From: Toni Wilen <twilen@winuae.net>
Date: Mon, 12 Feb 2024 19:08:41 +0000 (+0200)
Subject: 68060 custom register byte write bug emulation fix
X-Git-Tag: 5200~8
X-Git-Url: https://git.unchartedbackwaters.co.uk/w/?a=commitdiff_plain;h=964c060e17154861b36eceeb0ec10d7fe5126d1b;p=francis%2Fwinuae.git

68060 custom register byte write bug emulation fix
---

diff --git a/custom.cpp b/custom.cpp
index 04d88605..07c7bc98 100644
--- a/custom.cpp
+++ b/custom.cpp
@@ -15415,7 +15415,7 @@ static void REGPARAM2 custom_bput (uaecptr addr, uae_u32 value)
 		if (addr & 1) {
 			rval = value & 0xff;
 		} else {
-			rval = (value << 8) | (value & 0xFF);
+			rval = (value << 8) | (value & 0xff);
 		}
 	} else {
 		rval = (value << 8) | (value & 0xff);
@@ -15423,11 +15423,11 @@ static void REGPARAM2 custom_bput (uaecptr addr, uae_u32 value)
 
 	if (currprefs.cs_bytecustomwritebug) {
 		if (addr & 1)
-			custom_wput (addr & ~1, rval);
+			custom_wput(addr & ~1, rval | (rval << 8));
 		else
-			custom_wput (addr, value << 8);
+			custom_wput(addr, value << 8);
 	} else {
-		custom_wput (addr & ~1, rval);
+		custom_wput(addr & ~1, rval);
 	}
 }