compatibility fix on high DMA.

README.txt

@@ -230,7 +230,14 @@ Currently the PSP's still resident in low memory, but that will be optimized lat
 Q3: Some games aren't running with SBEMU, or SBEMU freezes on startup, or I ain't getting any sounds, where to report the issue?
 
 Please create issues here: https://github.com/crazii/SBEMU/issues
-It helps if you post additional details, i.e. the spec of your PC; what's the output of `SBEMU /SCL`; what's your command line options.
+It helps if you post additional details:
+    the spec of your PC
+    the DOS edition & version
+    the build/release of SBEMU, if you don't know, you can check the startup message (the first line) of running SBEMU
+    what's the output of `SBEMU /SCL`
+    what's your command line options
+    the Game title and edition & version
+
 Because SBEMU is a hobby project, there's no guarantee that the problem will be fixed immediately or very soon enough,
 and the contributors might not response in time, please be patient.
 

main.c

@@ -730,9 +730,7 @@ int main(int argc, char* argv[])
         MAIN_CPrintf(RED, "Error: Invalid Sample rate.\n");
         return 1;
     }
-    if(MAIN_Options[OPT_TYPE].value != 6)
-        MAIN_Options[OPT_HDMA].value = MAIN_Options[OPT_DMA].value; //16 bit transfer through 8 bit dma
-    else if(MAIN_Options[OPT_HDMA].value < 5 && MAIN_Options[OPT_HDMA].value != MAIN_Options[OPT_DMA].value) //16 bit transfer through 8 bit dma
+    if(MAIN_Options[OPT_HDMA].value < 5 && MAIN_Options[OPT_HDMA].value != MAIN_Options[OPT_DMA].value) //16 bit transfer through 8 bit dma
     {
         printf("Warning: HDMA using 8 bit channel: H=%d, "
         "using 5/6/7 is recommended.\n"
@@ -907,8 +905,7 @@ int main(int argc, char* argv[])
         MAIN_Options[OPT_FIX_TC].value,
         &MAIN_SbemuExtFun);
     VDMA_Virtualize(MAIN_Options[OPT_DMA].value, TRUE);
-    if(MAIN_Options[OPT_TYPE].value == 6)
-        VDMA_Virtualize(MAIN_Options[OPT_HDMA].value, TRUE);
+    VDMA_Virtualize(MAIN_Options[OPT_HDMA].value, TRUE);
     for(int i = 0; i < countof(MAIN_SB_IODT); ++i)
         MAIN_SB_IODT[i].port += MAIN_Options[OPT_ADDR].value;
     QEMM_IODT* SB_Iodt = MAIN_Options[OPT_OPL].value ? MAIN_SB_IODT : MAIN_SB_IODT+4;
@@ -1211,7 +1208,7 @@ static void MAIN_Interrupt()
         return;
 
     BOOL digital = SBEMU_HasStarted();
-    int dma = (SBEMU_GetBits() <= 8 || MAIN_Options[OPT_TYPE].value < 6) ? SBEMU_GetDMA() : SBEMU_GetHDMA();
+    int dma = (SBEMU_GetBits() <= 8 /*|| MAIN_Options[OPT_TYPE].value < 6*/) ? SBEMU_GetDMA() : SBEMU_GetHDMA();
     int32_t DMA_Count = VDMA_GetCounter(dma); //count in bytes
     if(!digital) MAIN_LastSBRate = 0;
     if(digital)//&& DMA_Count != 0x10000) //-1(0xFFFF)+1=0

sbemu/vdma.c

@@ -103,7 +103,7 @@ uint8_t VDMA_Read(uint16_t port)
     _LOG("VDMA read: %x\n", port);
     int channel = -1;
     if(port <= VDMA_REG_CH3_COUNTER) channel = (port>>1);
-    else if(port >= VDMA_REG_CH4_ADDR && port <= VDMA_REG_CH7_COUNTER) channel = ((port-VDMA_REG_CH4_ADDR)>>2)+4;
+    else if(port >= VDMA_REG_CH4_ADDR && port <= VDMA_REG_CH7_COUNTER) channel = ((port-VDMA_REG_CH4_ADDR)/4)+4;
     else if(port>=0x80 && port <= 0x8F) channel = VDMA_PortChannelMap[port-0x80];
 
     if(VMDA_IS_CHANNEL_VIRTUALIZED(channel))
@@ -167,7 +167,10 @@ uint8_t VDMA_Read(uint16_t port)
 void VDMA_Virtualize(int channel, int enable)
 {
     if(channel >= 0 && channel <= 7)
+    {
+        _LOG("VDMA channel: %d %s\n", channel, enable ? "enabled" : "disabled");
         VDMA_VMask[channel] = enable ? 1: 0;
+    }
 }
 
 uint32_t VDMA_GetAddress(int channel)