708 lines
18 KiB
PHP
708 lines
18 KiB
PHP
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struc VBE_VGAInfo {
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.VESASignature dd ? ; char
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.VESAVersion dw ? ; short
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.OemStringPtr dd ? ; char *
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.Capabilities dd ? ; ulong
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.VideoModePtr dd ? ; ulong
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.TotalMemory dw ? ; short
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; VBE 2.0+
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.OemSoftwareRev db ? ; short
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.OemVendorNamePtr dw ? ; char *
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.OemProductNamePtr dw ? ; char *
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.OemProductRevPtr dw ? ; char *
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.reserved rb 222 ; char
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.OemData rb 256 ; char
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}
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struc VBE_ModeInfo {
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.ModeAttributes dw ? ; short
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.WinAAttributes db ? ; char
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.WinBAttributes db ? ; char
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.WinGranularity dw ? ; short
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.WinSize dw ? ; short
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.WinASegment dw ? ; ushort
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.WinBSegment dw ? ; ushort
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.WinFuncPtr dd ? ; void *
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.BytesPerScanLine dw ? ; short
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.XRes dw ? ; short
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.YRes dw ? ; short
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.XCharSize db ? ; char
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.YCharSize db ? ; char
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.NumberOfPlanes db ? ; char
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.BitsPerPixel db ? ; char
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.NumberOfBanks db ? ; char
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.MemoryModel db ? ; char
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.BankSize db ? ; char
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.NumberOfImagePages db ? ; char
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.res1 db ? ; char
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.RedMaskSize db ? ; char
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.RedFieldPosition db ? ; char
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.GreenMaskSize db ? ; char
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.GreenFieldPosition db ? ; char
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.BlueMaskSize db ? ; char
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.BlueFieldPosition db ? ; char
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.RsvedMaskSize db ? ; char
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.RsvedFieldPosition db ? ; char
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.DirectColorModeInfo db ? ; char ; MISSED IN THIS TUTORIAL!! SEE ABOVE
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; VBE 2.0+
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.PhysBasePtr dd ? ; ulong
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.OffScreenMemOffset dd ? ; ulong
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.OffScreenMemSize dw ? ; short
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; VBE 3.0+
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.LinbytesPerScanLine dw ? ; short
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.BankNumberOfImagePages db ? ; char
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.LinNumberOfImagePages db ? ; char
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.LinRedMaskSize db ? ; char
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.LinRedFieldPosition db ? ; char
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.LingreenMaskSize db ? ; char
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.LinGreenFieldPosition db ? ; char
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.LinBlueMaskSize db ? ; char
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.LinBlueFieldPosition db ? ; char
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.LinRsvdMaskSize db ? ; char
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.LinRsvdFieldPosition db ? ; char
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.MaxPixelClock dd ? ; ulong
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.res2 rb 190 ; char
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}
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virtual at $A000
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vi VBE_VGAInfo
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mi VBE_ModeInfo
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modes_table:
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end virtual
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cursor_pos dw 0 ;<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>.
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home_cursor dw 0 ;current shows rows a table
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end_cursor dw 0 ;end of position current shows rows a table
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long_v_table equ 9 ;long of visible video table
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size_of_step equ 10
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scroll_area_size equ (long_v_table-2)
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int2str:
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dec bl
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jz @f
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xor edx,edx
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div ecx
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push edx
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call int2str
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pop eax
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@@: or al,0x30
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mov [ds:di],al
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inc di
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ret
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int2strnz:
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cmp eax,ecx
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jb @f
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xor edx,edx
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div ecx
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push edx
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call int2strnz
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pop eax
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@@: or al,0x30
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mov [es:di],al
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inc di
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ret
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;-------------------------------------------------------
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;Write message about incorrect v_mode and write message about jmp on swith v_mode
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v_mode_error:
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_setcursor 19,2
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mov si, fatalsel
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call printplain
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_setcursor 20,2
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mov si,pres_key
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call printplain
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xor eax,eax
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int 16h
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jmp cfgmanager.d
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;-------------------------------------------------------
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;
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;-------------------------------------------------------
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print_vesa_info:
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_setcursor 5,2
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mov [es:vi.VESASignature],'VBE2'
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mov ax,0x4F00
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mov di,vi ;0xa000
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int 0x10
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or ah,ah
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jz @f
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mov [es:vi.VESASignature],'VESA'
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mov ax,$4F00
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mov di,vi
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int 0x10
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or ah,ah
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jnz .exit
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@@:
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cmp [es:vi.VESASignature],'VESA'
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jne .exit
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cmp [es:vi.VESAVersion],0x0100
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jb .exit
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jmp .vesaok2
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.exit:
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mov si,novesa
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call printplain
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ret
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.vesaok2:
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mov ax,[es:vi.VESAVersion]
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add ax,'00'
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mov [s_vesa.ver], ah
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mov [s_vesa.ver+2], al
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mov si,s_vesa
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call printplain
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_setcursor 4,2
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mov si,word[es:vi.OemStringPtr]
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mov di,si
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push ds
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mov ds,word[es:vi.OemStringPtr+2]
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call printplain
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pop ds
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ret
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;-----------------------------------------------------------------------------
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calc_vmodes_table:
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pushad
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; push 0
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; pop es
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lfs si, [es:vi.VideoModePtr]
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mov bx,modes_table
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;save no vesa mode of work 320x200, EGA/CGA 256 梥⮢ and 640x480, VGA 16 梥⮢
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mov word [es:bx],640
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mov word [es:bx+2],480
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mov word [es:bx+6],0x13
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mov word [es:bx+10],640
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mov word [es:bx+12],480
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mov word [es:bx+16],0x12
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add bx,20
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.next_mode:
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mov cx,word [fs:si] ; mode number
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cmp cx,-1
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je .modes_ok.2
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mov ax,0x4F01
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mov di,mi
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int 0x10
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or ah,ah
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jnz .modes_ok.2;vesa_info.exit
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test [es:mi.ModeAttributes],00000001b ;videomode support ?
