Update RTG readme

diff --git a/platforms/amiga/rtg/readme.md b/platforms/amiga/rtg/readme.md
index c57a3ac713d6f4eb80c1fe9d58786873ce5211b6..71b6eda438eb854186254473ddd7b9d09f9db258 100644 (file)
--- a/platforms/amiga/rtg/readme.md
+++ b/platforms/amiga/rtg/readme.md
@@ -10,6 +10,10 @@ Some familiarity with P96 and AmigaOS is currently required, as you have to edit
 
 (RTG video output is over the Raspberry Pi HDMI.)
 
 
 (RTG video output is over the Raspberry Pi HDMI.)
 

+**Note**: The RTG has been rewritten to use raylib instead of SDL. Precompiled raylib libraries are included, there is no need to install any additional dependencies when building the emulator.  
+For raylib to work in the console on a Pi 3, the OpenGL driver must **not** be enabled. If you have the line `dtoverlay=vc4-kms-v3d` enabled for your system setup in `/boot/config.txt`, either comment it out or remove the line.  
+If you are for some reason wanting to test the RTG on a Raspberry Pi 4, you are on your own. Not only can't I test it, you must also install a distro with some flavor of X window manager for it to perform well at all.
+

 # Instructions
 
 Setup for PiGFX/PiStorm RTG is not entirely straightforward, unlike PiSCSI some files need to be transferred to the Amiga side. Here are the steps required to get PiStorm RTG up and running:
 # Instructions
 
 Setup for PiGFX/PiStorm RTG is not entirely straightforward, unlike PiSCSI some files need to be transferred to the Amiga side. Here are the steps required to get PiStorm RTG up and running: