From: Toni Wilen <twilen@winuae.net>
Date: Sat, 16 Jan 2021 14:20:39 +0000 (+0200)
Subject: Skip last D write if D channel was disabled.
X-Git-Tag: 4900~206
X-Git-Url: https://git.unchartedbackwaters.co.uk/w/?a=commitdiff_plain;h=327a24979a8f5e9c665a418ca38e63e9cafc26c0;p=francis%2Fwinuae.git

Skip last D write if D channel was disabled.
---

diff --git a/blitter.cpp b/blitter.cpp
index 716254c3..c7dc8bb2 100644
--- a/blitter.cpp
+++ b/blitter.cpp
@@ -458,12 +458,16 @@ static void blitter_maybe_done_early(int hpos)
 		}
 	}
 	// busy cleared, interrupt generated.
-	// last D write still pending if not linemode
+	// last D write still pending if not linemode and D channel active
 	if (blitline) {
 		blitter_done(hpos);
 	} else {
-		blitter_interrupt(hpos, 0);
-		blt_info.blit_finald = 1 + 2;
+		if (ddat1use) {
+			blt_info.blit_finald = 1 + 2;
+			blitter_interrupt(hpos, 0);
+		} else {
+			blitter_done(hpos);
+		}
 	}
 }