diff options
Diffstat (limited to 'core/rtl/decode.sv')
| -rw-r--r-- | core/rtl/decode.sv | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/core/rtl/decode.sv b/core/rtl/decode.sv new file mode 100644 index 0000000..e337e11 --- /dev/null +++ b/core/rtl/decode.sv @@ -0,0 +1,34 @@ +module decode +import riscv_types::*; +#( + ) + ( + input logic clk, + input logic rst_l, + + // I-MEM Interface + input logic [31:0] imem_id_instr_ID + ); + +opcode_t instrOpCode_ID; + +assign instrOpCode_ID = opcode_t'(imem_id_instr_ID[6:0]); + +always_ff @(posedge clk) begin + $display("Instruction: %x", imem_id_instr_ID); + case (instrOpCode_ID) + INSTR_TYPE_LUI: begin $display("Instr type: LUI"); end + INSTR_TYPE_AUIPC: begin $display("Instr type: AUIPC"); end + INSTR_TYPE_JAL: begin $display("Instr type: JAL"); end + INSTR_TYPE_JALR: begin $display("Instr type: JALR"); end + INSTR_TYPE_BR: begin $display("Instr type: BR"); end + INSTR_TYPE_LD: begin $display("Instr type: LD"); end + INSTR_TYPE_ST: begin $display("Instr type: ST"); end + INSTR_TYPE_IMM: begin $display("Instr type: IMM"); end + INSTR_TYPE_REG: begin $display("Instr type: REG"); end + INSTR_TYPE_CSR: begin $display("Instr type: CSR"); end + default: begin $display("Instr type: Unknown"); end + endcase +end + +endmodule |