Control Data Cyber 170 State Hardware Reference Manual page 132

CP Pass Instructions
CP Pass lnstructions
The pass instructions (table 4-13) perform no operation and are used for
filling words to get the next instruction properly positioned.
Table 4-13. CP Pass InatructLons
Opcode Format Instruction Mnemonic
460
xx
Pass
461 xx Pass
462 xx Pass
463 xx Pass
Pass
46Oxx Pass
rhru 463xx
These lnstructions fill program instruction words where necessary
to
match
jump
destinations with word boundaries. The
j
and k designators are Ignored, and a
nonzero value has no effect in this instruction.