From 0ca43d37d4a5d49ba47a5809113eb1030acfbcfa Mon Sep 17 00:00:00 2001
From: SarahW <pcem@pcem-emulator.co.uk>
Date: Wed, 31 Jan 2018 21:20:26 +0000
Subject: [PATCH] Emulated EGA/VGA CRTC register 8 (Preset Row Scan Register).

---
 src/vid_ega.c  | 2 +-
 src/vid_svga.c | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/vid_ega.c b/src/vid_ega.c
index 3805012..8444382 100644
--- a/src/vid_ega.c
+++ b/src/vid_ega.c
@@ -678,7 +678,7 @@ void ega_poll(void *p)
                 if (ega->vc == ega->vtotal)
                 {
                         ega->vc = 0;
-                        ega->sc = 0;
+                        ega->sc = ega->crtc[8] & 0x1f;
                         ega->dispon = 1;
                         ega->displine = 0;
                         ega->scrollcache = ega->attrregs[0x13] & 7;
diff --git a/src/vid_svga.c b/src/vid_svga.c
index ab984a1..c91a92a 100644
--- a/src/vid_svga.c
+++ b/src/vid_svga.c
@@ -684,7 +684,7 @@ void svga_poll(void *p)
 
 //                        printf("Frame over at line %i %i  %i %i\n",displine,vc,svga_vsyncstart,svga_dispend);
                         svga->vc = 0;
-                        svga->sc = 0;
+                        svga->sc = svga->crtc[8] & 0x1f;
                         svga->dispon = 1;
                         svga->displine = (svga->interlace && svga->oddeven) ? 1 : 0;
                         svga->scrollcache = svga->attrregs[0x13] & 7;