Cray CRAY-1 - CRAY-1 Error Exit Instruction (000 xxx)

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OOOxxx
Error exit
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This instruction is treated as an error condition and an exchange
sequence occurs. The content of the instruction buffers is voided
by the exchange sequence. If monitor mode is not in effect, the
error exit flag in the F register is set. All instructions issued
prior to this instruction are run to completion. When the results
of previously issued instructions have arrived at the operating
registers, an exchange occurs to the exchange package designated by
the contents of the XA register. The program address stored in the
exchange package on the terminating exchange sequence is advanced by
one count from the address of the error exit instruction. The error
exit instruction is not generally used in program code. Its purpose
is to halt execution of an incorrectly coded program that branches
into
an unused area of memory or into a data area.
Hold issue conditions
034 - 037 in process
Exchange in process
Execution time
Instruction issue
50 CPs; this time includes an exchange sequence
(36 CPs) and a fetch operation (14 CPs).
SpeciaJ cases
None
2240004 4-7
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