SCSIRBlind
SCSIRBlind Transfer data without polling and waiting for /REQ line Ptr tibPtr; pointer to a transfer instruction block SCSIRBlind transfers data from the target to the initiator, as specified by the transfer instructions block pointed to by tibPtr. It is functionally
equivalent to SCSIRead, but it does not poll and wait for the /REQ line on each data byte. Rather the /REQ line is polled only for the first byte transferred by
each scInc, scNoInc or scComp instruction.
Given the following instruction block:
scOpcode scParam1 scParam2
scInc 0x67B50 512
scLoop -10 6
SCSIRBlind polls and wait only for the first byte of each 512-byte block transferred.
Returns: an error code indicating success or failure of the function. It will be one of:
noErr (0) No error
scBadParmsErr (4) Unrecognized instruction in transfer instruction block
scCommErr (2) Breakdown in SCSI protocols
scCompareErr (6) Data comparison error
scPhaseErr (5) Phase error
Notes: The error codes returned by SCSI Manager routines typically indicate only that a given operation has failed. To determine the actual cause of the
failure, another SCSI command needs to be sent asking the device what went
wrong.
with the data bytes transferred during the data phase. A transfer instruction
block contains a pseudo-program consisting of a variable number of
instructions; it's similar to a subroutine except that the instructions are
provided and interpreted by the SCSI Manager itself. The instructions are information on the the instructions that are available.