CARD, tag, owner, clock),
	device_portfolio_memory_card_slot_interface(mconfig, *this),
	device_nvram_interface(mconfig, *this)
{
}


//-------------------------------------------------
//  device_start - device-specific startup
//-------------------------------------------------

void portfolio_ram_card_device::device_start()
{
	m_nvram.allocate(0x20000);
}


//-------------------------------------------------
//  nrdi_r - read
//-------------------------------------------------

uint8_t portfolio_ram_card_device::nrdi_r(address_space &space, offs_t offset)
{
	return m_nvram[offset];
}


//-------------------------------------------------
//  nwri_w - write
//-------------------------------------------------

void portfolio_ram_card_device::nwri_w(address_space &space, offs_t offset, uint8_t data)
{
	m_nvram[offset] = data;
}