From c88beacfc7aff870272f78ce6043010e2299e211 Mon Sep 17 00:00:00 2001
From: Julian Blake Kongslie
Date: Sun, 13 Mar 2022 16:48:51 -0700
Subject: Print a newline after memory read result prints.

---
 hdl/result_printer.sv | 58 ++++++++++++++++++++++++++++-----------------------
 1 file changed, 32 insertions(+), 26 deletions(-)

diff --git a/hdl/result_printer.sv b/hdl/result_printer.sv
index 3041e6e..4f27d0e 100644
--- a/hdl/result_printer.sv
+++ b/hdl/result_printer.sv
@@ -1,8 +1,7 @@
 `include "defs.svh"
 
 module result_printer
-    #(  TAG = 0
-    ) ( input   bit                 clock
+    (   input   bit                 clock
     ,   input   bit                 reset
 
     ,   output  bit                 result_ready
@@ -14,6 +13,7 @@ module result_printer
     ,   output  uart_byte_t echo_data
     );
 
+    bit                 hold_valid;
     ram_read_response_t hold;
     ram_byte_count_t    byte_count;
     ram_word_count_t    word_count;
@@ -28,43 +28,49 @@ module result_printer
             result_ready = 0;
             echo_valid = 0;
             echo_data = 0;
+            hold_valid = 0;
             byte_count = 0;
             word_count = 0;
             state = state.first;
         end else begin
             if (echo_ready) echo_valid = 0;
             if (result_ready && result_valid) begin
+                hold_valid = 1;
                 hold = result_data;
-                if (hold.tag == TAG) begin
-                    byte_count = `RAM_WORD_BYTES;
-                    word_count = `RAM_LINE_WORDS;
-                    state = state.first;
-                end
+                byte_count = `RAM_WORD_BYTES;
+                word_count = `RAM_LINE_WORDS;
+                state = state.first;
             end
 
-            if (word_count != 0 && !echo_valid) begin
-                automatic ram_word_t w = hold.data[word_count-1];
-                automatic ram_byte_t b = w[byte_count-1];
-                echo_valid = 1;
-                case (state)
-                HIGH_NIBBLE: echo_data = b[7:4];
-                LOW_NIBBLE: echo_data = b[3:0];
-                endcase
-                if (echo_data < 10)
-                    echo_data = echo_data + "0";
-                else
-                    echo_data = echo_data + "A" - 10;
-                state = state.next;
-                if (state == state.first) begin
-                    byte_count = byte_count - 1;
-                    if (byte_count == 0) begin
-                        byte_count = `RAM_WORD_BYTES;
-                        word_count = word_count - 1;
+            if (hold_valid && !echo_valid) begin
+                if (word_count != 0) begin
+                    automatic ram_word_t w = hold.data[word_count-1];
+                    automatic ram_byte_t b = w[byte_count-1];
+                    echo_valid = 1;
+                    case (state)
+                    HIGH_NIBBLE: echo_data = b[7:4];
+                    LOW_NIBBLE: echo_data = b[3:0];
+                    endcase
+                    if (echo_data < 10)
+                        echo_data = echo_data + "0";
+                    else
+                        echo_data = echo_data + "A" - 10;
+                    state = state.next;
+                    if (state == state.first) begin
+                        byte_count = byte_count - 1;
+                        if (byte_count == 0) begin
+                            byte_count = `RAM_WORD_BYTES;
+                            word_count = word_count - 1;
+                        end
                     end
+                end else begin
+                    echo_valid = 1;
+                    echo_data = "\n";
+                    hold_valid = 0;
                 end
             end
 
-            result_ready = word_count == 0;
+            result_ready = !hold_valid;
         end
     end
 
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