MIPS Read and Write in Register file

RegFile은 Register 32개로 이루어진 파일이다. 각 Register는 32 bit을 가진다. 

 

 

 

32개의 Register로 이루어진 RegFile

 

input

 

ReadReg1, ReadReg2, WriteReg는 5 bit, WriteData는 32 bit, RegWrite과 Clock 은 1 bit

RegWrite (rwrite)는 write 할 때는 1이고, 그렇지 않으면 0이다.

WriteReg는 write 할 Register이다. 32개의 Register를 나타내야하므로 5 bit이다. 

 

Reading from the Register File

For example, if you want to read the value stored inside $10, you can sest Read Register 1 to 10. The value $10 will appear on the Read Data 1 output.

 

 

Writing to the Register File

To write to a register inside of the register file, set the following signals

• Write register: the number of the register you're writing to
• Write data: The data you want to store inside the register
• RegWrite: This is a control signal whose value needs to be 1 to write to a register
  • When we're not writing to a register, this value should be 0

 

decoder

 

wreg에 해당되는 register가 enabled 되어야 한다.

 

mux

mux