diff --git a/src/arch/x86/x86_traits.hh b/src/arch/x86/x86_traits.hh
index 9e9882063b..e4a639277c 100644
--- a/src/arch/x86/x86_traits.hh
+++ b/src/arch/x86/x86_traits.hh
@@ -72,6 +72,9 @@ namespace X86ISA
     // accesses from the CPU, and the other is for all APICs to communicate.
     const Addr PhysAddrAPICRangeSize = 1 << 12;
 
+    // Put this in an unused part of the 16 bit IO port address space.
+    const Addr PhysAddrIntA = 0x8000000100000000ULL;
+
     static inline Addr
     x86IOAddress(const uint32_t port)
     {
diff --git a/src/dev/x86/i8259.cc b/src/dev/x86/i8259.cc
index bd6d18c814..c78e12967f 100644
--- a/src/dev/x86/i8259.cc
+++ b/src/dev/x86/i8259.cc
@@ -28,6 +28,7 @@
 
 #include "dev/x86/i8259.hh"
 
+#include "arch/x86/x86_traits.hh"
 #include "base/bitfield.hh"
 #include "base/trace.hh"
 #include "debug/I8259.hh"
@@ -62,6 +63,17 @@ X86ISA::I8259::I8259(const Params &p)
         state = false;
 }
 
+AddrRangeList
+X86ISA::I8259::getAddrRanges() const
+{
+    AddrRangeList ranges = BasicPioDevice::getAddrRanges();
+    if (mode == enums::I8259Master || mode == enums::I8259Single) {
+        // Listen for INTA messages.
+        ranges.push_back(RangeSize(PhysAddrIntA, 1));
+    }
+    return ranges;
+}
+
 void
 X86ISA::I8259::init()
 {
@@ -75,8 +87,11 @@ Tick
 X86ISA::I8259::read(PacketPtr pkt)
 {
     assert(pkt->getSize() == 1);
-    switch(pkt->getAddr() - pioAddr)
-    {
+    if (pkt->getAddr() == PhysAddrIntA) {
+        assert(mode == enums::I8259Master || mode == enums::I8259Single);
+        pkt->setLE<uint8_t>(getVector());
+    }
+    switch(pkt->getAddr() - pioAddr) {
       case 0x0:
         if (readIRR) {
             DPRINTF(I8259, "Reading IRR as %#x.\n", IRR);
diff --git a/src/dev/x86/i8259.hh b/src/dev/x86/i8259.hh
index dcc59875cc..afd4894532 100644
--- a/src/dev/x86/i8259.hh
+++ b/src/dev/x86/i8259.hh
@@ -99,6 +99,8 @@ class I8259 : public BasicPioDevice
             return BasicPioDevice::getPort(if_name, idx);
     }
 
+    AddrRangeList getAddrRanges() const override;
+
     Tick read(PacketPtr pkt) override;
     Tick write(PacketPtr pkt) override;