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jz @f
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test [es:mi.ModeAttributes],00010000b ;picture ?
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jz @f
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test [es:mi.ModeAttributes],10000000b ;LFB ?
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jz @f
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; cmp [es:mi.BitsPerPixel], 24
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; jb @f
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cmp [es:mi.BitsPerPixel],16
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jne .l0
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cmp [es:mi.GreenMaskSize],5
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jne .l0
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mov [es:mi.BitsPerPixel],15
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.l0:
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cmp [es:mi.XRes],640
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jb @f
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cmp [es:mi.YRes],480
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jb @f
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; cmp [es:mi.BitsPerPixel],8
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; jb @f
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mov ax,[es:mi.XRes]
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mov [es:bx+0],ax ; +0[2] : resolution X
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mov ax,[es:mi.YRes]
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mov [es:bx+2],ax ; +2[2] : resolution Y
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mov ax,[es:mi.ModeAttributes]
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mov [es:bx+4],ax ; +4[2] : attributes
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cmp [s_vesa.ver],'2'
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jb .lp1
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or cx,0x4000 ; use LFB
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.lp1: mov [es:bx+6],cx ; +6 : mode number
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movzx ax,byte [es:mi.BitsPerPixel]
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mov word [es:bx+8],ax ; +8 : bits per pixel
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add bx,size_of_step
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@@:
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add si,2
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jmp .next_mode
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.modes_ok.2:
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mov word[es:bx],-1 ;end video table
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mov word[end_cursor],bx ;save end cursor position
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;;;;;;;;;;;;;;;;;;
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;Sort array
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; mov si,modes_table
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;.new_mode:
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; mov ax,word [es:si]
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; cmp ax,-1
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; je .exxit
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; add ax,word [es:si+2]
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; add ax,word [es:si+8]
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; mov bp,si
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;.again:
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; add bp,12
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; mov bx,word [es:bp]
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; cmp bx,-1
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; je .exit
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; add bx,word [es:bp+2]
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; add bx,word [es:bp+8]
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;
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; cmp ax,bx
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; ja .loops
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; jmp .again
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;.loops:
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; push dword [es:si]
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; push dword [es:si+4]
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; push dword [es:si+8]
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; push dword [es:bp]
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; push dword [es:bp+4]
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; push dword [es:bp+8]
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;
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; pop dword [es:si+8]
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; pop dword [es:si+4]
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; pop dword [es:si]
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; pop dword [es:bp+8]
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; pop dword [es:bp+4]
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; pop dword [es:bp]
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; jmp .new_mode
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;
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;.exit: add si,12
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; jmp .new_mode
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;.exxit:
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popad
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ret
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;-----------------------------------------------------------------------------
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draw_current_vmode:
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push 0
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pop es
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mov si,word [cursor_pos]
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cmp word [es:si+6],0x12
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je .no_vesa_0x12
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cmp word [es:si+6],0x13
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je .no_vesa_0x13
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mov di,loader_block_error
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movzx eax,word[es:si+0]
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mov ecx,10
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call int2strnz
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mov byte[es:di],'x'
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inc di
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movzx eax,word[es:si+2]
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call int2strnz
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mov byte[es:di],'x'
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inc di
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movzx eax,word[es:si+8]
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call int2strnz
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mov dword[es:di],0x00000d0a
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mov si,loader_block_error
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push ds
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push es
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pop ds
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call printplain
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pop ds
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ret
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.no_vesa_0x13:
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mov si,mode0
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jmp .print
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.no_vesa_0x12:
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mov si,mode9
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.print:
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call printplain
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ret
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;-----------------------------------------------------------------------------
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check_first_parm:
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mov ax,word [preboot_graph]
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test ax,ax
