Removed copy of FPGA source files.

3 files changed, 0 insertions, 1136 deletions

diff --git a/fpga/usrp2/opencores/zpu/core/zpu_config.vhd b/fpga/usrp2/opencores/zpu/core/zpu_config.vhd
deleted file mode 100644
index f7743d602..000000000
--- a/fpga/usrp2/opencores/zpu/core/zpu_config.vhd
+++ /dev/null
@@ -1,20 +0,0 @@
-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;

diff --git a/fpga/usrp2/opencores/zpu/core/zpu_core.vhd b/fpga/usrp2/opencores/zpu/core/zpu_core.vhd
deleted file mode 100644
index 2450f14d3..000000000
--- a/fpga/usrp2/opencores/zpu/core/zpu_core.vhd
+++ /dev/null
@@ -1,948 +0,0 @@
-
--- Company: ZPU4 generic memory interface CPU
--- Engineer: Øyvind Harboe
-
-library IEEE;
-use IEEE.STD_LOGIC_1164.ALL;
-use IEEE.STD_LOGIC_UNSIGNED.ALL;
-use IEEE.STD_LOGIC_arith.ALL;
-
-library work;
-use work.zpu_config.all;
-use work.zpupkg.all;
-
-
-
-
-
-entity zpu_core is
-    Port ( clk : in std_logic;
-	 		  areset : in std_logic;
-	 		  enable : in std_logic; 
-	 		  mem_req : out std_logic;
-	 		  mem_we : out std_logic;
-	 		  mem_ack : in std_logic; 
-	 		  mem_read : in std_logic_vector(wordSize-1 downto 0);
-	 		  mem_write : out std_logic_vector(wordSize-1 downto 0);
-			  out_mem_addr : out std_logic_vector(maxAddrBitIncIO downto 0);
-	 		  mem_writeMask: out std_logic_vector(wordBytes-1 downto 0);
-	 		  interrupt : in std_logic;
-	 		  break : out std_logic;
-	 		  zpu_status : out std_logic_vector(63 downto 0));
-end zpu_core;
-
-architecture behave of zpu_core is
-
-type InsnType is 
-(
-State_AddTop,
-State_Dup,
-State_DupStackB,
-State_Pop,
-State_Popdown,
-State_Add,
-State_Or,
-State_And,
-State_Store,
-State_AddSP,
-State_Shift,
-State_Nop,
-State_Im,
-State_LoadSP,
-State_StoreSP,
-State_Emulate,
-State_Load,
-State_PushPC,
-State_PushSP,
-State_PopPC,
-State_PopPCRel,
-State_Not,
-State_Flip,
-State_PopSP,
-State_Neqbranch,
-State_Eq,
-State_Loadb,
-State_Mult,
-State_Lessthan,
-State_Lessthanorequal,
-State_Ulessthanorequal,
-State_Ulessthan,
-State_Pushspadd,
-State_Call,
-State_Callpcrel,
-State_Sub,
-State_Break,
-State_Storeb,
-State_Interrupt,
-State_InsnFetch
-);
-
-type StateType is 
-(
-State_Idle, -- using first state first on the list out of paranoia 
-State_Load2,
-State_Popped,
-State_LoadSP2,
-State_LoadSP3,
-State_AddSP2,
-State_Fetch,
-State_Execute,
-State_Decode,
-State_Decode2,
-State_Resync,
-
-State_StoreSP2,
-State_Resync2,
-State_Resync3,
-State_Loadb2,
-State_Storeb2,
-State_Mult2,
-State_Mult3,
-State_Mult5,
-State_Mult6,
-State_Mult4,
-State_BinaryOpResult
-); 
-
-
-signal	pc				: std_logic_vector(maxAddrBitIncIO downto 0);
-signal	sp				: std_logic_vector(maxAddrBitIncIO downto minAddrBit);
-signal	incSp			: std_logic_vector(maxAddrBitIncIO downto minAddrBit);
-signal	incIncSp			: std_logic_vector(maxAddrBitIncIO downto minAddrBit);
-signal	decSp			: std_logic_vector(maxAddrBitIncIO downto minAddrBit);
-signal  stackA   		: std_logic_vector(wordSize-1 downto 0);
-signal  binaryOpResult		: std_logic_vector(wordSize-1 downto 0);
-signal  multResult2  		: std_logic_vector(wordSize-1 downto 0);
-signal  multResult3  		: std_logic_vector(wordSize-1 downto 0);
-signal  multResult  		: std_logic_vector(wordSize-1 downto 0);
-signal  multA 		: std_logic_vector(wordSize-1 downto 0);
-signal  multB  		: std_logic_vector(wordSize-1 downto 0);
-signal  stackB  		: std_logic_vector(wordSize-1 downto 0);
-signal	idim_flag			: std_logic;
-signal	busy 				: std_logic;
-signal mem_readEnable : std_logic;
-signal mem_addr : std_logic_vector(maxAddrBitIncIO downto minAddrBit);
-signal mem_delayAddr : std_logic_vector(maxAddrBitIncIO downto minAddrBit);
-signal mem_delayReadEnable : std_logic;
-signal mem_busy : std_logic;
-signal decodeWord : std_logic_vector(wordSize-1 downto 0);
-
-
-signal state : StateType;
-signal insn : InsnType;
-type InsnArray is array(0 to wordBytes-1) of InsnType;
-signal decodedOpcode : InsnArray;
-
-type OpcodeArray is array(0 to wordBytes-1) of std_logic_vector(7 downto 0);
-
-signal opcode : OpcodeArray;
-
-
-
-
-signal	begin_inst			: std_logic;
-signal trace_opcode		: std_logic_vector(7 downto 0);
-signal	trace_pc				: std_logic_vector(maxAddrBitIncIO downto 0);
-signal	trace_sp				: std_logic_vector(maxAddrBitIncIO downto minAddrBit);
-signal	trace_topOfStack				: std_logic_vector(wordSize-1 downto 0);
-signal	trace_topOfStackB				: std_logic_vector(wordSize-1 downto 0);
-
-signal	out_mem_req : std_logic;
-
-signal inInterrupt : std_logic;
-
--- state machine.
-
-begin
-
-	zpu_status(maxAddrBitIncIO downto 0) <= trace_pc;
-	zpu_status(31) <= '1';
-	zpu_status(39 downto 32) <= trace_opcode;
