diff options
Diffstat (limited to 'src/mame/drivers/mc1502.cpp')
-rw-r--r-- | src/mame/drivers/mc1502.cpp | 60 |
1 files changed, 32 insertions, 28 deletions
diff --git a/src/mame/drivers/mc1502.cpp b/src/mame/drivers/mc1502.cpp index b62b15481ae..abb22a65c03 100644 --- a/src/mame/drivers/mc1502.cpp +++ b/src/mame/drivers/mc1502.cpp @@ -2,9 +2,9 @@ // copyright-holders:Sergey Svishchev /*************************************************************************** - drivers/mc1502.c + drivers/mc1502.c - Driver file for Electronika MC 1502 + Driver file for Elektronika MS 1502 ***************************************************************************/ @@ -64,13 +64,16 @@ TIMER_CALLBACK_MEMBER(mc1502_state::keyb_signal_callback) keep pulsing while any key is pressed, and pulse one time after all keys are released. */ - if (key) { - if (m_kbd.pulsing < 2) { + if (key) + { + if (m_kbd.pulsing < 2) + { m_kbd.pulsing += 2; } } - if (m_kbd.pulsing) { + if (m_kbd.pulsing) + { m_pic8259->ir1_w(m_kbd.pulsing & 1); m_kbd.pulsing--; } @@ -105,9 +108,9 @@ READ8_MEMBER(mc1502_state::mc1502_ppi_portc_r) int data = 0xff; double tap_val = m_cassette->input(); - data = ( data & ~0x40 ) | ( tap_val < 0 ? 0x40 : 0x00 ) | ( (BIT(m_ppi_portb, 7) && m_pit_out2) ? 0x40 : 0x00 ); - data = ( data & ~0x20 ) | ( m_pit_out2 ? 0x20 : 0x00 ); - data = ( data & ~0x10 ) | ( (BIT(m_ppi_portb, 1) && m_pit_out2) ? 0x10 : 0x00 ); + data = (data & ~0x40) | (tap_val < 0 ? 0x40 : 0x00) | ((BIT(m_ppi_portb, 7) && m_pit_out2) ? 0x40 : 0x00); + data = (data & ~0x20) | (m_pit_out2 ? 0x20 : 0x00); + data = (data & ~0x10) | ((BIT(m_ppi_portb, 1) && m_pit_out2) ? 0x10 : 0x00); // DBG_LOG(2,"mc1502_ppi_portc_r",("= %02X (tap_val %f t2out %d) at %s\n", // data, tap_val, m_pit_out2, machine().describe_context())); @@ -155,7 +158,7 @@ WRITE8_MEMBER(mc1502_state::mc1502_kppi_portc_w) WRITE_LINE_MEMBER(mc1502_state::mc1502_i8251_syndet) { - if (!BIT(m_ppi_portc,3)) + if (!BIT(m_ppi_portc, 3)) m_maincpu->set_input_line(INPUT_LINE_NMI, state ? ASSERT_LINE : CLEAR_LINE); } @@ -178,35 +181,36 @@ WRITE_LINE_MEMBER(mc1502_state::mc1502_speaker_set_spkrdata) m_speaker->level_w(m_spkrdata & m_pit_out2); } -DRIVER_INIT_MEMBER( mc1502_state, mc1502 ) +DRIVER_INIT_MEMBER(mc1502_state, mc1502) { address_space &program = m_maincpu->space(AS_PROGRAM); - DBG_LOG(0,"init",("driver_init()\n")); + DBG_LOG(0, "init", ("driver_init()\n")); - program.install_readwrite_bank(0, m_ram->size()-1, "bank10"); - membank( "bank10" )->set_base( m_ram->pointer() ); + program.install_readwrite_bank(0, m_ram->size() - 1, "bank10"); + membank("bank10")->set_base(m_ram->pointer()); } -MACHINE_START_MEMBER( mc1502_state, mc1502 ) +MACHINE_START_MEMBER(mc1502_state, mc1502) { - DBG_LOG(0,"init",("machine_start()\n")); + DBG_LOG(0, "init", ("machine_start()\n")); /* - Keyboard polling circuit holds IRQ1 high until a key is - pressed, then it starts a timer that pulses IRQ1 low each - 40ms (check) for 20ms (check) until all keys are released. - Last pulse causes BIOS to write a 'break' scancode into port 60h. + Keyboard polling