OSDev

      mov rax, [IOAPICAddr]
      mov [rax+IOAPIC_IOREGSEL_REG], dword IOAPIC_IOAPICID
      mov [rax+IOAPIC_IOWIN_REG], dword 04000000h

      mov [rax+IOAPIC_IOREGSEL_REG], dword IOAPIC_IOREDTBL0_hi
      mov [rax+IOAPIC_IOWIN_REG], dword (02h shl 24)     ; Send to 2nd core
      mov [rax+IOAPIC_IOREGSEL_REG], dword IOAPIC_IOREDTBL0_low
      mov [rax+IOAPIC_IOWIN_REG], dword 20h

        mov al, 00010001b               ; begin PIC 1 initialization
        out 0x20, al
        mov al, 00010001b               ; begin PIC 2 initialization
        out 0xA0, al
        mov al, 0x20                    ; IRQ 0-7: interrupts 20h-27h
        out 0x21, al
        mov al, 0x28                    ; IRQ 8-15: interrupts 28h-2Fh
        out 0xA1, al
        mov al, 4
        out 0x21, al
        mov al, 2
        out 0xA1, al
        mov al, 1
        out 0x21, al
        out 0xA1, al

        in al, 0x21
        mov al, 11111111b               ; Disable all IRQs
        out 0x21, al
        in al, 0xA1
        mov al, 11111111b
        out 0xA1, al

        in al, 0x21
        mov al, 11111111b               ; Disable all IRQs
        out 0x21, al
        in al, 0xA1
        mov al, 11111111b
        out 0xA1, al
 
     ......   

      mov rsi, [LAPICAddr]
      mov eax, [rsi+APIC_SPUR_REG]  ; Setup Spurious interrupt vector
      and eax, (not 01FFh)
      or  eax, (0100h or 030h)
      mov [rsi+APIC_SPUR_REG], eax

      mov eax, [rsi+APIC_LVT_LINT0_REG]  ; Setup LINT0
      and eax, 0FFFE58FFh
      mov [rsi+APIC_LVT_LINT0_REG], eax

      mov eax, [rsi+APIC_LVT_LINT1_REG]  ; Setup LINT1
      and eax, 0FFFE58FFh
      or  eax, 0400h
      mov [rsi+APIC_LVT_LINT1_REG], eax

      mov [rsi+APIC_TPR], dword 20h  ; TaskPriority, ставил разные
      mov [rsi+APIC_LVT_Timer_REG], dword 10000h  ; Shut down timer
      mov [rsi+APIC_PMC_REG], dword 10000h ; Shut down performance monitor
      mov [rsi+APIC_ERROR_REG], dword 10000h ; Shut down error interrupt
      mov eax, [rsi+20h]
      mov [rsi+APIC_LDR_REG], dword eax ; Setup logical ID
      mov [rsi+APIC_DFR_REG], dword (0Fh shl 28) ; Setup DFR mask

      mov    al, 70h
      out    22h, al
      mov    al, 01h
      out    23h, al

      mov rsi, [IOAPICAddr]
      ;mov [rsi+IOAPIC_IOREGSEL_REG], dword IOAPIC_IOAPICID ; Эти две строки и раскомментировал, и снова убирал.
      ;mov [rsi+IOAPIC_IOWIN_REG], dword 04000000h

      mov [rsi+IOAPIC_IOREGSEL_REG], dword IOAPIC_IOREDTBL0_low
      mov [rsi+IOAPIC_IOWIN_REG], dword (1 shl 16)
      mov [rsi+IOAPIC_IOREGSEL_REG], dword IOAPIC_IOREDTBL0_hi
      mov [rsi+IOAPIC_IOWIN_REG], dword (00h shl 24)
sti

