1267 lines
31 KiB
PHP
1267 lines
31 KiB
PHP
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; ;;
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;; BOOTCODE.INC ;;
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;; ;;
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;; KolibriOS 16-bit loader, ;;
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;; based on bootcode for MenuetOS ;;
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;; ;;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;==========================================================================
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;
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; 16 BIT FUNCTIONS
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;
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;==========================================================================
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include 'drawtext.inc'
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; 16-bit data
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org $+0x10000
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old_ints_h:
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dw 0x400
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dd 0
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dw 0
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kernel_restart_bootblock:
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db 1 ; version
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dw 1 ; floppy image is in memory
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dd 0 ; cannot save parameters
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align 32
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; GDT TABLE
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gdts:
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dw gdte-$-1
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dd gdts
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dw 0
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; Attention! The order first four selectors not to change, is used in Fast System Call
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; must be : os_code, os_data, app_code, app_data, ....
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int_code_l:
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os_code_l:
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dw 0xffff
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dw 0x0000
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db 0x00
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dw 11011111b *256 +10011010b
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db 0x00
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int_data_l:
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os_data_l:
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dw 0xffff
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dw 0x0000
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db 0x00
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dw 11011111b *256 +10010010b
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db 0x00
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app_code_l:
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dw 0xFFFF
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dw 0
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db 0
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db cpl3
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dw G32+D32+0x8000+0x7;
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app_data_l:
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dw 0xFFFF
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dw 0
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db 0
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db drw3
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dw G32+D32+0x8000+0x7;
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; --------------- APM ---------------------
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apm_code_32:
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dw 0x0f ; limit 64kb
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db 0, 0, 0
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dw 11010000b *256 +10011010b
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db 0x00
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apm_code_16:
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dw 0x0f
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db 0, 0, 0
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dw 10010000b *256 +10011010b
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db 0x00
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apm_data_16:
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dw 0x0f
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db 0, 0, 0
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dw 10010000b *256 +10010010b
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db 0x00
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; -----------------------------------------
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graph_data_l:
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dw 0x7ff
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dw 0x0000
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db 0x00
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dw 11010000b *256 +11110010b
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db 0x00
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tss0_l:
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; times (max_processes+10) dd 0,0
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gdte = $ + (max_processes+10)*8
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; table for move to extended memory (int 15h, ah=87h)
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movedesc:
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db 0x00,0x00,0x0,0x00,0x00,0x00,0x0,0x0
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db 0x00,0x00,0x0,0x00,0x00,0x00,0x0,0x0
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db 0xff,0xff,0x0,0xa0,0x00,0x93,0x0,0x0
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db 0xff,0xff,0x0,0x00,0x10,0x93,0x0,0x0
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db 0x00,0x00,0x0,0x00,0x00,0x00,0x0,0x0
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db 0x00,0x00,0x0,0x00,0x00,0x00,0x0,0x0
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db 0x00,0x00,0x0,0x00,0x00,0x00,0x0,0x0
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db 0x00,0x00,0x0,0x00,0x00,0x00,0x0,0x0
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org $-0x10000
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putchar:
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; in: al=character
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mov ah, 0Eh
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mov bh, 0
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int 10h
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ret
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print:
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; in: si->string
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mov al, 186
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call putchar
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mov al, ' '
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call putchar
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printplain:
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; in: si->string
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pusha
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lodsb
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@@:
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call putchar
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lodsb
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cmp al, 0
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jnz @b
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popa
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ret
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; Now int 16 is used for keyboard support.
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; This is shorter, simpler and more reliable.
