Adding two new 8008 homebrew computers

scripts/src/bus.lua

@@ -5809,3 +5809,17 @@ if (BUSES["HEATH_TLB_CONNECTOR"]~=null) then
 		MAME_DIR .. "src/devices/bus/heathzenith/h19/tlb.h",
 	}
 end
+
+---------------------------------------------------
+--
+--@src/devices/bus/super8008/super8008.h,BUSES["SUPER8008"] = true
+---------------------------------------------------
+
+if (BUSES["SUPER8008"]~=null) then
+	files {
+		MAME_DIR .. "src/devices/bus/super8008/super8008.cpp",
+		MAME_DIR .. "src/devices/bus/super8008/super8008.h",
+		MAME_DIR .. "src/devices/bus/super8008/super8008_blaster.cpp",
+		MAME_DIR .. "src/devices/bus/super8008/super8008_blaster.h",
+	}
+end

src/devices/bus/super8008/super8008.cpp

@@ -0,0 +1,196 @@
+// license:BSD-3-Clause
+// copyright-holders:Jeremy English
+/**********************************************************************
+
+	8008-Super Bus Device aka ThunderDome
+
+	Scott's 8008 Supercomputer a.k.a. Master Blaster
+	by Dr. Scott M. Baker
+
+**********************************************************************/
+
+#include "emu.h"
+#include "super8008.h"
+
+
+//**************************************************************************
+//  DEVICE DEFINITIONS
+//**************************************************************************
+
+DEFINE_DEVICE_TYPE(SUPER8008_BUS,  super8008_bus_device,  "super8008_bus",  "super8008 bus")
+DEFINE_DEVICE_TYPE(SUPER8008_SLOT, super8008_slot_device, "super8008_slot", "super8008 slot")
+
+
+
+//**************************************************************************
+//  LIVE DEVICE
+//**************************************************************************
+
+//-------------------------------------------------
+//  device_super8008_card_interface - constructor
+//-------------------------------------------------
+
+device_super8008_card_interface::device_super8008_card_interface(const machine_config &mconfig, device_t &device) :
+	device_interface(device, "super8008bus"),
+	m_bus(nullptr)
+{
+}
+
+void device_super8008_card_interface::interface_pre_start()
+{
+	if (!m_bus)
+		throw device_missing_dependencies();
+}
+
+
+//-------------------------------------------------
+//  super8008_slot_device - constructor
+//-------------------------------------------------
+super8008_slot_device::super8008_slot_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) :
+	device_t(mconfig, SUPER8008_SLOT, tag, owner, clock),
+	device_single_card_slot_interface<device_super8008_card_interface>(mconfig, *this),
+	m_bus(*this, DEVICE_SELF_OWNER)
+{
+}
+
+
+//-------------------------------------------------
+//  device_start - device-specific startup
+//-------------------------------------------------
+
+void super8008_slot_device::device_start()
+{
+	device_super8008_card_interface *const dev = get_card_device();
+	if (dev)
+		m_bus->add_card(*dev);
+
+}
+
+
+//-------------------------------------------------
+//  super8008_bus_device - constructor
+//-------------------------------------------------
+
+super8008_bus_device::super8008_bus_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) :
+	device_t(mconfig, SUPER8008_BUS, tag, owner, clock)
+{
+	m_ext_take = 0;
+}
+
+super8008_bus_device::~super8008_bus_device()
+{
+}
+
+
+//-------------------------------------------------
+//  device_start - device-specific startup
+//-------------------------------------------------
+
+void super8008_bus_device::device_start()
+{
+}
+
+
+//-------------------------------------------------
+//  device_reset - device-specific reset
+//-------------------------------------------------
+
+void super8008_bus_device::device_reset()
+{
+}
+
+void super8008_bus_device::device_post_load()
+{
+}
+
+//-------------------------------------------------
+//  add_card - add card
+//-------------------------------------------------
+
+void super8008_bus_device::add_card(device_super8008_card_interface &card)
+{
+	card.m_bus = this;
+	m_device_list.emplace_back(card);
+}
+
+void super8008_bus_device::ext_write(offs_t offset, uint8_t data)
+{
+	//ext_cs is pulled high through a 10k resistor and is active low
+	if (m_ext_cs)
+	{
+		return;
+	}
+
+	for (device_super8008_card_interface &entry : m_device_list)
+	{
+		entry.ext_write(offset, data);
+	}
+}
+
+uint8_t super8008_bus_device::ext_read(offs_t offset)
+{
+	uint8_t data = 0;
+
+	if (m_ext_cs)
+	{
+		return data;
+	}
+
+	for (device_super8008_card_interface &entry : m_device_list)
+	{
+		data |= entry.ext_read(offset);
+	}
+
+	return data;
+}
+
+void super8008_bus_device::ext_take(int state)
+{ 
+	for (device_super8008_card_interface &entry : m_device_list)
+	{
+		entry.ext_take(state);
+	}
+	m_ext_take = state;
+}
+
+void super8008_bus_device::ext_int()
+{
+	for (device_super8008_card_interface &entry : m_device_list)
+	{
+		entry.ext_int();
+	}
+}
+
+void super8008_bus_device::ext_reset()
+{
+	for (device_super8008_card_interface &entry : m_device_list)
+	{
+		entry.ext_reset();
+	}
+}
+
+void super8008_bus_device::ext_req()
+{
+	for (device_super8008_card_interface &entry : m_device_list)
+	{
+		entry.ext_req();
+	}	
+}
+
+uint8_t super8008_bus_device::ext_run()
+{
+	uint8_t run_status = 0;
+	for (device_super8008_card_interface &entry : m_device_list)
+	{
+		run_status |= entry.ext_run();
+	}
+	return run_status;
+}
+
+
+//Cards
+#include "super8008_blaster.h"
+void super8008_bus_devices(device_slot_interface &device)
+{
+	device.option_add("super8008_blaster", SUPER8008_BLASTER);
+}