mov rbx, IOAPIC_IOREDTBL0_low
      mov rcx, 24
      @@:
        mov [rsi+IOAPIC_IOREGSEL_REG], dword ebx
        mov [rsi+IOAPIC_IOWIN_REG], dword (1 shl 16)    ; low
        inc rbx
        mov [rsi+IOAPIC_IOREGSEL_REG], dword ebx
        mov [rsi+IOAPIC_IOWIN_REG], dword (00h shl 24)  ; high
        inc rbx
      loop @b

      mov rsi, [IOAPICAddr]   ; Here we have current IOAPIC address
      mov [rsi+IOAPIC_IOREGSEL_REG], dword IOAPIC_IOREDTBL2_low  ; SysTimer
      mov [rsi+IOAPIC_IOWIN_REG], dword 20h+(0b shl 11)+(0 shl 16)  ; Redirect to 20h 
      mov [rsi+IOAPIC_IOREGSEL_REG], dword IOAPIC_IOREDTBL2_hi
      mov [rsi+IOAPIC_IOWIN_REG], dword (01h shl 24)  ; on LAPICID=1

      call InitLapic           

      .....
; This function will be called on each CPU:
InitLapic:
     ; LAPIC must be turned on in MSR register 1Bh, bit 11 (set to 1).
      push rax rsi
      mov rsi, [LAPICAddr]    ; Here we have current LAPIC address
      mov eax, [rsi+APIC_SPUR_REG]  ; Setup Spurious interrupt vector
      and eax, (not 01FFh)
      or  eax, (0100h or 03Fh)
      mov [rsi+APIC_SPUR_REG], eax

      mov eax, [rsi+APIC_LVT_LINT0_REG]  ; Setup LINT0
      and eax, 0FFFE58FFh
      mov [rsi+APIC_LVT_LINT0_REG], eax

      mov eax, [rsi+APIC_LVT_LINT1_REG]  ; Setup LINT1
      and eax, 0FFFE58FFh
      or  eax, 0400h
      mov [rsi+APIC_LVT_LINT1_REG], eax

      mov [rsi+APIC_TPR], dword 0h  ; TaskPriority
      mov [rsi+APIC_LVT_Timer_REG], dword 10000h  ; Shut down timer
      mov [rsi+APIC_PMC_REG], dword 10000h ; Shut down performance monitor
      mov [rsi+APIC_ERROR_REG], dword 10000h ; Shut down error interrupt
      mov eax, [rsi+20h] ; Get LAPICID
      mov [rsi+APIC_LDR_REG], dword eax ; Setup logical ID
      mov [rsi+APIC_DFR_REG], dword (0Fh shl 28) ; Setup DFR mask

      mov    al, 70h
      out    22h, al
      mov    al, 01h
      out    23h, al
      pop  rsi rax
      ret

IA32_APIC_BASE equ 1Bh

LOCAL_APIC_ID_REG     = 20h

APIC_TPR              = 80h
APIC_LDR_REG          = 0D0h
APIC_DFR_REG          = 0E0h
APIC_SPUR_REG         = 0F0h
APIC_ICR_low          = 300h
APIC_ICR_hi           = 310h

APIC_LVT_Timer_REG    = 320h
APIC_PMC_REG          = 340h
APIC_LVT_LINT0_REG    = 350h
APIC_LVT_LINT1_REG    = 360h
APIC_ERROR_REG        = 370h

Initial_Count_REG     = 380h
Current_Count_REG     = 390h
Divide_Configuration_REG = 3E0h

APIC_EOI_REG          = 0B0h

;----------------------------------------------------------------

IOAPIC_IOREGSEL_REG  = 0h
IOAPIC_IOWIN_REG     = 10h

IOAPIC_EOI_REG       = 040h

IOAPIC_IOAPICID      = 0
IOAPIC_IOAPICVER     = 1h

IOAPIC_IOREDTBL0_low = 10h
IOAPIC_IOREDTBL0_hi  = 11h
IOAPIC_IOREDTBL1_low = 12h
IOAPIC_IOREDTBL1_hi  = 13h
IOAPIC_IOREDTBL2_low = 14h
IOAPIC_IOREDTBL2_hi  = 15h