;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; ;;
;; Copyright (C) KolibriOS team 2004-2007. All rights reserved. ;;
;; Distributed under terms of the GNU General Public License ;;
;; ;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
$Revision: 1700 $
struc VBE_VGAInfo {
.VESASignature dd ? ; char
.VESAVersion dw ? ; short
.OemStringPtr dd ? ; char *
.Capabilities dd ? ; ulong
.VideoModePtr dd ? ; ulong
.TotalMemory dw ? ; short
; VBE 2.0+
.OemSoftwareRev db ? ; short
.OemVendorNamePtr dw ? ; char *
.OemProductNamePtr dw ? ; char *
.OemProductRevPtr dw ? ; char *
.reserved rb 222 ; char
.OemData rb 256 ; char
}
struc VBE_ModeInfo {
.ModeAttributes dw ? ; short
.WinAAttributes db ? ; char
.WinBAttributes db ? ; char
.WinGranularity dw ? ; short
.WinSize dw ? ; short
.WinASegment dw ? ; ushort
.WinBSegment dw ? ; ushort
.WinFuncPtr dd ? ; void *
.BytesPerScanLine dw ? ; short
.XRes dw ? ; short
.YRes dw ? ; short
.XCharSize db ? ; char
.YCharSize db ? ; char
.NumberOfPlanes db ? ; char
.BitsPerPixel db ? ; char
.NumberOfBanks db ? ; char
.MemoryModel db ? ; char
.BankSize db ? ; char
.NumberOfImagePages db ? ; char
.res1 db ? ; char
.RedMaskSize db ? ; char
.RedFieldPosition db ? ; char
.GreenMaskSize db ? ; char
.GreenFieldPosition db ? ; char
.BlueMaskSize db ? ; char
.BlueFieldPosition db ? ; char
.RsvedMaskSize db ? ; char
.RsvedFieldPosition db ? ; char
.DirectColorModeInfo db ? ; char ; MISSED IN THIS TUTORIAL!! SEE ABOVE
; VBE 2.0+
.PhysBasePtr dd ? ; ulong
.OffScreenMemOffset dd ? ; ulong
.OffScreenMemSize dw ? ; short
; VBE 3.0+
.LinbytesPerScanLine dw ? ; short
.BankNumberOfImagePages db ? ; char
.LinNumberOfImagePages db ? ; char
.LinRedMaskSize db ? ; char
.LinRedFieldPosition db ? ; char
.LingreenMaskSize db ? ; char
.LinGreenFieldPosition db ? ; char
.LinBlueMaskSize db ? ; char
.LinBlueFieldPosition db ? ; char
.LinRsvdMaskSize db ? ; char
.LinRsvdFieldPosition db ? ; char
.MaxPixelClock dd ? ; ulong
.res2 rb 190 ; char
}
virtual at $A000
vi VBE_VGAInfo
mi VBE_ModeInfo
modes_table:
end virtual
cursor_pos dw 0 ;âðåìåííîå õðàíåíèå êóðñîðà.
home_cursor dw 0 ;current shows rows a table
end_cursor dw 0 ;end of position current shows rows a table
scroll_start dw 0 ;start position of scroll bar
scroll_end dw 0 ;end position of scroll bar
long_v_table equ 9 ;long of visible video table
size_of_step equ 10
scroll_area_size equ (long_v_table-2)
int2str:
dec bl
jz @f
xor edx,edx
div ecx
push edx
call int2str
pop eax
@@: or al,0x30
mov [ds:di],al
inc di
ret
int2strnz:
cmp eax,ecx
jb @f
xor edx,edx
div ecx
push edx
call int2strnz
pop eax
@@: or al,0x30
mov [es:di],al
inc di
ret
;-------------------------------------------------------
;Write message about incorrect v_mode and write message about jmp on swith v_mode
v_mode_error:
_setcursor 19,2
mov si, fatalsel
call printplain
_setcursor 20,2
mov si,pres_key
call printplain
xor eax,eax
int 16h
jmp cfgmanager.d
;-------------------------------------------------------
;
;-------------------------------------------------------
print_vesa_info:
_setcursor 5,2
mov [es:vi.VESASignature],'VBE2'
mov ax,0x4F00
mov di,vi ;0xa000
int 0x10
or ah,ah
jz @f
mov [es:vi.VESASignature],'VESA'
mov ax,$4F00
mov di,vi
int 0x10
or ah,ah
jnz .exit
@@:
cmp [es:vi.VESASignature],'VESA'
jne .exit
cmp [es:vi.VESAVersion],0x0100
jb .exit
jmp .vesaok2
.exit:
mov si,novesa
call printplain
ret
.vesaok2:
mov ax,[es:vi.VESAVersion]
add ax,'00'
mov [s_vesa.ver], ah
mov [s_vesa.ver+2], al
mov si,s_vesa
call printplain
_setcursor 4,2
mov si,word[es:vi.OemStringPtr]
mov di,si
push ds
mov ds,word[es:vi.OemStringPtr+2]
call printplain
pop ds
ret
;-----------------------------------------------------------------------------
calc_vmodes_table:
pushad
; push 0
; pop es
lfs si, [es:vi.VideoModePtr]
mov bx,modes_table
.next_mode:
mov cx,word [fs:si] ; mode number
cmp cx,-1
je .modes_ok.2
mov ax,0x4F01
mov di,mi
int 0x10
or ah,ah
jnz .modes_ok.2 ;vesa_info.exit
test [es:mi.ModeAttributes],00000001b ;videomode support ?
