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-rw-r--r--src/dev/x86/I8259.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/dev/x86/I8259.py b/src/dev/x86/I8259.py
index e0128d032..0a516d30a 100644
--- a/src/dev/x86/I8259.py
+++ b/src/dev/x86/I8259.py
@@ -44,7 +44,7 @@ class I8259(BasicPioDevice):
output = Param.X86IntSourcePin(X86IntSourcePin(),
'The pin this I8259 drives')
mode = Param.X86I8259CascadeMode('How this I8259 is cascaded')
- slave = Param.I8259('Slave I8259, if any')
+ slave = Param.I8259(NULL, 'Slave I8259, if any')
def pin(self, line):
return X86IntSinkPin(device=self, number=line)