circuit holds IRQ1 high until a key is + pressed, then it starts a timer that pulses IRQ1 low each + 40ms (check) for 20ms (check) until all keys are released. + Last pulse causes BIOS to write a 'break' scancode into port 60h. */ m_pic8259->ir1_w(1); memset(&m_kbd, 0, sizeof(m_kbd)); - m_kbd.keyb_signal_timer = machine().scheduler().timer_alloc(timer_expired_delegate(FUNC(mc1502_state::keyb_signal_callback),this)); - m_kbd.keyb_signal_timer->adjust( attotime::from_msec(20), 0, attotime::from_msec(20) ); + m_kbd.keyb_signal_timer = + machine().scheduler().timer_alloc(timer_expired_delegate(FUNC(mc1502_state::keyb_signal_callback), this)); + m_kbd.keyb_signal_timer->adjust(attotime::from_msec(20), 0, attotime::from_msec(20)); } -MACHINE_RESET_MEMBER( mc1502_state, mc1502 ) +MACHINE_RESET_MEMBER(mc1502_state, mc1502) { - DBG_LOG(0,"init",("machine_reset()\n")); + DBG_LOG(0, "init", ("machine_reset()\n")); m_spkrdata = 0; m_pit_out2 = 1; @@ -254,7 +258,7 @@ static MACHINE_CONFIG_START( mc1502, mc1502_state ) MCFG_PIT8253_CLK2(XTAL_16MHz/12) /* pio port c pin 4, and speaker polling enough */ MCFG_PIT8253_OUT2_HANDLER(WRITELINE(mc1502_state, mc1502_pit8253_out2_changed)) - MCFG_PIC8259_ADD( "pic8259", INPUTLINE("maincpu", 0), VCC, NOOP) + MCFG_PIC8259_ADD("pic8259", INPUTLINE("maincpu", 0), VCC, NOOP) MCFG_DEVICE_ADD("ppi8255n1", I8255, 0) MCFG_I8255_OUT_PORTA_CB(DEVWRITE8("cent_data_out", output_latch_device, write)) @@ -268,7 +272,7 @@ static MACHINE_CONFIG_START( mc1502, mc1502_state ) MCFG_I8255_IN_PORTC_CB(DEVREAD8("cent_status_in", input_buffer_device, read)) MCFG_I8255_OUT_PORTC_CB(WRITE8(mc1502_state, mc1502_kppi_portc_w)) - MCFG_DEVICE_ADD( "upd8251", I8251, 0) + MCFG_DEVICE_ADD("upd8251", I8251, 0) MCFG_I8251_TXD_HANDLER(DEVWRITELINE("rs232", rs232_port_device, write_txd)) MCFG_I8251_DTR_HANDLER(DEVWRITELINE("rs232", rs232_port_device, write_dtr)) MCFG_I8251_RTS_HANDLER(DEVWRITELINE("rs232", rs232_port_device, write_rts)) @@ -314,7 +318,7 @@ static MACHINE_CONFIG_START( mc1502, mc1502_state ) MCFG_CASSETTE_DEFAULT_STATE(CASSETTE_STOPPED | CASSETTE_MOTOR_ENABLED | CASSETTE_SPEAKER_ENABLED) MCFG_SOFTWARE_LIST_ADD("flop_list","mc1502_flop") -// MCFG_SOFTWARE_LIST_ADD("cass_list","mc1502_cass") +// MCFG_SOFTWARE_LIST_ADD("cass_list","mc1502_cass") MCFG_RAM_ADD(RAM_TAG) MCFG_RAM_DEFAULT_SIZE("608K") /* 96 base + 512 on expansion card */ @@ -395,5 +399,5 @@ ROM_END ***************************************************************************/ /* YEAR NAME PARENT COMPAT MACHINE INPUT INIT COMPANY FULLNAME */ -COMP ( 1989, mc1502, ibm5150, 0, mc1502, mc1502, mc1502_state, mc1502, "NPO Microprocessor", "Elektronika MC-1502", 0) -COMP ( 1988, pk88, ibm5150, 0, mc1502, mc1502, mc1502_state, mc1502, "NPO Microprocessor", "Elektronika PK-88", MACHINE_NOT_WORKING | MACHINE_NO_SOUND) +COMP ( 1989, mc1502, 0, 0, mc1502, mc1502, mc1502_state, mc1502, "NPO Microprocessor", "Elektronika MS 1502", 0) +COMP ( 1988, pk88, 0, 0, mc1502, mc1502, mc1502_state, mc1502, "NPO Microprocessor", "Elektronika PK-88", MACHINE_NOT_WORKING | MACHINE_NO_SOUND) |