Added RAM16

spectrum.v

@@ -12,13 +12,42 @@ rom0 rom(
 	.q(mem_data)
 );
 
+
+reg [15:0] A;                  // Global address bus
+wire [7:0] D;                   // CPU data bus
+wire [7:0] ram_data;            // Internal 16K RAM data
+wire RamWE;
+// assign RamWE = A[15:14]==2'b01 && nIORQ==1 && nRD==1 && nWR==0;
+assign RamWE = 0;
+wire[12:0] vram_address;
+wire[7:0] vram_data;
+
+ram16 ram0(
+	.clock(CLOCK_50),
+	
+	.address_a({12'b0, A[2:0]}),
+	.data_a(D),
+	.q_a(ram_data),
+	.wren_a(0),
+	
+//	.address_b({1'b0, vram_address}),
+	.address_b(A[13:0]),
+	.data_b(8'b0),
+	.q_b(vram_data),
+	.wren_b(0)
+);
+
 reg[21:0] counter;
 always @(posedge CLOCK_50) 
 begin
 	counter <= counter + 1;
 	if (counter == 0)
+	begin
 		address <= address + 1;
+		A <= A + 1;
+	end
 end
-assign LED = mem_data;
+assign LED[3:0] = ram_data[3:0];
+assign LED[7:4] = mem_data[7:4];
 
 endmodule