#define ATTRIB 0x3c0
#define STATUS 0x3da
+#define SEQ_I 0x3C4 /* Sequencer Index */
+#define SEQ_D 0x3C5 /* Sequencer Data Register */
+
+#define GRA_I 0x3CE /* Graphics Controller Index */
+#define GRA_D 0x3CF /* Graphics Controller Data Register */
+
+
typedef struct _VideoMode {
unsigned short VidSeg;
unsigned char Misc;