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if 0
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getkey: push ecx
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push edx
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add ebx,0x0101
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xor eax,eax
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gk1:
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in al,0x60
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mov cl,al
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gk0:
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in al,0x60
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cmp al,cl
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je gk0
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cmp ax,11
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jg gk0
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gk0_1:
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mov cl,al
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; add al,47
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; mov [ds:keyinbs-0x10000],al
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; mov si,keyinbs-0x10000
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; call printplain
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gk12:
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in al,0x60
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cmp al,cl
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je gk12
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cmp ax,240
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jne gk13
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mov al,cl
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jmp gk14
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gk13:
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add cl,128
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cmp al,cl
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jne gk1
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sub al,128
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gk14:
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movzx edx,bl
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cmp eax,edx
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jb gk1
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movzx edx,bh
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cmp eax,edx
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jg gk1
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test ebx,0x010000
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jnz gk3
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mov cx,0x1000
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mov dx,cx
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add eax,47
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mov cx,ax
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cmp cx,58
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jb gk_nozero
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sub cx,10
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gk_nozero:
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mov [ds:keyin-0x10000],cl
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mov si,keyin-0x10000
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call printplain
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gk3:
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sub eax,48
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pop edx
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pop ecx
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ret
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end if
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getkey:
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; get number in range [bl,bh] (bl,bh in ['0'..'9'])
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; in: bx=range
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; out: ax=digit (1..9, 10 for 0)
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mov ah, 0
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int 16h
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cmp al, bl
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jb getkey
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cmp al, bh
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ja getkey
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push ax
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call putchar
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pop ax
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and ax, 0Fh
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jnz @f
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mov al, 10
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@@:
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ret
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setcursor:
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; in: dl=column, dh=row
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mov ah, 2
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mov bh, 0
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int 10h
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ret
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macro _setcursor row,column
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{
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mov dx, row*256 + column
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call setcursor
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}
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;pagetable_set:
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;eax - physical address
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;es:di - page table
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;ecx - number of pages to map
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; or al, 7
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;@@:
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; stosd
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; add eax, 1000h
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; loop @b
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; ret
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boot_read_floppy:
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push si
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xor si, si
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mov ah, 2 ; read
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@@:
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push ax
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int 0x13
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pop ax
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jnc @f
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inc si
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cmp si, 10
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jb @b
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mov si, badsect-0x10000
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sayerr_plain:
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call printplain
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jmp $
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@@:
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pop si
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ret
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include 'bootvesa.inc'
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;=========================================================================
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;
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; 16 BIT CODE
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;
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;=========================================================================
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start_of_code:
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cld
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; \begin{diamond}[02.12.2005]
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cmp ax, 'KL'
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jnz @f
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mov word [cs:cfgmanager.loader_block-0x10000], si
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mov word [cs:cfgmanager.loader_block+2-0x10000], ds
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@@:
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; \end{diamond}[02.12.2005]
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; set up stack
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mov ax, 3000h
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mov ss, ax
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mov sp, 0EC00h
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; set up segment registers
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push cs
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pop ds
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push cs
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pop es
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; set videomode
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mov ax, 3
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int 0x10
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if lang eq ru
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; Load & set russian VGA font (RU.INC)
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mov bp,RU_FNT1-10000h ; RU_FNT1 - First part
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mov bx,1000h ; 768 bytes
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mov cx,30h ; 48 symbols
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mov dx,80h ; 128 - position of first symbol
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mov ax,1100h
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int 10h
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mov bp,RU_FNT2-10000h ; RU_FNT2 -Second part
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mov bx,1000h ; 512 bytes
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mov cx,20h ; 32 symbols
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mov dx,0E0h ; 224 - position of first symbol
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mov ax,1100h
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int 10h
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; End set VGA russian font
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else if lang eq et
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mov bp,ET_FNT-10000h ; ET_FNT1
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mov bx,1000h ;
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mov cx,255 ; 256 symbols
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mov dx,0h ; 0 - position of first symbol
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mov ax,1100h
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int 10h
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end if
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; draw frames
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push 0xb800
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pop es
