From 92aa2bb48356299b78178b071d13c80b41a4c29f Mon Sep 17 00:00:00 2001
From: cracyc <cracyc@users.noreply.github.com>
Date: Thu, 7 Sep 2023 14:59:53 -0500
Subject: [PATCH] x68k: guess at scan rate for mode 25

---
 src/mame/sharp/x68k_crtc.cpp | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/mame/sharp/x68k_crtc.cpp b/src/mame/sharp/x68k_crtc.cpp
index 1f8606e9d69..73db692757a 100644
--- a/src/mame/sharp/x68k_crtc.cpp
+++ b/src/mame/sharp/x68k_crtc.cpp
@@ -176,7 +176,7 @@ void x68k_crtc_device::refresh_mode()
 
 //  LOG("CRTC regs - %i %i %i %i  - %i %i %i %i - %i - %i\n", m_reg[0], m_reg[1], m_reg[2], m_reg[3],
 //      m_reg[4], m_reg[5], m_reg[6], m_reg[7], m_reg[8], m_reg[9]);
-	int div;
+	double div;
 	switch (m_reg[20] & 0x1f)
 	{
 		case 0:
@@ -198,6 +198,9 @@ void x68k_crtc_device::refresh_mode()
 		case 0x15:
 			div = 3;
 			break;
+		case 0x19:
+			div = 1.5;
+			break;
 	}
 	attotime refresh = attotime::from_hz((BIT(m_reg[20], 4) ? clock_69m() : clock_39m()) / div) * (scr.max_x * scr.max_y);
 	LOG("screen().configure(%i,%i,[%i,%i,%i,%i],%f)\n", scr.max_x, scr.max_y, visiblescr.min_x, visiblescr.min_y, visiblescr.max_x, visiblescr.max_y, refresh.as_hz());