From 50483b5330e31812fc75f397ae639f6ab03f7978 Mon Sep 17 00:00:00 2001
From: notaz <notasas@gmail.com>
Date: Sat, 26 Jan 2008 15:49:24 +0000
Subject: [PATCH] fixed the arrow problem in VR

git-svn-id: file:///home/notaz/opt/svn/PicoDrive@331 be3aeb3a-fb24-0410-a615-afba39da0efa
---
 Pico/VideoPort.c      | 5 +++--
 Pico/carthw/svp/svp.c | 8 +++++++-
 2 files changed, 10 insertions(+), 3 deletions(-)

diff --git a/Pico/VideoPort.c b/Pico/VideoPort.c
index 59a57b2..c448873 100644
--- a/Pico/VideoPort.c
+++ b/Pico/VideoPort.c
@@ -134,11 +134,12 @@ static void DmaSlow(int len)
       return;
     }
   } else {
-    if (source<Pico.romsize) { // Rom
+    // if we have DmaHook, let it handle ROM because of possible DMA delay
+    if (PicoDmaHook && PicoDmaHook(source, len, &pd, &pdend));
+    else if (source<Pico.romsize) { // Rom
       pd=(u16 *)(Pico.rom+(source&~1));
       pdend=(u16 *)(Pico.rom+Pico.romsize);
     }
-    else if (PicoDmaHook && PicoDmaHook(source, len, &pd, &pdend));
     else {
       elprintf(EL_VDPDMA|EL_ANOMALY, "DmaSlow[%i] %06x->%04x: invalid src", Pico.video.type, source, a);
       return;
diff --git a/Pico/carthw/svp/svp.c b/Pico/carthw/svp/svp.c
index bc7cddb..a196fa1 100644
--- a/Pico/carthw/svp/svp.c
+++ b/Pico/carthw/svp/svp.c
@@ -26,7 +26,13 @@ static void PicoSVPLine(int count)
 
 static int PicoSVPDma(unsigned int source, int len, unsigned short **srcp, unsigned short **limitp)
 {
-	if ((source & 0xfe0000) == 0x300000)
+	if (source < Pico.romsize) { // Rom
+		source -= 2;
+		*srcp = (unsigned short *)(Pico.rom + (source&~1));
+		*limitp = (unsigned short *)(Pico.rom + Pico.romsize);
+		return 1;
+	}
+	else if ((source & 0xfe0000) == 0x300000)
 	{
 		elprintf(EL_VDPDMA|EL_SVP, "SVP DmaSlow from %06x, len=%i", source, len);
 		source &= 0x1fffe;
-- 
2.39.2