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xor di, di
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; mov si,d80x25-0x10000
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; mov cx,80*25
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; mov ah,1*16+15
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; dfl1:
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; lodsb
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; stosw
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; loop dfl1
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mov ah, 1*16+15
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; draw top
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mov si, d80x25_top - 0x10000
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mov cx, d80x25_top_num * 80
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@@:
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lodsb
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stosw
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loop @b
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; draw spaces
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mov si, space_msg - 0x10000
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mov cx, 25 - d80x25_top_num - d80x25_bottom_num
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dfl1:
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push cx
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push si
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mov cx, 80
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@@:
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lodsb
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stosw
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loop @b
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pop si
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pop cx
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loop dfl1
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; draw bottom
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mov si, d80x25_bottom - 0x10000
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mov cx, d80x25_bottom_num * 80
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@@:
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lodsb
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stosw
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loop @b
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mov byte [space_msg-0x10000+80], 0 ; now space_msg is null terminated
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_setcursor d80x25_top_num,0
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; TEST FOR 386+
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mov bx, 0x4000
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pushf
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pop ax
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mov dx,ax
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xor ax,bx
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push ax
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popf
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pushf
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pop ax
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and ax,bx
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and dx,bx
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cmp ax,dx
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jnz cpugood
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mov si,not386-0x10000
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sayerr:
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call print
|
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jmp $
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cpugood:
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; set up esp
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movzx esp, sp
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; FLUSH 8042 KEYBOARD CONTROLLER
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;// mike.dld [
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; mov al,0xED
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; out 0x60,al
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; or cx,-1
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; @@:
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; in al,0x64
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; test al,2
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; jz @f
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; loop @b
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; @@:
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; mov al,0
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; out 0x60,al
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; or cx,-1
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; @@:
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; in al,0x64
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; test al,2
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; jz @f
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; loop @b
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; @@:
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;// mike.dld ]
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; mov ecx,10000
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; fl1:
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; in al,0x64
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; loop fl1
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; test al,1
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; jz fl2
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; in al,0x60
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; jmp fl1
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; fl2:
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;****************************************************************
|
||
; The function is modified Mario79
|
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;*****************************************************************
|
||
; wait_kbd: ; variant 1
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; mov cx,2500h ;<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 10 <EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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; test_kbd:
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; in al,64h ;<EFBFBD><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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; test al,2 ;<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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; loopnz test_kbd
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push 0
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pop es
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and word [es:0x9031], 0
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; \begin{Mario79}
|
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; find HDD IDE DMA PCI device
|
||
; check for PCI BIOS
|
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mov ax, 0xB101
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int 0x1A
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jc .nopci
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cmp edx, 'PCI '
|
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jnz .nopci
|
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; find PCI class code
|
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; class 1 = mass storage
|
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; subclass 1 = IDE controller
|
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; a) class 1, subclass 1, programming interface 0x80
|
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mov ax, 0xB103
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mov ecx, 1*10000h + 1*100h + 0x80
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mov si, 0 ; device index = 0
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int 0x1A
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jnc .found
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; b) class 1, subclass 1, programming interface 0x8A
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mov ax, 0xB103
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mov ecx, 1*10000h + 1*100h + 0x8A
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mov si, 0 ; device index = 0
|
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int 0x1A
|
||
jnc .found
|
||
; c) class 1, subclass 1, programming interface 0x85
|
||
mov ax, 0xB103
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mov ecx, 1*10000h + 1*100h + 0x85
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mov si, 0
|
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int 0x1A
|
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jc .nopci
|
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.found:
|
||
; get memory base
|
||
mov ax, 0xB10A
|
||
mov di, 0x20 ; memory base is config register at 0x20
|
||
int 0x1A
|
||
jc .nopci
|
||
and cx, 0xFFF0 ; clear address decode type
|
||
mov [es:0x9031], cx
|
||
.nopci:
|
||
; \end{Mario79}
|
||
|
||
mov al,0xf6 ; <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>, <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
|
||
out 0x60,al
|
||
xor cx,cx
|
||
wait_loop: ; variant 2
|
||
; reading state of port of 8042 controller
|
||
in al,64h
|
||
and al,00000010b ; ready flag
|
||
; wait until 8042 controller is ready
|
||
loopnz wait_loop
|
||
|
||
; --------------- APM ---------------------
|
||
push 0
|
||
pop es
|
||
mov word [es : 0x9044], 0 ; ver = 0.0 (APM not found)
|
||
mov ax, 0x5300
|
||
xor bx, bx
|
||
int 0x15
|
||
jc apm_end ; APM not found
|
||
test cx, 2
|
||
jz apm_end ; APM 32-bit protected-mode interface not supported
|
||
mov [es : 0x9044], ax ; Save APM Version
|
||
mov [es : 0x9046], cx ; Save APM flags
|
||
|
||
; Write APM ver ----
|
||
and ax, 0xf0f
|
||
add ax, '00'
|
||
mov si, msg_apm - 0x10000
|
||
mov [si + 5], ah
|
||
mov [si + 7], al
|
||
_setcursor 0, 3
|
||
call printplain
|
||
_setcursor d80x25_top_num,0
|
||
; ------------------
|
||
|
||
mov ax, 0x5304 ; Disconnect interface
|
||
xor bx, bx
|
||
int 0x15
|
||
mov ax, 0x5303 ; Connect 32 bit mode interface
|
||
xor bx, bx
|
||
int 0x15
|
||
; init selectors
|
||
movzx eax, ax ; real-mode segment base address of protected-mode 32-bit code segment
|
||
shl eax, 4
|
||
mov [apm_code_32 - 0x10000 + 2], ax
|
||
shr eax, 16
|
||
mov [apm_code_32 - 0x10000 + 4], al
|
||
movzx ecx, cx ; real-mode segment base address of protected-mode 16-bit code segment
|
||
shl ecx, 4
|
||
mov [apm_code_16 - 0x10000 + 2], cx
|
||
shr ecx, 16
|
||
mov [apm_code_16 - 0x10000 + 4], cl
|
||
movzx edx, dx ; real-mode segment base address of protected-mode 16-bit data segment
|
||
shl edx, 4
|
||
mov [apm_data_16 - 0x10000 + 2], dx
|
||
shr edx, 16
|
||
mov [apm_data_16 - 0x10000 + 4], dl
|
||
mov [es : 0x9040], ebx ; offset of APM entry point
|
||
apm_end:
|
||
; -----------------------------------------
|
||
|
||
; DISPLAY VESA INFORMATION
|
||
|
||
call print_vesa_info
|
||
|
||
; \begin{diamond}[30.11.2005]
|
||
cfgmanager:
|
||
; settings:
|
||
; a) preboot_graph = graphical mode
|
||
; preboot_gprobe = probe this mode?
|
||
; b) preboot_dma_write = use DMA write?
