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-// license:BSD-3-Clause
-// copyright-holders:hap
-// thanks-to:Berger
-/******************************************************************************
-
-AVE Micro Systems ARB chess computer driver, in some regions redistributed
-by Chafitz, and in Germany by Sandy Electronic.
-
-Auto Response Board (ARB) overview:
-- R6502P CPU @ 2MHz(4MHz XTAL), R6522P VIA
-- 2KB RAM(4*2114), cartridge port
-- magnetic chessboard, 8*8+12 leds
-- PCB label AV001C01 REV A
-
-The electronic magnetic chessboard is the first of its kind. AVE later licensed
-it to Fidelity (see fidel_elite.cpp).
-ARB is a romless system, the program ROM is on a cartridge.
-
-Known chess modules (*denotes not dumped yet):
-- Sargon 2.5
-- *Grand Master Series 3
-- *Grand Master Series 3.5
-- Grand Master Series 4.0
-
-Other games:
-- *Avelan (checkers)
-
-Newer modules included button label stickers for OPTIONS, Verify, Take Back, Clear.
-
-Around 2012, Steve Braid(aka Trilobyte/Steve UK) started manufacturing ARB V2 boards
-without a module slot. CPU and VIA were replaced with new WDC 14MHz-rated chips,
-running at 16MHz.
-
-TODO:
-- verify gms40 module memory layout
-- need to add checkers pieces and custom initial position when Avelan gets dumped
-
-******************************************************************************/
-
-#include "emu.h"
-#include "cpu/m6502/m6502.h"
-#include "cpu/m6502/m65c02.h"
-#include "video/pwm.h"
-#include "machine/sensorboard.h"
-#include "machine/6522via.h"
-#include "machine/nvram.h"
-#include "sound/dac.h"
-#include "bus/generic/slot.h"
-#include "bus/generic/carts.h"
-
-#include "speaker.h"
-#include "softlist.h"
-
-// internal artwork
-#include "ave_arb.lh" // clickable
-
-
-namespace {
-
-class arb_state : public driver_device
-{
-public:
- arb_state(const machine_config &mconfig, device_type type, const char *tag) :
- driver_device(mconfig, type, tag),
- m_maincpu(*this, "maincpu"),
- m_display(*this, "display"),
- m_board(*this, "board"),
- m_via(*this, "via"),
- m_extram(*this, "extram", 0x800, ENDIANNESS_LITTLE),
- m_dac(*this, "dac"),
- m_cart(*this, "cartslot"),
- m_inputs(*this, "IN.%u", 0)
- { }
-
- // halt button is tied to NMI, reset button to RESET(but only if halt button is held)
- DECLARE_INPUT_CHANGED_MEMBER(reset_button) { update_reset(); }
- DECLARE_INPUT_CHANGED_MEMBER(halt_button) { m_maincpu->set_input_line(M6502_NMI_LINE, newval ? ASSERT_LINE : CLEAR_LINE); update_reset(); }
- void update_reset();
-
- // machine configs
- void arb(machine_config &config);
- void v2(machine_config &config);
-
-protected:
- virtual void machine_start() override;
-
-private:
- // devices/pointers
- required_device<cpu_device> m_maincpu;
- required_device<pwm_display_device> m_display;
- required_device<sensorboard_device> m_board;
- required_device<via6522_device> m_via;
- memory_share_creator<u8> m_extram;
- required_device<dac_bit_interface> m_dac;
- optional_device<generic_slot_device> m_cart;
- required_ioport_array<2> m_inputs;
-
- // address maps
- void main_map(address_map &map);
- void v2_map(address_map &map);
-
- // cartridge
- DECLARE_DEVICE_IMAGE_LOAD_MEMBER(cart_load);
- u8 cartridge_r(offs_t offset);
- u32 m_cart_mask;
-
- // I/O handlers
- void update_display();
- void leds_w(u8 data);
- void control_w(u8 data);
- u8 input_r();
-
- u16 m_inp_mux = 0;
- u16 m_led_select = 0;
- u8 m_led_group = 0;
- u8 m_led_latch = 0;
- u16 m_led_data = 0;
-};
-
-void arb_state::machine_start()
-{
- // register for savestates
- save_item(NAME(m_inp_mux));
- save_item(NAME(m_led_select));
- save_item(NAME(m_led_group));
- save_item(NAME(m_led_latch));
- save_item(NAME(m_led_data));
