Register access: R-type

Components

Register file: 32 registers

Fig. 5.6

Inputs

2 read register numbers (5 bits each)

1 write register number (5 bits)

write data (32 bits)

Outputs: 2 read data values (32 bits each)

Control: RegWrite determines whether to write data to target register (1 bit)

ALU: performs arithmetic/logical operations

Inputs: 2 data values (32 bits each)

Outputs

Result of operation (32 bits)

Zero: result is equal to 0 (1 bit)

Control: ALU control selects operation (3 bits)