|
||
; c) preboot_vrrm = use VRR?
|
||
; d) preboot_device = from what boot?
|
||
mov di, preboot_graph-0x10000
|
||
; check bootloader block
|
||
cmp [.loader_block-0x10000], -1
|
||
jz .noloaderblock
|
||
les bx, [.loader_block-0x10000]
|
||
cmp byte [es:bx], 1
|
||
mov si, loader_block_error-0x10000
|
||
jnz sayerr
|
||
test byte [es:bx+1], 1
|
||
jz @f
|
||
; image in memory present
|
||
cmp [di+preboot_device-preboot_graph], 0
|
||
jnz @f
|
||
mov [di+preboot_device-preboot_graph], 3
|
||
@@:
|
||
.noloaderblock:
|
||
; determine default settings
|
||
mov [.bSettingsChanged-0x10000], 0
|
||
call calc_vmodes_table
|
||
.preboot_gr_end:
|
||
cmp [di+preboot_dma_write-preboot_graph], 1
|
||
adc [di+preboot_dma_write-preboot_graph], 0
|
||
cmp [di+preboot_vrrm-preboot_graph], 1
|
||
adc [di+preboot_vrrm-preboot_graph], 0
|
||
cmp [di+preboot_device-preboot_graph], 1
|
||
adc [di+preboot_device-preboot_graph], 0
|
||
; notify user
|
||
mov si, linef-0x10000
|
||
call print
|
||
mov si, start_msg-0x10000
|
||
call print
|
||
mov si, time_msg-0x10000
|
||
call print
|
||
; get start time
|
||
call .gettime
|
||
mov [.starttime-0x10000], eax
|
||
mov word [.timer-0x10000], .newtimer
|
||
mov word [.timer-0x10000+2], cs
|
||
.printcfg:
|
||
_setcursor 9,0
|
||
mov si, current_cfg_msg-0x10000
|
||
call print
|
||
mov si, curvideo_msg-0x10000
|
||
call print
|
||
call draw_current_vmode
|
||
mov si, linef-0x10000
|
||
call printplain
|
||
mov si, dma_msg-0x10000
|
||
cmp [preboot_dma_write-0x10000], 1
|
||
call .say_on_off
|
||
mov si, vrrm_msg-0x10000
|
||
cmp [preboot_vrrm-0x10000], 1
|
||
call .say_on_off
|
||
mov si, preboot_device_msg-0x10000
|
||
call print
|
||
mov al, [preboot_device-0x10000]
|
||
and eax, 3
|
||
mov si, [preboot_device_msgs-0x10000+eax*2]
|
||
call printplain
|
||
.wait:
|
||
_setcursor 25,0 ; out of screen
|
||
; set timer interrupt handler
|
||
cli
|
||
push 0
|
||
pop es
|
||
mov eax, [es:8*4]
|
||
mov [.oldtimer-0x10000], eax
|
||
mov eax, [.timer-0x10000]
|
||
mov [es:8*4], eax
|
||
sti
|
||
; wait for keypressed
|
||
mov ah, 0
|
||
int 16h
|
||
push ax
|
||
; restore timer interrupt
|
||
push 0
|
||
pop es
|
||
mov eax, [.oldtimer-0x10000]
|
||
mov [es:8*4], eax
|
||
mov [.timer-0x10000], eax
|
||
_setcursor (d80x25_top_num+3),0
|
||
mov si, space_msg-0x10000
|
||
call printplain
|
||
pop ax
|
||
; switch on key
|
||
cmp al, 13
|
||
jz .continue
|
||
or al, 20h
|
||
cmp al, 'a'
|
||
jz .change_a
|
||
cmp al, 'b'
|
||
jz .change_b
|
||
cmp al, 'c'
|
||
jz .change_c
|
||
cmp al, 'd'
|
||
jnz .wait
|
||
_setcursor 15,0
|
||
mov si,bdev-0x10000
|
||
call print
|
||
mov bx,'13'
|
||
call getkey
|
||
mov [preboot_device-0x10000], al
|
||
_setcursor 13,0
|
||
.d:
|
||
mov [.bSettingsChanged-0x10000], 1
|
||
mov si, space_msg-0x10000
|
||
call printplain
|
||
_setcursor 15,0
|
||
mov cx, 6
|
||
@@:
|
||
call printplain
|
||
loop @b
|
||
jmp .printcfg
|
||
.change_a:
|
||
.lp0: call draw_vmodes_table
|
||
.lp1: mov al,[vm_row]
|
||
sub al,[ln_top]
|
||
jge @f
|
||
dec [ln_top]
|
||
jmp .lp0
|
||
@@: cmp al,[ln_num]
|
||
jl .lp2
|
||
inc [ln_top]
|
||
jmp .lp0
|
||
.lp2: mov cx,0x1A1B
