X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?p=picodrive.git;a=blobdiff_plain;f=pico%2Fcarthw%2Fsvp%2Fsvp.c;h=8861de04d1164b4c2fe88f89f6f7c1b16c3945f3;hp=1bccb3f6c6236720de46cf7b7d3d368a1d3511ef;hb=0c7d1ba332b26f4ac67199e8ecbb826651f8512a;hpb=7feeb8806243f9f0bc6c3d6e957b97d12cecb7df

diff --git a/pico/carthw/svp/svp.c b/pico/carthw/svp/svp.c
index 1bccb3f..8861de0 100644
--- a/pico/carthw/svp/svp.c
+++ b/pico/carthw/svp/svp.c
@@ -91,23 +91,20 @@ static void PicoSVPLine(void)
 }
 
 
-static int PicoSVPDma(unsigned int source, int len, unsigned short **srcp, unsigned short **limitp)
+static int PicoSVPDma(unsigned int source, int len, unsigned short **base, unsigned int *mask)
 {
 	if (source < Pico.romsize) // Rom
 	{
-		source -= 2;
-		*srcp = (unsigned short *)(Pico.rom + (source&~1));
-		*limitp = (unsigned short *)(Pico.rom + Pico.romsize);
-		return 1;
+		*base = (unsigned short *)(Pico.rom + (source & 0xfe0000));
+		*mask = 0x1ffff;
+		return source - 2;
 	}
 	else if ((source & 0xfe0000) == 0x300000)
 	{
 		elprintf(EL_VDPDMA|EL_SVP, "SVP DmaSlow from %06x, len=%i", source, len);
-		source &= 0x1fffe;
-		source -= 2;
-		*srcp = (unsigned short *)(svp->dram + source);
-		*limitp = (unsigned short *)(svp->dram + sizeof(svp->dram));
-		return 1;
+		*base = (unsigned short *)svp->dram;
+		*mask = 0x1ffff;
+		return source - 2;
 	}
 	else
 		elprintf(EL_VDPDMA|EL_SVP|EL_ANOMALY, "SVP FIXME unhandled DmaSlow from %06x, len=%i", source, len);