Specifications

Operating System Routines
IOC$CRAM_IO
• If the operation does not complete within the timeout interval (found at
location CRAM$Q_WAIT_TIME), the routine returns a status of SS$_
TIMEOUT. Bit CRAM$V_CRAM_IN_USE is left set.
If IOC$CRAM_IO returns a status of SS$_NORMAL for a read operation,
the requested data is stored in HW_CRAM$Q_RDATA of the hardware I/O
mailbox. Note, however, that a normal return for a write operation does not
necessarily guarantee that the write data stored in HW_CRAM$Q_WDATA has
been successfully written to the device register.
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