|
||
call draw_vmodes_table_cursor
|
||
mov ax,0x0000
|
||
int 0x16
|
||
push ax
|
||
mov cx,' ';0x1A1B
|
||
call draw_vmodes_table_cursor
|
||
pop ax
|
||
cmp ah,0x48;x,0x48E0 ; up
|
||
jne @f
|
||
dec [vm_row]
|
||
jge .lp1
|
||
mov [vm_row],0
|
||
jmp .lp1
|
||
@@: cmp ah,0x50;x,0x50E0 ; down
|
||
jne @f
|
||
inc [vm_row]
|
||
mov al,[ln_cnt]
|
||
dec al
|
||
cmp [vm_row],al
|
||
jle .lp1
|
||
mov [vm_row],al
|
||
jmp .lp1
|
||
@@: cmp ah,0x4B;x,0x4BE0 ; left
|
||
jne @f
|
||
dec [vm_col]
|
||
jge .lp1
|
||
mov [vm_col],0
|
||
jmp .lp1
|
||
@@: cmp ah,0x4D;x,0x4DE0 ; right
|
||
jne @f
|
||
inc [vm_col]
|
||
cmp [vm_col],5
|
||
jle .lp1
|
||
mov [vm_col],5
|
||
jmp .lp1
|
||
@@: cmp al,0x0D;x,0x1C0D ; enter
|
||
jne .lp2
|
||
_setcursor 10,0
|
||
jmp .d
|
||
.change_b:
|
||
_setcursor 15,0
|
||
mov si, ask_dma-0x10000
|
||
call print
|
||
mov bx, '12'
|
||
call getkey
|
||
mov [preboot_dma_write-0x10000], al
|
||
_setcursor 11,0
|
||
jmp .d
|
||
.change_c:
|
||
_setcursor 15,0
|
||
mov si, vrrmprint-0x10000
|
||
call print
|
||
mov bx, '12'
|
||
call getkey
|
||
mov [preboot_vrrm-0x10000], al
|
||
_setcursor 12,0
|
||
jmp .d
|
||
.say_on_off:
|
||
pushf
|
||
call print
|
||
mov si, on_msg-0x10000
|
||
popf
|
||
jz @f
|
||
mov si, off_msg-0x10000
|
||
@@: call printplain
|
||
ret
|
||
; novesa and vervesa strings are not used at the moment of executing this code
|
||
virtual at novesa
|
||
.oldtimer dd ?
|
||
.starttime dd ?
|
||
.bSettingsChanged db ?
|
||
.timer dd ?
|
||
end virtual
|
||
org $+0x10000
|
||
.loader_block dd -1
|
||
org $-0x10000
|
||
.gettime:
|
||
mov ah, 0
|
||
int 1Ah
|
||
xchg ax, cx
|
||
shl eax, 10h
|
||
xchg ax, dx
|
||
ret
|
||
.newtimer:
|
||
push ds
|
||
push cs
|
||
pop ds
|
||
pushf
|
||
call [.oldtimer-0x10000]
|
||
pushad
|
||
call .gettime
|
||
sub eax, [.starttime-0x10000]
|
||
sub ax, 18*5
|
||
jae .timergo
|
||
neg ax
|
||
add ax, 18-1
|
||
mov bx, 18
|
||
xor dx, dx
|
||
div bx
|
||
if lang eq ru
|
||
; <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 5 ᥪ㭤, 4/3/2 ᥪ㭤<EFBFBD>, 1 ᥪ㭤<EFBFBD>
|
||
cmp al, 5
|
||
mov cl, ' '
|
||
jae @f
|
||
cmp al, 1
|
||
mov cl, '<27>'
|
||
jz @f
|
||
mov cl, '<27>'
|
||
@@: mov [time_str+9-0x10000], cl
|
||
else if lang eq et
|
||
cmp al, 1
|
||
ja @f
|
||
mov [time_str+9-0x10000], ' '
|
||
mov [time_str+10-0x10000],' '
|
||
@@:
|
||
else
|
||
; wait 5/4/3/2 seconds, 1 second
|
||
cmp al, 1
|
||
mov cl, 's'
|
||
ja @f
|
||
mov cl, ' '
|
||
@@: mov [time_str+9-0x10000], cl
|
||
end if
|
||
add al, '0'
|
||
mov [time_str+1-0x10000], al
|
||
mov si, time_msg-0x10000
|
||
_setcursor (d80x25_top_num+3),0
|
||
call print
|
||
_setcursor 25,0
|
||
popad
|
||
pop ds
|
||
iret
|
||
.timergo:
|
||
push 0
|
||
pop es
|
||
mov eax, [.oldtimer-0x10000]
|
||
mov [es:8*4], eax
|
||
mov sp, 0EC00h
|
||
.continue:
|
||
sti
|
||
_setcursor 6,0
|
||
mov si, space_msg-0x10000
|
||
call printplain
|
||
call printplain
|
||
_setcursor 6,0
|
||
mov si, loading_msg-0x10000
|
||
call print
|
||
_setcursor 15,0
|
||
cmp [.bSettingsChanged-0x10000], 0
|
||
jz .load
|
||
cmp [.loader_block-0x10000], -1
|
||
jz .load
|
||
les bx, [.loader_block-0x10000]
