Initial commit

2021-02-28 18:59:56 +03:00
parent ff795d2b6e
commit 2fbacc0544
61 changed files with 6063 additions and 0 deletions
--- a/source/ice40_2mac8x8.sv
+++ b/source/ice40_2mac8x8.sv
@@ -0,0 +1,81 @@
+`timescale 1ns/100ps
+`default_nettype none
+
+/* verilator lint_off PINCONNECTEMPTY */
+
+module ice40_2mac8x8 #(parameter SIGNED = 0)
+    (input wire clock,
+     input wire reset,
+     input wire [7:0] a0,
+     input wire [7:0] b0,
+     input wire [15:0] s0,
+     input wire sub0,
+     output wire [15:0] y0,
+
+     input wire [7:0] a1,
+     input wire [7:0] b1,
+     input wire [15:0] s1,
+     input wire sub1,
+     output wire [15:0] y1);
+
+    /* register 'sub' input */
+    logic sub0_r, sub1_r;
+    always_ff @ (posedge clock) begin
+        sub0_r <= sub0;
+        sub1_r <= sub1;
+    end
+
+    logic [31:0] mac_o;
+    assign {y0, y1} = mac_o;
+
+    SB_MAC16
+      #(.NEG_TRIGGER(1'b0),
+        .C_REG(1'b1),                       // Registered C
+        .A_REG(1'b1),                       // Registered A
+        .B_REG(1'b1),                       // Registered B
+        .D_REG(1'b1),                       // Registered D
+        .TOP_8x8_MULT_REG(1'b0),
+        .BOT_8x8_MULT_REG(1'b0),
+        .PIPELINE_16x16_MULT_REG1(1'b0),
+        .PIPELINE_16x16_MULT_REG2(1'b0),
+        .TOPOUTPUT_SELECT(2'b00),           // TOP output - ADD/SUB unregistered
+        .TOPADDSUB_LOWERINPUT(2'b01),       // TOP adder input 1 - 8x8 top multiplier output
+        .TOPADDSUB_UPPERINPUT(1'b1),        // TOP adder input 2 - input C
+        .TOPADDSUB_CARRYSELECT(2'b00),      // TOP adder carry input - constant 0
+        .BOTOUTPUT_SELECT(2'b00),           // BOT output - ADD/SUB unregistered
+        .BOTADDSUB_LOWERINPUT(2'b01),       // BOT adder input 1 - 8x8 bot multiplier output
+        .BOTADDSUB_UPPERINPUT(1'b1),        // BOT adder input 2 - input D
+        .BOTADDSUB_CARRYSELECT(2'b00),      // BOT adder carry input - constant 0
+        .MODE_8x8(1'b1),
+        .A_SIGNED(SIGNED),
+        .B_SIGNED(SIGNED))
+    mac_r
+      (.CLK(clock),
+       .CE(1'b1),
+       .C(s0),
+       .A({a0, a1}),
+       .B({b0, b1}),
+       .D(s1),
+       .AHOLD(1'b0),
+       .BHOLD(1'b0),
+       .CHOLD(1'b0),
+       .DHOLD(1'b0),
+       .IRSTTOP(reset),
+       .IRSTBOT(reset),
+       .ORSTTOP(reset),
+       .ORSTBOT(reset),
+       .OLOADTOP(1'b0),
+       .OLOADBOT(1'b0),
+       .ADDSUBTOP(sub0_r),
+       .ADDSUBBOT(sub1_r),
+       .OHOLDTOP(1'b0),
+       .OHOLDBOT(1'b0),
+       .CI(1'b0),
+       .ACCUMCI(1'b0),
+       .SIGNEXTIN(1'b0),
+       .O(mac_o),
+       .CO(),
+       .ACCUMCO(),
+       .SIGNEXTOUT());
+
+endmodule // ice40_macadd16x16