Added support for non-CRT mode. Further refactoring.

5 files changed, 54 insertions, 12 deletions

diff --git a/rtl/modexpng_core_top.v b/rtl/modexpng_core_top.v
index 0c72478..a991c61 100644
--- a/rtl/modexpng_core_top.v
+++ b/rtl/modexpng_core_top.v
@@ -323,7 +323,9 @@ module modexpng_core_top
     wire [                 WORD_EXT_W  -1:0] io_narrow_y_data_y;      //
 
     wire [                 WORD_W      -1:0] wrk_rd_narrow_x_data_x_lsb = wrk_rd_narrow_x_data_x[WORD_W-1:0];
+    wire [                 WORD_W      -1:0] wrk_rd_narrow_y_data_x_lsb = wrk_rd_narrow_y_data_x[WORD_W-1:0];
     wire [                 WORD_W      -1:0] wrk_rd_narrow_x_data_y_lsb = wrk_rd_narrow_x_data_y[WORD_W-1:0];
+    wire [                 WORD_W      -1:0] wrk_rd_narrow_y_data_y_lsb = wrk_rd_narrow_y_data_y[WORD_W-1:0];
 
 
     //
@@ -735,7 +737,9 @@ module modexpng_core_top
         .io_out_dout                (io_out_data),
         
         .wrk_narrow_x_din_x_lsb     (wrk_rd_narrow_x_data_x_lsb),
+        .wrk_narrow_y_din_x_lsb     (wrk_rd_narrow_y_data_x_lsb),
         .wrk_narrow_x_din_y_lsb     (wrk_rd_narrow_x_data_y_lsb),
+        .wrk_narrow_y_din_y_lsb     (wrk_rd_narrow_y_data_y_lsb),
         
         .ladder_steps               (io_mgr_ladder_steps),
         .ladder_d                   (io_mgr_ladder_d),
diff --git a/rtl/modexpng_general_worker.v b/rtl/modexpng_general_worker.v
index cedbee9..4202066 100644
--- a/rtl/modexpng_general_worker.v
+++ b/rtl/modexpng_general_worker.v
@@ -37,7 +37,7 @@ module modexpng_general_worker
     input  [              BANK_ADDR_W  -1:0] sel_narrow_out; 
     input  [              BANK_ADDR_W  -1:0] sel_wide_in; 
     input  [              BANK_ADDR_W  -1:0] sel_wide_out; 
-    
+        
     input  [              UOP_OPCODE_W -1:0] opcode;
     
     input  [              OP_ADDR_W    -1:0] word_index_last;
diff --git a/rtl/modexpng_io_manager.v b/rtl/modexpng_io_manager.v
index da2bdac..5bce191 100644
--- a/rtl/modexpng_io_manager.v
+++ b/rtl/modexpng_io_manager.v
@@ -53,7 +53,9 @@ module modexpng_io_manager
     io_out_dout,
     
     wrk_narrow_x_din_x_lsb,
+    wrk_narrow_y_din_x_lsb,
     wrk_narrow_x_din_y_lsb,
+    wrk_narrow_y_din_y_lsb,
     
     ladder_steps,
     ladder_d,
@@ -125,7 +127,9 @@ module modexpng_io_manager
     output [              WORD_W       -1:0] io_out_dout;
     
     input  [              WORD_W       -1:0] wrk_narrow_x_din_x_lsb;
+    input  [              WORD_W       -1:0] wrk_narrow_y_din_x_lsb;
     input  [              WORD_W       -1:0] wrk_narrow_x_din_y_lsb;
+    input  [              WORD_W       -1:0] wrk_narrow_y_din_y_lsb;
     
     input  [              BIT_INDEX_W  -1:0] ladder_steps;
     output                                   ladder_d;
@@ -457,6 +461,9 @@ module modexpng_io_manager
     //
     wire [WORD_EXT_W -1:0] io_in_dout_mux = {{(WORD_EXT_W-WORD_W){1'b0}}, sel_aux_is_1 ? io_in_1_din : io_in_2_din};
 
