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#include "types.h" // u8
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#include "farptr.h" // struct segoff_s
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#define VESA_SIGNATURE 0x41534556 // VESA
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#define VBE2_SIGNATURE 0x32454256 // VBE2
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struct segoff_s oem_string;
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struct segoff_s video_mode;
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struct segoff_s oem_vendor_string;
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struct segoff_s oem_product_string;
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struct segoff_s oem_revision_string;
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struct vbe_mode_info {
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struct segoff_s win_func_ptr;
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u16 bytes_per_scanline;
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u16 linear_bytes_per_scanline;
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struct vbe_crtc_info {
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/* VBE Return Status Info */
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#define VBE_RETURN_STATUS_SUPPORTED 0x4F
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#define VBE_RETURN_STATUS_UNSUPPORTED 0x00
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#define VBE_RETURN_STATUS_SUCCESSFULL 0x00
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#define VBE_RETURN_STATUS_FAILED 0x01
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#define VBE_RETURN_STATUS_NOT_SUPPORTED 0x02
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#define VBE_RETURN_STATUS_INVALID 0x03
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/* VBE Mode Numbers */
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#define VBE_MODE_VESA_DEFINED 0x0100
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#define VBE_MODE_REFRESH_RATE_USE_CRTC 0x0800
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#define VBE_MODE_LINEAR_FRAME_BUFFER 0x4000
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#define VBE_MODE_PRESERVE_DISPLAY_MEMORY 0x8000
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#define VBE_VESA_MODE_END_OF_LIST 0xFFFF
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#define VBE_CAPABILITY_8BIT_DAC 0x0001
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#define VBE_CAPABILITY_NOT_VGA_COMPATIBLE 0x0002
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#define VBE_CAPABILITY_RAMDAC_USE_BLANK_BIT 0x0004
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#define VBE_CAPABILITY_STEREOSCOPIC_SUPPORT 0x0008
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#define VBE_CAPABILITY_STEREO_VIA_VESA_EVC 0x0010
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/* Mode Attributes */
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#define VBE_MODE_ATTRIBUTE_SUPPORTED 0x0001
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#define VBE_MODE_ATTRIBUTE_EXTENDED_INFORMATION_AVAILABLE 0x0002
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#define VBE_MODE_ATTRIBUTE_TTY_BIOS_SUPPORT 0x0004
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#define VBE_MODE_ATTRIBUTE_COLOR_MODE 0x0008
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#define VBE_MODE_ATTRIBUTE_GRAPHICS_MODE 0x0010
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#define VBE_MODE_ATTRIBUTE_NOT_VGA_COMPATIBLE 0x0020
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#define VBE_MODE_ATTRIBUTE_NO_VGA_COMPATIBLE_WINDOW 0x0040
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#define VBE_MODE_ATTRIBUTE_LINEAR_FRAME_BUFFER_MODE 0x0080
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#define VBE_MODE_ATTRIBUTE_DOUBLE_SCAN_MODE 0x0100
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#define VBE_MODE_ATTRIBUTE_INTERLACE_MODE 0x0200
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#define VBE_MODE_ATTRIBUTE_HARDWARE_TRIPLE_BUFFER 0x0400
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#define VBE_MODE_ATTRIBUTE_HARDWARE_STEREOSCOPIC_DISPLAY 0x0800
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#define VBE_MODE_ATTRIBUTE_DUAL_DISPLAY_START_ADDRESS 0x1000
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#define VBE_MODE_ATTTRIBUTE_LFB_ONLY ( VBE_MODE_ATTRIBUTE_NO_VGA_COMPATIBLE_WINDOW | VBE_MODE_ATTRIBUTE_LINEAR_FRAME_BUFFER_MODE )
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/* Window attributes */
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#define VBE_WINDOW_ATTRIBUTE_RELOCATABLE 0x01
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#define VBE_WINDOW_ATTRIBUTE_READABLE 0x02
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#define VBE_WINDOW_ATTRIBUTE_WRITEABLE 0x04
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#define VBE_MEMORYMODEL_TEXT_MODE 0x00
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#define VBE_MEMORYMODEL_CGA_GRAPHICS 0x01
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#define VBE_MEMORYMODEL_HERCULES_GRAPHICS 0x02
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#define VBE_MEMORYMODEL_PLANAR 0x03
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#define VBE_MEMORYMODEL_PACKED_PIXEL 0x04
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#define VBE_MEMORYMODEL_NON_CHAIN_4_256 0x05
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#define VBE_MEMORYMODEL_DIRECT_COLOR 0x06
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#define VBE_MEMORYMODEL_YUV 0x07
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/* DirectColorModeInfo */
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#define VBE_DIRECTCOLOR_COLOR_RAMP_PROGRAMMABLE 0x01
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#define VBE_DIRECTCOLOR_RESERVED_BITS_AVAILABLE 0x02