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-rw-r--r--src/devices/machine/z80scc.cpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/devices/machine/z80scc.cpp b/src/devices/machine/z80scc.cpp
index f98de82ae43..0bcefeb8913 100644
--- a/src/devices/machine/z80scc.cpp
+++ b/src/devices/machine/z80scc.cpp
@@ -635,7 +635,7 @@ int z80scc_device::z80daisy_irq_ack()
if (ret == -1 && m_cputag != nullptr)
{
// default irq vector is -1 for 68000 but 0 for z80 for example...
- ret = owner()->subdevice<cpu_device>(m_cputag)->default_irq_vector();
+ ret = owner()->subdevice<cpu_device>(m_cputag)->default_irq_vector(INPUT_LINE_IRQ0);
LOGINT(" - failed to find an interrupt to ack, returning default IRQ vector: %02x\n", ret );
logerror("z80sio_irq_ack: failed to find an interrupt to ack!\n");
}