+    wire [WORD_W -1:0] wrk_narrow_xy_din_x_mux_lsb = sel_aux == UOP_AUX_1 ? wrk_narrow_x_din_x_lsb : wrk_narrow_y_din_x_lsb; 
+    wire [WORD_W -1:0] wrk_narrow_xy_din_y_mux_lsb = sel_aux == UOP_AUX_1 ? wrk_narrow_x_din_y_lsb : wrk_narrow_y_din_y_lsb;
+
     always @(posedge clk) begin
         //
         wide_x_din_x   <= WORD_EXT_DNC;
@@ -476,12 +483,12 @@ module modexpng_io_manager
             IO_FSM_STATE_EXTRA,
             IO_FSM_STATE_LATENCY_POST1: begin
                 //
-                if (opcode_is_input_wide   && sel_crt_is_x) {wide_x_din_x,   wide_y_din_x}   <= {2{io_in_dout_mux}};    // TODO: Make external ports smaller (WORD_W, not WORD_EXT_W)??
+                if (opcode_is_input_wide   && sel_crt_is_x) {wide_x_din_x,   wide_y_din_x}   <= {2{io_in_dout_mux}};
                 if (opcode_is_input_wide   && sel_crt_is_y) {wide_x_din_y,   wide_y_din_y}   <= {2{io_in_dout_mux}};
                 if (opcode_is_input_narrow && sel_crt_is_x) {narrow_x_din_x, narrow_y_din_x} <= {2{io_in_dout_mux}};
                 if (opcode_is_input_narrow && sel_crt_is_y) {narrow_x_din_y, narrow_y_din_y} <= {2{io_in_dout_mux}};
                 //
-                if (opcode_is_output) out_dout <= sel_crt_is_x ? wrk_narrow_x_din_x_lsb: wrk_narrow_x_din_y_lsb;
+                if (opcode_is_output) out_dout <= sel_crt_is_x ? wrk_narrow_xy_din_x_mux_lsb : wrk_narrow_xy_din_y_mux_lsb;
                 //
             end
             //
@@ -490,7 +497,7 @@ module modexpng_io_manager
                 if (opcode_is_input_narrow && sel_crt_is_x && sel_in_needs_extra) {narrow_x_din_x, narrow_y_din_x} <= {2{io_in_dout_mux}};
                 if (opcode_is_input_narrow && sel_crt_is_y && sel_in_needs_extra) {narrow_x_din_y, narrow_y_din_y} <= {2{io_in_dout_mux}};
                 //
-                if (opcode_is_output) out_dout <= sel_crt_is_x ? wrk_narrow_x_din_x_lsb : wrk_narrow_x_din_y_lsb;
+                if (opcode_is_output) out_dout <= sel_crt_is_x ? wrk_narrow_xy_din_x_mux_lsb : wrk_narrow_xy_din_y_mux_lsb;
                 //
             end            
             //
diff --git a/rtl/modexpng_uop_engine.v b/rtl/modexpng_uop_engine.v
index a87d924..8ad2122 100644
--- a/rtl/modexpng_uop_engine.v
+++ b/rtl/modexpng_uop_engine.v
@@ -346,10 +346,10 @@ module modexpng_uop_engine
     always @(uop_data_ladder, io_mgr_ladder_p, io_mgr_ladder_q, io_mgr_ladder_d)
         //
         case (uop_data_ladder)
-            UOP_LADDER_00: uop_data_ladder_mux = 2'b00; 
+            UOP_LADDER_00: uop_data_ladder_mux = 2'b00;
             UOP_LADDER_11: uop_data_ladder_mux = 2'b11;
-            UOP_LADDER_D:  uop_data_ladder_mux = {io_mgr_ladder_d, ~io_mgr_ladder_d};
-            UOP_LADDER_PQ: uop_data_ladder_mux = {io_mgr_ladder_p,  io_mgr_ladder_q};
+            UOP_LADDER_D:  uop_data_ladder_mux = {~io_mgr_ladder_d, io_mgr_ladder_d};
+            UOP_LADDER_PQ: uop_data_ladder_mux = { io_mgr_ladder_p, io_mgr_ladder_q};
         endcase
 
