Register file: implementing

Example: register file with 4 registers

Each parallel-load register

Input

32-bit data, x31-0

1 control bit, c

clock

Output

32-bit data, z31-0

When c = 1, the register parallel loads, i.e., z31-0 = x31-0.

When c = 0, it holds the value.

In order to organize the registers into a register file, we need the concept of a bus:

composed of multiple wires