DTL_RMW

The DTL_RMW functions allow the client application to read, modify, and write a word or longword in a processor's data table in one uninterruptable operation. This function has three forms: DTL_RMW is the asynchronous version; DTL_RMW_W is the synchronous version; and DTL_RMW_CB is the callback version.

DTL_RETVAL DTL_RMW(name_id, variable, and_mask, or_mask, io_stat, wait_id, timeout
)

UNSIGNED LONG name_id ;	/* data item handle
UNSIGNED CHAR *variable ;	/* pointer to data buffer
UNSIGNED LONG and_mask ;	/* AND mask value
UNSIGNED LONG or_mask ;	/* OR mask value
UNSIGNED LONG *io_stat ;	/* pointer to I/O status buffer
UNSIGNED LONG wait_id ;	/* wait identifier
UNSIGNED LONG timeout ;	/* I/O timeout value

DTL_RETVAL DTL_RMW_W(name_id, variable, and_mask, or_mask, io_stat, timeout
)

UNSIGNED LONG name_id ;	/* data item handle
UNSIGNED CHAR *variable ;	/* pointer to data buffer
UNSIGNED LONG and_mask ;	/* AND mask value
UNSIGNED LONG or_mask ;	/* OR mask value
UNSIGNED LONG *io_stat ;	/* pointer to I/O status buffer
UNSIGNED LONG timeout ;	/* I/O timeout value

DTL_RETVAL DTL_RMW_CB(name_id, variable, and_mask, or_mask, timeout, callback_proc, callback_param
)

UNSIGNED LONG name_id ;	/* data item handle
UNSIGNED CHAR *variable ;	/* pointer to data buffer
UNSIGNED LONG and_mask ;	/* AND mask value
UNSIGNED LONG or_mask ;	/* OR mask value
UNSIGNED LONG timeout ;	/* I/O timeout value
DTL_IO_CALLBACK_PROC callback_proc ;	/* callback procedure number
UNSIGNED LONG callback_param ;	/* callback parameter value

I/O function calls

DTL_RMW return values

DTL_RMW parameters

DTL_RMW comments

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