X-Git-Url: http://v3vee.org/palacios/gitweb/gitweb.cgi?a=blobdiff_plain;f=palacios%2Fsrc%2Fdevices%2Fcga.c;h=3a775637e4dc1b34b819666f502156abddeac440;hb=0fe8e057d19e132f88ab71dce8724b2c5585803a;hp=aabe81072351e785a9829fec4bdbe90751ccfd25;hpb=b54cbe1dbbe15ed228de7472ea284df96ecce909;p=palacios-OLD.git

diff --git a/palacios/src/devices/cga.c b/palacios/src/devices/cga.c
index aabe810..3a77563 100644
--- a/palacios/src/devices/cga.c
+++ b/palacios/src/devices/cga.c
@@ -28,12 +28,12 @@
 
 
 
-/*
+
 #ifndef DEBUG_CGA
 #undef PrintDebug
 #define PrintDebug(fmt, args...)
 #endif
-*/
+
 
 #define START_ADDR 0xB8000
 #define END_ADDR 0xC0000
@@ -58,9 +58,11 @@ struct video_internal {
 
     uint8_t crtc_index_reg;          // io port 3D4
     uint8_t crtc_data_regs[25];      // io port 3D5
-
+    
+    /* IMPORTANT: These are column offsets _NOT_ byte offsets */
     uint16_t screen_offset; // relative to the framebuffer
     uint16_t cursor_offset; // relative to the framebuffer
+    /* ** */
 
     // updating the screen offset is not atomic, 
     // so we need a temp variable to hold the partial update