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jnz .no_zero ;if no zero
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.zerro:
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; mov ax,modes_table
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; mov word [cursor_pos],ax
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; mov word [home_cursor],ax
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; mov word [preboot_graph],ax
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;SET default video of mode first probe will fined a move of work 1024x768@32
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mov ax,1024
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mov bx,768
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mov si,modes_table
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call .loops
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test ax,ax
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jz .ok_found_mode
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mov ax,800
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mov bx,600
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mov si,modes_table
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call .loops
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test ax,ax
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jz .ok_found_mode
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mov ax,640
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mov bx,480
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mov si,modes_table
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call .loops
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test ax,ax
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jz .ok_found_mode
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mov si,modes_table
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.ok_found_mode:
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mov word [home_cursor],si
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; mov word [cursor_pos],si
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mov word [preboot_graph],si
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mov ax,si
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.no_zero:
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cmp ax,modes_table
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jb .zerro ;check on correct if bellow
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cmp ax,word [end_cursor]
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ja .zerro ;check on correct if anymore
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mov ecx,long_v_table
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.loop: add ax,size_of_step
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cmp ax,word [end_cursor]
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jae .next_step
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loop .loop
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.next_step:
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sub ax,size_of_step*long_v_table
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cmp ax,modes_table
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jb .zerro
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mov word[home_cursor],ax
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push word [preboot_graph]
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pop word [cursor_pos]
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ret
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;;;;;;;;;;;;;;;;;;;;;;;;;;;
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.loops:
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cmp ax,word [es:si]
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jne .next
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cmp bx,word [es:si+2]
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jne .next
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cmp word [es:si+8],32
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je .ok
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cmp word [es:si+8],24
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je .ok
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.next: add si,size_of_step
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cmp word [es:si],-1
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je .exit
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jmp .loops
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.ok: xor ax,ax
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.exit: ret
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;-----------------------------------------------------------------------------
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default_vmode:
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;-----------------------------------------------------------------------------
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draw_vmodes_table:
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_setcursor 9, 2
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mov si,gr_mode
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call printplain
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mov si,_st
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call printplain
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push word [cursor_pos]
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pop ax
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push word [home_cursor]
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pop si
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mov cx,si
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cmp ax,si
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je .ok
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jb .low
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add cx,size_of_step*long_v_table
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cmp ax,cx
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jb .ok
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sub cx,size_of_step*long_v_table
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add cx,size_of_step
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cmp cx,word[end_cursor]
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jae .ok
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add si,size_of_step
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push si
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pop word [home_cursor]
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jmp .ok
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.low: sub cx,size_of_step
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cmp cx,modes_table
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jb .ok
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push cx
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push cx
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pop word [home_cursor]
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pop si
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.ok:
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mov bp,long_v_table ;show rows
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.@@_next_bit:
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cmp word [es:si+6],0x12
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je .show_0x12
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cmp word [es:si+6],0x13
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je .show_0x13
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movzx eax,word[es:si]
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cmp ax,-1
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je .@@_end
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mov di,_rs+23
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mov ecx,10
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mov bl,4
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call int2str
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movzx eax,word[es:si+2]
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inc di
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mov bl,4
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call int2str
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movzx eax,word[es:si+8]
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inc di
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mov bl,2
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call int2str
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;clear cursor
