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Rev 748 Rev 1942
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;;  See file COPYING for details.                               ;;
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;;  See file COPYING for details.                               ;;
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;;  Copyright 2003 Ville Turjanmaa                              ;;
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;;  Copyright 2003 Ville Turjanmaa                              ;;
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;;                                                              ;;
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;;                                                              ;;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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$Revision: 748 $
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$Revision: 1942 $
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        jnz  no_apm_off
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        jnz  no_apm_off
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        call APM_PowerOff
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        call APM_PowerOff
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        jmp  $
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        jmp  $
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no_apm_off:
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no_apm_off:
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        dec  ax    ; 3 = reboot
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        jnz  restart_kernel        ; 4 = restart kernel
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        ; 3 = reboot, 4 = obsolete restart kernel
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        push 0x40
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        push 0x40
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        pop  ds
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        pop  ds
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        mov  word[0x0072],0x1234
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        mov  word[0x0072],0x1234
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        mov bx,1
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        mov bx,1
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        mov cx,3
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        mov cx,3
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        int 0x15
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        int 0x15
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;!!!!!!!!!!!!!!!!!!!!!!!!
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;!!!!!!!!!!!!!!!!!!!!!!!!
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        ret
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        ret
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restart_kernel:
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        mov     ax,0x0003      ; set text mode for screen
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        int     0x10
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        jmp     0x4000:0000
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restart_kernel_4000:
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        cli
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        push    ds
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        pop     es
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        mov     cx, 0x8000
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        push    cx
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        push    0x7000
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        pop     ds
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        xor     si, si
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        xor     di, di
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        rep     movsw
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        pop     cx
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        mov     ds, cx
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        push    0x2000
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        pop     es
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        rep     movsw
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        push    0x9000
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        pop     ds
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        push    0x3000
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        pop     es
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        mov     cx, 0xE000/2
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        rep     movsw
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        wbinvd  ; write and invalidate cache
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        mov    al, 00110100b
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        out    43h, al
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        jcxz    $+2
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        mov    al, 0xFF
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        out    40h, al
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        jcxz    $+2
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        out    40h, al
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        jcxz    $+2
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        sti
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; (hint by Black_mirror)
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; We must read data from keyboard port,
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; because there may be situation when previous keyboard interrupt is lost
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; (due to return to real mode and IRQ reprogramming)
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; and next interrupt will not be generated (as keyboard waits for handling)
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        in      al, 0x60
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; bootloader interface
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        push    0x1000
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        pop    ds
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        mov    si, kernel_restart_bootblock
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        mov    ax, 'KL'
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        jmp     0x1000:0000
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