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Diffstat (limited to 'rtl/modexpng_recombinator_cell.v')
-rw-r--r-- | rtl/modexpng_recombinator_cell.v | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/rtl/modexpng_recombinator_cell.v b/rtl/modexpng_recombinator_cell.v new file mode 100644 index 0000000..1ecf56a --- /dev/null +++ b/rtl/modexpng_recombinator_cell.v @@ -0,0 +1,35 @@ +module modexpng_recombinator_cell +( + clk, + ce, clr, + din, dout +); + + input clk; + input ce; + input clr; + input [46:0] din; + output [15:0] dout; + + reg [14:0] z; + reg [16:0] y; + reg [17:0] x; + //reg [15:0] w; + + //assign dout = w; + assign dout = x[15:0]; + + wire [14:0] din_z = din[46:32]; // TODO: maybe determine more precise bound here + wire [15:0] din_y = din[31:16]; + wire [15:0] din_x = din[15: 0]; + + always @(posedge clk) + // + if (ce) begin + z <= din_z; + y <= clr ? {1'b0, din_y} : {1'b0, din_y} + {2'b00, z}; + x <= clr ? {2'b00, din_x} : {2'b00, din_x} + {1'b0, y} + {{16{1'b0}}, x[17:16]}; + //w <= clr ? {16{1'bX}} : x[15:0]; + end + +endmodule |