-	zpu_status(40) <= '1' when (state = State_Idle) else '0';
-	zpu_status(62) <= '1';
-
-	traceFileGenerate:
-   if Generate_Trace generate
-	trace_file: trace port map (
-       	clk => clk,
-       	begin_inst => begin_inst,
-       	pc => trace_pc,
-		opcode => trace_opcode,
-		sp => trace_sp,
-		memA => trace_topOfStack,
-		memB => trace_topOfStackB,
-		busy => busy,
-		intsp => (others => 'U')
-        );
-	end generate;
-
-	
-	-- the memory subsystem will tell us one cycle later whether or 
-	-- not it is busy
-	out_mem_addr(maxAddrBitIncIO downto minAddrBit) <= mem_addr;
-	out_mem_addr(minAddrBit-1 downto 0) <= (others => '0');
-	mem_req <= out_mem_req;
-	
-	incSp <= sp + 1;
-	incIncSp <= sp + 2;
-	decSp <= sp - 1;
-	
-	mem_busy <= out_mem_req and not mem_ack; -- '1' when the memory is busy
-
-	opcodeControl:
-	process(clk, areset)
-		variable tOpcode : std_logic_vector(OpCode_Size-1 downto 0);
-		variable spOffset : std_logic_vector(4 downto 0);
-		variable tSpOffset : std_logic_vector(4 downto 0);
-		variable nextPC : std_logic_vector(maxAddrBitIncIO downto 0);
-		variable tNextState : InsnType;
-		variable tDecodedOpcode : InsnArray;
-		variable tMultResult : std_logic_vector(wordSize*2-1 downto 0);
-	begin
-		if areset = '1' then
-			state <= State_Idle;
-			break <= '0';
-			sp <= spStart(maxAddrBitIncIO downto minAddrBit);
-			 
-			pc <= (others => '0');
-			idim_flag <= '0';
-			begin_inst <= '0';
-			mem_we <= '0';
-			multA <= (others => '0');
-			multB <= (others => '0');
-			mem_writeMask <= (others => '1');
-			out_mem_req <= '0';
-			mem_addr <= (others => DontCareValue);
-			mem_write <= (others => DontCareValue);
-			inInterrupt <= '0';
-		elsif (clk'event and clk = '1') then
-			-- we must multiply unconditionally to get pipelined multiplication
-        	tMultResult := multA * multB;
-    		multResult3 <= multResult2;
-    		multResult2 <= multResult;
-    		multResult <= tMultResult(wordSize-1 downto 0);
-    		
-			
-			spOffset(4):=not opcode(conv_integer(pc(byteBits-1 downto 0)))(4);
-			spOffset(3 downto 0):=opcode(conv_integer(pc(byteBits-1 downto 0)))(3 downto 0);
-			nextPC := pc + 1;
-
-			-- prepare trace snapshot
-			trace_opcode <= opcode(conv_integer(pc(byteBits-1 downto 0)));
-			trace_pc <= pc;
-			trace_sp <=	sp;
-			trace_topOfStack <= stackA;
-			trace_topOfStackB <= stackB;
-			begin_inst <= '0';
-
-			-- we terminate the requeset as soon as we get acknowledge
-			if mem_ack = '1' then
-				out_mem_req <= '0';
-				mem_we <= '0';
-			end if;
-			
-			if interrupt='0' then
-				inInterrupt <= '0'; -- no longer in an interrupt
-			end if;
-
-			case state is
-				when State_Idle =>
-					if enable='1' then
-						state <= State_Resync; 
-					end if;
-				-- Initial state of ZPU, fetch top of stack + first instruction 
-				when State_Resync =>
-					if mem_busy='0' then
-						mem_addr <= sp;
-						out_mem_req <= '1';
-						state <= State_Resync2;
-					end if;
-				when State_Resync2 =>
-					if mem_busy='0' then
-						stackA <= mem_read;
-						mem_addr <= incSp;
-						out_mem_req <= '1';
-						state <= State_Resync3;
-					end if;
-				when State_Resync3 =>
-					if mem_busy='0' then
-						stackB <= mem_read;
-						mem_addr <= pc(maxAddrBitIncIO downto minAddrBit);
-						out_mem_req <= '1';
-						state <= State_Decode;
-					end if;
-				when State_Decode =>
-					if mem_busy='0' then
-						decodeWord <= mem_read;
-						state <= State_Decode2;
-					end if;
-				when State_Decode2 =>
-					-- decode 4 instructions in parallel
-					for i in 0 to wordBytes-1 loop
-						tOpcode := decodeWord((wordBytes-1-i+1)*8-1 downto (wordBytes-1-i)*8);
-
-						tSpOffset(4):=not tOpcode(4);
-						tSpOffset(3 downto 0):=tOpcode(3 downto 0);
-
-						opcode(i) <= tOpcode;
-						if (tOpcode(7 downto 7)=OpCode_Im) then
-							tNextState:=State_Im;
-						elsif (tOpcode(7 downto 5)=OpCode_StoreSP) then
-							if tSpOffset = 0 then
-								tNextState := State_Pop;
-							elsif tSpOffset=1 then
-								tNextState := State_PopDown;
-							else
-								tNextState :=State_StoreSP;
-							end if;
-						elsif (tOpcode(7 downto 5)=OpCode_LoadSP) then
-							if tSpOffset = 0 then
-								tNextState :=State_Dup;
-							elsif tSpOffset = 1 then
-								tNextState :=State_DupStackB;
-							else
-								tNextState :=State_LoadSP;
-							end if;
-						elsif (tOpcode(7 downto 5)=OpCode_Emulate) then
-							tNextState :=State_Emulate;
-							if tOpcode(5 downto 0)=OpCode_Neqbranch then
-								tNextState :=State_Neqbranch;
-							elsif tOpcode(5 downto 0)=OpCode_Eq then
-								tNextState :=State_Eq;
-							elsif tOpcode(5 downto 0)=OpCode_Lessthan then
