diff --git a/src/dma.cpp b/src/dma.cpp
index 19c8626..2a55bc9 100644
--- a/src/dma.cpp
+++ b/src/dma.cpp
@@ -36,15 +36,20 @@ dma::dma(int Channel,uint32_t CBSize,uint32_t UserMemSize) // Fixme! Need to che
 	
 	//Channel DMA is now hardcoded according to Raspi Model (DMA 7 for Pi4, DMA 14 for others)
 	uint32_t BCM2708_PERI_BASE =bcm_host_get_peripheral_address();
+	
+	channel=Channel;
 	if(BCM2708_PERI_BASE==0xFE000000)
 	{
 		channel= 7; // Pi4
+		dbg_printf(1,"dma PI4 using channel %d\n",channel);
 	}
 	else
 	{
 		channel = 14; // Other Pi
+		dbg_printf(1,"dma (NOT a PI4)  using channel %d\n",channel);
 	}
-	dbg_printf(1,"Channel %d CBSize %u UsermemSize %u\n",Channel,CBSize,UserMemSize);
+	
+	dbg_printf(1,"channel %d CBSize %u UsermemSize %u\n",channel,CBSize,UserMemSize);
 	
     mbox.handle = mbox_open();
 	if (mbox.handle < 0)
diff --git a/src/gpio.cpp b/src/gpio.cpp
index 827aa47..187b400 100644
--- a/src/gpio.cpp
+++ b/src/gpio.cpp
@@ -177,7 +177,8 @@ uint64_t clkgpio::GetPllFrequency(int PllNo)
 		Freq =( XOSC_FREQUENCY * ((uint64_t)gpioreg[PLLH_CTRL] & 0x3ff) + XOSC_FREQUENCY * (uint64_t)gpioreg[PLLH_FRAC] / (1 << 20))/(2*(gpioreg[PLLH_CTRL] >> 12)&0x7) ;
 		break;
 	}
-	//if(pi_is_2711) Freq*=2LL;
+	if(!pi_is_2711) // FixMe : Surely a register which say it is a 2x
+		Freq*=2LL;
 	Freq=Freq*(1.0-clk_ppm*1e-6);
 	dbg_printf(1, "Pi4=%d Xosc = %llu Freq PLL no %d= %llu\n",pi_is_2711,XOSC_FREQUENCY,PllNo, Freq);