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-- $Id: pdp11_mmu_sadr.vhd 351 2010-12-30 21:50:54Z mueller $
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-- $Id: pdp11_mmu_sadr.vhd 427 2011-11-19 21:04:11Z mueller $
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--
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--
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-- Copyright 2006-2010 by Walter F.J. Mueller <W.F.J.Mueller@gsi.de>
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-- Copyright 2006-2011 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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--
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--
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-- Dependencies: memlib/ram_1swar_gen
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-- Dependencies: memlib/ram_1swar_gen
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--
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--
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-- Test bench: tb/tb_pdp11_core (implicit)
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-- Test bench: tb/tb_pdp11_core (implicit)
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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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-- 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 1.3.3 now numeric_std clean
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-- 2010-12-30 351 1.3.2 BUGFIX: fix sensitivity list of proc_eaddr
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-- 2010-12-30 351 1.3.2 BUGFIX: fix sensitivity list of proc_eaddr
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-- 2010-10-23 335 1.3.1 change proc_eaddr logic, shorten logic path
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-- 2010-10-23 335 1.3.1 change proc_eaddr logic, shorten logic path
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-- 2010-10-17 333 1.3 use ibus V2 interface
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-- 2010-10-17 333 1.3 use ibus V2 interface
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-- 2008-08-22 161 1.2.2 rename ubf_ -> ibf_; use iblib
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-- 2008-08-22 161 1.2.2 rename ubf_ -> ibf_; use iblib
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-- 2008-01-05 110 1.2.1 rename _mmu_regs -> _mmu_sadr
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-- 2008-01-05 110 1.2.1 rename _mmu_regs -> _mmu_sadr
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-- 2007-05-12 26 1.0 Initial version
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-- 2007-05-12 26 1.0 Initial version
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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.memlib.all;
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use work.memlib.all;
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use work.iblib.all;
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use work.iblib.all;
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use work.pdp11.all;
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use work.pdp11.all;
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-- umdr 177600 -> 1 111 111 110 000 000
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-- umdr 177600 -> 1 111 111 110 000 000
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-- umar 177640 -> 1 111 111 110 100 000
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-- umar 177640 -> 1 111 111 110 100 000
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--
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--
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-- mode => (addr(8), not addr(6)) [Note: km "00" sm "01" um "11"]
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-- mode => (addr(8), not addr(6)) [Note: km "00" sm "01" um "11"]
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constant ibaddr_kmdar : slv16 := conv_std_logic_vector(8#172300#,16);
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constant ibaddr_kmdar : slv16 := slv(to_unsigned(8#172300#,16));
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constant ibaddr_smdar : slv16 := conv_std_logic_vector(8#172200#,16);
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constant ibaddr_smdar : slv16 := slv(to_unsigned(8#172200#,16));
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constant ibaddr_umdar : slv16 := conv_std_logic_vector(8#177600#,16);
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constant ibaddr_umdar : slv16 := slv(to_unsigned(8#177600#,16));
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subtype sdr_ibf_slf is integer range 14 downto 8;
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subtype sdr_ibf_slf is integer range 14 downto 8;
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subtype sdr_ibf_aib is integer range 7 downto 6;
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subtype sdr_ibf_aib is integer range 7 downto 6;
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subtype sdr_ibf_acf is integer range 3 downto 0;
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subtype sdr_ibf_acf is integer range 3 downto 0;
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proc_ibsel: process (CLK)
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proc_ibsel: process (CLK)
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variable ibsel_dr : slbit := '0';
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variable ibsel_dr : slbit := '0';
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variable ibsel_ar : slbit := '0';
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variable ibsel_ar : slbit := '0';
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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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ibsel_dr := '0';
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ibsel_dr := '0';
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ibsel_ar := '0';
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ibsel_ar := '0';
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if IB_MREQ.aval = '1' then
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if IB_MREQ.aval = '1' then
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if IB_MREQ.addr(12 downto 6)=ibaddr_kmdar(12 downto 6) or
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if IB_MREQ.addr(12 downto 6)=ibaddr_kmdar(12 downto 6) or
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IB_MREQ.addr(12 downto 6)=ibaddr_smdar(12 downto 6) or
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IB_MREQ.addr(12 downto 6)=ibaddr_smdar(12 downto 6) or
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