-								tNextState :=State_Lessthan;
-							elsif tOpcode(5 downto 0)=OpCode_Lessthanorequal then
-								--tNextState :=State_Lessthanorequal;
-							elsif tOpcode(5 downto 0)=OpCode_Ulessthan then
-								tNextState :=State_Ulessthan;
-							elsif tOpcode(5 downto 0)=OpCode_Ulessthanorequal then
-								--tNextState :=State_Ulessthanorequal;
-							elsif tOpcode(5 downto 0)=OpCode_Loadb then
-								tNextState :=State_Loadb;
-							elsif tOpcode(5 downto 0)=OpCode_Mult then
-								tNextState :=State_Mult;
-							elsif tOpcode(5 downto 0)=OpCode_Storeb then
-								tNextState :=State_Storeb;
-							elsif tOpcode(5 downto 0)=OpCode_Pushspadd then
-								tNextState :=State_Pushspadd;
-							elsif tOpcode(5 downto 0)=OpCode_Callpcrel then
-								tNextState :=State_Callpcrel;
-							elsif tOpcode(5 downto 0)=OpCode_Call then
-								--tNextState :=State_Call;
-							elsif tOpcode(5 downto 0)=OpCode_Sub then
-								tNextState :=State_Sub;
-							elsif tOpcode(5 downto 0)=OpCode_PopPCRel then
-								--tNextState :=State_PopPCRel;
-							end if;								
-						elsif (tOpcode(7 downto 4)=OpCode_AddSP) then
-							if tSpOffset = 0 then
-								tNextState := State_Shift;
-							elsif tSpOffset = 1 then
-								tNextState := State_AddTop;
-							else
-								tNextState :=State_AddSP;
-							end if;
-						else
-							case tOpcode(3 downto 0) is
-								when OpCode_Nop =>
-									tNextState :=State_Nop;
-								when OpCode_PushSP =>
-									tNextState :=State_PushSP;
-								when OpCode_PopPC =>
-									tNextState :=State_PopPC;
-								when OpCode_Add =>
-									tNextState :=State_Add;
-								when OpCode_Or =>
-									tNextState :=State_Or;
-								when OpCode_And =>
-									tNextState :=State_And;
-								when OpCode_Load =>
-									tNextState :=State_Load;
-								when OpCode_Not =>
-									tNextState :=State_Not;
-								when OpCode_Flip =>
-									tNextState :=State_Flip;
-								when OpCode_Store =>
-									tNextState :=State_Store;
-								when OpCode_PopSP =>
-									tNextState :=State_PopSP;
-								when others =>
-									tNextState := State_Break;
-
-							end case;
-						end if;
-						tDecodedOpcode(i) := tNextState;
-						
-					end loop;
-					
-					insn <= tDecodedOpcode(conv_integer(pc(byteBits-1 downto 0)));
-					
-					-- once we wrap, we need to fetch
-					tDecodedOpcode(0) := State_InsnFetch;
-
-					decodedOpcode <= tDecodedOpcode;
-					state <= State_Execute;
-						
-
-
-					-- Each instruction must:
-					--
-					-- 1. set idim_flag
-					-- 2. increase pc if applicable
-					-- 3. set next state if appliable
-					-- 4. do it's operation
-					 
-				when State_Execute =>
-					insn <= decodedOpcode(conv_integer(nextPC(byteBits-1 downto 0)));
-									
-					case insn is
-						when State_InsnFetch =>
-							state <= State_Fetch;
-						when State_Im =>
-							if mem_busy='0' then
-								begin_inst <= '1';
-								idim_flag <= '1';
-								pc <= pc + 1;
-								
-								if idim_flag='1' then 
-									stackA(wordSize-1 downto 7) <= stackA(wordSize-8 downto 0);
-									stackA(6 downto 0) <= opcode(conv_integer(pc(byteBits-1 downto 0)))(6 downto 0);
-								else
-									out_mem_req <= '1';
-									mem_we <= '1';
-									mem_addr <= incSp;
-									mem_write <= stackB;
-									stackB <= stackA;
-									sp <= decSp;
-									for i in wordSize-1 downto 7 loop
-										stackA(i) <= opcode(conv_integer(pc(byteBits-1 downto 0)))(6);
-									end loop;
-									stackA(6 downto 0) <= opcode(conv_integer(pc(byteBits-1 downto 0)))(6 downto 0);
-								end if;
-							else	
-								insn <= insn;
-							end if;
-						when State_StoreSP =>
-							if mem_busy='0' then
-								begin_inst <= '1';
-								idim_flag <= '0';
-								state <= State_StoreSP2;
-								
-								out_mem_req <= '1';
-								mem_we <= '1';
-								mem_addr <= sp+spOffset;
-								mem_write <= stackA;
-								stackA <= stackB;
-								sp <= incSp;
-							else	
-								insn <= insn;
-							end if;
-
-					
-						when State_LoadSP =>
-							if mem_busy='0' then
-								begin_inst <= '1';
-								idim_flag <= '0';
-								state <= State_LoadSP2;
-		
-								sp <= decSp;
-								out_mem_req <= '1';
-								mem_we <= '1';
-								mem_addr <= incSp;
-								mem_write <= stackB;
-							else	
-								insn <= insn;
-							end if;
-						when State_Emulate =>
-							if mem_busy='0' then
-								begin_inst <= '1';
-								idim_flag <= '0';
-								sp <= decSp;
-								out_mem_req <= '1';
-								mem_we <= '1';
-								mem_addr <= incSp;
-								mem_write <= stackB;
-								stackA <= (others => DontCareValue);