-}
-
-void arb_state::update_reset()
-{
- bool state = m_inputs[1]->read() == 3;
-
- // RESET goes to 6502+6522
- m_maincpu->set_input_line(INPUT_LINE_RESET, state ? ASSERT_LINE : CLEAR_LINE);
- if (state)
- m_via->reset();
-}
-
-
-
-/******************************************************************************
- I/O
-******************************************************************************/
-
-// cartridge
-
-DEVICE_IMAGE_LOAD_MEMBER(arb_state::cart_load)
-{
- u32 size = m_cart->common_get_size("rom");
- m_cart_mask = ((1 << (31 - count_leading_zeros(size))) - 1) & 0x7fff;
-
- m_cart->rom_alloc(size, GENERIC_ROM8_WIDTH, ENDIANNESS_LITTLE);
- m_cart->common_load_rom(m_cart->get_rom_base(), size, "rom");
-
- // extra ram (optional)
- if (image.get_feature("ram"))
- m_maincpu->space(AS_PROGRAM).install_ram(0x0800, 0x0fff, 0x1000, m_extram);
-
- return image_init_result::PASS;
-}
-
-u8 arb_state::cartridge_r(offs_t offset)
-{
- return m_cart->read_rom(offset & m_cart_mask);
-}
-
-
-// R6522 ports
-
-void arb_state::update_display()
-{
- // 12 led column data lines via 3 7475
- u16 mask = 0;
- mask |= (m_led_group & 1) ? 0xf00 : 0;
- mask |= (m_led_group & 2) ? 0x0ff : 0;
-
- m_led_data = (m_led_data & ~mask) | ((m_led_latch << 8 | m_led_latch) & mask);
- m_display->matrix(m_led_select | 0x200, m_led_data);
-}
-
-void arb_state::leds_w(u8 data)
-{
- // PA0-PA7: led latch input
- m_led_latch = ~data & 0xff;
- update_display();
-}
-
-void arb_state::control_w(u8 data)
-{
- // PB0-PB3: 74145 A-D
- // 74145 0-8: input mux, led row select
- m_inp_mux = data & 0xf;
- m_led_select = 1 << (data & 0xf) & 0x1ff;
-
- // PB4,PB5: led group select
- m_led_group = data >> 4 & 3;
- update_display();
-
- // PB7: speaker out
- m_dac->write(BIT(data, 7));
-}
-
-u8 arb_state::input_r()
-{
- u8 data = 0;
-
- // PA0-PA7: multiplexed inputs
- if (m_inp_mux < 8)
- data = m_board->read_file(m_inp_mux);
- else if (m_inp_mux < 9)
- data = m_inputs[m_inp_mux - 8]->read();
-
- return ~data;
-}
-
-
-
-/******************************************************************************
- Address Maps
-******************************************************************************/
-
-void arb_state::main_map(address_map &map)
-{
- // external slot is A0-A14, potential bus conflict with RAM/VIA
- map(0x0000, 0x7fff).mirror(0x8000).r(FUNC(arb_state::cartridge_r));
- map(0x0000, 0x07ff).mirror(0x1000).ram().share("nvram");
- map(0x8000, 0x800f).mirror(0x1ff0).m(m_via, FUNC(via6522_device::map));
-}
-
-void arb_state::v2_map(address_map &map)
-{
- map(0x0000, 0x7fff).ram().share("nvram"); // BS62LV256
- map(0x8000, 0x800f).mirror(0x1ff0).m(m_via, FUNC(via6522_device::map));
- map(0xa000, 0xffff).rom();
-}
-
-
-
-/******************************************************************************
- Input Ports
-******************************************************************************/
-
-static INPUT_PORTS_START( arb )
- PORT_START("IN.0")
- PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_H) PORT_CODE(KEYCODE_7) PORT_NAME("Hint / Black")
- PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_V) PORT_CODE(KEYCODE_6) PORT_NAME("Variable / Clear / White / 6")
- PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_M) PORT_CODE(KEYCODE_5) PORT_NAME("Monitor / Take Back / King / 5")
- PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_S) PORT_CODE(KEYCODE_4) PORT_NAME("Self Play / Verify / Queen / 4")
- PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_B) PORT_CODE(KEYCODE_3) PORT_NAME("Change Board / Rook / 3")
- PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_C) PORT_CODE(KEYCODE_2) PORT_NAME("Change Color / Bishop / 2")
