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author Dirk Best <mail@dirk-best.de>2015-08-16 10:22:13 +0200
committer Dirk Best <mail@dirk-best.de>2015-08-16 10:26:27 +0200
commit0f5344075d2133b6d281ab4186562171a1b7869e (patch)
tree38942868ced7fa42abfaea653482c280f352c5a9 /src
parent12599ac604ebc7ff92898751e184a135e06d64c7 (diff)
k051960: irq enable is actually irq ack
Diffstat (limited to 'src')
-rw-r--r--src/mame/video/k051960.c16
-rw-r--r--src/mame/video/k051960.h3
2 files changed, 5 insertions, 14 deletions
diff --git a/src/mame/video/k051960.c b/src/mame/video/k051960.c
index ff895b5bd13..ab939945855 100644
--- a/src/mame/video/k051960.c
+++ b/src/mame/video/k051960.c
@@ -137,8 +137,7 @@ k051960_device::k051960_device(const machine_config &mconfig, const char *tag, d
m_readroms(0),
m_irq_enabled(0),
m_nmi_enabled(0),
- m_k051937_counter(0),
- m_vblank(0)
+ m_k051937_counter(0)
{
}
@@ -220,7 +219,6 @@ void k051960_device::device_start()
save_item(NAME(m_irq_enabled));
save_item(NAME(m_nmi_enabled));
save_item(NAME(m_k051937_counter));
- save_item(NAME(m_vblank));
}
//-------------------------------------------------
@@ -247,15 +245,10 @@ void k051960_device::device_reset()
DEVICE HANDLERS
*****************************************************************************/
-void k051960_device::update_irq()
-{
- m_irq_handler(m_irq_enabled && m_vblank ? ASSERT_LINE : CLEAR_LINE);
-}
-
void k051960_device::vblank_callback(screen_device &screen, bool state)
{
- m_vblank = state;
- update_irq();
+ if (state)
+ m_irq_handler(ASSERT_LINE);
}
int k051960_device::k051960_fetchromdata( int byte )
@@ -317,7 +310,8 @@ WRITE8_MEMBER( k051960_device::k051937_w )
/* bit 0 is IRQ enable */
m_irq_enabled = data & 0x01;
- update_irq();
+ if (m_irq_enabled)
+ m_irq_handler(CLEAR_LINE);
/* bit 1: probably FIRQ enable */
diff --git a/src/mame/video/k051960.h b/src/mame/video/k051960.h
index 1f1dac5f332..9d4efd04ff0 100644
--- a/src/mame/video/k051960.h
+++ b/src/mame/video/k051960.h
@@ -103,9 +103,6 @@ private:
int m_k051937_counter;
- int m_vblank;
- void update_irq();
-
int k051960_fetchromdata( int byte );
};