1 files changed, 1 insertions, 0 deletions
diff --git a/ioapic.c b/ioapic.c
index 8da3151..65eec1f 100644
--- a/ioapic.c
+++ b/ioapic.c
@@ -1,5 +1,6 @@
 // The I/O APIC manages hardware interrupts for an SMP system.
 // http://www.intel.com/design/chipsets/datashts/29056601.pdf
+// See also picirq.c.
 
 #include "types.h"
 #include "defs.h"