From 214508ea1541c0670c4fa7453ec253eba9337232 Mon Sep 17 00:00:00 2001
From: Jon Langseth <jon.langseth@lilug.no>
Date: Thu, 27 Jun 2013 17:50:50 +0200
Subject: [PATCH] Changed syncgen to allow disabling of background image. By
 defining DRAW_LOGO the backgound will be drawn. If not defined (undef'd) only
 sync-signals will be generated.

---
 syncgen/main.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/syncgen/main.c b/syncgen/main.c
index 1dbfefb..3186c91 100644
--- a/syncgen/main.c
+++ b/syncgen/main.c
@@ -5,6 +5,8 @@
 #define ZERO  PORTB &= 0xFC
 #define BLACK PORTB |= 0x01
 
+#define DRAW_LOGO
+
 //          -----..-----   ^
 //          | ___        |  |
 // Com RST -| RST    VCC |-`
@@ -136,7 +138,7 @@ ISR (TIMER0_COMPA_vect)
 
 		int t_line = line; // Reducing line-count complexity by half ;)
 		t_line = ( line > 312 ) ? line - 312 : line;
-
+#ifdef DRAW_LOGO
 		// Draw the logo-image centered vertically
 		if ( t_line > 118 && t_line < 118 + (2*testimg_height) )
 		{
@@ -152,7 +154,8 @@ ISR (TIMER0_COMPA_vect)
 				if ( renderLine > ((testimg_height*hres)-1) ) renderLine = 0;
 			} else stretch--;
 		}
-	}
+#endif
+		}
 	return;
 }
 
-- 
2.39.2