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
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Docs » Autodocs » cd.device » CD_ADDCHANGEINT
CD_ADDCHANGEINT -- add a disk change software interrupt handler.
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>
CD_REMCHANGEINT(), <devices/cd.h>, <exec/interrupts.h>, exec.library/Cause()
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