From ba938abf24b5807c450fb654c8e99f145579cee2 Mon Sep 17 00:00:00 2001 From: AJR Date: Wed, 14 Feb 2018 19:08:53 -0500 Subject: ay31015.cpp: Fix unresolved callback disaster (nw) --- src/devices/machine/ay31015.cpp | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/src/devices/machine/ay31015.cpp b/src/devices/machine/ay31015.cpp index f0e8fe2a97a..c5dc7f7a613 100644 --- a/src/devices/machine/ay31015.cpp +++ b/src/devices/machine/ay31015.cpp @@ -230,7 +230,8 @@ inline void ay31015_device::update_status_pin(uint8_t reg_bit, ay31015_output_pi if (new_value != m_pins[pin]) { m_pins[pin] = new_value; - write_cb(new_value); + if (!write_cb.isnull()) + write_cb(new_value); } } -- cgit v1.2.3