diff options
Diffstat (limited to 'src/mame/drivers/junior.c')
-rw-r--r-- | src/mame/drivers/junior.c | 259 |
1 files changed, 259 insertions, 0 deletions
diff --git a/src/mame/drivers/junior.c b/src/mame/drivers/junior.c new file mode 100644 index 00000000000..d40101213d6 --- /dev/null +++ b/src/mame/drivers/junior.c @@ -0,0 +1,259 @@ +// license:??? +// copyright-holders:Robbbert, Manfred Schneider +/*************************************************************************** + + Elektor Junior + + 17/07/2009 Skeleton driver. + +This is heavily based on the KIM-1, the keycodes and operation being +identical. + +Pasting: + 0-F : as is + + (inc) : ^ + AD : - + DA : = + GO : X + +(note: DA only works when addressing RAM) + +Test Paste: + =11^22^33^44^55^66^77^88^99^-0000 + Now press up-arrow to confirm the data has been entered. + +****************************************************************************/ + +#include "emu.h" +#include "cpu/m6502/m6502.h" +#include "machine/mos6530n.h" +#include "junior.lh" + + +class junior_state : public driver_device +{ +public: + junior_state(const machine_config &mconfig, device_type type, const char *tag) + : driver_device(mconfig, type, tag), + m_riot(*this, "riot") + , + m_maincpu(*this, "maincpu") { } + + required_device<mos6532_t> m_riot; + DECLARE_READ8_MEMBER(junior_riot_a_r); + DECLARE_READ8_MEMBER(junior_riot_b_r); + DECLARE_WRITE8_MEMBER(junior_riot_a_w); + DECLARE_WRITE8_MEMBER(junior_riot_b_w); + DECLARE_WRITE_LINE_MEMBER(junior_riot_irq); + UINT8 m_port_a; + UINT8 m_port_b; + UINT8 m_led_time[6]; + virtual void machine_start(); + virtual void machine_reset(); + DECLARE_INPUT_CHANGED_MEMBER(junior_reset); + TIMER_DEVICE_CALLBACK_MEMBER(junior_update_leds); + required_device<cpu_device> m_maincpu; +}; + + + + +static ADDRESS_MAP_START(junior_mem, AS_PROGRAM, 8, junior_state) + ADDRESS_MAP_GLOBAL_MASK(0x1FFF) + ADDRESS_MAP_UNMAP_HIGH + AM_RANGE(0x0000, 0x03ff) AM_RAM // 1K RAM + AM_RANGE(0x1a00, 0x1a7f) AM_DEVICE("riot", mos6532_t, ram_map) + AM_RANGE(0x1a80, 0x1a9f) AM_DEVICE("riot", mos6532_t, io_map) + AM_RANGE(0x1c00, 0x1fff) AM_ROM // Monitor +ADDRESS_MAP_END + + +INPUT_CHANGED_MEMBER(junior_state::junior_reset) +{ + if (newval == 0) + m_maincpu->reset(); +} + + +/* Input ports */ +static INPUT_PORTS_START( junior ) +PORT_START("LINE0") /* IN0 keys row 0 */ + PORT_BIT( 0x80, 0x00, IPT_UNUSED ) + PORT_BIT( 0x40, 0x40, IPT_KEYBOARD ) PORT_NAME("0") PORT_CODE(KEYCODE_0) PORT_CHAR('0') + PORT_BIT( 0x20, 0x20, IPT_KEYBOARD ) PORT_NAME("1") PORT_CODE(KEYCODE_1) PORT_CHAR('1') + PORT_BIT( 0x10, 0x10, IPT_KEYBOARD ) PORT_NAME("2") PORT_CODE(KEYCODE_2) PORT_CHAR('2') + PORT_BIT( 0x08, 0x08, IPT_KEYBOARD ) PORT_NAME("3") PORT_CODE(KEYCODE_3) PORT_CHAR('3') + PORT_BIT( 