diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/rtl/montprod.v | 36 |
1 files changed, 18 insertions, 18 deletions
diff --git a/src/rtl/montprod.v b/src/rtl/montprod.v index ffee748..c50751b 100644 --- a/src/rtl/montprod.v +++ b/src/rtl/montprod.v @@ -233,8 +233,8 @@ module montprod #(parameter OPW = 32, parameter ADW = 8) begin ready_reg <= 1'b1; loop_ctr_reg <= 13'h0; - word_index_reg <= 8'h0; - word_index_prev_reg <= 8'h0; + word_index_reg <= {ADW{1'b0}}; + word_index_prev_reg <= {ADW{1'b0}}; add_carry_in_sa_reg <= 1'b0; add_carry_in_sm_reg <= 1'b0; shr_carry_in_reg <= 1'b0; @@ -242,8 +242,8 @@ module montprod #(parameter OPW = 32, parameter ADW = 8) q_reg <= 1'b0; s_mux_reg <= SMUX_0; s_mem_we_reg <= 1'b0; - s_mem_wr_addr_reg <= 8'h0; - b_bit_index_reg <= 5'h0; + s_mem_wr_addr_reg <= {ADW{1'b0}}; + b_bit_index_reg <= {(13 - ADW){1'b0}}; first_iteration_reg <= 1'b0; montprod_ctrl_reg <= CTRL_IDLE; end @@ -312,11 +312,11 @@ module montprod #(parameter OPW = 32, parameter ADW = 8) tmp_result_we = 1'b1; - if (reset_word_index_lsw == 1'b1) + if (reset_word_index_lsw) word_index_new = length_m1; - else if (reset_word_index_msw == 1'b1) - word_index_new = 8'h0; + else if (reset_word_index_msw) + word_index_new = {ADW{1'b0}}; else if (montprod_ctrl_reg == CTRL_CALC_SDIV2) word_index_new = word_index_reg + 1'b1; @@ -332,11 +332,11 @@ module montprod #(parameter OPW = 32, parameter ADW = 8) always @* begin : s_logic shr_carry_in_new = 1'b0; - muxed_s_mem_read_data = 32'h0; - sa_adder_data_in = 32'h0; + muxed_s_mem_read_data = {OPW{1'b0}}; + sa_adder_data_in = {OPW{1'b0}}; add_carry_in_sa_new = 1'b0; add_carry_in_sm_new = 1'b0; - s_mem_new = 32'h0; + s_mem_new = {OPW{1'b0}}; s_mem_we_new = 1'b0; @@ -368,7 +368,7 @@ module montprod #(parameter OPW = 32, parameter ADW = 8) SMUX_ADD: begin if (first_iteration_reg) - muxed_s_mem_read_data = 32'h0; + muxed_s_mem_read_data = {OPW{1'b0}}; else muxed_s_mem_read_data = s_mem_read_data; @@ -383,7 +383,7 @@ module montprod #(parameter OPW = 32, parameter ADW = 8) else if (q_reg) s_mem_new = add_result_sm; else if (first_iteration_reg) - s_mem_new = 32'h0; + s_mem_new = {OPW{1'b0}}; else s_mem_new = s_mem_read_data; @@ -430,12 +430,12 @@ module montprod #(parameter OPW = 32, parameter ADW = 8) loop_ctr_we = 1'b0; length_m1 = length - 1'b1; - b_bit_index_new = 5'h1f - loop_ctr_reg[4:0]; - b_word_index = loop_ctr_reg[12:5]; + b_bit_index_new = (2**(13 - ADW) - 1) - loop_ctr_reg[(13 - ADW - 1) : 0]; + b_word_index = loop_ctr_reg[12 : (13 - ADW)]; if (loop_ctr_set) begin - loop_ctr_new = {length, 5'b00000} - 1'b1; + loop_ctr_new = {length, {(13 - ADW){1'b0}}} - 1'b1; loop_ctr_we = 1'b1; end @@ -485,7 +485,7 @@ module montprod #(parameter OPW = 32, parameter ADW = 8) CTRL_INIT_S: begin - if (word_index_reg == 8'h0) + if (word_index_reg == 0) begin loop_ctr_set = 1'b1; montprod_ctrl_new = CTRL_WAIT; @@ -521,7 +521,7 @@ module montprod #(parameter OPW = 32, parameter ADW = 8) begin s_mux_new = SMUX_ADD; - if (word_index_reg == 8'h0) + if (word_index_reg == 0) begin reset_word_index_lsw = 1'b1; montprod_ctrl_new = CTRL_STALLPIPE_ADD; @@ -571,7 +571,7 @@ module montprod #(parameter OPW = 32, parameter ADW = 8) CTRL_EMIT_S: begin - if (word_index_prev_reg == 8'h0) + if (word_index_prev_reg == 0) begin ready_new = 1'b1; ready_we = 1'b1; |