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Diffstat (limited to 'src/mame/drivers/fidel_sc9.cpp')
-rw-r--r--src/mame/drivers/fidel_sc9.cpp18
1 files changed, 6 insertions, 12 deletions
diff --git a/src/mame/drivers/fidel_sc9.cpp b/src/mame/drivers/fidel_sc9.cpp
index e61bdec68ad..160996cb02a 100644
--- a/src/mame/drivers/fidel_sc9.cpp
+++ b/src/mame/drivers/fidel_sc9.cpp
@@ -28,6 +28,7 @@ I/O is via TTL, not further documented here
The Playmatic S was only released in Germany, it's basically a 'deluxe' version of SC9
with magnet sensors and came with CB9 and CB16.
+-------------------------------------------------------------------------------
Starting with SC9, Fidelity added a cartridge slot to their chess computers, meant for
extra book opening databases and recorded games.
@@ -46,11 +47,11 @@ IRQ and write strobe are unused. Maximum known size is 16KB.
#include "emu.h"
-#include "bus/generic/slot.h"
#include "bus/generic/carts.h"
+#include "bus/generic/slot.h"
#include "cpu/m6502/m6502.h"
+#include "machine/clock.h"
#include "machine/sensorboard.h"
-#include "machine/timer.h"
#include "sound/dac.h"
#include "video/pwm.h"
@@ -72,7 +73,6 @@ public:
sc9_state(const machine_config &mconfig, device_type type, const char *tag) :
driver_device(mconfig, type, tag),
m_maincpu(*this, "maincpu"),
- m_irq_on(*this, "irq_on"),
m_board(*this, "board"),
m_display(*this, "display"),
m_dac(*this, "dac"),
@@ -90,7 +90,6 @@ protected:
// devices/pointers
required_device<cpu_device> m_maincpu;
- required_device<timer_device> m_irq_on;
required_device<sensorboard_device> m_board;
required_device<pwm_display_device> m_display;
required_device<dac_bit_interface> m_dac;
@@ -100,10 +99,6 @@ protected:
void sc9_map(address_map &map);
void sc9d_map(address_map &map);
- // periodic interrupts
- template<int Line> TIMER_DEVICE_CALLBACK_MEMBER(irq_on) { m_maincpu->set_input_line(Line, ASSERT_LINE); }
- template<int Line> TIMER_DEVICE_CALLBACK_MEMBER(irq_off) { m_maincpu->set_input_line(Line, CLEAR_LINE); }
-
// I/O handlers
void update_display();
void control_w(u8 data);
@@ -269,10 +264,9 @@ void sc9_state::sc9d(machine_config &config)
M6502(config, m_maincpu, 3.9_MHz_XTAL / 2); // R6502AP, 3.9MHz resonator
m_maincpu->set_addrmap(AS_PROGRAM, &sc9_state::sc9d_map);
- const attotime irq_period = attotime::from_hz(600); // from 555 timer (22nF, 102K, 2.7K), ideal frequency is 600Hz
- TIMER(config, m_irq_on).configure_periodic(FUNC(sc9_state::irq_on<M6502_IRQ_LINE>), irq_period);
- m_irq_on->set_start_delay(irq_period - attotime::from_usec(41)); // active for 41us
- TIMER(config, "irq_off").configure_periodic(FUNC(sc9_state::irq_off<M6502_IRQ_LINE>), irq_period);
+ auto &irq_clock(CLOCK(config, "irq_clock", 600)); // from 555 timer (22nF, 102K, 2.7K), ideal frequency is 600Hz
+ irq_clock.set_pulse_width(attotime::from_usec(41)); // active for 41us
+ irq_clock.signal_handler().set_inputline(m_maincpu, M6502_IRQ_LINE);
SENSORBOARD(config, m_board).set_type(sensorboard_device::BUTTONS);
m_board->init_cb().set(m_board, FUNC(sensorboard_device::preset_chess));