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modena: simplify nmi handler

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This commit is contained in:
hap 2020-06-29 23:26:46 +02:00
parent e9818457de
commit 26b6ba93ce
2 changed files with 4 additions and 9 deletions
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11
src/mame/drivers/mephisto_modena.cpp
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@ -13,6 +13,7 @@ Hold Pawn + Knight buttons at boot for test mode.
#include "emu.h"
#include "cpu/m6502/m65c02.h"
#include "machine/clock.h"
#include "machine/nvram.h"
#include "machine/sensorboard.h"
#include "machine/timer.h"
@ -61,9 +62,6 @@ private:
void led_w(u8 data);
void update_display();
TIMER_DEVICE_CALLBACK_MEMBER(nmi_on) { m_maincpu->set_input_line(M6502_NMI_LINE, ASSERT_LINE); }
TIMER_DEVICE_CALLBACK_MEMBER(nmi_off) { m_maincpu->set_input_line(M6502_NMI_LINE, CLEAR_LINE); }
u8 m_board_mux = 0xff;
u8 m_digits_idx = 0;
u8 m_io_ctrl = 0;
@ -175,11 +173,8 @@ void modena_state::modena(machine_config &config)
M65C02(config, m_maincpu, 4.194304_MHz_XTAL); // W65C02SP or RP65C02G
m_maincpu->set_addrmap(AS_PROGRAM, &modena_state::modena_mem);
timer_device &nmi_on(TIMER(config, "nmi_on"));
const attotime nmi_period = attotime::from_hz(4.194304_MHz_XTAL / (1 << 13));
nmi_on.configure_periodic(FUNC(modena_state::nmi_on), nmi_period);
nmi_on.set_start_delay(nmi_period - attotime::from_usec(975)); // active for 975us
TIMER(config, "nmi_off").configure_periodic(FUNC(modena_state::nmi_off), nmi_period);
clock_device &nmi_clock(CLOCK(config, "nmi_clock", 4.194304_MHz_XTAL / (1 << 13))); // active for 975us
nmi_clock.signal_handler().set_inputline(m_maincpu, INPUT_LINE_NMI);
NVRAM(config, "nvram", nvram_device::DEFAULT_ALL_0);

2
src/mame/drivers/novag_micro2.cpp
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@ -84,7 +84,7 @@ private:
required_device<mcs48_cpu_device> m_maincpu;
required_device<pwm_display_device> m_display;
required_device<sensorboard_device> m_board;
optional_device<dac_bit_interface> m_dac;
required_device<dac_bit_interface> m_dac;
required_ioport m_inputs;
// I/O handlers