diff --git a/src/cpu/emulation/qemu-x86/northbridge.c b/src/cpu/emulation/qemu-x86/northbridge.c
index f9b63ca..34745a0 100644
--- a/src/cpu/emulation/qemu-x86/northbridge.c
+++ b/src/cpu/emulation/qemu-x86/northbridge.c
@@ -65,6 +65,11 @@
 	return tolm;
 }
 
+#if HAVE_HIGH_TABLES==1
+#define HIGH_TABLES_SIZE 64	// maximum size of high tables in KB
+extern uint64_t high_tables_base, high_tables_size;
+#endif
+
 static void pci_domain_set_resources(device_t dev)
 {
 	static const uint8_t ramregs[] = {
@@ -110,7 +115,14 @@
 
 		/* Report the memory regions. */
 		idx = 10;
-		ram_resource(dev, idx++, 0, tolmk);
+		ram_resource(dev, idx++, 0, 640);
+		ram_resource(dev, idx++, 768, tolmk - 768);
+
+#if HAVE_HIGH_TABLES==1
+		/* Leave some space for ACPI, PIRQ and MP tables */
+		high_tables_base = (tomk - HIGH_TABLES_SIZE) * 1024;
+		high_tables_size = HIGH_TABLES_SIZE * 1024;
+#endif
 	}
 	assign_resources(&dev->link[0]);
 }