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-rw-r--r--i386/i386at/cram.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/i386/i386at/cram.h b/i386/i386at/cram.h
index 8373ce0..40f3f0a 100644
--- a/i386/i386at/cram.h
+++ b/i386/i386at/cram.h
@@ -50,6 +50,9 @@ NEGLIGENCE, OR OTHER TORTIOUS ACTION, ARISING OUR OF OR IN CONNECTION
WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
+#ifndef _CRAM_H_
+#define _CRAM_H_
+
/*
* outb(CMOS_ADDR, addr);
* result = inb(CMOS_DATA);
@@ -73,3 +76,4 @@ WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
#define CM_CGA_80 0x20
#define CM_MONO_80 0x30
+#endif /* _CRAM_H_ */