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Annotation of gcl520h/_irq286.h, revision 1.1

1.1     ! root        1: #ifndef _IRQ16_DOT_H
        !             2: #define _IRQ16_DOT_H
        !             3: 
        !             4: /*
        !             5:  * _IRQ286.H          5.20A  June 8, 1995
        !             6:  *
        !             7:  * The Greenleaf Comm Library
        !             8:  *
        !             9:  * Copyright (C) 1984-1995 Greenleaf Software Inc.  All Rights Reserved.
        !            10:  *
        !            11:  * NOTES
        !            12:  *
        !            13:  *  This file contains all the structures and constants used by
        !            14:  *  the 16 bit IRQ Manager internal functions.  End users should never
        !            15:  *  have to include this file in any of their source modules.
        !            16:  *
        !            17:  * MODIFICATIONS
        !            18:  *
        !            19:  * December 1, 1994   5.10A :  Initial release.
        !            20:  *
        !            21:  */
        !            22: 
        !            23: #define MAXIMUM_HANDLERS 10
        !            24: 
        !            25: #pragma pack( 1 )
        !            26: 
        !            27: typedef struct _tag_irqdata {
        !            28:     void far * old_prot_handler;
        !            29:     GF_REALPTR16 old_real_handler;
        !            30:     void far *prot_handler;
        !            31:     GF_REALPTR16 real_handler;
        !            32:     void far *prot_handler_data;
        !            33:     GF_REALPTR16 real_handler_data;
        !            34:     void ( GF_CONV *tear_down_function )( void far *data );
        !            35: #ifndef _LCODE
        !            36:     int dummy_place_holder; /* I keep this struc constant size for ISR ease */
        !            37: #endif
        !            38:     int interrupt_number;
        !            39:     int saved_8259_bit;
        !            40:     int primary_8259;
        !            41:     int secondary_8259;
        !            42:     int mask_8259;
        !            43:     int prot_int_count;
        !            44:     int real_int_count;
        !            45: } IRQDATA;
        !            46: 
        !            47: #pragma pack()
        !            48: 
        !            49: #ifdef __cplusplus
        !            50: extern "C" {
        !            51: #endif
        !            52: 
        !            53: int GF_CONV HookInterrupt( int interrupt_number,
        !            54:                            void ( GF_CDECL *prot_handler )( void far *data ),
        !            55:                            GF_REALPTR16 real_handler,
        !            56:                            void far *handler_data,
        !            57:                            void ( GF_CONV *tear_down_function ) ( void far *data ),
        !            58:                            int primary_8259,
        !            59:                            int secondary_8259,
        !            60:                            int mask_8259 );
        !            61: int GF_CONV UnHookInterrupt( int interrupt_number );
        !            62: void far * GF_CONV _GetInterruptData( int interrupt_number );
        !            63: int GF_CONV RelocateIsrData( void );
        !            64: void far * GF_CONV CalcRR16Address( void far *p );
        !            65: 
        !            66: #ifdef __cplusplus
        !            67: }
        !            68: #endif
        !            69: 
        !            70: /*
        !            71:  * These first two extern declarations are used to find the start and end
        !            72:  * of the real isr data area.  We need this when it is time to perform
        !            73:  * the relocation.
        !            74:  */
        !            75: 
        !            76: extern char far _SegmentStartRR;
        !            77: extern char far _SegmentEndRR;
        !            78: 
        !            79: /*
        !            80:  * These two extern definitions are really important.  When
        !            81:  * the 16 bit IRQ manager is initialized, it relocates the real portion
        !            82:  * of the IRQ manager, plus the table of IRQDATA blocks down to
        !            83:  * a block of real memory.  Thse two pointers let everyone else
        !            84:  * know where that memory block is.
        !            85:  */
        !            86: 
        !            87: extern GF_REALPTR16 RealBlockPtrReal;
        !            88: extern void far *RealBlockPtrProt;
        !            89: 
        !            90: void GF_CDECL far _RealIret( GF_REALPTR16 int_flag );
        !            91: 
        !            92: #endif /* #ifndef _IRQ16_DOT_H */
        !            93: 

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