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-rw-r--r--src/devices/bus/bbc/modem/modem.cpp101
1 files changed, 101 insertions, 0 deletions
diff --git a/src/devices/bus/bbc/modem/modem.cpp b/src/devices/bus/bbc/modem/modem.cpp
new file mode 100644
index 00000000000..6dfcf4e47f1
--- /dev/null
+++ b/src/devices/bus/bbc/modem/modem.cpp
@@ -0,0 +1,101 @@
+// license:BSD-3-Clause
+// copyright-holders:Nigel Barnes
+/**********************************************************************
+
+ BBC Master Internal Modem port
+
+**********************************************************************/
+
+#include "emu.h"
+#include "modem.h"
+
+
+//**************************************************************************
+// DEVICE DEFINITIONS
+//**************************************************************************
+
+DEFINE_DEVICE_TYPE(BBC_MODEM_SLOT, bbc_modem_slot_device, "bbc_modem_slot", "BBC Master Internal Modem port")
+
+
+
+//**************************************************************************
+// DEVICE BBC_MODEM PORT INTERFACE
+//**************************************************************************
+
+//-------------------------------------------------
+// device_bbc_modem_interface - constructor
+//-------------------------------------------------
+
+device_bbc_modem_interface::device_bbc_modem_interface(const machine_config &mconfig, device_t &device) :
+ device_interface(device, "bbcmodem")
+{
+ m_slot = dynamic_cast<bbc_modem_slot_device *>(device.owner());
+}
+
+
+//**************************************************************************
+// LIVE DEVICE
+//**************************************************************************
+
+//-------------------------------------------------
+// bbc_modem_slot_device - constructor
+//-------------------------------------------------
+
+bbc_modem_slot_device::bbc_modem_slot_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock)
+ : device_t(mconfig, BBC_MODEM_SLOT, tag, owner, clock)
+ , device_single_card_slot_interface<device_bbc_modem_interface>(mconfig, *this)
+ , m_card(nullptr)
+ , m_irq_handler(*this)
+{
+}
+
+
+//-------------------------------------------------
+// device_start - device-specific startup
+//-------------------------------------------------
+
+void bbc_modem_slot_device::device_start()
+{
+ m_card = get_card_device();
+}
+
+
+//-------------------------------------------------
+// read
+//-------------------------------------------------
+
+uint8_t bbc_modem_slot_device::read(offs_t offset)
+{
+ if (m_card)
+ return m_card->read(offset & 0x0f);
+ else
+ return 0xfe;
+}
+
+//-------------------------------------------------
+// write
+//-------------------------------------------------
+
+void bbc_modem_slot_device::write(offs_t offset, uint8_t data)
+{
+ if (m_card)
+ m_card->write(offset & 0x0f, data);
+}
+
+//-------------------------------------------------
+// SLOT_INTERFACE( bbcm_modem_devices )
+//-------------------------------------------------
+
+
+// slot devices
+#include "meup.h"
+#include "scsiaiv.h"
+
+
+void bbcm_modem_devices(device_slot_interface &device)
+{
+ device.option_add("meup", BBC_MEUP); /* Master Extra User Ports */
+ //device.option_add("modem", BBC_MODEM); /* Beebug Master Modem */
+ device.option_add("scsiaiv", BBC_SCSIAIV); /* Acorn AIV SCSI Host Adaptor */
+ //device.option_add("vp415", BBC_VP415); /* Philips VP415 */
+}