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-rw-r--r--src/devices/bus/tvc/tvc.c167
1 files changed, 167 insertions, 0 deletions
diff --git a/src/devices/bus/tvc/tvc.c b/src/devices/bus/tvc/tvc.c
new file mode 100644
index 00000000000..54ea47c9149
--- /dev/null
+++ b/src/devices/bus/tvc/tvc.c
@@ -0,0 +1,167 @@
+// license:BSD-3-Clause
+// copyright-holders:Sandro Ronco
+/*********************************************************************
+
+ tvc.c
+
+*********************************************************************/
+
+#include "emu.h"
+#include "tvc.h"
+#include "emuopts.h"
+
+
+/***************************************************************************
+ PARAMETERS
+***************************************************************************/
+
+//**************************************************************************
+// GLOBAL VARIABLES
+//**************************************************************************
+
+const device_type TVCEXP_SLOT = &device_creator<tvcexp_slot_device>;
+
+
+//**************************************************************************
+// TVC Expansion Interface
+//**************************************************************************
+
+//-------------------------------------------------
+// device_tvcexp_interface - constructor
+//-------------------------------------------------
+
+device_tvcexp_interface::device_tvcexp_interface(const machine_config &mconfig, device_t &device)
+ : device_slot_card_interface(mconfig, device)
+{
+}
+
+
+//-------------------------------------------------
+// ~device_tvcexp_interface - destructor
+//-------------------------------------------------
+
+device_tvcexp_interface::~device_tvcexp_interface()
+{
+}
+
+
+//**************************************************************************
+// LIVE DEVICE
+//**************************************************************************
+
+//-------------------------------------------------
+// tvcexp_slot_device - constructor
+//-------------------------------------------------
+tvcexp_slot_device::tvcexp_slot_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) :
+ device_t(mconfig, TVCEXP_SLOT, "TVC64 Expansion Slot", tag, owner, clock, "tvcexp_slot", __FILE__),
+ device_slot_interface(mconfig, *this),
+ m_out_irq_cb(*this),
+ m_out_nmi_cb(*this)
+{
+}
+
+//-------------------------------------------------
+// tvcexp_slot_device - destructor
+//-------------------------------------------------
+
+tvcexp_slot_device::~tvcexp_slot_device()
+{
+}
+
+//-------------------------------------------------
+// device_start - device-specific startup
+//-------------------------------------------------
+
+void tvcexp_slot_device::device_start()
+{
+ m_cart = dynamic_cast<device_tvcexp_interface *>(get_card_device());
+
+ // resolve callbacks
+ m_out_irq_cb.resolve_safe();
+ m_out_nmi_cb.resolve_safe();
+}
+
+/*-------------------------------------------------
+ module id read
+-------------------------------------------------*/
+
+UINT8 tvcexp_slot_device::id_r()
+{
+ UINT8 result = 0x00;
+
+ if (m_cart)
+ result = m_cart->id_r() & 0x03;
+
+ return result;
+}
+
+/*-------------------------------------------------
+ module interrupt ack
+-------------------------------------------------*/
+
+void tvcexp_slot_device::int_ack()
+{
+ if (m_cart)
+ m_cart->int_ack();
+}
+
+/*-------------------------------------------------
+ module int read
+-------------------------------------------------*/
+
+UINT8 tvcexp_slot_device::int_r()
+{
+ UINT8 result = 1;
+
+ if (m_cart)
+ result = m_cart->int_r() & 0x01;
+
+ return result;
+}
+
+
+/*-------------------------------------------------
+ read
+-------------------------------------------------*/
+
+READ8_MEMBER(tvcexp_slot_device::read)
+{
+ if (m_cart)
+ return m_cart->read(space, offset);
+ else
+ return 0x00;
+}
+
+
+/*-------------------------------------------------
+ write
+-------------------------------------------------*/
+
+WRITE8_MEMBER(tvcexp_slot_device::write)
+{
+ if (m_cart)
+ m_cart->write(space, offset, data);
+}
+
+/*-------------------------------------------------
+ IO read
+-------------------------------------------------*/
+
+READ8_MEMBER(tvcexp_slot_device::io_read)
+{
+ if (m_cart)
+ return m_cart->io_read(space, offset);
+ else
+ return 0x00;
+}
+
+
+/*-------------------------------------------------
+ IO write
+-------------------------------------------------*/
+
+WRITE8_MEMBER(tvcexp_slot_device::io_write)
+{
+ if (m_cart)
+ m_cart->io_write(space, offset, data);
+}