Processor Enable Toggles

MEMORY AREA REPORT ENABLE

The memory error report enable allows a memory error report to be written into memory and affects the contents of the main memory specified by the value of the memory error report address.

The memory error report enable and address are set by the Write Hardware Register instruction and is turned off automatically after the report is written into memory.

PROCESSOR SNAP ENABLE

The SNAP picture enable allows one SNAP picture per processor to be stored in memory and affects the contents of main memory specified by the value of the SNAP picture address that was set by the Write Hardware Register instruction.

If the error was an invalid instruction fault, address error fault, or an instruction timeout fault, then the task SNAP enable for the task must also be set for a SNAP picture to be stored into main memory.

If the error was a hardware failure, then only the processor SNAP enable must be set for the SNAP picture to be stored into main memory. (Some single processor systems unconditionally store a SNAP picture into main memory on a fatal hardware failure.)

The SNAP picture enable is set by the write hardware register instruction and is reset by another variant of the same instruction. The enable is turned off automatically after the picture is written into memory.

Some processors write certain SNAP pictures into SNAP files on the maintenance subsystem disk.

processor_state/processor_enable_toggles.txt · Last modified: 2013/01/26 15:56 by scott
 
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