From 28775d2583af3b7bb6eba2b04ce1f3cc1ee846f6 Mon Sep 17 00:00:00 2001
From: OBattler <oubattler@gmail.com>
Date: Sat, 23 Dec 2023 14:11:46 +0100
Subject: [PATCH] Millennium: Do not ignore the interlace bit.

---
 src/video/vid_mga.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/video/vid_mga.c b/src/video/vid_mga.c
index b69a65063..2720bea68 100644
--- a/src/video/vid_mga.c
+++ b/src/video/vid_mga.c
@@ -887,9 +887,10 @@ mystique_recalctimings(svga_t *svga)
     if (mystique->crtcext_regs[2] & CRTCX_R2_LINECOMP10)
         svga->split |= 0x400;
 
-    if (mystique->type == MGA_2064W)
+    if (mystique->type == MGA_2064W) {
         tvp3026_recalctimings(svga->ramdac, svga);
-    else
+        svga->interlace |= !!(mystique->crtcext_regs[0] & 0x80);
+    } else
         svga->interlace = !!(mystique->crtcext_regs[0] & 0x80);
 
     if (mystique->crtcext_regs[3] & CRTCX_R3_MGAMODE) {