diff options
Diffstat (limited to 'rtl/modexpng_mmm_dual.v')
| -rw-r--r-- | rtl/modexpng_mmm_dual.v | 28 |
1 files changed, 24 insertions, 4 deletions
diff --git a/rtl/modexpng_mmm_dual.v b/rtl/modexpng_mmm_dual.v index df0f823..babd565 100644 --- a/rtl/modexpng_mmm_dual.v +++ b/rtl/modexpng_mmm_dual.v @@ -45,7 +45,7 @@ module modexpng_mmm_dual rcmb_y_dout, rcmb_xy_valid, - rdct_ena + rdct_ena, rdct_rdy ); @@ -110,6 +110,7 @@ module modexpng_mmm_dual output rcmb_xy_valid; output rdct_ena; + input rdct_rdy; // @@ -928,7 +929,11 @@ module modexpng_mmm_dual FSM_STATE_MULT_RECTANGLE_COL_N_TRIG: fsm_state_next = FSM_STATE_MULT_RECTANGLE_COL_N_BUSY ; FSM_STATE_MULT_RECTANGLE_COL_N_BUSY: fsm_state_next = rectangle_done ? fsm_state_after_mult_rectangle : FSM_STATE_MULT_RECTANGLE_COL_N_BUSY; - FSM_STATE_MULT_RECTANGLE_HOLDOFF: fsm_state_next = rcmb_rdy ? FSM_STATE_STOP : FSM_STATE_MULT_RECTANGLE_HOLDOFF; + FSM_STATE_MULT_RECTANGLE_HOLDOFF: fsm_state_next = rcmb_rdy ? FSM_STATE_WAIT_REDUCTOR : FSM_STATE_MULT_RECTANGLE_HOLDOFF; + + FSM_STATE_WAIT_REDUCTOR: fsm_state_next = rdct_rdy ? FSM_STATE_STOP : FSM_STATE_WAIT_REDUCTOR; + + FSM_STATE_STOP: fsm_state_next = FSM_STATE_IDLE ; default: fsm_state_next = FSM_STATE_IDLE ; @@ -944,13 +949,28 @@ module modexpng_mmm_dual assign rdct_ena = rdct_ena_reg; - always @(posedge clk) // add reset!!! + always @(posedge clk) // - case (fsm_state) + if (rst) rdct_ena_reg <= 1'b0; + else case (fsm_state) FSM_STATE_MULT_RECTANGLE_COL_0_INIT: rdct_ena_reg <= 1'b1; default: rdct_ena_reg <= 1'b0; endcase + // + // Ready Logic + // + reg rdy_reg = 1'b1; + + assign rdy = rdy_reg; + + always @(posedge clk) + // + if (rst) rdy_reg <= 1'b1; + else begin + if (rdy && ena) rdy_reg <= 1'b0; + if (!rdy && (fsm_state == FSM_STATE_STOP)) rdy_reg <= 1'b1; + end endmodule |