-								stackA(maxAddrBitIncIO downto 0) <= pc + 1;
-								stackB <= stackA;
-								
-								-- The emulate address is:
-								--        98 7654 3210
-								-- 0000 00aa aaa0 0000
-								pc <= (others => '0');
-								pc(9 downto 5) <= opcode(conv_integer(pc(byteBits-1 downto 0)))(4 downto 0);
-								state <= State_Fetch;
-							else	
-								insn <= insn;
-							end if;
-						when State_Callpcrel =>
-							if mem_busy='0' then
-								begin_inst <= '1';
-								idim_flag <= '0';
-								stackA <= (others => DontCareValue);
-								stackA(maxAddrBitIncIO downto 0) <= pc + 1;
-								
-								pc <= pc + stackA(maxAddrBitIncIO downto 0);
-								state <= State_Fetch;
-							else	
-								insn <= insn;
-							end if;
-						when State_Call =>
-							if mem_busy='0' then
-								begin_inst <= '1';
-								idim_flag <= '0';
-								stackA <= (others => DontCareValue);
-								stackA(maxAddrBitIncIO downto 0) <= pc + 1;
-								pc <= stackA(maxAddrBitIncIO downto 0);
-								state <= State_Fetch;
-							else	
-								insn <= insn;
-							end if;
-						when State_AddSP =>
-							if mem_busy='0' then
-								begin_inst <= '1';
-								idim_flag <= '0';
-								state <= State_AddSP2;
-								
-								out_mem_req <= '1';
-								mem_addr <= sp+spOffset;
-							else	
-								insn <= insn;
-							end if;
-						when State_PushSP =>
-							if mem_busy='0' then
-								begin_inst <= '1';
-								idim_flag <= '0';
-								pc <= pc + 1;
-								
-								sp <= decSp;
-								stackA <= (others => '0');
-								stackA(maxAddrBitIncIO downto minAddrBit) <= sp;
-								stackB <= stackA;
-								out_mem_req <= '1';
-								mem_we <= '1';
-								mem_addr <= incSp;
-								mem_write <= stackB;
-							else	
-								insn <= insn;
-							end if;
-						when State_PopPC =>
-							if mem_busy='0' then
-								begin_inst <= '1';
-								idim_flag <= '0';
-								pc <= stackA(maxAddrBitIncIO downto 0);
-								sp <= incSp;
-								
-								out_mem_req <= '1';
-								mem_we <= '1';
-								mem_addr <= incSp;
-								mem_write <= stackB;
-								state <= State_Resync;
-							else	
-								insn <= insn;
-							end if;
-						when State_PopPCRel =>
-							if mem_busy='0' then
-								begin_inst <= '1';
-								idim_flag <= '0';
-								pc <= stackA(maxAddrBitIncIO downto 0) + pc;
-								sp <= incSp;
-								
-								out_mem_req <= '1';
-								mem_we <= '1';
-								mem_addr <= incSp;
-								mem_write <= stackB;
-								state <= State_Resync;
-							else	
-								insn <= insn;
-							end if;
-						when State_Add =>
-							if mem_busy='0' then
-								begin_inst <= '1';
-								idim_flag <= '0';
-								stackA <= stackA + stackB;
-								
-								out_mem_req <= '1';
-								mem_addr <= incIncSp;
-								sp <= incSp;
-								state <= State_Popped;
-							else	
-								insn <= insn;
-							end if;
-						when State_Sub =>
-							begin_inst <= '1';
-							idim_flag <= '0';
-							binaryOpResult <= stackB - stackA;
-							state <= State_BinaryOpResult;
-						when State_Pop =>
-							if mem_busy='0' then
-								begin_inst <= '1';
-								idim_flag <= '0';
-								mem_addr <= incIncSp;
-								out_mem_req <= '1';
-								sp <= incSp;
-								stackA <= stackB;
-								state <= State_Popped;						
-							else	
-								insn <= insn;
-							end if;
-						when State_PopDown =>
-							if mem_busy='0' then
-								-- PopDown leaves top of stack unchanged
-								begin_inst <= '1';
-								idim_flag <= '0';
-								mem_addr <= incIncSp;
-								out_mem_req <= '1';
-								sp <= incSp;
-								state <= State_Popped;						
-							else	
-								insn <= insn;
-							end if;
-						when State_Or =>
-							if mem_busy='0' then
-								begin_inst <= '1';
-								idim_flag <= '0';
-								stackA <= stackA or stackB;
-								out_mem_req <= '1';
-								mem_addr <= incIncSp;
-								sp <= incSp;
-								state <= State_Popped;
-							else	
-								insn <= insn;
-							end if;
-						when State_And =>
-							if mem_busy='0' then
-								begin_inst <= '1';
-								idim_flag <= '0';
-		
-								stackA <= stackA and stackB;
-								out_mem_req <= '1';
-								mem_addr <= incIncSp;
-								sp <= incSp;
-								state <= State_Popped;
-							else	
-								insn <= insn;
-							end if;
-						when State_Eq =>
-							begin_inst <= '1';
-							idim_flag <= '0';
-	
-		            		binaryOpResult <= (others => '0');
-		                	if (stackA=stackB) then
-		                		binaryOpResult(0) <= '1';
-		                	end if;
-							state <= State_BinaryOpResult;
