#define IBMRGB_REF_FREQ_1 14.31818
#define IBMRGB_REF_FREQ_2 50.00000
#define IBMRGB_rev 0x00
#define IBMRGB_id 0x01
#define IBMRGB_misc_clock 0x02
#define IBMRGB_sync 0x03
#define IBMRGB_hsync_pos 0x04
#define IBMRGB_pwr_mgmt 0x05
#define IBMRGB_dac_op 0x06
#define IBMRGB_pal_ctrl 0x07
#define IBMRGB_sysclk 0x08
#define IBMRGB_pix_fmt 0x0a
#define IBMRGB_8bpp 0x0b
#define IBMRGB_16bpp 0x0c
#define IBMRGB_24bpp 0x0d
#define IBMRGB_32bpp 0x0e
#define IBMRGB_pll_ctrl1 0x10
#define IBMRGB_pll_ctrl2 0x11
#define IBMRGB_pll_ref_div_fix 0x14
#define IBMRGB_sysclk_ref_div 0x15
#define IBMRGB_sysclk_vco_div 0x16
#define IBMRGB_f0 0x20
#define IBMRGB_m0 0x20
#define IBMRGB_n0 0x21
#define IBMRGB_curs 0x30
#define IBMRGB_curs_xl 0x31
#define IBMRGB_curs_xh 0x32
#define IBMRGB_curs_yl 0x33
#define IBMRGB_curs_yh 0x34
#define IBMRGB_curs_hot_x 0x35
#define IBMRGB_curs_hot_y 0x36
#define IBMRGB_curs_col1_r 0x40
#define IBMRGB_curs_col1_g 0x41
#define IBMRGB_curs_col1_b 0x42
#define IBMRGB_curs_col2_r 0x43
#define IBMRGB_curs_col2_g 0x44
#define IBMRGB_curs_col2_b 0x45
#define IBMRGB_curs_col3_r 0x46
#define IBMRGB_curs_col3_g 0x47
#define IBMRGB_curs_col3_b 0x48
#define IBMRGB_border_col_r 0x60
#define IBMRGB_border_col_g 0x61
#define IBMRGB_botder_col_b 0x62
#define IBMRGB_misc1 0x70
#define IBMRGB_misc2 0x71
#define IBMRGB_misc3 0x72
#define IBMRGB_misc4 0x73
#define IBMRGB_dac_sense 0x82
#define IBMRGB_misr_r 0x84
#define IBMRGB_misr_g 0x86
#define IBMRGB_misr_b 0x88
#define IBMRGB_pll_vco_div_in 0x8e
#define IBMRGB_pll_ref_div_in 0x8f
#define IBMRGB_vram_mask_0 0x90
#define IBMRGB_vram_mask_1 0x91
#define IBMRGB_vram_mask_2 0x92
#define IBMRGB_vram_mask_3 0x93
#define IBMRGB_curs_array 0x100