--- /dev/null
+#ifndef BIOS_H
+#define BIOS_H
+
+FILE_LICENCE ( GPL2_OR_LATER );
+
+#define BDA_SEG 0x0040
+#define BDA_EQUIPMENT_WORD 0x0010
+#define BDA_FBMS 0x0013
+#define BDA_REBOOT 0x0072
+#define BDA_REBOOT_WARM 0x1234
+#define BDA_NUM_DRIVES 0x0075
+#define BDA_CHAR_HEIGHT 0x0085
+
+#endif /* BIOS_H */