diff --git a/README.md b/README.md
index f5e0e34..6bd4e6a 100644
--- a/README.md
+++ b/README.md
@@ -10,13 +10,13 @@ the minimum memory requirement may be less than 64k.
 
 |Start|Size|Function|
 |--|--|--|
-|F000|4k|BDOS and hw drivers|
+|0xF000|4k|BDOS and hw drivers|
 ||var|BDOS data|
 |SP|var|Stack, growing down|
 |||Free memory|
-|0100|up to stack|Transient Program Area|
-|0080|128 bytes|Command line and disk buffer|
-|0000|128 bytes|System data area|
+|0x0100|up to stack|Transient Program Area|
+|0x0080|128 bytes|Command line and disk buffer|
+|0x0000|128 bytes|System data area|
 
 ## Application program interface