-		                when State_Ulessthan =>
-							begin_inst <= '1';
-							idim_flag <= '0';
-	
-		            		binaryOpResult <= (others => '0');
-		                	if (stackA<stackB) then
-		                		binaryOpResult(0) <= '1';
-		                	end if;
-							state <= State_BinaryOpResult;
-		                when State_Ulessthanorequal =>
-							begin_inst <= '1';
-							idim_flag <= '0';
-	
-		            		binaryOpResult <= (others => '0');
-		                	if (stackA<=stackB) then
-		                		binaryOpResult(0) <= '1';
-		                	end if;
-							state <= State_BinaryOpResult;
-		                when State_Lessthan =>
-							begin_inst <= '1';
-							idim_flag <= '0';
-	
-		            		binaryOpResult <= (others => '0');
-		                	if (signed(stackA)<signed(stackB)) then
-		                		binaryOpResult(0) <= '1';
-		                	end if;
-							state <= State_BinaryOpResult;
-		                when State_Lessthanorequal =>
-							begin_inst <= '1';
-							idim_flag <= '0';
-	
-		            		binaryOpResult <= (others => '0');
-		                	if (signed(stackA)<=signed(stackB)) then
-		                		binaryOpResult(0) <= '1';
-		                	end if;
-							state <= State_BinaryOpResult;
-						when State_Load =>
-							if mem_busy='0' then
-								begin_inst <= '1';
-								idim_flag <= '0';
-								state <= State_Load2;
-								
-								mem_addr <= stackA(maxAddrBitIncIO downto minAddrBit);
-								out_mem_req <= '1';
-							else	
-								insn <= insn;
-							end if;
-
-						when State_Dup =>
-							if mem_busy='0' then
-								begin_inst <= '1';
-								idim_flag <= '0';
-								pc <= pc + 1; 
-								
-								sp <= decSp;
-								stackB <= stackA;
-								mem_write <= stackB;
-								mem_addr <= incSp;
-								out_mem_req <= '1';
-								mem_we <= '1';
-							else	
-								insn <= insn;
-							end if;
-						when State_DupStackB =>
-							if mem_busy='0' then
-								begin_inst <= '1';
-								idim_flag <= '0';
-								pc <= pc + 1; 
-								
-								sp <= decSp;
-								stackA <= stackB;
-								stackB <= stackA;
-								mem_write <= stackB;
-								mem_addr <= incSp;
-								out_mem_req <= '1';
-								mem_we <= '1';
-							else	
-								insn <= insn;
-							end if;
-						when State_Store =>
-							if mem_busy='0' then
-								begin_inst <= '1';
-								idim_flag <= '0';
-								pc <= pc + 1;
-								mem_addr <= stackA(maxAddrBitIncIO downto minAddrBit);
-								mem_write <= stackB;
-								out_mem_req <= '1';
-								mem_we <= '1';
-								sp <= incIncSp;
-								state <= State_Resync;
-							else	
-								insn <= insn;
-							end if;
-						when State_PopSP =>
-							if mem_busy='0' then
-								begin_inst <= '1';
-								idim_flag <= '0';
-								pc <= pc + 1;
-								
-								mem_write <= stackB;
-								mem_addr <= incSp;
-								out_mem_req <= '1';
-								mem_we <= '1';
-								sp <= stackA(maxAddrBitIncIO downto minAddrBit);
-								state <= State_Resync;
-							else	
-								insn <= insn;
-							end if;
-						when State_Nop =>	
-							begin_inst <= '1';
-							idim_flag <= '0';
-							pc <= pc + 1;
-						when State_Not =>
-							begin_inst <= '1';
-							idim_flag <= '0';
-							pc <= pc + 1; 
-							
-							stackA <= not stackA;
-						when State_Flip =>
-							begin_inst <= '1';
-							idim_flag <= '0';
-							pc <= pc + 1; 
-							
-							for i in 0 to wordSize-1 loop
-								stackA(i) <= stackA(wordSize-1-i);
-				  			end loop;
-						when State_AddTop =>
-							begin_inst <= '1';
-							idim_flag <= '0';
-							pc <= pc + 1; 
-							
-							stackA <= stackA + stackB;
-						when State_Shift =>
-							begin_inst <= '1';
-							idim_flag <= '0';
-							pc <= pc + 1; 
-							
-							stackA(wordSize-1 downto 1) <= stackA(wordSize-2 downto 0);
-							stackA(0) <= '0';
-						when State_Pushspadd =>
-							begin_inst <= '1';
-							idim_flag <= '0';
-							pc <= pc + 1; 
-							
-							stackA <= (others => '0');
-							stackA(maxAddrBitIncIO downto minAddrBit) <= stackA(maxAddrBitIncIO-minAddrBit downto 0)+sp;
-						when State_Neqbranch =>
-							-- branches are almost always taken as they form loops
-							begin_inst <= '1';
-							idim_flag <= '0';
-							sp <= incIncSp;
-		                	if (stackB/=0) then
-		                		pc <= stackA(maxAddrBitIncIO downto 0) + pc;
-		                	else
-		                		pc <= pc + 1;
-		                	end if;		
-		                	-- need to fetch stack again.				
-							state <= State_Resync;
-		                when State_Mult =>
