--- a/default.cfg	Wed Jan 18 21:30:20 2017 -0800
+++ b/default.cfg	Wed Jan 18 23:43:36 2017 -0800
@@ -111,6 +111,31 @@
 	scanlines off
 	vsync off
 	fullscreen off
+	ntsc {
+		overscan {
+			#these values will result in square pixels in H40 mode
+			top 2
+			bottom 1
+			#if you want to completely hide the border instead
+			#comment out those two lines and uncomment these
+			#top 11
+			#bottom 8
+		}
+	}
+	pal {
+		overscan {
+			#these values will produce the same size border in V30 mode
+			#as the default NTSC settings will produce in V24 mode
+			#this results in a slightly vertically squished picture
+			#which is probably approximately correct on a properly calibrated TV
+			top 21
+			bottom 17
+			#for square pixels and zero border in V30 mode
+			#coment out those two lines and uncomment these
+			#top 30
+			#bottom 24
+		}
+	}
 }
 
 audio {