[C64] Use the RDY line of the CPU

...to not miss NMI edges. Fixes Turbo Outrun samples.

cores/c64/rtl/cpu_6510.vhd

@@ -28,6 +28,7 @@ entity cpu_6510 is
 		nmi_n   : in  std_logic;
 		nmi_ack : out std_logic;
 		irq_n   : in  std_logic;
+		rdy     : in  std_logic;
 
 		di      : in  unsigned(7 downto 0);
 		do      : out unsigned(7 downto 0);
@@ -60,7 +61,7 @@ begin
 		Res_n   => not reset,
 		Enable  => enable,
 		Clk     => clk,
-		Rdy     => '1',
+		Rdy     => rdy,
 		Abort_n => '1',
 		IRQ_n   => irq_n,
 		NMI_n   => nmi_n,

cores/c64/rtl/fpga64_sid_iec.vhd

@@ -372,10 +372,7 @@ begin
 				enableVic <= '1';
 			when CYCLE_CPUE =>
 				enableVic <= '1';
-				if baLoc = '1'
-				or cpuWe = '1' then
-					enableCpu <= '1';
-				end if;
+				enableCpu <= '1';
 			when CYCLE_CPUF =>
 				enableCia <= '1';
 			when others =>
@@ -616,7 +613,7 @@ div1m: process(clk32)				-- this process devides 32 MHz to 1MHz (for the SID)
 		audio_data => audio_8580,
 		extfilter_en => extfilter_en
 ); 
-	
+
 -- -----------------------------------------------------------------------
 -- CIAs
 -- -----------------------------------------------------------------------
@@ -686,6 +683,7 @@ div1m: process(clk32)				-- this process devides 32 MHz to 1MHz (for the SID)
 			nmi_n => nmiLoc,
 			nmi_ack => nmi_ack,
 			irq_n => irqLoc,
+			rdy => baLoc,
 
 			di => cpuDi,
 			addr => cpuAddr,