|
||
mov eax, [es:bx+3]
|
||
push ds
|
||
pop es
|
||
test eax, eax
|
||
jz .load
|
||
push eax
|
||
mov si, save_quest-0x10000
|
||
call print
|
||
.waityn:
|
||
mov ah, 0
|
||
int 16h
|
||
or al, 20h
|
||
cmp al, 'n'
|
||
jz .loadc
|
||
cmp al, 'y'
|
||
jnz .waityn
|
||
call putchar
|
||
mov byte [space_msg-0x10000+80], 186
|
||
pop eax
|
||
push cs
|
||
push .cont
|
||
push eax
|
||
retf
|
||
.loadc:
|
||
pop eax
|
||
.cont:
|
||
push cs
|
||
pop ds
|
||
mov si, space_msg-0x10000
|
||
mov byte [si+80], 0
|
||
_setcursor 15,0
|
||
call printplain
|
||
_setcursor 15,0
|
||
.load:
|
||
; \end{diamond}[02.12.2005]
|
||
|
||
; ASK GRAPHICS MODE
|
||
call set_vmode
|
||
|
||
|
||
|
||
; GRAPHICS ACCELERATION
|
||
|
||
mov al, [preboot_dma_write-0x10000]
|
||
mov [es:0x901F],al
|
||
|
||
; VRR_M USE
|
||
|
||
mov al,[preboot_vrrm-0x10000]
|
||
mov [es:0x9030],al
|
||
|
||
|
||
; MEMORY MODEL
|
||
|
||
; movzx eax,byte [es:preboot_memory-0x10000]
|
||
; cmp eax,0
|
||
; jne pre_mem
|
||
;;;;;;;;;;;;;;;;;;;;;;;;;
|
||
; mario79 - memory size ;
|
||
;;;;;;;;;;;;;;;;;;;;;;;;;
|
||
; mov ax,0E801h
|
||
;;; xor bx,bx ; thanks to Alexei for bugfix [18.07.2004]
|
||
; xor cx, cx
|
||
; xor dx, dx
|
||
; int 0x15
|
||
; movzx ebx, dx ;bx
|
||
; movzx eax, cx ;ax
|
||
; shl ebx,6 ; <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> (x64)
|
||
; add eax,ebx
|
||
; add eax, 1000h ;440h
|
||
; cmp eax,40000h ; 256?
|
||
; jge mem_256_z
|
||
; cmp eax,20000h ; 128?
|
||
; jge mem_128_z
|
||
; cmp eax,10000h ; 64?
|
||
; jge mem_64_z
|
||
; cmp eax,8000h ; 32?
|
||
; jge mem_32_z
|
||
; jmp mem_16_z
|
||
;
|
||
;mem_256_z: mov si,memokz256-0x10000
|
||
; call printplain
|
||
; mov eax,5
|
||
; jmp pre_mem
|
||
;mem_128_z: mov si,memokz128-0x10000
|
||
; call printplain
|
||
; mov eax,4
|
||
; jmp pre_mem
|
||
;mem_64_z: mov si,memokz64-0x10000
|
||
; call printplain
|
||
; mov eax,3
|
||
; jmp pre_mem
|
||
;mem_32_z: mov si,memokz32-0x10000
|
||
; call printplain
|
||
; mov eax,2
|
||
; jmp pre_mem
|
||
;mem_16_z: mov si,memokz16-0x10000
|
||
; call printplain
|
||
; mov eax,1
|
||
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
||
; pre_mem:
|
||
; push word 0x0000
|
||
; pop es
|
||
; mov [es:0x9030],al
|
||
; push word 0x1000
|
||
; pop es
|
||
; mov si,linef-0x10000
|
||
; call printplain
|
||
|
||
|
||
|
||
|
||
; DIRECT WRITE TO LFB, PAGING DISABLED
|
||
|
||
; movzx eax,byte [es:preboot_lfb-0x10000]
|
||
; mov eax,1 ; paging disabled
|
||
; cmp eax,0
|
||
; jne pre_lfb
|
||
; mov si,gr_direct-0x10000
|
||
; call printplain
|
||
; mov ebx,'12'
|
||
; call getkey
|
||
; pre_lfb:
|
||
; push word 0x0000
|
||
; pop es
|
||
; mov [es:0x901E],al
|
||
; mov ax,0x1000
|
||
; mov es,ax
|
||
; mov si,linef-0x10000
|
||
; call printplain
|
||
mov [es:0x901E],byte 1
|
||
|
||
|
||
|
||
; BOOT DEVICE
|
||
|
||
mov al, [preboot_device-0x10000]
|
||
dec al
|
||
mov [boot_dev-0x10000],al
|
||
|
||
; READ DISKETTE TO MEMORY
|
||
|
||
; cmp [boot_dev-0x10000],0
|
||
jne no_sys_on_floppy
|
||
mov si,diskload-0x10000
|
||
call print
|
||
xor ax, ax ; reset drive
|
||
xor dx, dx
|
||
int 0x13
|
||
