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Diffstat (limited to 'src/devices/machine/upd4701.cpp')
-rw-r--r--src/devices/machine/upd4701.cpp11
1 files changed, 7 insertions, 4 deletions
diff --git a/src/devices/machine/upd4701.cpp b/src/devices/machine/upd4701.cpp
index 46129b3a92a..3fdcbf726fb 100644
--- a/src/devices/machine/upd4701.cpp
+++ b/src/devices/machine/upd4701.cpp
@@ -170,10 +170,13 @@ WRITE8_MEMBER(upd4701_device::reset_y)
READ8_MEMBER(upd4701_device::reset_xy)
{
- resetx_w(1);
- resety_w(1);
- resetx_w(0);
- resety_w(0);
+ if (!machine().side_effect_disabled())
+ {
+ resetx_w(1);
+ resety_w(1);
+ resetx_w(0);
+ resety_w(0);
+ }
return space.unmap();
}