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-rw-r--r--src/arch/x86/include/bios.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/src/arch/x86/include/bios.h b/src/arch/x86/include/bios.h
index 14e7acbc7..3ba8264ec 100644
--- a/src/arch/x86/include/bios.h
+++ b/src/arch/x86/include/bios.h
@@ -6,6 +6,9 @@ FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
#define BDA_SEG 0x0040
#define BDA_EBDA 0x000e
#define BDA_EQUIPMENT_WORD 0x0010
+#define BDA_KB0 0x0017
+#define BDA_KB0_CTRL 0x04
+#define BDA_KB0_CAPSLOCK 0x040
#define BDA_FBMS 0x0013
#define BDA_TICKS 0x006c
#define BDA_MIDNIGHT 0x0070