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8255ppi.h
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C/C++ Source or Header
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2000-04-04
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815b
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34 lines
#ifndef _8255PPI_H_
#define _8255PPI_H_
#define MAX_8255 4
typedef struct
{
int num; /* number of PPIs to emulate */
int (*portA_r)( int chip );
int (*portB_r)( int chip );
int (*portC_r)( int chip );
void (*portA_w)( int chip, int data );
void (*portB_w)( int chip, int data );
void (*portC_w)( int chip, int data );
} ppi8255_interface;
/* Init */
void ppi8255_init( ppi8255_interface *intfce);
/* Read/Write */
int ppi8255_r ( int which, int offset );
void ppi8255_w( int which, int offset, int data );
/* Helpers */
READ_HANDLER( ppi8255_0_r );
READ_HANDLER( ppi8255_1_r );
READ_HANDLER( ppi8255_2_r );
READ_HANDLER( ppi8255_3_r );
WRITE_HANDLER( ppi8255_0_w );
WRITE_HANDLER( ppi8255_1_w );
WRITE_HANDLER( ppi8255_2_w );
WRITE_HANDLER( ppi8255_3_w );
#endif