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-rw-r--r--sys/isa/isareg.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/sys/isa/isareg.h b/sys/isa/isareg.h
index e89136c7e1e5..8b2d55608078 100644
--- a/sys/isa/isareg.h
+++ b/sys/isa/isareg.h
@@ -49,7 +49,7 @@
#define IO_RTC 0x070 /* RTC */
#define IO_ICU2 0x0A0 /* 8259A Interrupt Controller #2 */
-#define IO_MDA 0x3B0 /* Monochome Adapter */
+#define IO_MDA 0x3B0 /* Monochrome Adapter */
#define IO_VGA 0x3C0 /* E/VGA Ports */
#define IO_CGA 0x3D0 /* CGA Ports */