diff options
Diffstat (limited to 'rtl/modexpng_io_manager.v')
-rw-r--r-- | rtl/modexpng_io_manager.v | 21 |
1 files changed, 19 insertions, 2 deletions
diff --git a/rtl/modexpng_io_manager.v b/rtl/modexpng_io_manager.v index fdbc4af..2b71779 100644 --- a/rtl/modexpng_io_manager.v +++ b/rtl/modexpng_io_manager.v @@ -345,6 +345,14 @@ module modexpng_io_manager // // Ladder Init/Step Logic // + +`ifdef MODEXPNG_ENABLE_DEBUG +//`define DEFINE_MODEXPNG_TRUNCATE_LADDER XXX /*specify step index to abort ladder*/ +`ifdef DEFINE_MODEXPNG_TRUNCATE_LADDER +localparam [BIT_INDEX_W-1:0] MODEXPNG_TRUNCATE_LADDER = `DEFINE_MODEXPNG_TRUNCATE_LADDER; +`endif +`endif + reg ladder_d_r; reg ladder_p_r; reg ladder_q_r; @@ -360,8 +368,8 @@ module modexpng_io_manager wire [ OP_ADDR_W -1:0] ladder_index_msb = ladder_index[BIT_INDEX_W-1-: OP_ADDR_W]; wire [ WORD_MUX_W -1:0] ladder_index_lsb = ladder_index[ WORD_MUX_W-1-:WORD_MUX_W]; wire ladder_index_is_zero = ladder_index == BIT_INDEX_ZERO; - - always @(posedge clk) + + always @(posedge clk) begin // if (io_fsm_state_next == IO_FSM_STATE_LATENCY_PRE1) begin // @@ -378,6 +386,15 @@ module modexpng_io_manager end // end + // +`ifdef MODEXPNG_ENABLE_DEBUG +`ifdef DEFINE_MODEXPNG_TRUNCATE_LADDER + if ((io_fsm_state_next == IO_FSM_STATE_STOP) && opcode_is_ladder_step && (ladder_index == MODEXPNG_TRUNCATE_LADDER)) + ladder_done_r <= 1'b1; +`endif +`endif + // + end // |