-							begin_inst <= '1';
-							idim_flag <= '0';
-		
-							multA <= stackA;
-							multB <= stackB;
-							state <= State_Mult2;
-						when State_Break =>
-							report "Break instruction encountered" severity failure;
-							break <= '1';
-
-						when State_Loadb =>
-							if mem_busy='0' then
-								begin_inst <= '1';
-								idim_flag <= '0';
-								state <= State_Loadb2;
-								
-								mem_addr <= stackA(maxAddrBitIncIO downto minAddrBit);
-								out_mem_req <= '1';
-							else	
-								insn <= insn;
-							end if;
-						when State_Storeb =>
-							if mem_busy='0' then
-								begin_inst <= '1';
-								idim_flag <= '0';
-								state <= State_Storeb2;
-								
-								mem_addr <= stackA(maxAddrBitIncIO downto minAddrBit);
-								out_mem_req <= '1';
-							else	
-								insn <= insn;
-							end if;
-				
-						when others =>
---							sp <= (others => DontCareValue);
-							report "Illegal instruction" severity failure;
-							break <= '1';
-					end case;
-
-
-				when State_StoreSP2 =>
-					if mem_busy='0' then
-						mem_addr <= incSp;
-						out_mem_req <= '1';
-						state <= State_Popped;
-					end if;
-				when State_LoadSP2 =>
-					if mem_busy='0' then
-						state <= State_LoadSP3;
-						out_mem_req <= '1';
-						mem_addr <= sp+spOffset+1;
-					end if;
-				when State_LoadSP3 =>
-					if mem_busy='0' then
-						pc <= pc + 1;
-						state <= State_Execute;
-						stackB <= stackA;
-						stackA <= mem_read;
-					end if;
-				when State_AddSP2 =>
-					if mem_busy='0' then
-						pc <= pc + 1;
-						state <= State_Execute;
-						stackA <= stackA + mem_read;
-					end if;
-				when State_Load2 =>
-					if mem_busy='0' then
-						stackA <= mem_read;
-						pc <= pc + 1;
-						state <= State_Execute;
-					end if;
-				when State_Loadb2 =>
-					if mem_busy='0' then
-						stackA <= (others => '0');
-						stackA(7 downto 0) <= mem_read(((wordBytes-1-conv_integer(stackA(byteBits-1 downto 0)))*8+7) downto (wordBytes-1-conv_integer(stackA(byteBits-1 downto 0)))*8);
-						pc <= pc + 1;
-						state <= State_Execute;
-					end if;
-				when State_Storeb2 =>
-					if mem_busy='0' then
-						mem_addr <= stackA(maxAddrBitIncIO downto minAddrBit);
-						mem_write <= mem_read;
-						mem_write(((wordBytes-1-conv_integer(stackA(byteBits-1 downto 0)))*8+7) downto (wordBytes-1-conv_integer(stackA(byteBits-1 downto 0)))*8) <= stackB(7 downto 0) ;
-						out_mem_req <= '1';
-						mem_we <= '1';
-						pc <= pc + 1;
-						sp <= incIncSp;
-						state <= State_Resync;
-					end if;
-				when State_Fetch =>
-					if mem_busy='0' then
-						if interrupt='1' and inInterrupt='0' and idim_flag='0' then
-							-- We got an interrupt
-							inInterrupt <= '1';
-							
-							sp <= decSp;
-							out_mem_req <= '1';
-							mem_we <= '1';
-							mem_addr <= incSp;
-							mem_write <= stackB;
-							stackA <= (others => DontCareValue);
-							stackA(maxAddrBitIncIO downto 0) <= pc;
-							stackB <= stackA;
-							
-							pc <= conv_std_logic_vector(32, maxAddrBitIncIo+1); -- interrupt address
-							
-			  				report "ZPU jumped to interrupt!" severity note;
-						else
-							mem_addr <= pc(maxAddrBitIncIO downto minAddrBit);
-							out_mem_req <= '1';
-							state <= State_Decode;
-						end if;
-					end if;
-                when State_Mult2 =>
-					state <= State_Mult3;
-                when State_Mult3 =>
-					state <= State_Mult4;
-                when State_Mult4 =>
-					state <= State_Mult5;
-                when State_Mult5 =>
-            		stackA <= multResult3;
-                	state <= State_Mult6;
-                when State_Mult6 =>
-					if mem_busy='0' then
-						out_mem_req <= '1';
-						mem_addr <= incIncSp;
-						sp <= incSp;
-						state <= State_Popped;
-					end if;
-				when State_BinaryOpResult =>
-					if mem_busy='0' then
-						-- NB!!!! we know that the memory isn't busy at this point!!!!
-						out_mem_req <= '1';
-						mem_addr <= incIncSp;
-						sp <= incSp;
-						stackA <= binaryOpResult;
-						state <= State_Popped;
-					end if;
-				when State_Popped =>
-					if mem_busy='0' then
-						pc <= pc + 1;
-						stackB <= mem_read;
-						state <= State_Execute;
-					end if;
-				when others =>	
---					sp <= (others => DontCareValue);
-					report "Illegal state" severity failure;
-					break <= '1';
-			end case;
-		end if;
-	end process;
-
-
-
-end behave;
diff --git a/fpga/usrp2/opencores/zpu/core/zpupkg.vhd b/fpga/usrp2/opencores/zpu/core/zpupkg.vhd
deleted file mode 100644
index 1a01563b8..000000000
--- a/fpga/usrp2/opencores/zpu/core/zpupkg.vhd
+++ /dev/null
@@ -1,168 +0,0 @@
-library IEEE;

