122 lines
2.7 KiB
OpenEdge ABL
122 lines
2.7 KiB
OpenEdge ABL
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IFND EXEC_IO_I
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EXEC_IO_I SET 1
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**
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** $Filename: exec/io.i $
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** $Release: 1.3 $
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**
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**
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**
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** (C) Copyright 1985,1986,1987,1988 Commodore-Amiga, Inc.
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** All Rights Reserved
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**
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IFND EXEC_PORTS_I
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INCLUDE "exec/ports.i"
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ENDC ; EXEC_PORTS_I
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IFND EXEC_LIBRARIES_I
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INCLUDE "exec/libraries.i"
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ENDC ; EXEC_LIBRARIES_I
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*----------------------------------------------------------------
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*
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* IO Request Structures
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*
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*----------------------------------------------------------------
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*------ Required portion of IO request:
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STRUCTURE IO,MN_SIZE
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APTR IO_DEVICE * device node pointer
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APTR IO_UNIT * unit (driver private)
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UWORD IO_COMMAND * device command
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UBYTE IO_FLAGS * special flags
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BYTE IO_ERROR * error or warning code
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LABEL IO_SIZE
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*------ Standard IO request extension:
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ULONG IO_ACTUAL * actual # of bytes transfered
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ULONG IO_LENGTH * requested # of bytes transfered
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APTR IO_DATA * pointer to data area
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ULONG IO_OFFSET * offset for seeking devices
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LABEL IOSTD_SIZE
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*------ IO_FLAGS bit definitions:
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BITDEF IO,QUICK,0 * complete IO quickly
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*----------------------------------------------------------------
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*
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* Standard Device Library Functions
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*
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*----------------------------------------------------------------
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LIBINIT
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LIBDEF DEV_BEGINIO * process IO request
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LIBDEF DEV_ABORTIO * abort IO request
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*----------------------------------------------------------------
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*
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* IO Function Macros
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*
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*----------------------------------------------------------------
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BEGINIO MACRO
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LINKLIB DEV_BEGINIO,IO_DEVICE(A1)
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ENDM
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ABORTIO MACRO
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LINKLIB DEV_ABORTIO,IO_DEVICE(A1)
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ENDM
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*----------------------------------------------------------------
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*
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* Standard Device Command Definitions
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*
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*----------------------------------------------------------------
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*------ Command definition macro:
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DEVINIT MACRO * [baseOffset]
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IFC '\1',''
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CMD_COUNT SET CMD_NONSTD
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ENDC
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IFNC '\1',''
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CMD_COUNT SET \1
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ENDC
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ENDM
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DEVCMD MACRO * cmdname
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\1 EQU CMD_COUNT
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CMD_COUNT SET CMD_COUNT+1
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ENDM
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*------ Standard device commands:
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DEVINIT 0
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DEVCMD CMD_INVALID * invalid command
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DEVCMD CMD_RESET * reset as if just inited
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DEVCMD CMD_READ * standard read
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DEVCMD CMD_WRITE * standard write
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DEVCMD CMD_UPDATE * write out all buffers
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DEVCMD CMD_CLEAR * clear all buffers
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DEVCMD CMD_STOP * hold current and queued
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DEVCMD CMD_START * restart after stop
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DEVCMD CMD_FLUSH * abort entire queue
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*------ First non-standard device command value:
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DEVCMD CMD_NONSTD
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ENDC ; EXEC_IO_I
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