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mov word[ds:_r1+21],' '
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mov word[ds:_r1+50],' '
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mov word[ds:_r2+21],' '
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mov word[ds:_r2+45],' '
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mov word[ds:_rs+21],' '
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mov word[ds:_rs+46],' '
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cmp si, word [cursor_pos]
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jne .next
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;draw cursor
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mov word[ds:_rs+21],'>>'
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mov word[ds:_rs+46],'<<'
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.next:
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push si
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mov si,_rs
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.@@_sh:
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call printplain
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pop si
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add si,size_of_step
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dec bp
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jnz .@@_next_bit
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.@@_end:
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mov si,_bt
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call printplain
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; show scroll
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push es
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push 0xB800
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pop es
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; arrows
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mov di, (11*80+53)*2
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mov al, 30
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stosb
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add di, 80*2-1
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mov al, 32
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mov cx, scroll_area_size
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@@:
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stosb
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add di, 80*2-1
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loop @b
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mov al, 31
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stosb
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; calculate scroll size
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mov ax, [end_cursor]
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sub ax, modes_table
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mov bx, size_of_step
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cwd
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div bx
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mov si, ax ; si = size of list
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mov ax, [home_cursor]
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sub ax, modes_table
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cwd
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div bx
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mov di, ax
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mov ax, scroll_area_size*long_v_table
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cwd
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div si
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test ax, ax
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jnz @f
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inc ax
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@@:
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cmp al, scroll_area_size
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jb @f
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mov al, scroll_area_size
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@@:
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mov cx, ax
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; cx = scroll height
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; calculate scroll pos
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xor bx, bx ; initialize scroll pos
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sub al, scroll_area_size+1
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neg al
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sub si, long_v_table-1
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jbe .draw_scroll
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mul di
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div si
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mov bx, ax
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.draw_scroll:
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mov al, 0xDB
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imul di, bx, 80*2
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add di, (12*80+53)*2
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@@:
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stosb
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add di, 80*2-1
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loop @b
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pop es
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ret
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.show_0x13:
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push si
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cmp si, word [cursor_pos]
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jne @f
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mov word[ds:_r1+21],'>>'
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mov word[ds:_r1+50],'<<'
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@@:
|
||
mov si,_r1
|
||
jmp .@@_sh
|
||
.show_0x12:
|
||
push si
|
||
cmp si, word [cursor_pos]
|
||
jne @f
|
||
|
||
mov word[ds:_r2+21],'>>'
|
||
mov word[ds:_r2+45],'<<'
|
||
@@:
|
||
mov si,_r2
|
||
jmp .@@_sh
|
||
|
||
;-----------------------------------------------------------------------------
|
||
;Clear arrea of current video page (0xb800)
|
||
clear_vmodes_table:
|
||
pusha
|
||
; draw frames
|
||
push es
|
||
push 0xb800
|
||
pop es
|
||
mov di,1444
|
||
xor ax,ax
|
||
mov ah, 1*16+15
|
||
mov cx,70
|
||
mov bp,12
|
||
.loop_start:
|
||
rep stosw
|
||
mov cx,70
|
||
add di,20
|
||
dec bp ; 㬥<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> DX,
|
||
jns .loop_start
|
||
pop es
|
||
popa
|
||
ret
|
||
|
||
;-----------------------------------------------------------------------------
|
||
|
||
set_vmode:
|
||
push 0 ;0;x1000
|
||
pop es
|
||
|
||
mov si,word [preboot_graph] ;[preboot_graph]
|
||
mov cx,word [es:si+6] ; number of mode
|
||
|
||
|
||
mov ax,word [es:si+0] ; resolution X
|
||
mov bx,word [es:si+2] ; resolution Y
|
||
|
||
|
||
mov word [es:0x900A],ax ; resolution X
|
||
mov word [es:0x900C],bx ; resolution Y
|
||
mov word [es:0x9008],cx ; number of mode
|
||
|
||
cmp cx,0x12
|
||
je .mode0x12_0x13
|
||
cmp cx,0x13
|
||
je .mode0x12_0x13
|
||
|
||
|
||
cmp byte [s_vesa.ver],'2'
|
||
jb .vesa12
|
||
|
||
; VESA 2 and Vesa 3
|
||
|
||
mov ax,0x4f01
|
||
and cx,0xfff
|
||
mov di,mi;0xa000
|
||
int 0x10
|
||
; LFB
|
||
mov eax,[es:mi.PhysBasePtr];di+0x28]
|
||
mov [es:0x9018],eax
|
||
; ---- vbe voodoo
|
||
BytesPerLine equ 0x10
|
||
mov ax, [es:di+BytesPerLine]
|
||
mov [es:0x9001], ax
|
||
; BPP
|
||
cmp [es:mi.BitsPerPixel],16
|
||
jne .l0
|
||
cmp [es:mi.GreenMaskSize],5
|
||
jne .l0
|
||
mov [es:mi.BitsPerPixel],15
|
||
.l0:
|
||
mov al, byte [es:di+0x19]
|
||
mov [es:0x9000], al
|
||
jmp .exit
|
||
|
||
.mode0x12_0x13:
|
||
mov byte [es:0x9000], 32
|
||
or dword [es:0x9018], 0xFFFFFFFF; 0x800000
|
||
|
||
|
||
; VESA 1.2 PM BANK SWITCH ADDRESS
|
||
|
||
.vesa12:
|
||
|
||
|
||
mov ax,0x4f0A
|
||
xor bx,bx
|
||
int 0x10
|
||
xor eax,eax
|
||
xor ebx,ebx
|
||
mov ax,es
|
||
shl eax,4
|
||
mov bx,di
|
||
add eax,ebx
|
||
movzx ebx,word[es:di]
|
||
add eax,ebx
|
||
push 0x0000
|
||
pop es
|
||
mov [es:0x9014],eax
|
||
.exit:
|
||
ret
|
||
|
||
|
||
; mov dword[es:0x9018],0x000A0000
|
||
; ret
|
||
|
||
;=============================================================================
|
||
;=============================================================================
|
||
;=============================================================================
|
||
|