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// license:BSD-3-Clause
// copyright-holders:hap
// thanks-to:Berger
/******************************************************************************

    Fidelity Electronics 68000 based board driver

    TODO:
    - how does dual-CPU work?
    - IRQ level/timing is unknown
    - USART is not emulated
    - V11 CPU should be M68EC060, not yet emulated. Now using M68EC040 in its place
      at twice the frequency due to lack of superscalar.
    - V11 beeper is too high pitched, obviously related to wrong CPU type too

******************************************************************************

Elite Avant Garde (EAG, model 6114)
-----------------------------------

There are 5 versions of model 6114(V1 to V5). The one emulated here came from a V2,
but is practically emulated as a V4.

V1: 128KB DRAM, no EEPROM
V2: 128KB DRAM
V3: 512KB DRAM
V4: 1MB DRAM
V5: 128KB+64KB DRAM, dual-CPU! (2*68K @ 16MHz)

V6-V11 are on model 6117. Older 1986 model 6081 uses a 6502 CPU.

Hardware info:
--------------
- MC68HC000P12F 16MHz CPU, 16MHz XTAL
- MB1422A DRAM Controller, 25MHz XTAL near, 4 DRAM slots(V2: slot 1 and 2 64KB)
- 2*27C512 64KB EPROM, 2*KM6264AL-10 8KB SRAM, 2*AT28C64X 8KB EEPROM
- OKI M82C51A-2 USART, 4.9152MHz XTAL
- other special: magnet sensors, external module slot, serial port

IRQ source is unknown. Several possibilities:
- NE555 timer IC
- MM/SN74HC4060 binary counter IC (near the M82C51A)
- one of the XTALs, plus divider of course

The module slot pinout is different from SCC series. The data on those appears
to be compatible with EAG though and will load fine with an adapter.

The USART allows for a serial connection between the chess computer and another
device, for example a PC. Fidelity released a DOS tool called EAGLINK which
featured PC printer support, complete I/O control, detailed information while
the program is 'thinking', etc.

Memory map: (of what is known)
-----------
000000-01FFFF: 128KB ROM
104000-107FFF: 16KB SRAM
200000-2FFFFF: hashtable DRAM (max. 1MB)
300000-30000F W hi d0: NE591: 7seg data
300000-30000F W lo d0: NE591: LED data
300000-30000F R lo d7: 74259: keypad rows 0-7
400000-400001 W lo d0-d3: 74145/7442: led/keypad mux, buzzer out
400000-4????? R hi: external module slot
700002-700003 R lo d7: 74251: keypad row 8
604000-607FFF: 16KB EEPROM


******************************************************************************

Elite Avant Garde (EAG, model 6117)
-----------------------------------

There are 6 versions of model 6114(V6 to V11). From a programmer's point of view,
the hardware is very similar to model 6114.

V6: 68020, 512KB hashtable RAM
V7: 68020, 1MB h.RAM
V8: 2*68020, 512KB+128KB h.RAM
V9: 68030, 1MB h.RAM
V10: 68040, 1MB h.RAM
V11: 68060, 2MB h.RAM, high speed

V7 Hardware info:
-----------------
- MC68020RC25E CPU, 25MHz XTAL - this PCB was overclocked, original was 20MHz so let's use that
- 4*AS7C164-20PC 8KB SRAM, 2*KM684000ALG-7L 512KB CMOS SRAM
- 2*27C512? 64KB EPROM, 2*HM6264LP-15 8KB SRAM, 2*AT28C64B 8KB EEPROM, 2*GAL16V8C
- same as 6114: M82C51A, NE555, SN74HC4060, module slot, chessboard, ..

V7 Memory map:
--------------
000000-01FFFF: 128KB ROM
104000-107FFF: 16KB SRAM (unused?)
200000-2FFFFF: hashtable SRAM
300000-30000x: see model 6114
400000-40000x: see model 6114
700000-70000x: see model 6114
604000-607FFF: 16KB EEPROM
800000-807FFF: 32KB SRAM

V10 Hardware info:
------------------
- 68040 CPU, 25MHz
- other: assume same or very similar to V11(see below)

