The use of multiple register windows with overlap causes a reduction in the number of memory accesses for
$$1.\,\,\,\,$$ Function locals and parameters
$$2.\,\,\,\,$$ Register saves and restores
$$3.\,\,\,\,$$ Instruction fetches

For all delayed conditional branch instructions, irrespective of whether the condition evaluate true or false,

Which of the following is/are true of the auto increment addressing mode?
$$1.$$ It is useful in creating self relocating code
$$2.$$ If it is included in an Instruction Set Architecture, then an additional $$ALU$$ is required for effective address calculation
$$3.$$ The amount of increment depends on the size of the data item accessed.

Which of the following must be true for the $$RFE$$ (Return From Exception) instruction on a general purpose processor?
$$1.$$ It must be a trap instruction
$$2.$$ It must be a privileged instruction
$$3.$$ An exception cannot be allowed to occur during execution of an $$RFE$$ instruction.