jz @f
test [es:mi.ModeAttributes],00010000b ;picture ?
jz @f
test [es:mi.ModeAttributes],10000000b ;LFB ?
jz @f
cmp [es:mi.BitsPerPixel], 32 ;to show only 32 bpp videomodes
jb @f
.l0:
cmp [es:mi.XRes],800 ; only 800x600 and higher
jb @f
mov ax,[es:mi.XRes]
mov [es:bx+0],ax ; +0[2] : resolution X
mov ax,[es:mi.YRes]
mov [es:bx+2],ax ; +2[2] : resolution Y
mov ax,[es:mi.ModeAttributes]
mov [es:bx+4],ax ; +4[2] : attributes
;<< cmp [s_vesa.ver],'2'
;<< jb .lp1
or cx,0x4000 ; use LFB <<< ?
.lp1: mov [es:bx+6],cx ; +6 : mode number
movzx ax,byte [es:mi.BitsPerPixel]
mov word [es:bx+8],ax ; +8 : bits per pixel << ?
add bx,size_of_step ; size of record
@@:
add si,2
jmp .next_mode
.modes_ok.2:
mov word[es:bx],-1 ;end video table
mov word[end_cursor],bx ;save end cursor position
popad
ret
;-----------------------------------------------------------------------------
;draw_current_vmode:
; push 0
; pop es
; mov si,word [cursor_pos]
; cmp word [es:si+6],0x12
; je .no_vesa_0x12
; cmp word [es:si+6],0x13
; je .no_vesa_0x13
; mov di,loader_block_error
; movzx eax,word[es:si+0]
; mov ecx,10
; call int2strnz
; mov byte[es:di],'x'
; inc di
; movzx eax,word[es:si+2]
; call int2strnz
; mov byte[es:di],'x'
; inc di
; movzx eax,word[es:si+8]
; call int2strnz
; mov dword[es:di],0x00000d0a
; mov si,loader_block_error
; push ds
; push es
; pop ds
; call printplain
; pop ds
; ret
;.no_vesa_0x13:
; mov si,mode0
; jmp .print
;.no_vesa_0x12:
; mov si,mode9
;.print:
; call printplain
; ret
;-----------------------------------------------------------------------------
check_first_parm:
mov si,word [preboot_graph]
test si,si
jnz .no_zero ;if no zero
.zerro:
; mov ax,modes_table
; mov word [cursor_pos],ax
; mov word [home_cursor],ax
; mov word [preboot_graph],ax
;SET default video of mode first probe will fined a move of work 1024x768@32
mov ax,1024
mov bx,768
mov si,modes_table
call .loops
test ax,ax
jz .ok_found_mode
mov si,modes_table
jmp .ok_found_mode
.no_zero:
mov bp,word [number_vm]
cmp bp,word [es:si+6]
jz .ok_found_mode
mov ax,word [x_save]
mov bx,word [y_save]
mov si,modes_table
call .loops
test ax,ax
jz .ok_found_mode
mov si,modes_table
.ok_found_mode:
mov word [home_cursor],si
mov word [preboot_graph],si
mov ax,si
mov ecx,long_v_table
.loop: add ax,size_of_step
cmp ax,word [end_cursor]
jae .next_step
loop .loop
.next_step:
sub ax,size_of_step*long_v_table
cmp ax,modes_table
jae @f
mov ax,modes_table
@@:
mov word [home_cursor],ax
mov si,[preboot_graph]
mov word [cursor_pos],si
push word [es:si]
pop word [x_save]
push word [es:si+2]
pop word [y_save]
push word [es:si+6]
pop word [number_vm]
ret
;;;;;;;;;;;;;;;;;;;;;;;;;;;
.loops:
cmp ax,word [es:si]
jne .next
cmp bx,word [es:si+2]
jne .next
je .ok
.next: add si,size_of_step
cmp word [es:si],-1
je .exit
jmp .loops
.ok: xor ax,ax
ret
.exit: or ax,-1
ret
;-----------------------------------------------------------------------------
;default_vmode:
;-----------------------------------------------------------------------------
draw_vmodes_table:
; _setcursor 9, 2
; mov si,gr_mode
; call printplain