The ROM dump came from the V11(see below). Built-in factory test proves
that this program is a V10. Hold TB button immediately after power-on and
press it for a sequence of tests:
1) all LEDs on
2) F40C: V10 program version
3) 38b9: V10 ROM checksum
4) xxxx: external module ROM checksum (0000 if no module present)
5) xxxx: user settings (stored in EEPROM)
6) xxxx: "
7) 1024: hashtable RAM size
8) return to game

V11 Hardware info:
------------------
- MC68EC060RC75 CPU, 36MHz XTAL(36MHz bus, 72MHz CPU), CPU cooler required
- 4*CXK5863AP-20 8KB SRAM, 4*K6X4008C1F-DF55 512KB CMOS SRAM
- 4*M27C256B 32KB EPROM, 2*AT28C64 8KB EEPROM, 5*GAL16V8D
- NEC D71051C USART, assume 8MHz, on quick glance it's same as the OKI USART
- same as 6114: NE555, SN74HC4060, module slot, chessboard, ..

This is a custom overclocked V10, manufactured by Wilfried Bucke. PCB is marked:
"CHESS HW DESIGN COPYRIGHT 22-10-2002: REVA03 510.1136A01/510.1144B01 COMPONENT SIDE"
There are two versions of this, one with a 66MHz CPU, one with a 72MHz CPU.
Maybe other differences too?

V1x Memory map:
---------------
000000-01FFFF: 128KB ROM
200000-3FFFFF: hashtable SRAM (less on V10?)
B0000x-xxxxxx: see V7, -800000

******************************************************************************/

#include "emu.h"
#include "cpu/m68000/m68000.h"
#include "machine/nvram.h"

#include "includes/fidelz80.h"

// internal artwork
#include "fidel_eag.lh" // clickable


class fidel68k_state : public fidelz80base_state
{
public:
	fidel68k_state(const machine_config &mconfig, device_type type, const char *tag)
		: fidelz80base_state(mconfig, type, tag)
	{ }

	// devices/pointers

	// EAG(6114/6117)
	void eag_prepare_display();
	DECLARE_READ8_MEMBER(eag_input1_r);
	DECLARE_WRITE8_MEMBER(eag_leds_w);
	DECLARE_WRITE8_MEMBER(eag_7seg_w);
	DECLARE_WRITE8_MEMBER(eag_mux_w);
	DECLARE_READ8_MEMBER(eag_input2_r);
	DECLARE_READ8_MEMBER(eag_cart_r);
};



// Devices, I/O

/******************************************************************************
    EAG
******************************************************************************/

// misc handlers

void fidel68k_state::eag_prepare_display()
{
	// 8*7seg leds, (8+1)*8 chessboard leds
	UINT8 seg_data = BITSWAP8(m_7seg_data,0,1,3,2,7,5,6,4);
	set_display_segmask(0x1ef, 0x7f);
	display_matrix(16, 9, m_led_data << 8 | seg_data, m_inp_mux);
}


// TTL/generic

READ8_MEMBER(fidel68k_state::eag_input1_r)
{
	// a1-a3,d7: multiplexed inputs (active low)
	return (read_inputs(9) >> offset & 1) ? 0 : 0x80;
}

READ8_MEMBER(fidel68k_state::eag_input2_r)
{
	// d7: multiplexed inputs highest bit
	return (read_inputs(9) & 0x100) ? 0x80 : 0;
}

WRITE8_MEMBER(fidel68k_state::eag_leds_w)
{
	// a1-a3,d0: led data
	m_led_data = (m_led_data & ~(1 << offset)) | ((data & 1) << offset);
	eag_prepare_display();
}

WRITE8_MEMBER(fidel68k_state::eag_7seg_w)
{
	// a1-a3,d0(d8): digit segment data
	m_7seg_data = (m_7seg_data & ~(1 << offset)) | ((data & 1) << offset);
	eag_prepare_display();
}

WRITE8_MEMBER(fidel68k_state::eag_mux_w)
{
	// d0-d3: 74145 A-D
	// 74145 0-8: input mux, digit/led select
	// 74145 9: speaker out
	UINT16 sel = 1 << (data & 0xf);
	m_speaker->level_w(sel >> 9 & 1);
	m_inp_mux = sel & 0x1ff;
	eag_prepare_display();
}

READ8_MEMBER(fidel68k_state::eag_cart_r)
{
	if (m_cart->exists())
		return m_cart->read_rom(space, offset);
	else
		return 0;
}



