// license:BSD-3-Clause // copyright-holders:Miodrag Milanovic, Robbbert /************************************************************************************************************************************** Intel MCS-85 System Design Kit (SDK-85) 09/12/2009 Skeleton driver. 22/06/2011 Working [Robbbert] This is an evaluation kit for the 8085 cpu. All onboard RAM and (P)ROM is contained within address-latched Intel memories with built-in I/O (8155 and 8355/8755/8755A). There is no speaker or storage facility in the standard kit. Download the User Manual to get the operating procedures. An example is Press SUBST key, enter an address, press NEXT key, enter data, then press NEXT to increment the address. ToDo: - Artwork Notes on Mastermind bios. Original author: Paolo Forlani Ported to SDK85 by: Stefano Bodrato Game instructions (from Stefano): Start up, press 0 to begin. Game shows ----. You need to guess a number between 0000 and 9999. Enter your guess, "computer" will answer showing on left with the number of found digits. On the right you'll get a "clue", slightly different than on the standard game (making it a bit more tricky and more intriguing). Once you find the number, you'll see it flashing. Press the 2 key and you'll get your score (number of attempts before guessing). Press 0 to restart. *************************************************************************************************************************************/ #include "emu.h" #include "cpu/i8085/i8085.h" #include "machine/i8155.h" #include "machine/i8355.h" #include "machine/i8279.h" #include "sdk85.lh" class sdk85_state : public driver_device { public: sdk85_state(const machine_config &mconfig, device_type type, const char *tag) : driver_device(mconfig, type, tag) , m_maincpu(*this, "maincpu") , m_keyboard(*this, "X%u", 0) , m_digits(*this, "digit%u", 0U) { } void sdk85(machine_config &config); private: DECLARE_WRITE8_MEMBER(scanlines_w); DECLARE_WRITE8_MEMBER(digit_w); DECLARE_READ8_MEMBER(kbd_r); void sdk85_io(address_map &map); void sdk85_mem(address_map &map); u8 m_digit; virtual void machine_reset() override; virtual void machine_start() override { m_digits.resolve(); } required_device m_maincpu; required_ioport_array<3> m_keyboard; output_finder<6> m_digits; }; void sdk85_state::machine_reset() { // Prevent spurious TRAP when system is reset m_maincpu->reset(); } void sdk85_state::sdk85_mem(address_map &map) { map.unmap_value_high(); map(0x0000, 0x07ff).r("romio", FUNC(i8355_device::memory_r)); map(0x0800, 0x0fff).r("expromio", FUNC(i8355_device::memory_r)); map(0x1800, 0x1800).mirror(0x06ff).rw("kdc", FUNC(i8279_device::data_r), FUNC(i8279_device::data_w)); map(0x1900, 0x1900).mirror(0x06ff).rw("kdc", FUNC(i8279_device::status_r), FUNC(i8279_device::cmd_w)); map(0x2000, 0x20ff).mirror(0x0700).rw("ramio", FUNC(i8155_device::memory_r), FUNC(i8155_device::memory_w)); map(0x2800, 0x28ff).mirror(0x0700).rw("expramio", FUNC(i8155_device::memory_r), FUNC(i8155_device::memory_w)); } void sdk85_state::sdk85_io(address_map &map) { map.unmap_value_high(); map(0x00, 0x03).mirror(0x04).rw("romio", FUNC(i8355_device::io_r), FUNC(i8355_device::io_w)); map(0x08, 0x0b).mirror(0x04).rw("expromio", FUNC(i8355_device::io_r), FUNC(i8355_device::io_w)); map(0x20, 0x27).rw("ramio", FUNC(i8155_device::io_r), FUNC(i8155_device::io_w)); map(0x28, 0x2f).rw("expramio", FUNC(i8155_device::io_r), FUNC(i8155_device::io_w)); } /* Input ports */ static INPUT_PORTS_START( sdk85 ) PORT_START("X0") PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("0") PORT_CODE(KEYCODE_0) PORT_CHAR('0') PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("1") PORT_CODE(KEYCODE_1) PORT_CHAR('1') PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("2") PORT_CODE(KEYCODE_2) PORT_CHAR('2') PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("3") PORT_CODE(KEYCODE_3) PORT_CHAR('3') PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("4") PORT_CODE(KEYCODE_4) PORT_CHAR('4') PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("5") PORT_CODE(KEYCODE_5) PORT_CHAR('5') PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("6") PORT_CODE(KEYCODE_6) PORT_CHAR('6') PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("7") PORT_CODE(KEYCODE_7) PORT_CHAR('7') PORT_START("X1") PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("8") PORT_CODE(KEYCODE_8) PORT_CHAR('8') PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("9") PORT_CODE(KEYCODE_9) PORT_CHAR('9') PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("A") PORT_CODE(KEYCODE_A) PORT_CHAR('A') PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("B") PORT_CODE(KEYCODE_B) PORT_CHAR('B') PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("C") PORT_CODE(KEYCODE_C) PORT_CHAR('C') PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("D") PORT_CODE(KEYCODE_D) PORT_CHAR('D') PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("E") PORT_CODE(KEYCODE_E) PORT_CHAR('E') PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("F") PORT_CODE(KEYCODE_F) PORT_CHAR('F') PORT_START("X2") PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("EXEC") PORT_CODE(KEYCODE_Q) PORT_CHAR('Q') PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("NEXT") PORT_CODE(KEYCODE_UP) PORT_CHAR('^') PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("GO") PORT_CODE(KEYCODE_R) PORT_CHAR('R') PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("SUBST") PORT_CODE(KEYCODE_T) PORT_CHAR('T') PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("EXAM") PORT_CODE(KEYCODE_Y) PORT_CHAR('Y') PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("SINGLE") PORT_CODE(KEYCODE_U) PORT_CHAR('U') PORT_BIT(0xC0, IP_ACTIVE_LOW, IPT_UNUSED) INPUT_PORTS_END WRITE8_MEMBER( sdk85_state::scanlines_w ) { m_digit = data; } WRITE8_MEMBER( sdk85_state::digit_w ) { if (m_digit < 6) m_digits[m_digit] = bitswap<8>(~data, 3, 2, 1, 0, 7, 6, 5, 4); } READ8_MEMBER( sdk85_state::kbd_r ) { u8 data = (m_digit < 3) ? m_keyboard[m_digit]->read() : 0xff; return data; } void sdk85_state::sdk85(machine_config &config) { /* basic machine hardware */ I8085A(config, m_maincpu, 6.144_MHz_XTAL); m_maincpu->set_addrmap(AS_PROGRAM, &sdk85_state::sdk85_mem); m_maincpu->set_addrmap(AS_IO, &sdk85_state::sdk85_io); I8355(config, "romio", 6.144_MHz_XTAL / 2); // Monitor ROM (A14) I8355(config, "expromio", 6.144_MHz_XTAL / 2); // Expansion ROM (A15) i8155_device &i8155(I8155(config, "ramio", 6.144_MHz_XTAL / 2)); // Basic RAM (A16) i8155.out_to_callback().set_inputline(m_maincpu, I8085_TRAP_LINE); I8155(config, "expramio", 6.144_MHz_XTAL / 2); // Expansion RAM (A17) /* video hardware */ config.set_default_layout(layout_sdk85); /* Devices */ i8279_device &kdc(I8279(config, "kdc", 6.144_MHz_XTAL / 2)); // Keyboard/Display Controller (A13) kdc.out_irq_callback().set_inputline("maincpu", I8085_RST55_LINE); // irq kdc.out_sl_callback().set(FUNC(sdk85_state::scanlines_w)); // scan SL lines kdc.out_disp_callback().set(FUNC(sdk85_state::digit_w)); // display A&B kdc.in_rl_callback().set(FUNC(sdk85_state::kbd_r)); // kbd RL lines kdc.in_shift_callback().set_constant(1); // Shift key kdc.in_ctrl_callback().set_constant(1); } /* ROM definition */ ROM_START( sdk85 ) ROM_REGION( 0x800, "romio", ROMREGION_ERASEFF ) ROM_SYSTEM_BIOS(0, "default", "Default") ROMX_LOAD( "sdk85.a14", 0x0000, 0x0800, CRC(9d5a983f) SHA1(54e218560fbec009ac3de5cfb64b920241ef2eeb), ROM_BIOS(0) ) ROM_SYSTEM_BIOS(1, "mastermind", "Mastermind") ROMX_LOAD( "mastermind.a14", 0x0000, 0x0800, CRC(36b694ae) SHA1(4d8a5ae5d10e8f72a6e349c7eeaf1aa00c4e45e1), ROM_BIOS(1) ) ROM_REGION( 0x800, "expromio", ROMREGION_ERASEFF ) ROM_END /* Driver */ /* YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS */ COMP( 1977, sdk85, 0, 0, sdk85, sdk85, sdk85_state, empty_init, "Intel", "MCS-85 System Design Kit", MACHINE_NO_SOUND_HW)