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Autodocs
 Devices:
 cd.device
  CD_ADDCHANGEINT
  CD_ADDFRAMEINT
  CD_ATTENUATE
  CD_CHANGENUM
  CD_CHANGESTATE
  CD_CONFIG
  CD_EJECT
  CD_GETGEOMETRY
  CD_INFO
  CD_MOTOR
  CD_PAUSE
  CD_PLAYLSN
  CD_PLAYMSF
  CD_PLAYTRACK
  CD_PROTSTATUS
  CD_QCODELSN
  CD_QCODEMSF
  CD_READ
  CD_READXL
  CD_REMCHANGEINT
  CD_REMFRAMEINT
  CD_SEARCH
  CD_SEEK
  CD_TOCLSN
  CD_TOCMSF
  CloseDevice
  OpenDevice
Include
GuruMeditation
Docs » Autodocs » cd.device » CD_ADDCHANGEINT

NAME

       CD_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.
The interrupt is generated by the exec Cause function, so you must
preserve A6.
To set up the handler, an Interrupt structure must be initialized.
This structure is supplied as the io_Data to the CD_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 CD_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 CD_ADDCHANGEINT
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/cd.h>

SEE ALSO

CD_REMCHANGEINT(), <devices/cd.h>, <exec/interrupts.h>, exec.library/Cause()

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