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Amiga Developer CD v1.2
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amidev_cd_12.iso
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inc&ad2.0
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includes
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exec
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io.h
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C/C++ Source or Header
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1992-09-01
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2KB
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64 lines
#ifndef EXEC_IO_H
#define EXEC_IO_H
/*
** $Filename: exec/io.h $
** $Release: 2.04 Includes, V37.4 $
** $Revision: 36.4 $
** $Date: 90/05/10 $
**
** Message structures used for device communication
**
** (C) Copyright 1985-1991 Commodore-Amiga, Inc.
** All Rights Reserved
*/
#ifndef EXEC_PORTS_H
#include "exec/ports.h"
#endif /* EXEC_PORTS_H */
struct IORequest {
struct Message io_Message;
struct Device *io_Device; /* device node pointer */
struct Unit *io_Unit; /* unit (driver private)*/
UWORD io_Command; /* device command */
UBYTE io_Flags;
BYTE io_Error; /* error or warning num */
};
struct IOStdReq {
struct Message io_Message;
struct Device *io_Device; /* device node pointer */
struct Unit *io_Unit; /* unit (driver private)*/
UWORD io_Command; /* device command */
UBYTE io_Flags;
BYTE io_Error; /* error or warning num */
ULONG io_Actual; /* actual number of bytes transferred */
ULONG io_Length; /* requested number bytes transferred*/
APTR io_Data; /* points to data area */
ULONG io_Offset; /* offset for block structured devices */
};
/* library vector offsets for device reserved vectors */
#define DEV_BEGINIO (-30)
#define DEV_ABORTIO (-36)
/* io_Flags defined bits */
#define IOB_QUICK 0
#define IOF_QUICK (1<<0)
#define CMD_INVALID 0
#define CMD_RESET 1
#define CMD_READ 2
#define CMD_WRITE 3
#define CMD_UPDATE 4
#define CMD_CLEAR 5
#define CMD_STOP 6
#define CMD_START 7
#define CMD_FLUSH 8
#define CMD_NONSTD 9
#endif /* EXEC_IO_H */