#define NV_PCRTC_START 0x00600800
#define NV_PCRTC_CONFIG 0x00600804
# define NV_PCRTC_CONFIG_START_ADDRESS_NON_VGA (1 << 0)
-# define NV_PCRTC_CONFIG_START_ADDRESS_HSYNC (2 << 0)
+# define NV04_PCRTC_CONFIG_START_ADDRESS_HSYNC (4 << 0)
+# define NV10_PCRTC_CONFIG_START_ADDRESS_HSYNC (2 << 0)
#define NV_PCRTC_CURSOR_CONFIG 0x00600810
# define NV_PCRTC_CURSOR_CONFIG_ENABLE_ENABLE (1 << 0)
# define NV_PCRTC_CURSOR_CONFIG_DOUBLE_SCAN_ENABLE (1 << 4)