; now load floppy image to memory
|
||
; at first load boot sector and first FAT table
|
||
mov cx, 0x0001 ; startcyl,startsector
|
||
xor dx, dx ; starthead,drive
|
||
mov al, 1+9 ; no of sectors to read
|
||
mov bx, 0xB000 ; es:bx -> data area
|
||
call boot_read_floppy
|
||
; and copy them to extended memory
|
||
mov si, movedesc-0x10000
|
||
mov [si+8*2+3], bh
|
||
push es
|
||
push ds
|
||
pop es
|
||
mov cx, 256*10
|
||
mov ah, 0x87
|
||
int 0x15
|
||
test ah, ah
|
||
jz @f
|
||
sayerr_floppy:
|
||
mov dx, 0x3f2
|
||
mov al, 0
|
||
out dx, al
|
||
mov si, memmovefailed-0x10000
|
||
jmp sayerr_plain
|
||
@@:
|
||
add dword [si+8*3+2], 512*10
|
||
; copy FAT to second copy
|
||
mov byte [si+8*2+3], 0xB2
|
||
mov cx, 256*9
|
||
mov ah, 0x87
|
||
int 0x15
|
||
pop es
|
||
test ah, ah
|
||
jnz sayerr_floppy
|
||
add dword [si+8*3+2], 512*9
|
||
; calculate total number of sectors to read
|
||
mov ax, 1+9+14 ; boot+FAT+root
|
||
mov di, 0xB203
|
||
.calc_loop:
|
||
test word [es:di], 0xFFF
|
||
jz @f
|
||
inc ax
|
||
@@:
|
||
test word [es:di+1], 0xFFF0
|
||
jz @f
|
||
inc ax
|
||
@@:
|
||
add di, 3
|
||
cmp di, 0xB200+1440*3
|
||
jb .calc_loop
|
||
push ax
|
||
mov bp, 1+9 ; already read sectors
|
||
; now read rest
|
||
mov byte [si+8*2+3], 0xA0
|
||
mov di, 2-14 ; absolute sector-31
|
||
mov cx, 0x0002 ; cylinder=0, sector=2
|
||
mov dx, 0x0100 ; head=1, disk=0
|
||
.read_loop:
|
||
; determine whether sector must be read
|
||
cmp di, 2
|
||
jl .read
|
||
mov bx, di
|
||
shr bx, 1
|
||
jnc .even
|
||
test word [es:bx+di+0xB200], 0xFFF0
|
||
jmp @f
|
||
.even:
|
||
test word [es:bx+di+0xB200], 0xFFF
|
||
@@:
|
||
jz .skip
|
||
.read:
|
||
mov bx, 0xA000
|
||
mov al, 1 ; 1 sector
|
||
call boot_read_floppy
|
||
inc bp
|
||
push es
|
||
push ds
|
||
pop es
|
||
pusha
|
||
mov cx, 256
|
||
mov ah, 0x87
|
||
int 0x15
|
||
test ah, ah
|
||
popa
|
||
pop es
|
||
jnz sayerr_floppy
|
||
.skip:
|
||
add dword [si+8*3+2], 512
|
||
inc cx
|
||
cmp cl, 19
|
||
jnz @f
|
||
mov cl, 1
|
||
inc dh
|
||
cmp dh, 2
|
||
jnz @f
|
||
mov dh, 0
|
||
inc ch
|
||
@@:
|
||
pop ax
|
||
push ax
|
||
pusha
|
||
; draw percentage
|
||
; total sectors: ax
|
||
; read sectors: bp
|
||
xchg ax, bp
|
||
mov cx, 100
|
||
mul cx
|
||
div bp
|
||
aam
|
||
xchg al, ah
|
||
add ax, '00'
|
||
mov si, pros-0x10000
|
||
cmp [si], ax
|
||
jz @f
|
||
mov [si], ax
|
||
call printplain
|
||
@@:
|
||
popa
|
||
inc di
|
||
cmp di, 2880-31
|
||
jnz .read_loop
|
||
|
||
; mov cx, 0x0001 ; startcyl,startsector
|
||
; xor dx, dx ; starthead,drive
|
||
; push word 80*2 ; read no of sect
|
||
; reads:
|
||
; pusha
|
||
; xor si,si
|
||
; newread:
|
||
; mov bx,0xa000 ; es:bx -> data area
|
||
; mov ax,0x0200+18 ; read, no of sectors to read
|
||
; int 0x13
|
||
; test ah, ah
|
||
; jz goodread
|
||
; inc si
|
||
; cmp si,10
|
||
; jnz newread
|
||
; mov si,badsect-0x10000
|
||
;sayerr_plain:
|
||
; call printplain
|
||
; jmp $
|
||
; goodread:
|
||
; ; move -> 1mb
|
||
; mov si,movedesc-0x10000
|
||
; push es
|
||
; push ds
|
||
; pop es
|
||
; mov cx,256*18
|
||
; mov ah,0x87
|
||
; int 0x15
|
||
; pop es
|
||
;
|
||
; test ah,ah ; was the move successfull ?
