- fixed bounds check error

git-svn-id: http://moon:8086/svn/vhdl/trunk@1510 cc03376c-175c-47c8-b038-4cd826a8556b
2021-03-24 10:11:06 +00:00
parent 018cb85f4b
commit 9d6ab7b156
1 changed files with 3 additions and 1 deletions
@@ -137,9 +137,11 @@ proc_bus_read_counter:
 			elsif cmd_read_en = '1' and read_fifo_empty = '1' then
 				read_cnt <= read_cnt + 1;
 			elsif cmd_read_en = '0' and read_fifo_empty = '0' and dout_re = '1' then
+				if read_cnt > 0 then
 					read_cnt <= read_cnt - 1;
 				end if;
 			end if;	
+		end if;
 	end process;	

 jbus_state_fsm_next: