mirror of
https://github.com/KolibriOS/kolibrios.git
synced 2024-12-24 15:46:49 +03:00
326 lines
7.1 KiB
PHP
326 lines
7.1 KiB
PHP
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; ;;
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;; Copyright (C) KolibriOS team 2004-2007. All rights reserved. ;;
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;; Distributed under terms of the GNU General Public License ;;
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;; ;;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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$Revision$
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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 ;temporary cursor storage.
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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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scroll_start dw 0 ;start position of scroll bar
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scroll_end dw 0 ;end position of scroll bar
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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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print_vesa_info:
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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 $
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@@:
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cmp [es:vi.VESASignature],'VESA'
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jne $
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cmp [es:vi.VESAVersion],0x0100
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jb $
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.vesaok2:
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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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.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], 32 ;to show only 32 bpp videomodes
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jb @f
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.l0:
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cmp [es:mi.XRes],800 ; only 800x600 and higher
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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 ; size of record
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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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popad
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ret
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check_first_parm:
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mov si,word [preboot_graph]
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test si,si
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jnz .no_zero ;if no zero
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.zerro:
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mov word[preboot_graph], ax
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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 si,modes_table
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jmp .ok_found_mode
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.no_zero:
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mov bp,word [number_vm]
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cmp bp,word [es:si+6]
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jz .ok_found_mode
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mov ax,word [x_save]
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mov bx,word [y_save]
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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 [preboot_graph],si
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mov ax,si
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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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jae @f
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mov ax,modes_table
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@@:
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mov word [home_cursor],ax
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mov si,[preboot_graph]
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mov word [cursor_pos],si
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push word [es:si]
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pop word [x_save]
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push word [es:si+2]
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pop word [y_save]
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push word [es:si+6]
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pop word [number_vm]
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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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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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ret
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.exit: or ax,-1
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ret
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;-----------------------------------------------------------------------------
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set_vmode:
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push 0 ;0;x1000
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pop es
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mov si,word [preboot_graph] ;[preboot_graph]
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mov cx,word [es:si+6] ; number of mode
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mov ax,word [es:si+0] ; resolution X
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mov bx,word [es:si+2] ; resolution Y
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mov word [es:0x900A],ax ; resolution X
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mov word [es:0x900C],bx ; resolution Y
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mov word [es:0x9008],cx ; number of mode
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; VESA 2 and Vesa 3 only
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mov ax,0x4f01
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and cx,0xfff
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mov di,mi;0xa000
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int 0x10
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; LFB
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mov eax,[es:mi.PhysBasePtr] ;di+0x28]
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mov [es:0x9018],eax
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; ---- vbe voodoo
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BytesPerLine equ 0x10
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mov ax, [es:di+BytesPerLine]
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mov [es:0x9001], ax
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; BPP
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.l0:
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mov al, byte [es:di+0x19]
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mov [es:0x9000], al
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jmp .exit
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.exit:
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ret
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;=============================================================================
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