Subversion Repositories pavr

-- <File header>

-- Project

--    pAVR (pipelined AVR) is an 8 bit RISC controller, compatible with Atmel's

--    AVR core, but about 3x faster in terms of both clock frequency and MIPS.

--    The increase in speed comes from a relatively deep pipeline. The original

--    AVR core has only two pipeline stages (fetch and execute), while pAVR has

--    6 pipeline stages:

--       1. PM    (read Program Memory)

--       2. INSTR (load Instruction)

--       3. RFRD  (decode Instruction and read Register File)

--       4. OPS   (load Operands)

--       5. ALU   (execute ALU opcode or access Unified Memory)

--       6. RFWR  (write Register File)

-- Version

--    0.32

-- Date

--    2002 August 07

-- Author

--    Doru Cuturela, doruu@yahoo.com

-- License

--    This program is free software; you can redistribute it and/or modify

--    it under the terms of the GNU General Public License as published by

--    the Free Software Foundation; either version 2 of the License, or

--    (at your option) any later version.

--    This program is distributed in the hope that it will be useful,

--    but WITHOUT ANY WARRANTY; without even the implied warranty of

--    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

--    GNU General Public License for more details.

--    You should have received a copy of the GNU General Public License

--    along with this program; if not, write to the Free Software

--    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

-- </File header>

-- <File info>

-- This is a utility for easely setting up Program Memory in the main testing

--    architecture.

-- This is just a testing utility, NOT actually a test.

-- </File info>

-- <File body>

library work;

use work.std_util.all;

library ieee;

use ieee.std_logic_1164.all;

package test_pavr_util is

   -- Function for writing Program Memory

   function pm_setup(pm_addr: natural; pm_val: natural) return std_logic_vector;

end;

package body test_pavr_util is

   -- Function for writing Program Memory

   function pm_setup(pm_addr: natural; pm_val: natural) return std_logic_vector is

      variable rv: std_logic_vector(22+16-1 downto 0);

   begin

      rv := int_to_std_logic_vector(pm_addr, 22) & int_to_std_logic_vector(pm_val, 16);

      return rv;

   end;

end;

-- </File body>