From 5c1df6d27f5dac143efc9ce84689b863dbee45bd Mon Sep 17 00:00:00 2001
From: Julian Blake Kongslie
Date: Wed, 24 Mar 2021 08:35:07 -0700
Subject: Reorganize repo layout to make it a little easier to work within.

---
 top.sv | 152 -----------------------------------------------------------------
 1 file changed, 152 deletions(-)
 delete mode 100644 top.sv

(limited to 'top.sv')

diff --git a/top.sv b/top.sv
deleted file mode 100644
index 0244020..0000000
--- a/top.sv
+++ /dev/null
@@ -1,152 +0,0 @@
-`include "utils.svh"
-
-module top
-    #(  FIB_BITS = 16
-    ,   FIB_BASE = 10
-    ,   FIB_DIGITS = 5
-
-    ,   ROM_BITS = 8
-    )
-    (   input   bit clk     // verilator public
-    ,   input   bit reset_n // verilator public
-    );
-
-bit reset;
-assign reset = !reset_n;
-
-bit [7:0] rom [0:(1<<ROM_BITS)-1];
-initial $readmemh("rom.hex", rom);
-
-bit [ROM_BITS-1:0] addr;
-
-bit rx_ready;
-bit rx_valid;
-bit [7:0] rx_data;
-
-bit tx_ready;
-bit tx_valid;
-bit [7:0] tx_data;
-
-jtag_uart
-    #(  .INSTANCE(0)
-    ) uart0
-    (   .clk(clk)
-    ,   .reset(reset)
-
-    ,   .rx_ready(rx_ready)
-    ,   .rx_valid(rx_valid) `define rx_valid `past(rx_valid)
-    ,   .rx_data(rx_data)   `define rx_data `past(rx_data)
-
-    ,   .tx_ready(tx_ready) `define tx_ready `past(tx_ready)
-    ,   .tx_valid(tx_valid)
-    ,   .tx_data(tx_data)
-    );
-
-bit fib_ready;
-bit fib_valid;
-bit [FIB_BITS-1:0] fib_data;
-
-fibseq
-    #(  .BITS(FIB_BITS)
-    ) fib
-    (   .clk(clk)
-    ,   .reset(reset)
-
-    ,   .ready(fib_ready)
-    ,   .valid(fib_valid)
-    ,   .data(fib_data)
-    );
-
-bit fib_a_ready;
-bit fib_a_valid;
-bit [7:0] fib_a_data;
-
-ntoa
-    #(  .BITS(FIB_BITS)
-    ,   .BASE(FIB_BASE)
-    ,   .DIGITS(FIB_DIGITS)
-    ) fib_ntoa
-    (   .clk(clk)
-    ,   .reset(reset)
-
-    ,   .n_ready(fib_ready)
-    ,   .n_valid(fib_valid)
-    ,   .n_data(fib_data)
-
-    ,   .a_ready(fib_a_ready)
-    ,   .a_valid(fib_a_valid)   `define fib_a_valid `past(fib_a_valid)
-    ,   .a_data(fib_a_data)     `define fib_a_data `past(fib_a_data)
-    );
-
-enum
-    {   INTRO_ECHO
-    ,   ECHO
-    ,   INTRO_FIB
-    ,   FIB
-    } state;
-
-bit tmp_valid;
-bit [7:0] tmp_data;
-
-always_ff @(posedge clk) begin
-    if (reset) begin
-        addr = 0;
-        rx_ready = 0;
-        tx_valid = 0;
-        fib_a_ready = 0;
-        state = state.first;
-        tmp_valid = 0;
-    end else case (state)
-
-        INTRO_ECHO, INTRO_FIB: begin
-            automatic bit [7:0] data = rom[addr];
-            if (`tx_ready) tx_valid = 0;
-            if (!tx_valid && (data != 0)) begin
-                tx_valid = 1;
-                tx_data = data;
-                ++addr;
-            end else if (data == 0) begin
-                ++addr;
-                state = state.next;
-            end
-        end
-
-        ECHO: begin
-            if (`tx_ready && tx_valid && tx_data == "\n") begin
-                // FIXME race; we aren't going to consume input this cycle, but we might have tmp_valid or rx_ready asserted
-                rx_ready = 0;
-                tx_valid = 0;
-                state = INTRO_FIB;
-            end else begin
-                if (`tx_ready) tx_valid = 0;
-                if (rx_ready && `rx_valid) begin
-                    tmp_valid = 1;
-                    tmp_data = `rx_data;
-                end
-                if (!tx_valid && tmp_valid) begin
-                    tx_valid = 1;
-                    tx_data = tmp_data;
-                    tmp_valid = 0;
-                end
-                rx_ready = !tmp_valid;
-            end
-        end
-
-        FIB: begin
-            if (`tx_ready) tx_valid = 0;
-            if (fib_a_ready && `fib_a_valid) begin
-                tmp_valid = 1;
-                tmp_data = `fib_a_data;
-            end
-            if (!tx_valid && tmp_valid) begin
-                tx_valid = 1;
-                tx_data = tmp_data;
-                tmp_valid = 0;
-            end
-            fib_a_ready = !tmp_valid;
-        end
-
-    endcase
-end
-
-endmodule
-- 
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