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Diffstat (limited to 'src/mame/drivers/datum.cpp')
-rw-r--r-- | src/mame/drivers/datum.cpp | 228 |
1 files changed, 0 insertions, 228 deletions
diff --git a/src/mame/drivers/datum.cpp b/src/mame/drivers/datum.cpp deleted file mode 100644 index a49a560fe80..00000000000 --- a/src/mame/drivers/datum.cpp +++ /dev/null @@ -1,228 +0,0 @@ -// license:BSD-3-Clause -// copyright-holders:Robbbert -/********************************************************************************************** - -Gammatron Datum (1982) - -2016-10-28. - -Described in Electronics Australia magazine in 1982/1983. - -- The ROM was keyed in by hand from a printout, so is therefore considered a bad dump. -- It has routines for adc, dac, cassette, but there's no hardware to support these. -- The basic machine is fully emulated as per the schematic. - -Memory Map: -0000-007F = RAM inside the cpu -1000-13FF = RAM (2x 2114) -3E00-3E01 = ADC (in monitor as EQU but not further referenced) not in schematic -3F00-3F01 = 10-bit DAC (supported in monitor with routines for the user) not in schematic -4000-4001 = ACIA (in monitor for cassette usage, but schematic shows it for rs232) - Schematic has no provision of baud clocks -5000-5003 = PIA2 for expansion, monitor does not use it at all. -6000-6003 = PIA1 for keyboard and display -7000-77FF = ROM - -Note about the acia6850: The monitor sends it a master reset, then ignores it thereafter. - None of the pins are connected to anything - including the clocks. - It's up to the owner to write a TTY interface, and wire it up. - -Sample program to paste in: Pick-up-sticks (Nim) All inputs are in HEX. -1. Paste this in -2. Enter number of sticks to begin with (2 digits) -3. Enter max number of sticks to be removed per turn (1 digit) -4. Your turn - remove some sticks -5. After a pause, player's turn. -6. Keep doing steps 4 and 5 till you lose (it says 10b3 3F) -7. When tested, the game seems buggy - prepare to lose sooner than expected - -1000M -BD^71^07^CE^00^10^86^7E^A7^01^A7^05^BD^71^5E^B7^12^00^BD^72^7D^97^10^BD^71^5E^ -B7^12^01^BD^72^7D^97^11^CE^12^00^BD^72^4D^B7^12^00^BD^71^5E^B7^12^02^BD^72^7D^ -97^15^BD^71^5E^B7^12^03^27^08^7C^12^02^B1^12^02^2B^18^CE^00^10^86^06^97^12^ -86^15^97^13^8D^61^CE^00^10^86^7F^A7^02^A7^03^20^D8^B6^12^00^B0^12^03^B7^12^00^ -BD^72^6E^D7^10^97^11^8D^44^B6^12^00^4A^27^3C^7F^12^05^7C^12^02^7C^12^05^ -B0^12^02^2E^F8^7A^12^05^5F^FB^12^02^7A^12^05^26^F8^B6^12^00^10^16^5A^ -26^02^C6^01^B6^12^00^10^B7^12^00^BD^72^6E^D7^10^97^11^B6^12^00^81^01^27^04^ -7E^10^36^3F^3F^86^80^B7^12^04^BD^71^DD^7A^12^04^26^F8^39^ -Z1000G - - -*******************************************************************************************/ - -#include "emu.h" -#include "cpu/m6800/m6800.h" -#include "machine/6821pia.h" -#include "machine/6850acia.h" -#include "bus/rs232/rs232.h" -#include "datum.lh" - - -class datum_state : public driver_device -{ -public: - datum_state(const machine_config &mconfig, device_type type, const char *tag) - : driver_device(mconfig, type, tag) - , m_pia1(*this, "pia1") - , m_pia2(*this, "pia2") - , m_acia(*this, "acia") - , m_keyboard(*this, "X%u", 0) - , m_maincpu(*this, "maincpu") - , m_digits(*this, "digit%u", 0U) - { } - - void datum(machine_config &config); - DECLARE_INPUT_CHANGED_MEMBER(trigger_reset); - DECLARE_INPUT_CHANGED_MEMBER(trigger_nmi); - -private: - DECLARE_READ8_MEMBER(pa_r); - DECLARE_WRITE8_MEMBER(pa_w); - DECLARE_WRITE8_MEMBER(pb_w); - void datum_mem(address_map &map); - uint8_t m_keydata; - virtual void machine_reset() override; - virtual void machine_start() override { m_digits.resolve(); } - required_device<pia6821_device> m_pia1; - required_device<pia6821_device> m_pia2; - required_device<acia6850_device> m_acia; - required_ioport_array<4> m_keyboard; - required_device<cpu_device> m_maincpu; - output_finder<16> m_digits; -}; - - -void datum_state::datum_mem(address_map &map) -{ - map.unmap_value_high(); - map(0x1000, 0x13ff).mirror(0x8c00).ram(); // main ram 2x 2114 - map(0x4000, 0x4001).mirror(0x8ffe).rw(m_acia, FUNC(acia6850_device::read), FUNC(acia6850_device::write)); - map(0x5000, 0x5003).mirror(0x8ffc).rw(m_pia2, FUNC(pia6821_device::read), FUNC(pia6821_device::write)); - map(0x6000, 0x6003).mirror(0x8ffc).rw(m_pia1, FUNC(pia6821_device::read), FUNC(pia6821_device::write)); - map(0x7000, 0x77ff).mirror(0x8800).rom().region("roms", 0); -} - - -/* Input ports */ -static INPUT_PORTS_START( datum ) - PORT_START("X0") - PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_D) PORT_CHAR('D') - PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_E) PORT_CHAR('E') - PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_F) PORT_CHAR('F') - PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_0) PORT_CHAR('0') - PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("2F") PORT_CODE(KEYCODE_S) PORT_CHAR('S') // "Second Function" i.e Shift-lock - PORT_BIT( 0xe0, IP_ACTIVE_LOW, IPT_UNUSED ) - - PORT_START("X1") - PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_C) PORT_CHAR('C') - PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_9) PORT_CHAR('9') - PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_8) PORT_CHAR('8') - PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_7) PORT_CHAR('7') - PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("M/R") PORT_CODE(KEYCODE_M) PORT_CHAR('M') // "Memory / Registers" - PORT_BIT( 0xe0, IP_ACTIVE_LOW, IPT_UNUSED ) - - PORT_START("X2") - PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_B) PORT_CHAR('B') - PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_6) PORT_CHAR('6') - PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_5) PORT_CHAR('5') - PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_4) PORT_CHAR('4') - PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("I/D") PORT_CODE(KEYCODE_UP) PORT_CHAR('^') // "Increment / Decrement" - PORT_BIT( 0xe0, IP_ACTIVE_LOW, IPT_UNUSED ) - - PORT_START("X3") - PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_A) PORT_CHAR('A') - PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_3) PORT_CHAR('3') - PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_2) PORT_CHAR('2') - PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_1) PORT_CHAR('1') - PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("G/S") PORT_CODE(KEYCODE_G) PORT_CHAR('G') // "Goto / Single-step" - PORT_BIT( 0xe0, IP_ACTIVE_LOW, IPT_UNUSED ) - - PORT_START("SPECIAL") - PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("Reset") PORT_CODE(KEYCODE_F3) PORT_CHANGED_MEMBER(DEVICE_SELF, datum_state, trigger_reset, 0) - PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("Escape") PORT_CODE(KEYCODE_ESC) PORT_CHAR('Z') PORT_CHANGED_MEMBER(DEVICE_SELF, datum_state, trigger_nmi, 0) -INPUT_PORTS_END - -INPUT_CHANGED_MEMBER( datum_state::trigger_reset ) -{ - m_maincpu->set_input_line(INPUT_LINE_RESET, newval ? CLEAR_LINE : ASSERT_LINE); -} - -INPUT_CHANGED_MEMBER( datum_state::trigger_nmi ) -{ - m_maincpu->set_input_line(INPUT_LINE_NMI, newval ? CLEAR_LINE : ASSERT_LINE); -} - - -void datum_state::machine_reset() -{ - m_keydata = 0; -} - -// read keyboard -READ8_MEMBER( datum_state::pa_r ) -{ - if (m_keydata < 4) - return m_keyboard[m_keydata]->read(); - - return 0xff; -} - -// write display segments -WRITE8_MEMBER( datum_state::pa_w ) -{ - data ^= 0xff; - if (m_keydata > 3) - { - m_digits[m_keydata] = bitswap<8>(data & 0x7f, 7, 0, 5, 6, 4, 2, 1, 3); - m_keydata = 0; - } - - return; -} - -// select keyboard row, select a digit -WRITE8_MEMBER( datum_state::pb_w ) -{ - m_keydata = bitswap<8>(data, 7, 6, 5, 4, 0, 1, 2, 3) & 15; - return; -} - - -void datum_state::datum(machine_config &config) -{ - /* basic machine hardware */ - M6802(config, m_maincpu, XTAL(4'000'000)); // internally divided to 1 MHz - m_maincpu->set_addrmap(AS_PROGRAM, &datum_state::datum_mem); - - /* video hardware */ - config.set_default_layout(layout_datum); - - /* Devices */ - PIA6821(config, m_pia1, 0); // keyboard & display - m_pia1->readpa_handler().set(FUNC(datum_state::pa_r)); - m_pia1->writepa_handler().set(FUNC(datum_state::pa_w)); - m_pia1->writepb_handler().set(FUNC(datum_state::pb_w)); - m_pia1->irqa_handler().set_inputline("maincpu", M6802_IRQ_LINE); - m_pia1->irqb_handler().set_inputline("maincpu", M6802_IRQ_LINE); - - PIA6821(config, m_pia2, 0); // expansion - m_pia2->irqa_handler().set_inputline("maincpu", M6802_IRQ_LINE); - m_pia2->irqb_handler().set_inputline("maincpu", M6802_IRQ_LINE); - - ACIA6850(config, m_acia, 0); // rs232 - m_acia->txd_handler().set("rs232", FUNC(rs232_port_device::write_txd)); - m_acia->rts_handler().set("rs232", FUNC(rs232_port_device::write_rts)); - rs232_port_device &rs232(RS232_PORT(config, "rs232", default_rs232_devices, nullptr)); - rs232.rxd_handler().set(m_acia, FUNC(acia6850_device::write_rxd)); - rs232.cts_handler().set(m_acia, FUNC(acia6850_device::write_cts)); -} - - -/* ROM definition */ -ROM_START( datum ) - ROM_REGION( 0x800, "roms", 0 ) - ROM_LOAD( "datum.bin", 0x0000, 0x0800, BAD_DUMP CRC(6fb11628) SHA1(8a77a846b62eee0d12848da76e16b4c66ef445d8) ) -ROM_END - -// YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS -COMP( 1982, datum, 0, 0, datum, datum, datum_state, empty_init, "Gammatron", "Datum", MACHINE_NO_SOUND_HW ) |