From a60f99848f2d4dbdcc9d46fac4f99e08b90ec2f3 Mon Sep 17 00:00:00 2001
From: toxieainc <toxie@ainc.de>
Date: Mon, 8 Aug 2022 09:18:59 +0200
Subject: [PATCH] Revert "port some changes from MAME/MESS"

This reverts commit b5f3d8b68e1ae62a08b00a730b6b8150758c0af3.
---
 Src/CPU/Z80/Z80.cpp | 12 ++----------
 1 file changed, 2 insertions(+), 10 deletions(-)

diff --git a/Src/CPU/Z80/Z80.cpp b/Src/CPU/Z80/Z80.cpp
index 3967ffd..370f94c 100644
--- a/Src/CPU/Z80/Z80.cpp
+++ b/Src/CPU/Z80/Z80.cpp
@@ -2698,7 +2698,7 @@ int CZ80::Run(int numCycles)
       break;
     case 0x71:      /* OUT (C),0 */
       cycles -= cycleTables[2][0x71];
-      OUTPUT(lreg(BC), lreg(0));
+      OUTPUT(lreg(BC), 0);
       break;
     case 0x72:      /* SBC HL,SP */
       cycles -= cycleTables[2][0x72];
@@ -2821,8 +2821,6 @@ int CZ80::Run(int numCycles)
       cycles -= cycleTables[2][0xB0];
       acu = hreg(AF);
       BC &= 0xffff;
-      if (BC == 0)
-        BC = 0x10000;
       do {
         acu = GetBYTE_pp(HL);
         PutBYTE_pp(DE, acu);
@@ -2834,8 +2832,6 @@ int CZ80::Run(int numCycles)
       cycles -= cycleTables[2][0xB1];
       acu = hreg(AF);
       BC &= 0xffff;
-      if (BC == 0)
-        BC = 0x10000;
       do {
         temp = GetBYTE_pp(HL);
         op = --BC != 0;
@@ -2872,8 +2868,6 @@ int CZ80::Run(int numCycles)
     case 0xB8:      /* LDDR */
       cycles -= cycleTables[2][0xB8];
       BC &= 0xffff;
-      if (BC == 0)
-        BC = 0x10000;
       do {
         acu = GetBYTE_mm(HL);
         PutBYTE_mm(DE, acu);
@@ -2885,8 +2879,6 @@ int CZ80::Run(int numCycles)
       cycles -= cycleTables[2][0xB9];
       acu = hreg(AF);
       BC &= 0xffff;
-      if (BC == 0)
-        BC = 0x10000;
       do {
         temp = GetBYTE_mm(HL);
         op = --BC != 0;
@@ -3513,7 +3505,7 @@ int CZ80::Run(int numCycles)
       break;
     case 0xCB:      /* CB prefix */
       adr = IY + (signed char) GetBYTE_pp(pc);
-      //adr = adr;
+      adr = adr;
       op = GetBYTE(pc);
       cycles -= cycleTables[4][op];
       switch (op & 7) {