     reg [OP_ADDR_W-1:0] word_index_last_mux;
@@ -478,7 +478,7 @@ module modexpng_uop_engine
                     update_io_mgr_params(uop_data_crt, uop_data_aux, uop_data_sel_narrow_in, uop_data_sel_narrow_out, uop_data_opcode);
                 //
                 UOP_OPCODE_OUTPUT_FROM_NARROW: begin
-                    update_io_mgr_params(uop_data_crt, UOP_AUX_DNC, BANK_DNC, uop_data_sel_narrow_out, uop_data_opcode);
+                    update_io_mgr_params(uop_data_crt, uop_data_aux, BANK_DNC, uop_data_sel_narrow_out, uop_data_opcode);
                     update_wrk_params(BANK_DNC, uop_data_sel_narrow_in, BANK_DNC, BANK_DNC, uop_data_opcode);                
                 end
                 //
@@ -615,7 +615,6 @@ module modexpng_uop_engine
                 //
             endcase
             
-
     //
     // UOP FSM Process
     //
diff --git a/rtl/modexpng_uop_rom.v b/rtl/modexpng_uop_rom.v
index 5d6308c..c15f608 100644
--- a/rtl/modexpng_uop_rom.v
+++ b/rtl/modexpng_uop_rom.v
@@ -38,8 +38,8 @@ module modexpng_uop_rom
                                                                                                                                                                                          //
             7'd015:  data <= {UOP_OPCODE_PROPAGATE_CARRIES,   UOP_CRT_DNC, UOP_NPQ_N,   UOP_AUX_DNC, UOP_LADDER_DNC, BANK_DNC,      BANK_NARROW_D,      BANK_DNC,    BANK_NARROW_D    }; //
                                                                                                                                                                                          //
-            7'd016:  data <= {UOP_OPCODE_OUTPUT_FROM_NARROW,  UOP_CRT_X,   UOP_NPQ_N,   UOP_AUX_DNC, UOP_LADDER_DNC, BANK_DNC,      BANK_NARROW_D,      BANK_DNC,    BANK_OUT_XM      }; //
-            7'd017:  data <= {UOP_OPCODE_OUTPUT_FROM_NARROW,  UOP_CRT_Y,   UOP_NPQ_N,   UOP_AUX_DNC, UOP_LADDER_DNC, BANK_DNC,      BANK_NARROW_D,      BANK_DNC,    BANK_OUT_YM      }; //
+            7'd016:  data <= {UOP_OPCODE_OUTPUT_FROM_NARROW,  UOP_CRT_X,   UOP_NPQ_N,   UOP_AUX_1,   UOP_LADDER_DNC, BANK_DNC,      BANK_NARROW_D,      BANK_DNC,    BANK_OUT_XM      }; //
+            7'd017:  data <= {UOP_OPCODE_OUTPUT_FROM_NARROW,  UOP_CRT_Y,   UOP_NPQ_N,   UOP_AUX_1,   UOP_LADDER_DNC, BANK_DNC,      BANK_NARROW_D,      BANK_DNC,    BANK_OUT_YM      }; //
                                                                                                                                                                                          //            
             7'd018:  data <= {UOP_OPCODE_MODULAR_MULTIPLY,    UOP_CRT_DNC, UOP_NPQ_N,   UOP_AUX_1,   UOP_LADDER_11,  BANK_WIDE_E,   BANK_NARROW_B,      BANK_WIDE_C, BANK_NARROW_C    }; //
                                                                                                                                                                                          //
@@ -108,7 +108,7 @@ module modexpng_uop_rom
                                                                                                                                                                                          //
