Small updates to EIP-663 (#6054)

* Change opcodes to 0xb3 and 0xb4 * Add security considerations
ethereum · Nov 28, 2022 · 0d650fc · 0d650fc
1 parent b9529eb
commit 0d650fc
Showing 1 changed file with 3 additions and 3 deletions.
diff --git a/EIPS/eip-663.md b/EIPS/eip-663.md
@@ -29,8 +29,8 @@ Introducing `SWAPN` and `DUPN` will provide an option to compilers to simplify a
 
 We introduce two new instructions:
 
- 1. `DUPN` (`0xb0`)
- 2. `SWAPN` (`0xb1`)
+ 1. `DUPN` (`0xb3`)
+ 2. `SWAPN` (`0xb4`)
 
 If the code is legacy bytecode, both of these instructions result in an *exceptional halt*. (*Note: This means no change to behaviour.*)
 
@@ -61,7 +61,7 @@ TBA
 
 ## Security Considerations
 
-TBA
+The authors are not aware of any additional risks introduced here. The EVM stack is fixed at 1024 items and most implementations keep that in memory at all times. This change will increase the easy-to-access number of items from 16 to 256.
 
 ## Copyright