From: Toni Wilen <twilen@winuae.net>
Date: Thu, 29 Jan 2026 16:24:17 +0000 (+0200)
Subject: Use UAE Z3 mode if 32-bit chip ram size is 1G
X-Git-Url: https://git.unchartedbackwaters.co.uk/w/?a=commitdiff_plain;h=025345a805fe5a945c401366743722e21b4ba4b0;p=francis%2Fwinuae.git

Use UAE Z3 mode if 32-bit chip ram size is 1G
---

diff --git a/expansion.cpp b/expansion.cpp
index ad52e506..c46dd062 100644
--- a/expansion.cpp
+++ b/expansion.cpp
@@ -287,10 +287,15 @@ void set_expamem_z3_hack_mode(int mode)
 
 bool expamem_z3hack(struct uae_prefs *p)
 {
-	if (z3hack_override == Z3MAPPING_UAE)
+	if (p->z3chipmem.size >= 0x40000000) {
 		return true;
-	if (z3hack_override == Z3MAPPING_REAL)
+	}
+	if (z3hack_override == Z3MAPPING_UAE) {
+		return true;
+	}
+	if (z3hack_override == Z3MAPPING_REAL) {
 		return false;
+	}
 	return p->z3_mapping_mode == Z3MAPPING_UAE || cpuboard_memorytype(p) == BOARD_MEMORY_BLIZZARD_12xx;
 }