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2118 serge 1 
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;;                                                              ;;
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;; Copyright (C) KolibriOS team 2004-2011. All rights reserved. ;;
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;; Distributed under terms of the GNU General Public License    ;;
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;;                                                              ;;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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align 4
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rerouteirqs:
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        cli
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        mov     al,0x11         ;  icw4, edge triggered
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        out     0x20,al
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        out     0xA0,al
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        mov     al,0x20         ;  generate 0x20 +
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        out     0x21,al
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        mov     al,0x28         ;  generate 0x28 +
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        out     0xA1,al
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        mov     al,0x04         ;  slave at irq2
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        out     0x21,al
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        mov     al,0x02         ;  at irq9
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        out     0xA1,al
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        mov     al,0x01         ;  8086 mode
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        out     0x21,al
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        out     0xA1,al
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        mov     al,255          ; mask all irq's
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        out     0xA1,al
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        out     0x21,al
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        mov     al,255          ; mask all irq's
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        out     0xA1,al
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        out     0x21,al
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        ret
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align 4
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;proc enable_irq stdcall, irq_line:dword
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enable_irq:                                ; FIXME make fastcall
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       mov ebx, [esp+4]  ;irq_line
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       mov edx, 0x21
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       cmp ebx, 8
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       jb @F
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       mov edx, 0xA1
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       sub ebx,8
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@@:
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       in al,dx
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       btr eax, ebx
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       out dx, al
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       ret 4
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align 4
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;proc irq_eoi fastcall, irq_line:dword
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irq_eoi:
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       cmp cl, 8
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       mov al, 0x20
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       jb @f
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       out 0xa0, al
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@@:
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       out 0x20, al
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       ret