|
||
; je goodmove
|
||
; mov dx,0x3f2 ; floppy motor off
|
||
; mov al,0
|
||
; out dx,al
|
||
; mov si,memmovefailed-0x10000
|
||
; jmp sayerr_plain
|
||
; goodmove:
|
||
;
|
||
; add dword [movedesc-0x10000+0x18+2], 512*18
|
||
; popa
|
||
; inc dh
|
||
; cmp dh,2
|
||
; jnz bb2
|
||
; mov dh,0
|
||
; inc ch
|
||
; pusha ; print prosentage
|
||
; mov si,pros-0x10000
|
||
; shr ch, 2
|
||
; mov al, '5'
|
||
; test ch, 1
|
||
; jnz @f
|
||
; mov al, '0'
|
||
;@@:
|
||
; mov [si+1], al
|
||
; shr ch, 1
|
||
; add ch, '0'
|
||
; mov [si], ch
|
||
; call printplain
|
||
; popa
|
||
; bb2:
|
||
; pop ax
|
||
; dec ax
|
||
; push ax
|
||
; jnz reads
|
||
; readdone:
|
||
; pop ax
|
||
mov si,backspace2-0x10000
|
||
call printplain
|
||
mov si,okt-0x10000
|
||
call printplain
|
||
no_sys_on_floppy:
|
||
xor ax, ax ; reset drive
|
||
xor dx, dx
|
||
int 0x13
|
||
mov dx,0x3f2 ; floppy motor off
|
||
mov al,0
|
||
out dx,al
|
||
|
||
; push es
|
||
; PAGE TABLE
|
||
|
||
; push dword [es:0x9018]
|
||
;
|
||
; mmap_mem equ 64 ; amount of memory to map
|
||
;
|
||
push 0x6000
|
||
pop es ; es:di = 6000:0
|
||
; xor di,di
|
||
; mov cx,256*mmap_mem ; Map (mapmem) M
|
||
;; initialize as identity mapping
|
||
; xor eax, eax
|
||
; call pagetable_set
|
||
;
|
||
;
|
||
; 4 KB PAGE DIRECTORY
|
||
;
|
||
; push 0x7F00
|
||
; pop es ; es:di = 7F00:0
|
||
; xor di, di
|
||
; mov cx, 64 / 4
|
||
; mov eax, 0x60007 ; for 0 M
|
||
; call pagetable_set
|
||
; xor si,si
|
||
; mov di,second_base_address shr 20
|
||
; mov cx,64/2
|
||
; rep movs word [es:di], [es:si]
|
||
|
||
; mov eax, 0x7F000 +8+16 ; Page directory and enable caches
|
||
; mov cr3, eax
|
||
|
||
; SET GRAPHICS
|
||
|
||
; pop es
|
||
push 0
|
||
pop es
|
||
mov ax,[es:0x9008] ; vga & 320x200
|
||
mov bx, ax
|
||
cmp ax,0x13
|
||
je setgr
|
||
cmp ax,0x12
|
||
je setgr
|
||
mov ax,0x4f02 ; Vesa
|
||
setgr:
|
||
int 0x10
|
||
test ah,ah
|
||
mov si, fatalsel-0x10000
|
||
jnz sayerr
|
||
; set mode 0x12 graphics registers:
|
||
cmp bx,0x12
|
||
jne gmok2
|
||
|
||
mov al,0x05
|
||
mov dx,0x03ce
|
||
push dx
|
||
out dx,al ; select GDC mode register
|
||
mov al,0x02
|
||
inc dx
|
||
out dx,al ; set write mode 2
|
||
|
||
mov al,0x02
|
||
mov dx,0x03c4
|
||
out dx,al ; select VGA sequencer map mask register
|
||
mov al,0x0f
|
||
inc dx
|
||
out dx,al ; set mask for all planes 0-3
|
||
|
||
mov al,0x08
|
||
pop dx
|
||
out dx,al ; select GDC bit mask register
|
||
; for writes to 0x03cf
|
||
|
||
gmok2:
|
||
push ds
|
||
pop es
|