- PORT_BIT(0x40, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_L) PORT_CODE(KEYCODE_1) PORT_NAME("Change Level / Knight / 1")
- PORT_BIT(0x80, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_N) PORT_CODE(KEYCODE_0) PORT_NAME("New Game / Options / Pawn / 0")
-
- PORT_START("IN.1")
- PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYPAD ) PORT_CODE(KEYCODE_R) PORT_CODE(KEYCODE_F1) PORT_NAME("Reset") PORT_CHANGED_MEMBER(DEVICE_SELF, arb_state, reset_button, 0)
- PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYPAD ) PORT_CODE(KEYCODE_T) PORT_CODE(KEYCODE_F1) PORT_NAME("Halt") PORT_CHANGED_MEMBER(DEVICE_SELF, arb_state, halt_button, 0)
-INPUT_PORTS_END
-
-
-
-/******************************************************************************
- Machine Configs
-******************************************************************************/
-
-void arb_state::v2(machine_config &config)
-{
- /* basic machine hardware */
- M65C02(config, m_maincpu, 16_MHz_XTAL); // W65C02S6TPG-14
- m_maincpu->set_addrmap(AS_PROGRAM, &arb_state::v2_map);
-
- W65C22S(config, m_via, 16_MHz_XTAL); // W65C22S6TPG-14
- m_via->writepa_handler().set(FUNC(arb_state::leds_w));
- m_via->writepb_handler().set(FUNC(arb_state::control_w));
- m_via->readpa_handler().set(FUNC(arb_state::input_r));
- m_via->irq_handler().set_inputline(m_maincpu, M6502_IRQ_LINE);
-
- NVRAM(config, "nvram", nvram_device::DEFAULT_ALL_0);
-
- SENSORBOARD(config, m_board).set_type(sensorboard_device::MAGNETS);
- m_board->init_cb().set(m_board, FUNC(sensorboard_device::preset_chess));
- m_board->set_delay(attotime::from_msec(100));
-
- /* video hardware */
- PWM_DISPLAY(config, m_display).set_size(9+1, 12);
- config.set_default_layout(layout_ave_arb);
-
- /* sound hardware */
- SPEAKER(config, "speaker").front_center();
- DAC_1BIT(config, m_dac).add_route(ALL_OUTPUTS, "speaker", 0.25);
-}
-
-void arb_state::arb(machine_config &config)
-{
- v2(config);
-
- /* basic machine hardware */
- M6502(config.replace(), m_maincpu, 4_MHz_XTAL/2); // R6502P
- m_maincpu->set_addrmap(AS_PROGRAM, &arb_state::main_map);
-
- MOS6522(config.replace(), m_via, 4_MHz_XTAL/4); // R6522P
- m_via->writepa_handler().set(FUNC(arb_state::leds_w));
- m_via->writepb_handler().set(FUNC(arb_state::control_w));
- m_via->readpa_handler().set(FUNC(arb_state::input_r));
- m_via->irq_handler().set_inputline(m_maincpu, M6502_IRQ_LINE);
-
- /* cartridge */
- GENERIC_CARTSLOT(config, m_cart, generic_plain_slot, "arb");
- m_cart->set_device_load(FUNC(arb_state::cart_load));
- m_cart->set_must_be_loaded(true);
-
- SOFTWARE_LIST(config, "cart_list").set_original("arb");
-}
-
-
-
-/******************************************************************************
- ROM Definitions
-******************************************************************************/
-
-ROM_START( arb )
- ROM_REGION( 0x10000, "maincpu", ROMREGION_ERASE00 )
- // none here, it's in the module slot
-ROM_END
-
-ROM_START( arbv2 )
- ROM_REGION( 0x10000, "maincpu", 0 )
- ROM_LOAD( "sargon_4.0", 0x0000, 0x10000, CRC(c519c9e8) SHA1(d7597d50c0f4f9aa6d990c8d3b485e39cb44ff06) ) // AT27C512R
-ROM_END
-
-} // anonymous namespace
-
-
-
-/******************************************************************************
- Drivers
-******************************************************************************/
-
-/* YEAR NAME PARENT CMP MACHINE INPUT CLASS INIT COMPANY, FULLNAME, FLAGS */
-CONS( 1980, arb, 0, 0, arb, arb, arb_state, empty_init, "AVE Micro Systems", "Auto Response Board", MACHINE_SUPPORTS_SAVE | MACHINE_CLICKABLE_ARTWORK )
-CONS( 2012, arbv2, arb, 0, v2, arb, arb_state, empty_init, "hack (Steve Braid)", "ARB V2 Sargon 4.0", MACHINE_SUPPORTS_SAVE | MACHINE_CLICKABLE_ARTWORK )