packed screen struct to 2 bytes, saved 2 kB of RAM

8 years ago · bbb56541f8
parent 1d52cd551a
commit bbb56541f8
1 changed files with 5 additions and 5 deletions
--- a/user/screen.c
+++ b/user/screen.c
@ -10,12 +10,12 @@
 #define COLOR_MAX 15
 /**
- * Screen cell data type
+ * Screen cell data type (16 bits)
 */
-typedef struct {
+typedef struct __attribute__((packed)){
-	char c;
+	char c   : 8;
-	Color fg;
+	Color fg : 4;
-	Color bg;
+	Color bg : 4;
 } Cell;
 /**