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/* 
=============================================================================== 
| Copyright (C) 2004 RuanHaiShen, All rights reserved. 
| SUMMARY:  
|   Interrupt and clock support. 
| 
| DESCRIPTION: 
|   See http://www.01s.org for documentation, latest information, license  
|   and contact details. 
|   email:ruanhaishen@01s.org 
=============================================================================*/ 
#ifndef __arch_intr_h__ 
#define __arch_intr_h__ 
/*===========================================================================*/ 
 
#define disable_irq()           asm     { cli }  
#define CRITICAL_ENTER          asm     { pushf; cli }  
#define CRITICAL_EXIT           asm     { popf } 
 
#define TICKS_PER_SEC           200 
 
#define __dos_tick()            asm  int   0x81 
 
#define __eoi_to_8259a() \ 
do { \ 
    asm { \ 
        mov     al, 0x20; \ 
        mov     dx, 0x20; \ 
        out     dx, al; \ 
    } \ 
} while (0) 
 
/*contex.asm-------------------------------------------------------*/ 
void __timer_intr_s(void); 
 
 
/*===========================================================================*/ 
#endif