diff options
Diffstat (limited to 'src/devices/cpu/z80/z80daisy.cpp')
-rw-r--r-- | src/devices/cpu/z80/z80daisy.cpp | 12 |
1 files changed, 5 insertions, 7 deletions
diff --git a/src/devices/cpu/z80/z80daisy.cpp b/src/devices/cpu/z80/z80daisy.cpp index a46f7956179..23169dd3600 100644 --- a/src/devices/cpu/z80/z80daisy.cpp +++ b/src/devices/cpu/z80/z80daisy.cpp @@ -166,11 +166,11 @@ int z80_daisy_chain_interface::daisy_update_irq_state() //------------------------------------------------- -// call_ack_device - acknowledge an interrupt -// from a chained device and return the vector +// daisy_get_irq_device - return the device +// in the chain that requested the interrupt //------------------------------------------------- -int z80_daisy_chain_interface::daisy_call_ack_device() +device_z80daisy_interface *z80_daisy_chain_interface::daisy_get_irq_device() { // loop over all devices; dev[0] is the highest priority for (device_z80daisy_interface *intf = m_chain; intf != nullptr; intf = intf->m_daisy_next) @@ -178,14 +178,12 @@ int z80_daisy_chain_interface::daisy_call_ack_device() // if this device is asserting the INT line, that's the one we want int state = intf->z80daisy_irq_state(); if (state & Z80_DAISY_INT) - return intf->z80daisy_irq_ack(); // call the requesting device + return intf; } if (VERBOSE && daisy_chain_present()) device().logerror("Interrupt from outside Z80 daisy chain\n"); - - // call back the CPU interface to retrieve the vector - return m_irq_callback(device(), 0); + return nullptr; } |