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// license:BSD-3-Clause
// copyright-holders:Nigel Barnes
/**********************************************************************
Acorn Electron Tube Interface
**********************************************************************/
#include "emu.h"
#include "tube.h"
//**************************************************************************
// DEVICE DEFINITIONS
//**************************************************************************
DEFINE_DEVICE_TYPE(ELECTRON_TUBE, electron_tube_device, "electron_tube", "Acorn Electron Tube Interface")
//-------------------------------------------------
// device_add_mconfig - add device configuration
//-------------------------------------------------
void electron_tube_device::device_add_mconfig(machine_config &config)
{
/* tube port */
BBC_TUBE_SLOT(config, m_tube, electron_tube_devices, nullptr);
m_tube->irq_handler().set(DEVICE_SELF_OWNER, FUNC(electron_cartslot_device::irq_w));
}
//**************************************************************************
// LIVE DEVICE
//**************************************************************************
//-------------------------------------------------
// electron_tube_device - constructor
//-------------------------------------------------
electron_tube_device::electron_tube_device(const machine_config &mconfig, const char *tag, device_t *owner, const XTAL &clock)
: device_t(mconfig, ELECTRON_TUBE, tag, owner, clock)
, device_electron_cart_interface(mconfig, *this)
, m_tube(*this, "tube")
{
}
//-------------------------------------------------
// device_start - device-specific startup
//-------------------------------------------------
void electron_tube_device::device_start()
{
}
//-------------------------------------------------
// read - cartridge data read
//-------------------------------------------------
uint8_t electron_tube_device::read(offs_t offset, int infc, int infd, int romqa, int oe, int oe2)
{
uint8_t data = 0xff;
if (infc)
{
if (offset >= 0xe0 && offset < 0xf0)
{
data = m_tube->host_r(offset & 0x0f);
}
}
else if (oe2)
{
data = m_rom[offset & 0x1fff];
}
return data;
}
//-------------------------------------------------
// write - cartridge data write
//-------------------------------------------------
void electron_tube_device::write(offs_t offset, uint8_t data, int infc, int infd, int romqa, int oe, int oe2)
{
if (infc)
{
if (offset >= 0xe0 && offset < 0xf0)
{
m_tube->host_w(offset & 0x0f, data);
}
}
}
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