/******************************************************************************
    Address Maps
******************************************************************************/

// EAG

static ADDRESS_MAP_START( eag_map, AS_PROGRAM, 16, fidel68k_state )
	AM_RANGE(0x000000, 0x01ffff) AM_ROM
	AM_RANGE(0x104000, 0x107fff) AM_RAM
	AM_RANGE(0x200000, 0x2fffff) AM_RAM // DRAM slots
	AM_RANGE(0x300000, 0x30000f) AM_MIRROR(0x000010) AM_READWRITE8(eag_input1_r, eag_leds_w, 0x00ff)
	AM_RANGE(0x300000, 0x30000f) AM_MIRROR(0x000010) AM_WRITE8(eag_7seg_w, 0xff00) AM_READNOP
	AM_RANGE(0x400000, 0x407fff) AM_READ8(eag_cart_r, 0xff00)
	AM_RANGE(0x400000, 0x400001) AM_WRITE8(eag_mux_w, 0x00ff)
	AM_RANGE(0x400002, 0x400007) AM_WRITENOP // ?
	AM_RANGE(0x604000, 0x607fff) AM_RAM AM_SHARE("nvram")
	AM_RANGE(0x700002, 0x700003) AM_READ8(eag_input2_r, 0x00ff)
ADDRESS_MAP_END

static ADDRESS_MAP_START( eagv7_map, AS_PROGRAM, 32, fidel68k_state )
	AM_RANGE(0x000000, 0x01ffff) AM_ROM
	AM_RANGE(0x104000, 0x107fff) AM_RAM
	AM_RANGE(0x200000, 0x2fffff) AM_RAM
	AM_RANGE(0x300000, 0x30000f) AM_MIRROR(0x000010) AM_READWRITE8(eag_input1_r, eag_leds_w, 0x00ff00ff)
	AM_RANGE(0x300000, 0x30000f) AM_MIRROR(0x000010) AM_WRITE8(eag_7seg_w, 0xff00ff00) AM_READNOP
	AM_RANGE(0x400000, 0x407fff) AM_READ8(eag_cart_r, 0xff00ff00)
	AM_RANGE(0x400000, 0x400003) AM_WRITE8(eag_mux_w, 0x00ff0000)
	AM_RANGE(0x400004, 0x400007) AM_WRITENOP // ?
	AM_RANGE(0x604000, 0x607fff) AM_RAM AM_SHARE("nvram")
	AM_RANGE(0x700000, 0x700003) AM_READ8(eag_input2_r, 0x000000ff)
	AM_RANGE(0x800000, 0x807fff) AM_RAM
ADDRESS_MAP_END

static ADDRESS_MAP_START( eagv11_map, AS_PROGRAM, 32, fidel68k_state )
	AM_RANGE(0x00000000, 0x0001ffff) AM_ROM
	AM_RANGE(0x00200000, 0x003fffff) AM_RAM
	AM_RANGE(0x00b00000, 0x00b0000f) AM_MIRROR(0x00000010) AM_READWRITE8(eag_input1_r, eag_leds_w, 0x00ff00ff)
	AM_RANGE(0x00b00000, 0x00b0000f) AM_MIRROR(0x00000010) AM_WRITE8(eag_7seg_w, 0xff00ff00) AM_READNOP
	AM_RANGE(0x00c00000, 0x00c07fff) AM_READ8(eag_cart_r, 0xff00ff00)
	AM_RANGE(0x00c00000, 0x00c00003) AM_WRITE8(eag_mux_w, 0x00ff0000)
	AM_RANGE(0x00c00004, 0x00c00007) AM_WRITENOP // ?
	AM_RANGE(0x00e04000, 0x00e07fff) AM_RAM AM_SHARE("nvram")
	AM_RANGE(0x00f00000, 0x00f00003) AM_READ8(eag_input2_r, 0x000000ff)
	AM_RANGE(0x01000000, 0x0101ffff) AM_RAM
ADDRESS_MAP_END



/******************************************************************************
    Input Ports
******************************************************************************/

static INPUT_PORTS_START( eag )
	PORT_START("IN.0")
	PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_TOGGLE PORT_NAME("Square h1")
	PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_TOGGLE PORT_NAME("Square g1")
	PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_TOGGLE PORT_NAME("Square f1")
	PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_TOGGLE PORT_NAME("Square e1")
	PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_TOGGLE PORT_NAME("Square d1")
	PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_TOGGLE PORT_NAME("Square c1")
	PORT_BIT(0x40, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_TOGGLE PORT_NAME("Square b1")
	PORT_BIT(0x80, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_TOGGLE PORT_NAME("Square a1")
	PORT_BIT(0x100, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_DEL) PORT_NAME("CL")

	PORT_START("IN.1")
	PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_TOGGLE PORT_NAME("Square h2")
	PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_TOGGLE PORT_NAME("Square g2")
	PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_TOGGLE PORT_NAME("Square f2")
	PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_TOGGLE PORT_NAME("Square e2")
	PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_TOGGLE PORT_NAME("Square d2")
	PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_TOGGLE PORT_NAME("Square c2")
	PORT_BIT(0x40, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_TOGGLE PORT_NAME("Square b2")
	PORT_BIT(0x80, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_TOGGLE PORT_NAME("Square a2")
	PORT_BIT(0x100, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_M) PORT_NAME("DM")

	PORT_START("IN.2")
	PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_TOGGLE PORT_NAME("Square h3")
	PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_TOGGLE PORT_NAME("Square g3")
	PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_TOGGLE PORT_NAME("Square f3")
	PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_TOGGLE PORT_NAME("Square e3")
	PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_TOGGLE PORT_NAME("Square d3")
	PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_TOGGLE PORT_NAME("Square c3")
	PORT_BIT(0x40, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_TOGGLE PORT_NAME("Square b3")
	PORT_BIT(0x80, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_TOGGLE PORT_NAME("Square a3")
	PORT_BIT(0x100, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_R) PORT_CODE(KEYCODE_N) PORT_NAME("New Game")

	PORT_START("IN.3")
	PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_TOGGLE PORT_NAME("Square h4")
	PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_TOGGLE PORT_NAME("Square g4")
	PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_TOGGLE PORT_NAME("Square f4")
	PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_TOGGLE PORT_NAME("Square e4")
	PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_TOGGLE PORT_NAME("Square d4")
	PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_TOGGLE PORT_NAME("Square c4")
	PORT_BIT(0x40, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_TOGGLE PORT_NAME("Square b4")
	PORT_BIT(0x80, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_TOGGLE PORT_NAME("Square a4")

	PORT_START("IN.4")
	PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_TOGGLE PORT_NAME("Square h5")
	PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_TOGGLE PORT_NAME("Square g5")
	PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_TOGGLE PORT_NAME("Square f5")
	PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_TOGGLE PORT_NAME("Square e5")
	PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_TOGGLE PORT_NAME("Square d5")
	PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_TOGGLE PORT_NAME("Square c5")
	PORT_BIT(0x40, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_TOGGLE PORT_NAME("Square b5")
	PORT_BIT(0x80, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_TOGGLE PORT_NAME("Square a5")

	PORT_START("IN.5")
	PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_TOGGLE PORT_NAME("Square h6")
	PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_TOGGLE PORT_NAME("Square g6")
	PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_TOGGLE PORT_NAME("Square f6")
	PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_TOGGLE PORT_NAME("Square e6")
	PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_TOGGLE PORT_NAME("Square d6")
	PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_TOGGLE PORT_NAME("Square c6")
	PORT_BIT(0x40, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_TOGGLE PORT_NAME("Square b6")
	PORT_BIT(0x80, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_TOGGLE PORT_NAME("Square a6")

	PORT_START("IN.6")
	PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_TOGGLE PORT_NAME("Square h7")
	PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_TOGGLE PORT_NAME("Square g7")
	PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_TOGGLE PORT_NAME("Square f7")
	PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_TOGGLE PORT_NAME("Square e7")
	PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_TOGGLE PORT_NAME("Square d7")
	PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_TOGGLE PORT_NAME("Square c7")
	PORT_BIT(0x40, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_TOGGLE PORT_NAME("Square b7")
	PORT_BIT(0x80, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_TOGGLE PORT_NAME("Square a7")

