Cray CRAY-1 - 004 Xxx Normal Exit

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: 004xxx Normal exit :
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This instruction causes an exchange sequence. The contents of the
instruction buffers are voided by the exchange sequence. If monitor
mode is not in effect, the normal exit flag in the F register is set.
All instructions issued prior to this instruction are run to completion.
t·lhen all results have arrived at the operatinq registers as a result
of previously issued instructions, an exchange sequence occurs to the
exchange package designated
by the contents of the XA reqister. The
program address stored in the exchange package is advanced one count
from the address of the normal exit instruction. This instruction is
used to issue a monitor request from a user program.
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).
Special cases
2240004
Block instruction issue
Begin exchange sequence
4-15
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