1 files changed, 4 insertions, 3 deletions
diff --git a/z80.h b/z80.h
index 9683e3f..af0017b 100644
--- a/z80.h
+++ b/z80.h
@@ -44,20 +44,21 @@ typedef struct Z80 Z80;
 typedef unsigned long Z80Val;
 
 
-/* 8-bit type
+/* 8-bit type.  The emulation will exit with code 2 if this isn't 8 bits.
 */
 typedef unsigned char Z80Byte;
 
 
-/* 8-bit signed type
+/* 8-bit signed type.  The emulation will exit with code 2 if this isn't 8 bits.
 */
 typedef signed char Z80Relative;
 
 
-/* 16-bit type
+/* 16-bit type.  The emulation will exit with code 2 if this isn't 16 bits.
 */
 typedef unsigned short Z80Word;
 
+
 /* Memory
 */
 typedef Z80Byte Z80Memory[0x10000];