	PORT_START("IN.7")
	PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_TOGGLE PORT_NAME("Square h8")
	PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_TOGGLE PORT_NAME("Square g8")
	PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_TOGGLE PORT_NAME("Square f8")
	PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_TOGGLE PORT_NAME("Square e8")
	PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_TOGGLE PORT_NAME("Square d8")
	PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_TOGGLE PORT_NAME("Square c8")
	PORT_BIT(0x40, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_TOGGLE PORT_NAME("Square b8")
	PORT_BIT(0x80, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_TOGGLE PORT_NAME("Square a8")

	PORT_START("IN.8")
	PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_6) PORT_CODE(KEYCODE_6_PAD) PORT_NAME("PB / King")
	PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_5) PORT_CODE(KEYCODE_5_PAD) PORT_NAME("PV / Queen")
	PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_4) PORT_CODE(KEYCODE_4_PAD) PORT_NAME("TM / Rook")
	PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_3) PORT_CODE(KEYCODE_3_PAD) PORT_NAME("ST / Bishop")
	PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_2) PORT_CODE(KEYCODE_2_PAD) PORT_NAME("TB / Knight")
	PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_1) PORT_CODE(KEYCODE_1_PAD) PORT_NAME("LV / Pawn")
	PORT_BIT(0x40, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_O) PORT_NAME("Option")
	PORT_BIT(0x80, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_V) PORT_NAME("RV")
INPUT_PORTS_END



/******************************************************************************
    Machine Drivers
******************************************************************************/

static MACHINE_CONFIG_START( eag, fidel68k_state )

	/* basic machine hardware */
	MCFG_CPU_ADD("maincpu", M68000, XTAL_16MHz)
	MCFG_CPU_PROGRAM_MAP(eag_map)
	MCFG_CPU_PERIODIC_INT_DRIVER(fidel68k_state, irq2_line_hold, 600) // complete guess

	MCFG_NVRAM_ADD_1FILL("nvram")

	MCFG_TIMER_DRIVER_ADD_PERIODIC("display_decay", fidelz80base_state, display_decay_tick, attotime::from_msec(1))
	MCFG_DEFAULT_LAYOUT(layout_fidel_eag)

	/* sound hardware */
	MCFG_SPEAKER_STANDARD_MONO("mono")
	MCFG_SOUND_ADD("speaker", SPEAKER_SOUND, 0)
	MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.25)

	/* cartridge */
	MCFG_GENERIC_CARTSLOT_ADD("cartslot", generic_plain_slot, "fidel_scc")
	MCFG_GENERIC_EXTENSIONS("bin,dat")
	MCFG_GENERIC_LOAD(fidelz80base_state, scc_cartridge)
	MCFG_SOFTWARE_LIST_ADD("cart_list", "fidel_scc")
MACHINE_CONFIG_END

static MACHINE_CONFIG_DERIVED( eagv7, eag )

	/* basic machine hardware */
	MCFG_CPU_REPLACE("maincpu", M68020, XTAL_20MHz)
	MCFG_CPU_PROGRAM_MAP(eagv7_map)
	MCFG_CPU_PERIODIC_INT_DRIVER(fidel68k_state, irq2_line_hold, 600) // complete guess
MACHINE_CONFIG_END

static MACHINE_CONFIG_DERIVED( eagv9, eag )

	/* basic machine hardware */
	MCFG_CPU_REPLACE("maincpu", M68030, XTAL_32MHz)
	MCFG_CPU_PROGRAM_MAP(eagv7_map)
	MCFG_CPU_PERIODIC_INT_DRIVER(fidel68k_state, irq2_line_hold, 600) // complete guess
MACHINE_CONFIG_END

static MACHINE_CONFIG_DERIVED( eagv10, eag )

	/* basic machine hardware */
	MCFG_CPU_REPLACE("maincpu", M68040, XTAL_25MHz)
	MCFG_CPU_PROGRAM_MAP(eagv11_map)
	MCFG_CPU_PERIODIC_INT_DRIVER(fidel68k_state, irq2_line_hold, 600) // complete guess
MACHINE_CONFIG_END

static MACHINE_CONFIG_DERIVED( eagv11, eag )

	/* basic machine hardware */
	MCFG_CPU_REPLACE("maincpu", M68EC040, XTAL_36MHz*2*2) // wrong! should be M68EC060 @ 72MHz
	MCFG_CPU_PROGRAM_MAP(eagv11_map)
	MCFG_CPU_PERIODIC_INT_DRIVER(fidel68k_state, irq2_line_hold, 600) // complete guess
MACHINE_CONFIG_END



