diff --git a/.gitignore b/.gitignore
index 103618f..9f2164b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -19,3 +19,8 @@ graph2.pas
 chase.pas
 *.img
 !runtime.s
+**/tridoracpu.*/
+rtl/arty-a7/mig_dram_0/_tmp
+rtl/arty-a7/mig_dram_0/mig_dram_0
+rtl/arty-a7/mig_dram_0/xil_txt.*
+rtl/arty-a7/mig_dram_0/*.veo
diff --git a/examples/LICENSES.md b/examples/LICENSES.md
index 32ad7df..8992b88 100644
--- a/examples/LICENSES.md
+++ b/examples/LICENSES.md
@@ -1,3 +1,5 @@
+# rtpair.pas
+originally from [https://github.com/Postrediori/Pascal-Raytracer](https://github.com/Postrediori/Pascal-Raytracer), no license specified there
 # Attributions for included media files
 * ara.pict: Tuxyso / Wikimedia Commons / CC-BY-SA-3.0
 https://commons.wikimedia.org/wiki/File:Ara-Zoo-Muenster-2013.jpg
diff --git a/tridoraemu/README.md b/tridoraemu/README.md
index f7ac81c..0ec332b 100644
--- a/tridoraemu/README.md
+++ b/tridoraemu/README.md
@@ -23,7 +23,7 @@ On the first run, this may take a while as the go build system fetches some exte
 Start the *tridoraemu* binary in the same directory as the SD-Card image file (*sdcard.img*) and the ROM file (*rommon.prog*). It needs to be started on the command line as it uses the terminal window for the serial console. On startup, the emulator opens the VGA framebuffer window which is only used for graphics output.
 
 
-The Tridora software (esp. the editor) requires a decent vt100-compatible (plus colors) terminal emulator. It has been successfully tested with (new) Windows Terminal, WezTerm and xterm.
+The Tridora software (esp. the editor) requires a decent vt100-compatible (plus colors) terminal emulator. It has been successfully tested with (new) Windows Terminal, Alacritty, WezTerm and xterm.
 
 The color scheme in the editor is meant for a dark terminal background.