0x04, 0x04, IPT_KEYBOARD ) PORT_NAME("4") PORT_CODE(KEYCODE_4) PORT_CHAR('4') + PORT_BIT( 0x02, 0x02, IPT_KEYBOARD ) PORT_NAME("5") PORT_CODE(KEYCODE_5) PORT_CHAR('5') + PORT_BIT( 0x01, 0x01, IPT_KEYBOARD ) PORT_NAME("6") PORT_CODE(KEYCODE_6) PORT_CHAR('6') + + PORT_START("LINE1") /* IN1 keys row 1 */ + PORT_BIT( 0x80, 0x00, IPT_UNUSED ) + PORT_BIT( 0x40, 0x40, IPT_KEYBOARD ) PORT_NAME("7") PORT_CODE(KEYCODE_7) PORT_CHAR('7') + PORT_BIT( 0x20, 0x20, IPT_KEYBOARD ) PORT_NAME("8") PORT_CODE(KEYCODE_8) PORT_CHAR('8') + PORT_BIT( 0x10, 0x10, IPT_KEYBOARD ) PORT_NAME("9") PORT_CODE(KEYCODE_9) PORT_CHAR('9') + PORT_BIT( 0x08, 0x08, IPT_KEYBOARD ) PORT_NAME("A") PORT_CODE(KEYCODE_A) PORT_CHAR('A') + PORT_BIT( 0x04, 0x04, IPT_KEYBOARD ) PORT_NAME("B") PORT_CODE(KEYCODE_B) PORT_CHAR('B') + PORT_BIT( 0x02, 0x02, IPT_KEYBOARD ) PORT_NAME("C") PORT_CODE(KEYCODE_C) PORT_CHAR('C') + PORT_BIT( 0x01, 0x01, IPT_KEYBOARD ) PORT_NAME("D") PORT_CODE(KEYCODE_D) PORT_CHAR('D') + + PORT_START("LINE2") /* IN2 keys row 2 */ + PORT_BIT( 0x80, 0x00, IPT_UNUSED ) + PORT_BIT( 0x40, 0x40, IPT_KEYBOARD ) PORT_NAME("E") PORT_CODE(KEYCODE_E) PORT_CHAR('E') + PORT_BIT( 0x20, 0x20, IPT_KEYBOARD ) PORT_NAME("F") PORT_CODE(KEYCODE_F) PORT_CHAR('F') + PORT_BIT( 0x10, 0x10, IPT_KEYBOARD ) PORT_NAME("AD") PORT_CODE(KEYCODE_MINUS) PORT_CHAR('-') + PORT_BIT( 0x08, 0x08, IPT_KEYBOARD ) PORT_NAME("DA") PORT_CODE(KEYCODE_EQUALS) PORT_CHAR('=') + PORT_BIT( 0x04, 0x04, IPT_KEYBOARD ) PORT_NAME("+") PORT_CODE(KEYCODE_UP) PORT_CHAR('^') + PORT_BIT( 0x02, 0x02, IPT_KEYBOARD ) PORT_NAME("GO") PORT_CODE(KEYCODE_X) PORT_CHAR('X') + PORT_BIT( 0x01, 0x01, IPT_KEYBOARD ) PORT_NAME("PC") PORT_CODE(KEYCODE_F6) + + PORT_START("LINE3") /* IN3 STEP and RESET keys, MODE switch */ + PORT_BIT( 0x80, 0x00, IPT_UNUSED ) + PORT_BIT( 0x40, 0x40, IPT_KEYBOARD ) PORT_NAME("sw1: ST") PORT_CODE(KEYCODE_F7) + PORT_BIT( 0x20, 0x20, IPT_KEYBOARD ) PORT_NAME("sw2: RST") PORT_CODE(KEYCODE_F3) PORT_CHANGED_MEMBER(DEVICE_SELF, junior_state, junior_reset, NULL) + PORT_DIPNAME(0x10, 0x10, "sw3: SS (NumLock)") PORT_CODE(KEYCODE_NUMLOCK) PORT_TOGGLE + PORT_DIPSETTING( 0x00, "single step") + PORT_DIPSETTING( 0x10, "run") + PORT_BIT( 0x08, 0x00, IPT_UNUSED ) + PORT_BIT( 0x04, 0x00, IPT_UNUSED ) + PORT_BIT( 0x02, 0x00, IPT_UNUSED ) + PORT_BIT( 0x01, 0x00, IPT_UNUSED ) +INPUT_PORTS_END + + + +READ8_MEMBER( junior_state::junior_riot_a_r ) +{ + UINT8 data = 0xff; + + switch( ( m_port_b >> 1 ) & 0x0f ) + { + case 0: + data = ioport("LINE0")->read(); + break; + case 1: + data = ioport("LINE1")->read(); + break; + case 2: + data = ioport("LINE2")->read(); + break; + } + return data; + +} + + +READ8_MEMBER( junior_state::junior_riot_b_r ) +{ + if ( m_port_b & 0x20 ) + return 0xFF; + + return 