X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=pico%2Fvideoport.c;h=9def819deb4a4b86bf7e251db61e403cf80a4afa;hb=fda2f31020bf0d6cf7b5dd70ec01cf390b7e1483;hp=355489e9f069c786b6596404aa09e504b03efa9b;hpb=93f9619ed819dee07948416c98ca2f1c70a22666;p=picodrive.git

diff --git a/pico/videoport.c b/pico/videoport.c
index 355489e..9def819 100644
--- a/pico/videoport.c
+++ b/pico/videoport.c
@@ -100,7 +100,7 @@ static void DmaSlow(int len, unsigned int source)
     Pico.video.type, source, a, len, inc, (Pico.video.status&8)||!(Pico.video.reg[1]&0x40),
     SekCyclesDone(), SekPc);
 
-  Pico.m.dma_xfers += len;
+  Pico.m.dma_xfers = len;
   if (Pico.m.dma_xfers < len) // lame 16bit var
     Pico.m.dma_xfers = ~0;
   SekCyclesBurnRun(CheckDMA());
@@ -225,10 +225,10 @@ static void DmaCopy(int len)
   int source;
   elprintf(EL_VDPDMA, "DmaCopy len %i [%u]", len, SekCyclesDone());
 
-  Pico.m.dma_xfers += len;
+  Pico.m.dma_xfers = len;
   if (Pico.m.dma_xfers < len)
     Pico.m.dma_xfers = ~0;
-  Pico.video.status |= 2; // dma busy
+  Pico.video.status |= SR_DMA;
 
   source =Pico.video.reg[0x15];
   source|=Pico.video.reg[0x16]<<8;
@@ -256,10 +256,10 @@ static NOINLINE void DmaFill(int data)
   len = GetDmaLength();
   elprintf(EL_VDPDMA, "DmaFill len %i inc %i [%u]", len, inc, SekCyclesDone());
 
-  Pico.m.dma_xfers += len;
+  Pico.m.dma_xfers = len;
   if (Pico.m.dma_xfers < len) // lame 16bit var
     Pico.m.dma_xfers = ~0;
-  Pico.video.status |= 2; // dma busy
+  Pico.video.status |= SR_DMA;
 
   switch (Pico.video.type)
   {
@@ -306,6 +306,10 @@ static NOINLINE void CommandDma(void)
 
   if ((pvid->reg[1]&0x10)==0) return; // DMA not enabled
 
+  if (Pico.m.dma_xfers)
+    elprintf(EL_VDPDMA|EL_ANOMALY, "Dma overlap, left=%d @ %06x",
+             Pico.m.dma_xfers, SekPc);
+
   len = GetDmaLength();
   source =Pico.video.reg[0x15];
   source|=Pico.video.reg[0x16] << 8;