;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; ;;
;; Copyright (C) KolibriOS team 2004-2024. All rights reserved. ;;
;; Distributed under terms of the GNU General Public License ;;
;; ;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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 ;временное хранение курсора.
cursor_pos_old dw 0
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 = 9 ;long of visible video table
size_of_step = 10
scroll_area_size = 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
;save no vesa mode of work 320x200, EGA/CGA 256 梥⮢ and 640x480, VGA 16 梥⮢
mov word [es:bx], 640
mov word [es:bx+2], 480
mov word [es:bx+6], 0x13
mov word [es:bx+10], 640
mov word [es:bx+12], 480
mov word [es:bx+16], 0x12
add bx, 20
.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], 16 ;List only supported videomodes (16, 24 and 32 bpp)
jb @f
; 16 bpp might actually be 15 bpp
cmp [es:mi.BitsPerPixel], 16
jne .l0
cmp [es:mi.GreenMaskSize], 5
jne .l0
; mov [es:mi.BitsPerPixel],15
jmp @f ; 15 bpp isnt supported ATM
.l0:
cmp [es:mi.XRes], 640
jb @f
cmp [es:mi.YRes], 480
jb @f
; cmp [es:mi.BitsPerPixel],8
; 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
jb @f ; We do not use Vesa 1.2 mode is now
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
;;;;;;;;;;;;;;;;;;
;Sort array
; mov si,modes_table
;.new_mode:
; mov ax,word [es:si]
; cmp ax,-1
; je .exxit
; add ax,word [es:si+2]
; add ax,word [es:si+8]
; mov bp,si
;.again:
; add bp,12
; mov bx,word [es:bp]
; cmp bx,-1
; je .exit
; add bx,word [es:bp+2]
; add bx,word [es:bp+8]
;
; cmp ax,bx
; ja .loops
; jmp .again
;.loops:
; push dword [es:si]
; push dword [es:si+4]
; push dword [es:si+8]
; push dword [es:bp]
; push dword [es:bp+4]
; push dword [es:bp+8]
;
; pop dword [es:si+8]
; pop dword [es:si+4]
; pop dword [es:si]
; pop dword [es:bp+8]
; pop dword [es:bp+4]
; pop dword [es:bp]
; jmp .new_mode
;
;.exit: add si,12
; jmp .new_mode
;.exxit:
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
if defined extended_primary_loader
mov di, config_file_variables
else
mov di, loader_block_error
end if
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
if defined extended_primary_loader
mov si, config_file_variables
else
mov si, loader_block_error
end if
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:
if defined extended_primary_loader
mov cx, [number_vm]
jcxz .novbemode
mov si, modes_table
.findvbemode:
cmp [es:si+6], cx
jnz @f
cmp word [es:si+8], 32
je .ok_found_mode
cmp word [es:si+8], 24
je .ok_found_mode
cmp word [es:si+8], 16
je .ok_found_mode
@@:
add si, size_of_step
cmp word [es:si], -1
jnz .findvbemode
.novbemode:
mov ax, [x_save]
test ax, ax
jz .zerro
mov bx, [y_save]
mov si, modes_table
call .loops
test ax, ax
jz .ok_found_mode
else
mov si, word [preboot_graph]
test si, si
jnz .no_zero ;if no zero
end if
.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 cx, 32
.find_mode:
mov ax, 1024
mov bx, 768
mov si, modes_table
call .loops
test ax, ax
jz .ok_found_mode
mov ax, 800
mov bx, 600
mov si, modes_table
call .loops
test ax, ax
jz .ok_found_mode
mov ax, 640
mov bx, 480
mov si, modes_table
call .loops
test ax, ax
jz .ok_found_mode
sub cx, 8
jnz .find_mode
mov si, modes_table
if ~ defined extended_primary_loader
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
; cmp ax,modes_table
; jb .zerro ;check on correct if bellow
; cmp ax,word [end_cursor]
; ja .zerro ;check on correct if anymore
end if
.ok_found_mode:
mov word [home_cursor], si
; mov word [cursor_pos],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
jcxz @f
cmp cx, word [es:si+8]
jne .next
@@:
xor ax, ax
ret
.next:
add si, size_of_step
cmp word [es:si], -1
je .exit
jmp .loops
.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 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, 77
mov bp, 12
.loop_start:
rep stosw
mov cx, 77
add di, 6
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:BOOT_LO.x_res], ax ; resolution X
mov word [es:BOOT_LO.y_res], bx ; resolution Y
mov word [es:BOOT_LO.vesa_mode], 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:BOOT_LO.lfb], eax
; ---- vbe voodoo
BytesPerLine = 0x10
mov ax, [es:di+BytesPerLine]
mov [es:BOOT_LO.pitch], 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:BOOT_LO.bpp], al
jmp .exit
.mode0x12_0x13:
mov byte [es:BOOT_LO.bpp], 32
or dword [es:BOOT_LO.lfb], 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:BOOT_LO.bank_sw], eax
.exit:
ret
;=============================================================================
;=============================================================================
;=============================================================================