Control Data Cyber 170 State Hardware Reference Manual page 173

Other IOU Instructions
Exchange Jump
2600 Exchange jump EXN
This instruction causes an unconditional exchange jump in the CP, leaving the
CP CYBER 170 monitor flag unaltered. The new CYBER
170
exchange package begins
at central memory location R plus A when the leftmost bit in A is set. When
this bit is clear, A specifies the address. The
PP
waits until the exchange is
completed before proceeding with the next instruction.
2610 Monitor exchange jump MXN
If the CP is in the CYBER 170 monitor mode, this instruction is a pass. If
the
CP is in the CYBER
170 job mode, it causes a CYBER 170 exchange jump in the CP,
switching the CP to the CYBER 170 monitor mode (MF equals 1 ) .
The new CYBER
170 exchange package begins at central memory location
R
plus A when the
leftmost bit in A is set. When this bit is clear, A specifies the address.
The PP waits until the exchange is completed before proceeding with the next
instruction.
2620
Monitor exchange jump to MA MAN
If the CP is in CYBER 170 monitor mode, this instruction is a pass. If the CP
is in CYBER 170 job mode, It causes
a
CYBER 170 exchange jump in the CP,
switching the CP to CYBER 170 monitor mode (MF equals 1 ) . The new CYBER 170
exchange package begins at the absolute address given in the MA field of the
outgoing CYBER 170 exchange package. The PP waits until the exchange is
completed before proceeding with the next instruction.