             7'd058:  data <= {UOP_OPCODE_PROPAGATE_CARRIES,   UOP_CRT_DNC, UOP_NPQ_N,   UOP_AUX_DNC, UOP_LADDER_DNC, BANK_DNC,      BANK_NARROW_A,      BANK_DNC,    BANK_NARROW_A    }; //
                                                                                                                                                                                          //
-            7'd059:  data <= {UOP_OPCODE_OUTPUT_FROM_NARROW,  UOP_CRT_X,   UOP_NPQ_N,   UOP_AUX_DNC, UOP_LADDER_DNC, BANK_DNC,      BANK_NARROW_A,      BANK_DNC,    BANK_OUT_S       }; //
+            7'd059:  data <= {UOP_OPCODE_OUTPUT_FROM_NARROW,  UOP_CRT_X,   UOP_NPQ_N,   UOP_AUX_1,   UOP_LADDER_DNC, BANK_DNC,      BANK_NARROW_A,      BANK_DNC,    BANK_OUT_S       }; //
             //
             // Non-CRT Mode (i.e. only when "D" is known)
             //
@@ -126,6 +126,38 @@ module modexpng_uop_rom
             7'd074:  data <= {UOP_OPCODE_INPUT_TO_NARROW,     UOP_CRT_X,   UOP_NPQ_N,   UOP_AUX_1,   UOP_LADDER_DNC, BANK_DNC,      BANK_IN_1_M,        BANK_DNC,    BANK_NARROW_E    }; //
             7'd075:  data <= {UOP_OPCODE_INPUT_TO_NARROW,     UOP_CRT_Y,   UOP_NPQ_N,   UOP_AUX_1,   UOP_LADDER_DNC, BANK_DNC,      BANK_IN_1_M,        BANK_DNC,    BANK_NARROW_E    }; //
                                                                                                                                                                                          //
+            7'd076:  data <= {UOP_OPCODE_MODULAR_MULTIPLY,    UOP_CRT_DNC, UOP_NPQ_N,   UOP_AUX_1,   UOP_LADDER_11,  BANK_WIDE_A,   BANK_NARROW_A,      BANK_WIDE_B, BANK_NARROW_B    }; //
+            7'd077:  data <= {UOP_OPCODE_MODULAR_MULTIPLY,    UOP_CRT_DNC, UOP_NPQ_N,   UOP_AUX_1,   UOP_LADDER_11,  BANK_WIDE_B,   BANK_NARROW_B,      BANK_WIDE_C, BANK_NARROW_C    }; //
+            7'd078:  data <= {UOP_OPCODE_MODULAR_MULTIPLY,    UOP_CRT_DNC, UOP_NPQ_N,   UOP_AUX_2,   UOP_LADDER_11,  BANK_WIDE_C,   BANK_DNC,           BANK_WIDE_D, BANK_NARROW_D    }; //
+                                                                                                                                                                                         //
+            7'd079:  data <= {UOP_OPCODE_PROPAGATE_CARRIES,   UOP_CRT_DNC, UOP_NPQ_N,   UOP_AUX_DNC, UOP_LADDER_DNC, BANK_DNC,      BANK_NARROW_D,      BANK_DNC,    BANK_NARROW_D    }; //
+
+            7'd080:  data <= {UOP_OPCODE_OUTPUT_FROM_NARROW,  UOP_CRT_X,   UOP_NPQ_N,   UOP_AUX_1,   UOP_LADDER_DNC, BANK_DNC,      BANK_NARROW_D,      BANK_DNC,    BANK_OUT_XM      }; //
+            7'd081:  data <= {UOP_OPCODE_OUTPUT_FROM_NARROW,  UOP_CRT_Y,   UOP_NPQ_N,   UOP_AUX_1,   UOP_LADDER_DNC, BANK_DNC,      BANK_NARROW_D,      BANK_DNC,    BANK_OUT_YM      }; //
+                                                                                                                                                                                         //            
+            7'd082:  data <= {UOP_OPCODE_MODULAR_MULTIPLY,    UOP_CRT_DNC, UOP_NPQ_N,   UOP_AUX_1,   UOP_LADDER_11,  BANK_WIDE_E,   BANK_NARROW_B,      BANK_WIDE_C, BANK_NARROW_C    }; //
