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authorJoachim StroĢˆmbergson <joachim@secworks.se>2015-06-15 17:45:17 +0200
committerJoachim StroĢˆmbergson <joachim@secworks.se>2015-06-15 17:45:17 +0200
commitf4fc1641d63a24f1e78b48361e951bc4e1e2b154 (patch)
treef55b4484ed40a9eaea3a9ef4bb70f607addf8c8f /src/rtl
parent1ba71b2fbee8e60b6fb788c95687b1921add774b (diff)
Fixed prev reg:
Diffstat (limited to 'src/rtl')
-rw-r--r--src/rtl/montprod.v60
1 files changed, 30 insertions, 30 deletions
diff --git a/src/rtl/montprod.v b/src/rtl/montprod.v
index 2c27941..de5e4c0 100644
--- a/src/rtl/montprod.v
+++ b/src/rtl/montprod.v
@@ -127,9 +127,9 @@ module montprod(
reg [04 : 0] B_bit_index; //loop counter as a bit index
reg [04 : 0] B_bit_index_reg; //loop counter as a bit index
- reg [07 : 0] word_index; //register of what word is being read
+ reg [07 : 0] word_index_reg; //register of what word is being read
reg [07 : 0] word_index_new; //calculation of what word to be read
- reg [07 : 0] word_index_prev; //register of what word was read previously (result address to emit)
+ reg [07 : 0] word_index_prev_reg; //register of what word was read previously (result address to emit)
reg [07 : 0] length_m1;
reg add_carry_in_sa;
@@ -219,28 +219,28 @@ module montprod(
begin : reg_update
if (!reset_n)
begin
- ready_reg <= 1'b0;
- loop_counter_reg <= 13'h0;
- word_index <= 8'h0;
- word_index_prev <= 8'h0;
- add_carry_in_sa <= 1'b0;
- add_carry_in_sm <= 1'b0;
- shr_carry_in <= 1'b0;
- montprod_ctrl_reg <= CTRL_IDLE;
- b_reg <= 1'b0;
- 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;
+ ready_reg <= 1'b0;
+ loop_counter_reg <= 13'h0;
+ word_index_reg <= 8'h0;
+ word_index_prev_reg <= 8'h0;
+ add_carry_in_sa <= 1'b0;
+ add_carry_in_sm <= 1'b0;
+ shr_carry_in <= 1'b0;
+ b_reg <= 1'b0;
+ 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;
+ montprod_ctrl_reg <= CTRL_IDLE;
end
else
begin
s_mem_wr_addr_reg <= s_mem_addr;
s_mem_we_reg <= s_mem_we_new;
- word_index <= word_index_new;
- word_index_prev <= word_index;
+ word_index_reg <= word_index_new;
+ word_index_prev_reg <= word_index_reg;
shr_carry_in <= shr_carry_new;
add_carry_in_sa <= add_carry_new_sa;
@@ -361,21 +361,21 @@ module montprod(
opa_addr_reg = length_m1;
default:
- opa_addr_reg = word_index;
+ opa_addr_reg = word_index_reg;
endcase
opb_addr_reg = B_word_index;
- opm_addr_reg = word_index;
+ opm_addr_reg = word_index_reg;
case (montprod_ctrl_reg)
CTRL_LOOP_ITER:
s_mem_addr = length_m1;
default:
- s_mem_addr = word_index;
+ s_mem_addr = word_index_reg;
endcase
- result_addr_reg = word_index_prev;
+ result_addr_reg = word_index_prev_reg;
result_data_reg = s_mem_read_data;
@@ -392,9 +392,9 @@ module montprod(
else if (reset_word_index_MSW == 1'b1)
word_index_new = 8'h0;
else if (montprod_ctrl_reg == CTRL_L_CALC_SDIV2)
- word_index_new = word_index + 1'b1;
+ word_index_new = word_index_reg + 1'b1;
else
- word_index_new = word_index - 1'b1;
+ word_index_new = word_index_reg - 1'b1;
end // prodcalc
@@ -495,7 +495,7 @@ module montprod(
CTRL_INIT_S:
begin
- if (word_index == 8'h0)
+ if (word_index_reg == 8'h0)
begin
montprod_ctrl_new = CTRL_LOOP_INIT;
montprod_ctrl_we = 1'b1;
@@ -527,7 +527,7 @@ module montprod(
CTRL_L_CALC_SM:
begin
- if (word_index == 8'h0)
+ if (word_index_reg == 8'h0)
begin
reset_word_index_LSW = 1'b1;
montprod_ctrl_we = 1'b1;
@@ -544,7 +544,7 @@ module montprod(
CTRL_L_CALC_SA:
begin
- if (word_index == 8'h0)
+ if (word_index_reg == 8'h0)
begin
reset_word_index_LSW = 1'b1;
montprod_ctrl_new = CTRL_L_STALLPIPE_SA;
@@ -561,7 +561,7 @@ module montprod(
CTRL_L_CALC_SDIV2:
begin
- if (word_index == length_m1)
+ if (word_index_reg == length_m1)
begin
montprod_ctrl_new = CTRL_L_STALLPIPE_D2;
montprod_ctrl_we = 1'b1;
@@ -590,8 +590,8 @@ module montprod(
CTRL_EMIT_S:
begin
if (DEBUG)
- $display("EMIT_S word_index: %d", word_index);
- if (word_index_prev == 8'h0)
+ $display("EMIT_S word_index_reg: %d", word_index_reg);
+ if (word_index_prev_reg == 8'h0)
begin
montprod_ctrl_new = CTRL_DONE;
montprod_ctrl_we = 1'b1;