; mov si,_st
; call printplain
; push word [cursor_pos]
; pop ax
; push word [home_cursor]
; pop si
; mov cx,si
; cmp ax,si
; je .ok
; jb .low
; add cx,size_of_step*long_v_table
; cmp ax,cx
; jb .ok
; sub cx,size_of_step*long_v_table
; add cx,size_of_step
; cmp cx,word[end_cursor]
; jae .ok
; add si,size_of_step
; push si
; pop word [home_cursor]
; jmp .ok
;.low: sub cx,size_of_step
; cmp cx,modes_table
; jb .ok
; push cx
; push cx
; pop word [home_cursor]
; pop si
;.ok:
; calculate scroll position
; push si
; mov ax, [end_cursor]
; sub ax, modes_table
; mov bx, size_of_step
; cwd
; div bx
; mov si, ax ; si = size of list
; mov ax, [home_cursor]
; sub ax, modes_table
; cwd
; div bx
; mov di, ax
; mov ax, scroll_area_size*long_v_table
; cwd
; div si
; test ax, ax
; jnz @f
; inc ax
;@@:
; cmp al, scroll_area_size
; jb @f
; mov al, scroll_area_size
;@@:
; mov cx, ax
; cx = scroll height
; calculate scroll pos
; xor bx, bx ; initialize scroll pos
; sub al, scroll_area_size+1
; neg al
; sub si, long_v_table-1
; jbe @f
; mul di
; div si
; mov bx, ax
;@@:
; inc bx
; imul ax, bx, size_of_step
; add ax, [home_cursor]
; mov [scroll_start], ax
; imul cx, size_of_step
; add ax, cx
; mov [scroll_end], ax
; pop si
; mov bp,long_v_table ;show rows
;.@@_next_bit:
;clear cursor
; mov ax,' '
; mov word[ds:_r1+21],ax
; mov word[ds:_r1+50],ax
; mov word[ds:_r2+21],ax
; mov word[ds:_r2+45],ax
; mov word[ds:_rs+21],ax
; mov word[ds:_rs+46],ax
; draw string
; cmp word [es:si+6],0x12
; je .show_0x12
; cmp word [es:si+6],0x13
; je .show_0x13
; movzx eax,word[es:si]
; cmp ax,-1
; je .@@_end
; mov di,_rs+23
; mov ecx,10
; mov bl,4
; call int2str
; movzx eax,word[es:si+2]
; inc di
; mov bl,4
; call int2str
; movzx eax,word[es:si+8]
; inc di
; mov bl,2
; call int2str
; cmp si, word [cursor_pos]
; jne .next
;draw cursor
; mov word[ds:_rs+21],'>>'
; mov word[ds:_rs+46],'<<'
;.next:
; push si
; mov si,_rs
;.@@_sh:
; add to the string pseudographics for scrollbar
; pop bx
; push bx
; mov byte [si+53], ' '
; cmp bx, [scroll_start]
; jb @f
; cmp bx, [scroll_end]
; jae @f
; mov byte [si+53], 0xDB ; filled bar
;@@:
; push bx
; add bx, size_of_step
; cmp bx, [end_cursor]
; jnz @f
; mov byte [si+53], 31 ; 'down arrow' symbol
;@@:
; sub bx, [home_cursor]
; cmp bx, size_of_step*long_v_table
; jnz @f
; mov byte [si+53], 31 ; 'down arrow' symbol
;@@:
; pop bx
; cmp bx, [home_cursor]
; jnz @f
; mov byte [si+53], 30 ; 'up arrow' symbol
;@@:
; call printplain
; pop si
; add si,size_of_step
; dec bp
; jnz .@@_next_bit
;.@@_end:
; mov si,_bt
; call printplain
ret
;.show_0x13:
; push si
; cmp si, word [cursor_pos]
; jne @f
; mov word[ds:_r1+21],'>>'
; mov word[ds:_r1+50],'<<'
;@@:
; 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 area 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
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
; VESA 2 and Vesa 3 only
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
.l0:
mov al, byte [es:di+0x19]
mov [es:0x9000], al
jmp .exit
.exit:
ret
;=============================================================================