Critical Elements of the IBM System 360. Jeff Schreibman CS585: Computer Architecture Summer 2002. Introduction. IBM in the early 1960’s IBM’s vision for the System 360 Success of the 360. Critical Elements. Forward and Backward Compatibility
CS585: Computer Architecture
Register 0 is special when used in addressing mode (NOTE: zero is always substituted)
These are covered more extensively in the next 3 slides, but here is their general format.