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instructions:spio [2009/05/09 04:22]
scott created
instructions:spio [2009/05/09 05:33] (current)
scott
Line 43: Line 43:
 The following checks are performed before initiating the I/O operation: The following checks are performed before initiating the I/O operation:
  
-  - The IOCB Memory Area base must be the same as that of the System IOCB or an //Invalid Instruction (**IEX = 07**)// fault is reported.  The System IOCB Memory Area b ase has been initialized by an [[instructions:whr|WHR]].  Not all systems perform this check. See [[compatibility_notes:a.60|Compatibility Notes A.60]].+  - The IOCB Memory Area base must be the same as that of the System IOCB or an //Invalid Instruction (**IEX = 07**)// fault is reported.  The System IOCB Memory Area base has been initialized by an [[instructions:whr|WHR]].  Not all systems perform this check. See [[compatibility_notes:a.60|Compatibility Notes A.60]].
   - The OP Value field in the DLP command (digit 62) must be valid or an //Invalid Instruction (**IEX = 07**)// fault is reported.   - The OP Value field in the DLP command (digit 62) must be valid or an //Invalid Instruction (**IEX = 07**)// fault is reported.
  
instructions/spio.txt ยท Last modified: 2009/05/09 05:33 by scott
 
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