Instruction Decoder

[foez-ahmed]

The IOs of the instruction decoder should be something like this:

module instruction_decoder (
  input  logic [15:0] code_i,
  output func_t       func_o,
  output logic         we_o,
  output logic [2:0]  rd_addr_o,
  output logic [2:0]  rs1_addr_o,
  output logic [2:0]  rs2_addr_o,
  output logic [31:0] imm_o
);

[anindyakchoudhury]

Is immediate a 32-bit value coming out of ID? or is it a 6-bit value? Because IMEM stores 16 bit of instructions_width. IMM is not stored in any kind of memory either and comes from the user input.

[foez-ahmed]

Yes, please convert it to a 32bit signed number before sending it to muxing with rs2

[anindyakchoudhury]

Bhaiya, when instr_t is used? @foez-ahmed

[foez-ahmed]

instr_t is now func_t