From b834365f30b3c965d7d84edaa1b568e458d320b3 Mon Sep 17 00:00:00 2001
From: OBattler <oubattler@gmail.com>
Date: Sun, 5 Sep 2021 19:03:32 +0200
Subject: [PATCH] Fixed CRTC register readout on the Hercules, fixes #1656.

---
 src/video/vid_hercules.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/src/video/vid_hercules.c b/src/video/vid_hercules.c
index 5ff73287a..54d0a891a 100644
--- a/src/video/vid_hercules.c
+++ b/src/video/vid_hercules.c
@@ -203,11 +203,12 @@ hercules_in(uint16_t addr, void *priv)
 	case 0x03b3:
 	case 0x03b5:
 	case 0x03b7:
-		ret = dev->crtc[dev->crtcreg];
-		if (dev->crtcreg == 12)
+		if (dev->crtcreg == 0x0c)
 			ret = (dev->ma >> 8) & 0x3f;
-		else
+		else if (dev->crtcreg == 0x0d)
 			ret = dev->ma & 0xff;
+		else
+			ret = dev->crtc[dev->crtcreg];
 		break;
 
 	case 0x03ba: