From b4a74154747024406b0fb5843b96137e83694366 Mon Sep 17 00:00:00 2001
From: Toni Wilen <twilen@winuae.net>
Date: Fri, 1 Oct 2021 22:49:45 +0300
Subject: [PATCH] Lores resolution mode HDIW fix.

---
 custom.cpp | 20 +++++++++++++-------
 1 file changed, 13 insertions(+), 7 deletions(-)

diff --git a/custom.cpp b/custom.cpp
index 344ac025..d59c46ed 100644
--- a/custom.cpp
+++ b/custom.cpp
@@ -670,19 +670,25 @@ static void setclr(uae_u16 *p, uae_u16 val)
 
 static int adjust_hr(int v)
 {
-	if (currprefs.chipset_hr) {
-		v &= ~(3 >> currprefs.gfx_resolution);
+	if (currprefs.gfx_resolution >= RES_HIRES) {
+		if (currprefs.chipset_hr) {
+			v &= ~(3 >> currprefs.gfx_resolution);
+		} else {
+			v &= ~3;
+		}
 	} else {
-		v &= ~3;
+		v &= ~1;
 	}
 	return v;
 }
 static int adjust_hr2(int v)
 {
-	if (currprefs.chipset_hr) {
-		v &= ~(1 >> currprefs.gfx_resolution);
-	} else {
-		v &= ~1;
+	if (currprefs.gfx_resolution >= RES_HIRES) {
+		if (currprefs.chipset_hr) {
+			v &= ~(1 >> currprefs.gfx_resolution);
+		} else {
+			v &= ~1;
+		}
 	}
 	return v;
 }
-- 
2.47.3