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-- $Id: ibdr_pc11.vhd 350 2010-12-28 16:40:11Z mueller $
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-- $Id: ibdr_pc11.vhd 427 2011-11-19 21:04:11Z mueller $
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--
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--
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-- Copyright 2009-2010 by Walter F.J. Mueller <W.F.J.Mueller@gsi.de>
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-- Copyright 2009-2011 by Walter F.J. Mueller <W.F.J.Mueller@gsi.de>
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--
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--
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-- This program is free software; you may redistribute and/or modify it under
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-- This program is free software; you may redistribute and/or modify it under
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-- the terms of the GNU General Public License as published by the Free
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-- the terms of the GNU General Public License as published by the Free
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-- Software Foundation, either version 2, or at your option any later version.
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-- Software Foundation, either version 2, or at your option any later version.
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--
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--
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-- Description: ibus dev(rem): PC11
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-- Description: ibus dev(rem): PC11
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--
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--
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-- Dependencies: -
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-- Dependencies: -
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-- Test bench: xxdp: zpcae0
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-- Test bench: xxdp: zpcae0
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-- Target Devices: generic
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-- Target Devices: generic
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-- Tool versions: xst 8.1, 8.2, 9.1, 9.2, 12.1; ghdl 0.18-0.29
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-- Tool versions: xst 8.2, 9.1, 9.2, 12.1, 13.1; ghdl 0.18-0.29
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--
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--
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-- Synthesized (xst):
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-- Synthesized (xst):
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-- Date Rev ise Target flop lutl lutm slic t peri
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-- Date Rev ise Target flop lutl lutm slic t peri
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-- 2010-10-17 333 12.1 M53d xc3s1000-4 26 97 0 57 s 6.0
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-- 2010-10-17 333 12.1 M53d xc3s1000-4 26 97 0 57 s 6.0
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-- 2009-06-28 230 10.1.03 K39 xc3s1000-4 25 92 0 54 s 4.9
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-- 2009-06-28 230 10.1.03 K39 xc3s1000-4 25 92 0 54 s 4.9
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--
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--
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-- Revision History:
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-- Revision History:
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-- Date Rev Version Comment
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-- Date Rev Version Comment
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-- 2011-11-18 427 1.2.2 now numeric_std clean
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-- 2010-10-23 335 1.2.1 rename RRI_LAM->RB_LAM;
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-- 2010-10-23 335 1.2.1 rename RRI_LAM->RB_LAM;
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-- 2010-10-17 333 1.2 use ibus V2 interface
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-- 2010-10-17 333 1.2 use ibus V2 interface
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-- 2010-06-11 303 1.1 use IB_MREQ.racc instead of RRI_REQ
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-- 2010-06-11 303 1.1 use IB_MREQ.racc instead of RRI_REQ
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-- 2009-06-28 230 1.0 prdy now inits to '1'; setting err bit in csr now
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-- 2009-06-28 230 1.0 prdy now inits to '1'; setting err bit in csr now
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-- causes interrupt, if enabled; validated with zpcae0
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-- causes interrupt, if enabled; validated with zpcae0
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-- 2009-06-01 221 0.9 Initial version (untested)
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-- 2009-06-01 221 0.9 Initial version (untested)
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------------------------------------------------------------------------------
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------------------------------------------------------------------------------
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library ieee;
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library ieee;
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use ieee.std_logic_1164.all;
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use ieee.std_logic_1164.all;
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use ieee.std_logic_arith.all;
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use ieee.numeric_std.all;
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use work.slvtypes.all;
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use work.slvtypes.all;
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use work.iblib.all;
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use work.iblib.all;
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-- ----------------------------------------------------------------------------
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-- ----------------------------------------------------------------------------
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);
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);
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end ibdr_pc11;
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end ibdr_pc11;
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architecture syn of ibdr_pc11 is
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architecture syn of ibdr_pc11 is
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constant ibaddr_pc11 : slv16 := conv_std_logic_vector(8#177550#,16);
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constant ibaddr_pc11 : slv16 := slv(to_unsigned(8#177550#,16));
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constant ibaddr_rcsr : slv2 := "00"; -- rcsr address offset
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constant ibaddr_rcsr : slv2 := "00"; -- rcsr address offset
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constant ibaddr_rbuf : slv2 := "01"; -- rbuf address offset
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constant ibaddr_rbuf : slv2 := "01"; -- rbuf address offset
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constant ibaddr_pcsr : slv2 := "10"; -- pcsr address offset
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constant ibaddr_pcsr : slv2 := "10"; -- pcsr address offset
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constant ibaddr_pbuf : slv2 := "11"; -- pbuf address offset
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constant ibaddr_pbuf : slv2 := "11"; -- pbuf address offset
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begin
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begin
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proc_regs: process (CLK)
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proc_regs: process (CLK)
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begin
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begin
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if CLK'event and CLK='1' then
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if rising_edge(CLK) then
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if BRESET = '1' then -- BRESET is 1 for system and ibus reset
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if BRESET = '1' then -- BRESET is 1 for system and ibus reset
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R_REGS <= regs_init; --
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R_REGS <= regs_init; --
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if RESET = '0' then -- if RESET=0 we do just an ibus reset
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if RESET = '0' then -- if RESET=0 we do just an ibus reset
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R_REGS.rerr <= N_REGS.rerr; -- don't reset RERR flag
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R_REGS.rerr <= N_REGS.rerr; -- don't reset RERR flag
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R_REGS.perr <= N_REGS.perr; -- don't reset PERR flag
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R_REGS.perr <= N_REGS.perr; -- don't reset PERR flag
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