diff options
Diffstat (limited to 'rtl/src/control_unit.v')
| -rw-r--r-- | rtl/src/control_unit.v | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/rtl/src/control_unit.v b/rtl/src/control_unit.v index 6849214..608f6b1 100644 --- a/rtl/src/control_unit.v +++ b/rtl/src/control_unit.v @@ -14,6 +14,7 @@ module control_unit ( output reg mem_addr_src, output reg mem_we, + output reg [2:0] mem_size, output reg instr_we, @@ -132,6 +133,7 @@ always @ (*) begin instr_we = INSTR_WE_DISABLE; pc_update = PC_UPDATE_DISABLE; branch = BRANCH_DISABLE; + mem_size = FUNCT3_LS_W; case(state) STATE_FETCH: begin mem_addr_src = MEM_ADDR_SRC_PC; @@ -155,6 +157,7 @@ always @ (*) begin STATE_MEM_LOAD: begin mem_addr_src = MEM_ADDR_SRC_RESULT; result_src = RESULT_SRC_ALU_RESULT_BUF; + mem_size = funct3; end STATE_MEM_WB: begin result_src = RESULT_SRC_DATA_BUF; @@ -164,6 +167,7 @@ always @ (*) begin mem_addr_src = MEM_ADDR_SRC_RESULT; result_src = RESULT_SRC_ALU_RESULT_BUF; mem_we = MEM_WE_ENABLE; + mem_size = funct3; end STATE_EXECUTE_R: begin alu_a_src = ALU_A_SRC_RD1_BUF; |