Pushing the bulk of UHD-3.7.0 code.

Original-commit: ff1546f8137f7f92bb250f685561b0c34cc0e053

lib/zpu/core/zpu_config.vhd

@@ -0,0 +1,20 @@
+library ieee;
+use ieee.std_logic_1164.all;
+use ieee.std_logic_unsigned.all;
+
+package zpu_config is
+	-- generate trace output or not.
+	constant	Generate_Trace		: boolean := false;
+	constant 	wordPower			: integer := 5;
+	-- during simulation, set this to '0' to get matching trace.txt 
+	constant	DontCareValue		: std_logic := '0';
+	-- Clock frequency in MHz.
+	constant	ZPU_Frequency		: std_logic_vector(7 downto 0) := x"40";
+	-- This is the msb address bit. bytes=2^(maxAddrBitIncIO+1)
+	constant 	maxAddrBitIncIO		: integer := 15;
+	
+	-- start byte address of stack. 
+	-- point to top of RAM - 2*words
+	constant 	spStart				: std_logic_vector(maxAddrBitIncIO downto 0) := x"3ff8";
+	
+end zpu_config;