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Autodocs
 Devices:
 trackdisk.device
  CMD_CLEAR
  CMD_READ
  CMD_UPDATE
  CMD_WRITE
  TD_ADDCHANGEINT
  TD_CHANGENUM
  TD_CHANGESTATE
  TD_EJECT
  TD_FORMAT
  TD_GETDRIVETYPE
  TD_GETGEOMETRY
  TD_GETNUMTRACKS
  TD_MOTOR
  TD_PROTSTATUS
  TD_RAWREAD
  TD_RAWWRITE
  TD_REMCHANGEINT
  TD_SEEK
Include
GuruMeditation
Docs » Autodocs » trackdisk.device » TD_ADDCHANGEINT

NAME

	TD_ADDCHANGEINT -- add a disk change software interrupt handler.

FUNCTION

	This command lets you add a software interrupt handler to the
disk device that gets invoked whenever a disk insertion or removal
occurs.
You must pass in a properly initialized Exec Interrupt structure
and be prepared to deal with disk insertions/removals
immediately. From within the interrupt handler, you may only call the
status commands that can use IOF_QUICK.
To set up the handler, an Interrupt structure must be initialized.
This structure is supplied as the io_Data to the TD_ADDCHANGEINT
command. The handler then gets linked into the handler chain and
gets invoked whenever a disk change happens. You must eventually
remove the handler before you exit.
This command only returns when the handler is removed. That is,
the device holds onto the IO request until the TD_REMCHANGEINT command
is executed with that same IO request. Hence, you must use SendIO()
with this command.
IO REQUEST INPUT
io_Device preset by the call to OpenDevice()
io_Unit preset by the call to OpenDevice()
io_Command TD_ADDCHANGEINT
io_Flags 0
io_Length sizeof(struct Interrupt)
io_Data pointer to Interrupt structure
IO REQUEST RESULT
io_Error - 0 for success, or an error code as defined in
<devices/trackdisk.h>

SEE ALSO

TD_REMCHANGEINT(), <devices/trackdisk.h>, <exec/interrupts.h>, exec.library/Cause()

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