0x7F; + +} + + +WRITE8_MEMBER( junior_state::junior_riot_a_w ) +{ + UINT8 idx = ( m_port_b >> 1 ) & 0x0f; + + m_port_a = data; + + if ((idx >= 4 && idx < 10) & ( m_port_a != 0xff )) + { + output_set_digit_value( idx-4, m_port_a ^ 0x7f ); + m_led_time[idx - 4] = 10; + } +} + + +WRITE8_MEMBER( junior_state::junior_riot_b_w ) +{ + UINT8 idx = ( data >> 1 ) & 0x0f; + + m_port_b = data; + + if ((idx >= 4 && idx < 10) & ( m_port_a != 0xff )) + { + output_set_digit_value( idx-4, m_port_a ^ 0x7f ); + m_led_time[idx - 4] = 10; + } +} + + +WRITE_LINE_MEMBER( junior_state::junior_riot_irq ) +{ + m_maincpu->set_input_line(M6502_IRQ_LINE, state ? HOLD_LINE : CLEAR_LINE); +} + + +TIMER_DEVICE_CALLBACK_MEMBER(junior_state::junior_update_leds) +{ + int i; + + for ( i = 0; i < 6; i++ ) + { + if ( m_led_time[i] ) + m_led_time[i]--; + else + output_set_digit_value( i, 0 ); + } +} + + +void junior_state::machine_start() +{ + save_item(NAME(m_port_a)); + save_item(NAME(m_port_b)); +} + + +void junior_state::machine_reset() +{ + int i; + + for ( i = 0; i < 6; i++ ) + m_led_time[i] = 0; +} + + +static MACHINE_CONFIG_START( junior, junior_state ) + /* basic machine hardware */ + MCFG_CPU_ADD("maincpu",M6502, XTAL_1MHz) + MCFG_CPU_PROGRAM_MAP(junior_mem) + MCFG_QUANTUM_TIME(attotime::from_hz(50)) + + /* video hardware */ + MCFG_DEFAULT_LAYOUT( layout_junior ) + + /* Devices */ + MCFG_DEVICE_ADD("riot", MOS6532n, XTAL_1MHz) + MCFG_MOS6530n_IN_PA_CB(READ8(junior_state, junior_riot_a_r)) + MCFG_MOS6530n_OUT_PA_CB(WRITE8(junior_state, junior_riot_a_w)) + MCFG_MOS6530n_IN_PB_CB(READ8(junior_state, junior_riot_b_r)) + MCFG_MOS6530n_OUT_PB_CB(WRITE8(junior_state, junior_riot_b_w)) + MCFG_MOS6530n_IRQ_CB(WRITELINE(junior_state, junior_riot_irq)) + + MCFG_TIMER_DRIVER_ADD_PERIODIC("led_timer", junior_state, junior_update_leds, attotime::from_hz(50)) +MACHINE_CONFIG_END + + +/* ROM definition */ +ROM_START( junior ) + ROM_REGION( 0x10000, "maincpu", ROMREGION_ERASEFF ) + ROM_DEFAULT_BIOS("orig") + + ROM_SYSTEM_BIOS( 0, "orig", "Original ESS503" ) + ROMX_LOAD( "ess503.ic2", 0x1c00, 0x0400, CRC(9e804f8c) SHA1(181bdb69fb4711cb008e7966747d4775a5e3ef69), ROM_BIOS(1)) + + ROM_SYSTEM_BIOS( 1, "mod-orig", "Mod-Original (2708)" ) + ROMX_LOAD( "junior-mod.ic2", 0x1c00, 0x0400, CRC(ee8aa69d) SHA1(a132a51603f1a841c354815e6d868b335ac84364), ROM_BIOS(2)) + + ROM_SYSTEM_BIOS( 2, "2732", "Just monitor (2732)" ) + ROMX_LOAD( "junior27321a.ic2", 0x1c00, 0x0400, CRC(e22f24cc) SHA1(a6edb52a9eea5e99624c128065e748e5a3fb2e4c), ROM_BIOS(3)) +ROM_END + +/* Driver */ + +/* YEAR NAME PARENT COMPAT MACHINE INPUT INIT COMPANY FULLNAME FLAGS */ +COMP( 1980, junior, 0, 0, junior, junior, driver_device, 0, "Elektor Electronics", "Junior Computer", MACHINE_SUPPORTS_SAVE | MACHINE_NO_SOUND_HW) |