-use IEEE.STD_LOGIC_1164.all;

-use IEEE.STD_LOGIC_ARITH.all;

-

-library work;

-use work.zpu_config.all;

-

-package zpupkg is

-

-	-- This bit is set for read/writes to IO

-	-- FIX!!! eventually this should be set to wordSize-1 so as to

-	-- to make the address of IO independent of amount of memory

-	-- reserved for CPU. Requires trivial tweaks in toolchain/runtime

-	-- libraries.

-	

-	constant byteBits			: integer := wordPower-3; -- # of bits in a word that addresses bytes

-	constant maxAddrBit			: integer := maxAddrBitIncIO-1;

-	constant ioBit				: integer := maxAddrBit+1;

-	constant wordSize			: integer := 2**wordPower;

-	constant wordBytes			: integer := wordSize/8;

-	constant minAddrBit			: integer := byteBits;

-	-- configurable internal stack size. Probably going to be 16 after toolchain is done

-	constant	stack_bits		: integer := 5; 

-	constant	stack_size		: integer := 2**stack_bits; 

-

-	component dualport_ram is

-	port (clk : in std_logic;

-		memAWriteEnable : in std_logic;

-		memAAddr : in std_logic_vector(maxAddrBit downto minAddrBit);

-		memAWrite : in std_logic_vector(wordSize-1 downto 0);

-		memARead : out std_logic_vector(wordSize-1 downto 0);

-		memBWriteEnable : in std_logic;

-		memBAddr : in std_logic_vector(maxAddrBit downto minAddrBit);

-		memBWrite : in std_logic_vector(wordSize-1 downto 0);

-		memBRead : out std_logic_vector(wordSize-1 downto 0));

-	end component;

-

-	component dram is

-		port (clk : in std_logic;

-			areset : in std_logic;

-			mem_writeEnable : in std_logic;

-			mem_readEnable : in std_logic;

-			mem_addr : in std_logic_vector(maxAddrBit downto 0);

-			mem_write : in std_logic_vector(wordSize-1 downto 0);

-			mem_read : out std_logic_vector(wordSize-1 downto 0);

-			mem_busy : out std_logic;

-			mem_writeMask : in std_logic_vector(wordBytes-1 downto 0));

-	end component;

-

-

-	component trace is

-	  port(

-	       	clk         : in std_logic;

-	       	begin_inst  : in std_logic;

-	       	pc          : in std_logic_vector(maxAddrBitIncIO downto 0);

-			opcode		: in std_logic_vector(7 downto 0);

-			sp			: in std_logic_vector(maxAddrBitIncIO downto minAddrBit);

-			memA		: in std_logic_vector(wordSize-1 downto 0);

-			memB		: in std_logic_vector(wordSize-1 downto 0);

-			busy         : in std_logic;

-			intSp		: in std_logic_vector(stack_bits-1 downto 0)

-			);

-	end component;

-

-	component zpu_core is

-    port ( clk : in std_logic;

-	 		  areset : in std_logic;

-	 		  enable : in std_logic; 

-	 		  mem_req : out std_logic;

-	 		  mem_we : out std_logic;

-	 		  mem_ack : in std_logic; 

-	 		  mem_read : in std_logic_vector(wordSize-1 downto 0);

-	 		  mem_write : out std_logic_vector(wordSize-1 downto 0);

-			  out_mem_addr : out std_logic_vector(maxAddrBitIncIO downto 0);

-	 		  mem_writeMask: out std_logic_vector(wordBytes-1 downto 0);

-	 		  interrupt : in std_logic;

-	 		  break : out std_logic;

-	 		  zpu_status : out std_logic_vector(63 downto 0));

-	end component;

-

-

-	

-	component timer is

-  	port(

-       	clk             : in std_logic;

-		areset			: in std_logic;

-		sample			: in std_logic;

-		reset			: in std_logic;