+
+            7'd083:  data <= {UOP_OPCODE_INPUT_TO_WIDE,       UOP_CRT_X,   UOP_NPQ_N,   UOP_AUX_1,   UOP_LADDER_DNC, BANK_DNC,      BANK_IN_1_N_FACTOR, BANK_WIDE_A, BANK_DNC         }; //
+            7'd084:  data <= {UOP_OPCODE_INPUT_TO_WIDE,       UOP_CRT_Y,   UOP_NPQ_N,   UOP_AUX_1,   UOP_LADDER_DNC, BANK_DNC,      BANK_IN_1_N_FACTOR, BANK_WIDE_A, BANK_DNC         }; //
+
+            7'd085:  data <= {UOP_OPCODE_MODULAR_MULTIPLY,    UOP_CRT_DNC, UOP_NPQ_N,   UOP_AUX_1,   UOP_LADDER_11,  BANK_WIDE_C,   BANK_NARROW_A,      BANK_WIDE_D, BANK_NARROW_D    }; //
+            7'd086:  data <= {UOP_OPCODE_MODULAR_MULTIPLY,    UOP_CRT_DNC, UOP_NPQ_N,   UOP_AUX_2,   UOP_LADDER_11,  BANK_WIDE_A,   BANK_DNC,           BANK_WIDE_C, BANK_NARROW_C    }; //
+
+            7'd087:  data <= {UOP_OPCODE_COPY_LADDERS_X2Y,    UOP_CRT_DNC, UOP_NPQ_N,   UOP_AUX_DNC, UOP_LADDER_DNC, BANK_WIDE_D,   BANK_NARROW_D,      BANK_WIDE_C, BANK_NARROW_C    }; //
+
+            7'd088:  data <= {UOP_OPCODE_LADDER_INIT,         UOP_CRT_DNC, UOP_NPQ_DNC, UOP_AUX_DNC, UOP_LADDER_DNC, BANK_DNC,      BANK_DNC,           BANK_DNC,    BANK_DNC         }; //
+            7'd089:  data <= {UOP_OPCODE_MODULAR_MULTIPLY,    UOP_CRT_DNC, UOP_NPQ_N,   UOP_AUX_1,   UOP_LADDER_D,   BANK_WIDE_C,   BANK_NARROW_C,      BANK_WIDE_C, BANK_NARROW_C    }; //
+            7'd090:  data <= {UOP_OPCODE_LADDER_STEP,         UOP_CRT_DNC, UOP_NPQ_DNC, UOP_AUX_DNC, UOP_LADDER_DNC, BANK_DNC,      BANK_DNC,           BANK_DNC,    BANK_DNC         }; //
+
+            7'd091:  data <= {UOP_OPCODE_CROSS_LADDERS_X2Y,   UOP_CRT_DNC, UOP_NPQ_N,   UOP_AUX_DNC, UOP_LADDER_DNC, BANK_WIDE_B,   BANK_NARROW_B,      BANK_WIDE_B, BANK_NARROW_B    }; //
+
+            7'd092:  data <= {UOP_OPCODE_MODULAR_MULTIPLY,    UOP_CRT_DNC, UOP_NPQ_N,   UOP_AUX_2,   UOP_LADDER_11,  BANK_WIDE_C,   BANK_DNC,           BANK_WIDE_D, BANK_NARROW_D    }; //
+            7'd093:  data <= {UOP_OPCODE_MODULAR_MULTIPLY,    UOP_CRT_DNC, UOP_NPQ_N,   UOP_AUX_1,   UOP_LADDER_00,  BANK_WIDE_B,   BANK_NARROW_D,      BANK_WIDE_A, BANK_NARROW_A    }; //
+                                                                                                                                                                                         //
+            7'd094:  data <= {UOP_OPCODE_PROPAGATE_CARRIES,   UOP_CRT_DNC, UOP_NPQ_N,   UOP_AUX_DNC, UOP_LADDER_DNC, BANK_DNC,      BANK_NARROW_A,      BANK_DNC,    BANK_NARROW_A    }; //
+                                                                                                                                                                                         //
+            7'd095:  data <= {UOP_OPCODE_OUTPUT_FROM_NARROW,  UOP_CRT_Y,   UOP_NPQ_N,   UOP_AUX_2,   UOP_LADDER_DNC, BANK_DNC,      BANK_NARROW_A,      BANK_DNC,    BANK_OUT_S       }; //
+
             default: data <= {UOP_OPCODE_STOP,                UOP_CRT_DNC, UOP_NPQ_DNC, UOP_AUX_DNC, UOP_LADDER_DNC, BANK_DNC,      BANK_DNC,           BANK_DNC,    BANK_DNC         }; //
             //