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// license:BSD-3-Clause
// copyright-holders:Curt Coder
/**********************************************************************
Commodore VIC-10 Standard 8K/16K ROM Cartridge emulation
**********************************************************************/
#include "emu.h"
#include "std.h"
//**************************************************************************
// DEVICE DEFINITIONS
//**************************************************************************
DEFINE_DEVICE_TYPE(VIC10_STD, vic10_standard_cartridge_device, "vic10_standard", "VIC-10 Standard Cartridge")
//**************************************************************************
// LIVE DEVICE
//**************************************************************************
//-------------------------------------------------
// vic10_standard_cartridge_device - constructor
//-------------------------------------------------
vic10_standard_cartridge_device::vic10_standard_cartridge_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock)
: device_t(mconfig, VIC10_STD, tag, owner, clock), device_vic10_expansion_card_interface(mconfig, *this)
{
}
//-------------------------------------------------
// device_start - device-specific startup
//-------------------------------------------------
void vic10_standard_cartridge_device::device_start()
{
}
//-------------------------------------------------
// vic10_cd_r - cartridge data read
//-------------------------------------------------
uint8_t vic10_standard_cartridge_device::vic10_cd_r(offs_t offset, uint8_t data, int lorom, int uprom, int exram)
{
if (!lorom && m_lorom.bytes())
{
data = m_lorom[offset & m_lorom.mask()];
}
else if (!exram && m_exram.bytes())
{
data = m_exram[offset & m_exram.mask()];
}
else if (!uprom && m_uprom.bytes())
{
data = m_uprom[offset & m_uprom.mask()];
}
return data;
}
//-------------------------------------------------
// vic10_cd_w - cartridge data write
//-------------------------------------------------
void vic10_standard_cartridge_device::vic10_cd_w(offs_t offset, uint8_t data, int lorom, int uprom, int exram)
{
if (!exram && m_exram.bytes())
{
m_exram[offset & m_exram.mask()] = data;
}
}
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