The MIPS Register File

• Well, sort of.
  • I will use 8 bit data, not 32 or 64, but this will scale easily
  • I will use 4 registers, not 32, but this will scale.
  • I will only have one read value, not two....
• Foundation grab four registers.
• Output
  • We need a MUX to select between the four registers.
  • We will control this with a DIP switch, but it could be the value coming out of the IR.
  • Wire this up.
• Input is more of a problem.
  • But not much more.
  • A common input data line.
  • A decoder to select the register
  • A "clock" or "Save" line to raise when we are ready to save data in a register.
  • And the clock with the output of the decoder.
• Additionally a Clear switch.
• 
• And the source code