Subject
system 360 > upward and downward capability for the instruction sets
Quote from Video
one all programs had to be functionally compatible so that we could have upward and downward capability for the instruction sets of system 360 and we could take a program for the model 40 and run it equally well on the 30 or equally well on the 50 getting the same valid results.

“one all programs had to be functionally compatible so that we could have upward and downward capability for the instruction sets of system 360 and we could take a program for the model 40 and run it equally well on the 30 or equally well on the 50 getting the same valid results.”
