Control Data Cyber 170 State Hardware Reference Manual page 174

Instruction Execution Timing
Instruction Execution Timing
Table 4-24 lists approximate execution times for the
PP
instructions. These
times are listed with the assumption that no conflicts occur.
The numbers in
the timing notes column refer to the notes at the end of the table. Execution
times are given in 250-11s major cycles.
NOTE
These execution times are approximations only
and are subject to change without notice.
Accurate timlngs can come only from benchmark
tests.
Control Data Corporation is not
responsible for assumptions made based on the
times listed here.