Detailed view for this entity.
“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.”
“readon storage allows a full instruction set for the models 30 to 62 so that you can have true upward and downward program compatibility of your programs”