Update latency tester

* Enable operation with all sources
* Measure strobe length on low-persistence displays

rtl/lat_tester_includes.v

@@ -0,0 +1,26 @@
+//
+// Copyright (C) 2017  Markus Hiienkari <mhiienka@niksula.hut.fi>
+//
+// This file is part of Open Source Scan Converter project.
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+//
+
+`define LT_POS_NONE         2'b00
+`define LT_POS_TOPLEFT      2'b01
+`define LT_POS_CENTER       2'b10
+`define LT_POS_BOTTOMRIGHT  2'b11
+
+`define LT_WIDTH_DIV        8
+`define LT_HEIGHT_DIV       8