From 19b8dbb1d2e1afaef4c3d9a1e5fcce7f826eba87 Mon Sep 17 00:00:00 2001
From: Cacodemon345 <wahil1976@outlook.com>
Date: Fri, 16 Feb 2024 12:32:58 +0600
Subject: [PATCH] C&T: Clear bit 7 of CRTC register 0x40 on vertical blank
 start, fixes DirectDraw hangs

---
 src/video/vid_chips_69000.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/video/vid_chips_69000.c b/src/video/vid_chips_69000.c
index eb67e16de..88ff698c7 100644
--- a/src/video/vid_chips_69000.c
+++ b/src/video/vid_chips_69000.c
@@ -2202,6 +2202,7 @@ chips_69000_vblank_start(svga_t *svga)
 {
     chips_69000_t  *chips  = (chips_69000_t *) svga->priv;
     chips->mem_regs[1] |= 1 << 14;
+    chips->svga.crtc[0x40] &= ~0x80;
     
     chips_69000_interrupt(chips);
 }