/* CRTC underline register bits */
#define VGA_CRTC_UNDERLINE_DWORD (1 << 6)
+/* CRTC max scanline register bits */
+#define VGA_CRTC_MAXSCANLINE_DOUBLE (1 << 7)
+
/* CRTC mode control register bits */
#define VGA_CRTC_MODE_CONTROL_WRAP (1 << 5)
#define VGA_CRTC_MODE_CONTROL_BYTE (1 << 6)