From: Toni Wilen <twilen@winuae.net>
Date: Sat, 29 Apr 2023 12:27:27 +0000 (+0300)
Subject: Allow VPOSW vpos backwards move if previous vpos is out of range, in same field.
X-Git-Tag: 5.0.0~57
X-Git-Url: https://git.unchartedbackwaters.co.uk/w/?a=commitdiff_plain;h=33281de60cec156cbb7b323ad653fd18eebc6bf7;p=francis%2Fwinuae.git

Allow VPOSW vpos backwards move if previous vpos is out of range, in same field.
---

diff --git a/custom.cpp b/custom.cpp
index b71f833b..daecaa9a 100644
--- a/custom.cpp
+++ b/custom.cpp
@@ -7899,7 +7899,8 @@ static void VHPOSW_delayed(uae_u32 v)
 #endif
 	}
 	// don't allow backwards vpos (at least for now)
-	if (newvpos < oldvpos) {
+	// allow backwards if old vpos was out of range
+	if (newvpos < oldvpos && oldvpos <= maxvpos) {
 		newvpos = oldvpos;
 	} else if (newvpos < minfirstline && oldvpos < minfirstline) {
 		newvpos = oldvpos;