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// license:BSD-3-Clause
// copyright-holders:Curt Coder
/**********************************************************************
Coleco Adam Internal 64KB RAM Expansion emulation
Copyright MESS Team.
Visit http://mamedev.org for licensing and usage restrictions.
**********************************************************************/
#include "adam_ram.h"
//**************************************************************************
// DEVICE DEFINITIONS
//**************************************************************************
const device_type ADAM_RAM = &device_creator<adam_ram_expansion_device>;
//**************************************************************************
// LIVE DEVICE
//**************************************************************************
//-------------------------------------------------
// adam_ram_expansion_device - constructor
//-------------------------------------------------
adam_ram_expansion_device::adam_ram_expansion_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock)
: device_t(mconfig, ADAM_RAM, "Adam 64KB RAM expansion", tag, owner, clock, "adam_ram", __FILE__),
device_adam_expansion_slot_card_interface(mconfig, *this)
{
}
//-------------------------------------------------
// device_start - device-specific startup
//-------------------------------------------------
void adam_ram_expansion_device::device_start()
{
adam_ram_pointer(machine(), 64 * 1024);
}
//-------------------------------------------------
// adam_bd_r - buffered data read
//-------------------------------------------------
UINT8 adam_ram_expansion_device::adam_bd_r(address_space &space, offs_t offset, UINT8 data, int bmreq, int biorq, int aux_rom_cs, int cas1, int cas2)
{
if (!cas2)
{
data = m_ram[offset];
}
return data;
}
//-------------------------------------------------
// adam_bd_w - buffered data write
//-------------------------------------------------
void adam_ram_expansion_device::adam_bd_w(address_space &space, offs_t offset, UINT8 data, int bmreq, int biorq, int aux_rom_cs, int cas1, int cas2)
{
if (!cas2)
{
m_ram[offset] = data;
}
}
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