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41 lines
1.1 KiB
C
41 lines
1.1 KiB
C
/*
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* COPYRIGHT: GPL - See COPYING in the top level directory
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* PROJECT: ReactOS Virtual DOS Machine
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* FILE: subsystems/mvdm/ntvdm/hardware/pic.h
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* PURPOSE: Programmable Interrupt Controller emulation
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* (Interrupt Controller Adapter (ICA) in Windows terminology)
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* PROGRAMMERS: Aleksandar Andrejevic <theflash AT sdf DOT lonestar DOT org>
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*/
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#ifndef _PIC_H_
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#define _PIC_H_
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/* DEFINES ********************************************************************/
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#define PIC_MASTER_CMD 0x20
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#define PIC_MASTER_DATA 0x21
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#define PIC_SLAVE_CMD 0xA0
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#define PIC_SLAVE_DATA 0xA1
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#define PIC_ICW1 0x10
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#define PIC_ICW1_ICW4 (1 << 0)
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#define PIC_ICW1_SINGLE (1 << 1)
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#define PIC_ICW4_8086 (1 << 0)
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#define PIC_ICW4_AEOI (1 << 1)
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#define PIC_OCW2_NUM_MASK 0x07
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#define PIC_OCW2_EOI (1 << 5)
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#define PIC_OCW2_SL (1 << 6)
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#define PIC_OCW3 (1 << 3)
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#define PIC_OCW3_READ_ISR 0x0B
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/* FUNCTIONS ******************************************************************/
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VOID PicInterruptRequest(BYTE Number);
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BYTE PicGetInterrupt(VOID);
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VOID PicInitialize(VOID);
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#endif /* _PIC_H_ */
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