/******************************************************************************
    ROM Definitions
******************************************************************************/

ROM_START( feagv2 )
	ROM_REGION16_BE( 0x20000, "maincpu", 0 )
	ROM_LOAD16_BYTE("6114_e5.u18", 0x00000, 0x10000, CRC(f9c7bada) SHA1(60e545f829121b9a4f1100d9e85ac83797715e80) ) // 27c512
	ROM_LOAD16_BYTE("6114_o5.u19", 0x00001, 0x10000, CRC(04f97b22) SHA1(8b2845dd115498f7b385e8948eca6a5893c223d1) ) // "
ROM_END


ROM_START( feagv7 )
	ROM_REGION( 0x20000, "maincpu", 0 )
	ROM_LOAD16_BYTE("eag-v7b", 0x00000, 0x10000, CRC(f2f68b63) SHA1(621e5073e9c5083ac9a9b467f3ef8aa29beac5ac) )
	ROM_LOAD16_BYTE("eag-v7a", 0x00001, 0x10000, CRC(506b688f) SHA1(0a091c35d0f01166b57f964b111cde51c5720d58) )
ROM_END


ROM_START( feagv9 )
	ROM_REGION( 0x20000, "maincpu", 0 )
	ROM_LOAD16_BYTE("eag-v9b", 0x00000, 0x10000, CRC(60523199) SHA1(a308eb6b782732af1ab2fd0ed8b046de7a8dd24b) )
	ROM_LOAD16_BYTE("eag-v9a", 0x00001, 0x10000, CRC(255c63c0) SHA1(8aa0397bdb3731002f5b066cd04ec62531267e22) )
ROM_END


ROM_START( feagv11 )
	ROM_REGION( 0x20000, "maincpu", 0 )
	ROM_LOAD32_BYTE("16", 0x00000, 0x08000, CRC(8375d61f) SHA1(e042f6f01480c59ee09a458cf34f135664479824) ) // 27c256
	ROM_LOAD32_BYTE("17", 0x00001, 0x08000, CRC(bfd14916) SHA1(115af6dfd29ddd8ad6d2ce390f8ecc4d60de6fce) ) // "
	ROM_LOAD32_BYTE("18", 0x00002, 0x08000, CRC(9341dcaf) SHA1(686bd4799e89ffaf11a813d4cf5a2aedd4c2d97a) ) // "
	ROM_LOAD32_BYTE("19", 0x00003, 0x08000, CRC(a70c5468) SHA1(7f6b4f46577d5cfdaa84d387c7ce35d941e5bbc7) ) // "
ROM_END

#define rom_feagv10 rom_feagv11



/******************************************************************************
    Drivers
******************************************************************************/

/*    YEAR  NAME     PARENT   COMPAT  MACHINE  INPUT    INIT              COMPANY, FULLNAME, FLAGS */
CONS( 1989, feagv2,  0,       0,      eag,     eag,     driver_device, 0, "Fidelity Electronics", "Elite Avant Garde (model 6114-2/3/4)", MACHINE_SUPPORTS_SAVE | MACHINE_CLICKABLE_ARTWORK )
CONS( 1990, feagv7,  feagv2,  0,      eagv7,   eag,     driver_device, 0, "Fidelity Electronics", "Elite Avant Garde (model 6117-7)", MACHINE_SUPPORTS_SAVE | MACHINE_CLICKABLE_ARTWORK )
CONS( 1990, feagv9,  feagv2,  0,      eagv9,   eag,     driver_device, 0, "Fidelity Electronics", "Elite Avant Garde (model 6117-9)", MACHINE_SUPPORTS_SAVE | MACHINE_CLICKABLE_ARTWORK )
CONS( 1990, feagv10, feagv2,  0,      eagv10,  eag,     driver_device, 0, "Fidelity Electronics", "Elite Avant Garde (model 6117-10)", MACHINE_SUPPORTS_SAVE | MACHINE_CLICKABLE_ARTWORK )
CONS( 2002, feagv11, feagv2,  0,      eagv11,  eag,     driver_device, 0, "hack (Wilfried Bucke)", "Elite Avant Garde (model 6117-11)", MACHINE_SUPPORTS_SAVE | MACHINE_CLICKABLE_ARTWORK )