subsystems/mvdm/ntvdm/hardware/pic.h

   1 /*
   2  * COPYRIGHT:       GPL - See COPYING in the top level directory
   3  * PROJECT:         ReactOS Virtual DOS Machine
   4  * FILE:            subsystems/mvdm/ntvdm/hardware/pic.h
   5  * PURPOSE:         Programmable Interrupt Controller emulation
   6  *                  (Interrupt Controller Adapter (ICA) in Windows terminology)
   7  * PROGRAMMERS:     Aleksandar Andrejevic <theflash AT sdf DOT lonestar DOT org>
   8  */
   9
  10 #ifndef _PIC_H_
  11 #define _PIC_H_
  12
  13 /* DEFINES ********************************************************************/
  14
  15 #define PIC_MASTER_CMD  0x20
  16 #define PIC_MASTER_DATA 0x21
  17 #define PIC_SLAVE_CMD   0xA0
  18 #define PIC_SLAVE_DATA  0xA1
  19
  20 #define PIC_ICW1        0x10
  21 #define PIC_ICW1_ICW4   (1 << 0)
  22 #define PIC_ICW1_SINGLE (1 << 1)
  23 #define PIC_ICW4_8086   (1 << 0)
  24 #define PIC_ICW4_AEOI   (1 << 1)
  25
  26 #define PIC_OCW2_NUM_MASK   0x07
  27 #define PIC_OCW2_EOI        (1 << 5)
  28 #define PIC_OCW2_SL         (1 << 6)
  29
  30 #define PIC_OCW3            (1 << 3)
  31 #define PIC_OCW3_READ_ISR   0x0B
  32
  33 /* FUNCTIONS ******************************************************************/
  34
  35 VOID PicInterruptRequest(BYTE Number);
  36 BYTE PicGetInterrupt(VOID);
  37
  38 VOID PicInitialize(VOID);
  39
  40 #endif /* _PIC_H_ */