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Diffstat (limited to 'src/emu/diexec.cpp')
-rw-r--r--src/emu/diexec.cpp25
1 files changed, 16 insertions, 9 deletions
diff --git a/src/emu/diexec.cpp b/src/emu/diexec.cpp
index c7f4752bd6d..4eaef193c61 100644
--- a/src/emu/diexec.cpp
+++ b/src/emu/diexec.cpp
@@ -46,7 +46,7 @@ device_execute_interface::device_execute_interface(const machine_config &mconfig
: device_interface(device, "execute")
, m_scheduler(nullptr)
, m_disabled(false)
- , m_vblank_interrupt_screen(*this, finder_base::DUMMY_TAG)
+ , m_vblank_interrupt_screen(nullptr)
, m_timed_interrupt_period(attotime::zero)
, m_nextexec(nullptr)
, m_timedint_timer(nullptr)
@@ -345,13 +345,14 @@ void device_execute_interface::execute_set_input(int linenum, int state)
void device_execute_interface::interface_validity_check(validity_checker &valid) const
{
// validate the interrupts
- if (!m_vblank_interrupt_screen)
+ if (m_vblank_interrupt.isnull())
{
- if (m_vblank_interrupt_screen.finder_tag() != finder_base::DUMMY_TAG)
- osd_printf_error("VBLANK interrupt references non-existent screen tag %s\n", m_vblank_interrupt_screen.finder_tag());
- else if (!m_vblank_interrupt.isnull())
- osd_printf_error("VBLANK interrupt specified, but no screen configured\n");
- }
+ screen_device_iterator iter(device().mconfig().root_device());
+ if (iter.first() == nullptr)
+ osd_printf_error("VBLANK interrupt specified, but the driver is screenless\n");
+ else if (m_vblank_interrupt_screen != nullptr && device().siblingdevice(m_vblank_interrupt_screen) == nullptr)
+ osd_printf_error("VBLANK interrupt references a non-existant screen tag '%s'\n", m_vblank_interrupt_screen);
+ }
if (!m_timed_interrupt.isnull() && m_timed_interrupt_period == attotime::zero)
osd_printf_error("Timed interrupt handler specified with 0 period\n");
@@ -442,8 +443,14 @@ void device_execute_interface::interface_post_reset()
elem.reset();
// reconfingure VBLANK interrupts
- if (m_vblank_interrupt_screen)
- m_vblank_interrupt_screen->register_vblank_callback(vblank_state_delegate(&device_execute_interface::on_vblank, this));
+ if (m_vblank_interrupt_screen != nullptr)
+ {
+ // get the screen that will trigger the VBLANK
+ screen_device * screen = device().siblingdevice<screen_device>(m_vblank_interrupt_screen);
+
+ assert(screen != nullptr);
+ screen->register_vblank_callback(vblank_state_delegate(&device_execute_interface::on_vblank, this));
+ }
// reconfigure periodic interrupts
if (m_timed_interrupt_period != attotime::zero)