From 7f40da559545165528f0690be76c7909b8afa7ec Mon Sep 17 00:00:00 2001
From: nsx0r <nnssxx@gmail.com>
Date: Thu, 11 May 2023 21:01:12 +0200
Subject: [PATCH] [NES] Fixed mapper 228

[NES] Fixed mapper 228
---
 Cart_Reader/NES.ino | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/Cart_Reader/NES.ino b/Cart_Reader/NES.ino
index d4a8bc8..7d245a6 100644
--- a/Cart_Reader/NES.ino
+++ b/Cart_Reader/NES.ino
@@ -3593,13 +3593,14 @@ void readPRG(bool readrom) {
 
       case 228:
         banks = int_pow(2, prgsize);
+        write_prg_byte(0x8000, 0);
         for (int i = 0; i < banks; i += 2) {  // up to 1024k PRG
           write_prg_byte(0x8000 + ((i & 0x3F) << 6), 0);
           for (word address = 0x0; address < 0x8000; address += 512) {
             dumpPRG(base, address);
           }
         }
-        if (prgsize > 6) {  // reading the 3rd 512k PRG chip (Action 52)
+        if (prgsize > 5) {  // reading the 3rd 512k PRG chip (Action 52)
           for (int i = 0; i < 32; i += 2) {
             write_prg_byte(0x9800 + ((i & 0x1F) << 6), 0);
             for (word address = 0x0; address < 0x8000; address += 512) {
@@ -4665,8 +4666,9 @@ void readCHR(bool readrom) {
 
         case 228:
           banks = int_pow(2, chrsize) / 2;
+          write_prg_byte(0x8000, 0);
           for (int i = 0; i < banks; i++) {
-            write_prg_byte((0x8000 + (i & 0x3C)) >> 2, (i & 0x03));
+            write_prg_byte(0x8000 + ((i & 0x3C) >> 2), i & 0x03);
             for (word address = 0x0; address < 0x2000; address += 512) {
               dumpCHR(address);
             }