-		counter			: out std_logic_vector(63 downto 0));

-	end component;

-

-	component  zpuio is

-		port (	areset			: in std_logic;

-				cpu_clk			: in std_logic;

-				clk_status		: in std_logic_vector(2 downto 0);

-				cpu_din			: in std_logic_vector(15 downto 0);

-				cpu_a			: in std_logic_vector(20 downto 0);

-				cpu_we			: in std_logic_vector(1 downto 0);

-				cpu_re			: in std_logic;

-				cpu_dout		: inout std_logic_vector(15 downto 0));

-	end component;

-

-

-

-	

-	-- opcode decode constants

-	constant	OpCode_Im		: std_logic_vector(7 downto 7) := "1";

-	constant	OpCode_StoreSP	: std_logic_vector(7 downto 5) := "010";

-	constant	OpCode_LoadSP	: std_logic_vector(7 downto 5) := "011";

-	constant	OpCode_Emulate	: std_logic_vector(7 downto 5) := "001";

-	constant	OpCode_AddSP	: std_logic_vector(7 downto 4) := "0001";

-	constant	OpCode_Short	: std_logic_vector(7 downto 4) := "0000";

-	

-	constant	OpCode_Break	: std_logic_vector(3 downto 0) := "0000";

-	constant	OpCode_Shiftleft: std_logic_vector(3 downto 0) := "0001";

-	constant	OpCode_PushSP	: std_logic_vector(3 downto 0) := "0010";

-	constant	OpCode_PushInt	: std_logic_vector(3 downto 0) := "0011";

-	

-	constant	OpCode_PopPC	: std_logic_vector(3 downto 0) := "0100";

-	constant	OpCode_Add		: std_logic_vector(3 downto 0) := "0101";

-	constant	OpCode_And		: std_logic_vector(3 downto 0) := "0110";

-	constant	OpCode_Or		: std_logic_vector(3 downto 0) := "0111";

-	

-	constant	OpCode_Load		: std_logic_vector(3 downto 0) := "1000";

-	constant	OpCode_Not		: std_logic_vector(3 downto 0) := "1001";

-	constant	OpCode_Flip		: std_logic_vector(3 downto 0) := "1010";

-	constant	OpCode_Nop		: std_logic_vector(3 downto 0) := "1011";

-	

-	constant	OpCode_Store	: std_logic_vector(3 downto 0) := "1100";

-	constant	OpCode_PopSP	: std_logic_vector(3 downto 0) := "1101";

-	constant	OpCode_Compare	: std_logic_vector(3 downto 0) := "1110";

-	constant	OpCode_PopInt	: std_logic_vector(3 downto 0) := "1111";

-	

-	constant	OpCode_Lessthan				: std_logic_vector(5 downto 0) := conv_std_logic_vector(36, 6);

-	constant	OpCode_Lessthanorequal		: std_logic_vector(5 downto 0) := conv_std_logic_vector(37, 6);

-	constant	OpCode_Ulessthan			: std_logic_vector(5 downto 0) := conv_std_logic_vector(38, 6);

-	constant	OpCode_Ulessthanorequal		: std_logic_vector(5 downto 0) := conv_std_logic_vector(39, 6);

-

-	constant	OpCode_Swap					: std_logic_vector(5 downto 0) := conv_std_logic_vector(40, 6);

-	constant	OpCode_Mult					: std_logic_vector(5 downto 0) := conv_std_logic_vector(41, 6);

-	

-	constant	OpCode_Lshiftright			: std_logic_vector(5 downto 0) := conv_std_logic_vector(42, 6);

-	constant	OpCode_Ashiftleft			: std_logic_vector(5 downto 0) := conv_std_logic_vector(43, 6);

-	constant	OpCode_Ashiftright			: std_logic_vector(5 downto 0) := conv_std_logic_vector(44, 6);

-	constant	OpCode_Call					: std_logic_vector(5 downto 0) := conv_std_logic_vector(45, 6);

-

-	constant	OpCode_Eq					: std_logic_vector(5 downto 0) := conv_std_logic_vector(46, 6);

-	constant	OpCode_Neq					: std_logic_vector(5 downto 0) := conv_std_logic_vector(47, 6);

-

-	constant	OpCode_Sub					: std_logic_vector(5 downto 0) := conv_std_logic_vector(49, 6);

-	constant	OpCode_Loadb				: std_logic_vector(5 downto 0) := conv_std_logic_vector(51, 6);

-	constant	OpCode_Storeb				: std_logic_vector(5 downto 0) := conv_std_logic_vector(52, 6);

-

-	constant	OpCode_Eqbranch				: std_logic_vector(5 downto 0) := conv_std_logic_vector(55, 6);

-	constant	OpCode_Neqbranch			: std_logic_vector(5 downto 0) := conv_std_logic_vector(56, 6);

-	constant	OpCode_Poppcrel				: std_logic_vector(5 downto 0) := conv_std_logic_vector(57, 6);

-

-	constant	OpCode_Pushspadd			: std_logic_vector(5 downto 0) := conv_std_logic_vector(61, 6);

-	constant	OpCode_Mult16x16			: std_logic_vector(5 downto 0) := conv_std_logic_vector(62, 6);

-	constant	OpCode_Callpcrel			: std_logic_vector(5 downto 0) := conv_std_logic_vector(63, 6);

-	

-

-

-	constant OpCode_Size		: integer := 8;

-

-

-		

-end zpupkg;