Adding two new 8008 homebrew computers

scripts/src/bus.lua

@@ -5859,3 +5859,17 @@ if (BUSES["AMIGA_CPUSLOT"]~=null) then
 		MAME_DIR .. "src/devices/bus/amiga/cpuslot/megamix500.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 +1,173 @@
+// 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()
+{
+}
+
+
+//-------------------------------------------------
+//  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)
+{
+	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;
+
+	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);
+}

src/devices/bus/super8008/super8008.h

@@ -0,0 +1,181 @@
+// 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
+
+	Schematics:
+	https://github.com/sbelectronics/8008-super 
+
+	ROM Source Code:
+	https://github.com/sbelectronics/h8/tree/master/h8-8008
+
+	Demo:
+	https://youtu.be/wurKTPdPhrI?si=aerTbgHIFm_8YwU2
+
+	Write up:
+	https://www.smbaker.com/master-blaster-an-8008-supercomputer
+
+	MAME driver for Jim Loos 8008-SBC
+	src/mame/homebrew/sbc8008.cpp
+
+	This computer is based on Jim Loos 8008-SBC:
+	https://github.com/jim11662418/8008-SBC    
+
+============================================================================
+
+	 1 GND             2 NCO
+	 3 EXT_A0          4 EXT_TAKE0
+	 5 EXT_A1          6 EXT_TAKE1
+	 7 EXT_A2          8 EXT_TAKE2
+	 9 EXT_A3         10 EXT_TAKE3
+	11 EXT_A4         12 EXT_TAKE4
+	13 EXT_A5         14 EXT_TAKE5
+	15 EXT_A6         16 EXT_TAKE6
+	17 EXT_A7         18 EXT_TAKE7
+	19 EXT_A8         20 EXT_RUN0
+	21 EXT_A9         22 EXT_RUN1
+	23 EXT_A10        24 EXT_RUN2
+	25 EXT_A11        26 EXT_RUN3
+	27 EXT_A12        28 EXT_RUN4
+	29 EXT_A13        30 EXT_RUN5
+	31 GND            32 EXT_RUN6
+	33 EXT_D0         34 EXT_RUN7
+	35 EXT_D1         36 EXT_REQ0
+	37 EXT_D2         38 EXT_REQ1
+	39 EXT_D3         40 EXT_REQ2
+	41 EXT_D4         42 EXT_REQ3
+	43 EXT_D5         44 EXT_REQ4
+	45 EXT_D6         46 EXT_REQ5
+	47 EXT_D7         48 EXT_REQ6
+	49 GND            50 EXT_REQ7
+	51 EXT_CS         52 EXT_INT0
+	53 EXT_RD         54 EXT_INT1
+	55 EXT_WR         56 EXT_INT2
+	57 EXT_RESET      58 EXT_INT3
+	59 EXT_BUSDIR     60 EXT_INT4
+	61 EXT_WRP        62 EXT_INT5
+	63 EXT_TAKEW      64 EXT_INT6
+	65 NC             66 EXT_INT7
+	67 +8V            68 NC
+
+
+***************************************************************************/
+
+#ifndef MAME_BUS_SUPER8008_SUPER8008_H
+#define MAME_BUS_SUPER8008_SUPER8008_H
+
+#pragma once
+
+#include <functional>
+#include <vector>
+
+
+
+//**************************************************************************
+//  TYPE DEFINITIONS
+//**************************************************************************
+
+class super8008_bus_device;
+
+// ======================> device_super8008_card_interface
+
+class device_super8008_card_interface : public device_interface
+{
+	friend class super8008_bus_device;
+
+public:
+
+	virtual void ext_write( offs_t offset, uint8_t data) {}
+	virtual uint8_t ext_read(offs_t offset) {return 0;}
+	virtual void ext_int(){}
+	virtual void ext_reset(){}
+	virtual void ext_req(){}
+	virtual void ext_take(int state) { }
+	virtual uint8_t ext_run() {return 0;}
+
+
+protected:
+	// construction/destruction
+	device_super8008_card_interface(const machine_config &mconfig, device_t &device);
+
+	virtual void interface_pre_start() override;
+
+	super8008_bus_device  *m_bus;
+
+};
+
+
+
+// ======================> super8008_bus_device
+
+class super8008_bus_device : public device_t
+{
+public:
+	// construction/destruction
+	super8008_bus_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
+	~super8008_bus_device();
+
+	void add_card(device_super8008_card_interface &card);
+
+	virtual void ext_write( offs_t offset, uint8_t data);
+	virtual uint8_t ext_read(offs_t offset);
+	void ext_take(int state);
+	void ext_int();
+	void ext_reset();
+	void ext_req();
+	uint8_t ext_run();
+
+protected:
+	virtual void device_start() override ATTR_COLD;
+
+private:
+	using card_vector = std::vector<std::reference_wrapper<device_super8008_card_interface> >;
+
+	card_vector m_device_list;
+
+	uint8_t m_ext_take;
+};
+
+
+// ======================> super8008_slot_device
+
+class super8008_slot_device : public device_t, public device_single_card_slot_interface<device_super8008_card_interface>
+{
+public:
+	// construction/destruction
+	template <typename T>
+	super8008_slot_device(machine_config const &mconfig, char const *tag, device_t *owner, T &&opts, char const *dflt)
+		: super8008_slot_device(mconfig, tag, owner, DERIVED_CLOCK(1, 1))
+	{
+		option_reset();
+		opts(*this);
+		set_default_option(dflt);
+		set_fixed(false);
+	}
+	super8008_slot_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
+
+	template <typename T> void set_bus(T &&tag) { m_bus.set_tag(std::forward<T>(tag)); }
+
+protected:
+	// device-level overrides
+	virtual void device_start() override;
+
+private:
+	required_device<super8008_bus_device> m_bus;
+};
+
+
+
+// device type definition
+DECLARE_DEVICE_TYPE(SUPER8008_BUS,  super8008_bus_device)
+DECLARE_DEVICE_TYPE(SUPER8008_SLOT, super8008_slot_device)
+
+void super8008_bus_devices(device_slot_interface &device);
+
+
+#endif // MAME_BUS_super8008_super8008_H