From 40d977e047bc15bf9ea89533f8dc415495ce40c1 Mon Sep 17 00:00:00 2001
From: ethosdev <79124435+ethosdev@users.noreply.github.com>
Date: Wed, 28 Sep 2022 16:35:32 -0700
Subject: [PATCH] Supplant DIFFICULTY opcode with PREVRANDAO

Reference: https://eips.ethereum.org/EIPS/eip-4399

Since the Merge, opcode 0x44 returns the output of the randomness beacon provided by the beacon chain
---
 packages/evm/src/opcodes/codes.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/evm/src/opcodes/codes.ts b/packages/evm/src/opcodes/codes.ts
index ec1c318f83..00f64ebc4d 100644
--- a/packages/evm/src/opcodes/codes.ts
+++ b/packages/evm/src/opcodes/codes.ts
@@ -101,7 +101,7 @@ const opcodes: OpcodeEntry = {
   0x41: { name: 'COINBASE', isAsync: true, dynamicGas: false },
   0x42: { name: 'TIMESTAMP', isAsync: true, dynamicGas: false },
   0x43: { name: 'NUMBER', isAsync: true, dynamicGas: false },
-  0x44: { name: 'DIFFICULTY', isAsync: true, dynamicGas: false },
+  0x44: { name: 'PREVRANDAO', isAsync: true, dynamicGas: false },
   0x45: { name: 'GASLIMIT', isAsync: true, dynamicGas: false },
 
   // 0x50 range - 'storage' and execution