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Line 1... |
-------------------------------------------------------------------------------
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-------------------------------------------------------------------------------
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--
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--
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-- The Data Memory control unit.
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-- The Data Memory control unit.
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-- All accesses to the Data Memory are managed here.
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-- All accesses to the Data Memory are managed here.
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--
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--
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-- $Id: dmem_ctrl.vhd,v 1.4 2005-06-11 10:08:43 arniml Exp $
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-- $Id: dmem_ctrl.vhd,v 1.5 2006-06-20 01:07:16 arniml Exp $
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--
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--
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-- Copyright (c) 2004, Arnim Laeuger (arniml@opencores.org)
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-- Copyright (c) 2004, Arnim Laeuger (arniml@opencores.org)
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--
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--
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-- All rights reserved
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-- All rights reserved
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--
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--
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-----------------------------------------------------------------------------
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-----------------------------------------------------------------------------
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-- Process dmem_addr_reg
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-- Process dmem_addr_reg
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--
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--
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-- Purpose:
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-- Purpose:
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-- Implements the Data Memory Address Register.
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-- Implements the Data Memory Address Register.
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-- This register is necessary to hold the address during a write operation
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-- This register is required to hold the address during a write operation
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-- as we cannot hold the address in the input register of the
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-- as we cannot hold the address in the input register of the
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-- synchronous RAM (no clock suppression/gating).
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-- synchronous RAM (no clock suppression/gating).
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--
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--
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-- NOTE: May be obsoleted by clock enable feature of generic RTL RAM.
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--
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dmem_addr_reg: process (res_i, clk_i)
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dmem_addr_reg: process (res_i, clk_i)
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begin
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begin
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if res_i = res_active_c then
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if res_i = res_active_c then
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dmem_addr_q <= (others => '0');
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dmem_addr_q <= (others => '0');
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-------------------------------------------------------------------------------
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-------------------------------------------------------------------------------
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-- File History:
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-- File History:
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--
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--
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-- $Log: not supported by cvs2svn $
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-- $Log: not supported by cvs2svn $
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-- Revision 1.4 2005/06/11 10:08:43 arniml
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|
-- introduce prefix 't48_' for all packages, entities and configurations
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--
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-- Revision 1.3 2004/04/24 23:44:25 arniml
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-- Revision 1.3 2004/04/24 23:44:25 arniml
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-- move from std_logic_arith to numeric_std
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-- move from std_logic_arith to numeric_std
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--
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--
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-- Revision 1.2 2004/04/18 18:58:29 arniml
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-- Revision 1.2 2004/04/18 18:58:29 arniml
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-- clean up sensitivity list
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-- clean up sensitivity list
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