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--
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--
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--
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-- This file is a part of JOP, the Java Optimized Processor
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--
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-- Copyright (C) 2001-2008, Martin Schoeberl (martin@jopdesign.com)
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--
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-- This program is free software: you can redistribute it and/or modify
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-- it under the terms of the GNU General Public License as published by
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-- the Free Software Foundation, either version 3 of the License, or
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-- (at your option) any later version.
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--
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-- This program is distributed in the hope that it will be useful,
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-- but WITHOUT ANY WARRANTY; without even the implied warranty of
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-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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-- GNU General Public License for more details.
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--
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-- You should have received a copy of the GNU General Public License
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-- along with this program. If not, see <http://www.gnu.org/licenses/>.
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--
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--
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-- sc2ahbsl.vhd
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-- sc2ahbsl.vhd
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--
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--
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-- SimpCon to AMBA bridge
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-- SimpCon to AMBA bridge
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--
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--
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-- Author: Martin Schoeberl martin@jopdesign.com
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-- Author: Martin Schoeberl martin@jopdesign.com
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-- some defaults
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-- some defaults
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--
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--
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ahbsi.hsel(1 to NAHBSLV-1) <= (others => '0'); -- we use only slave 0
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ahbsi.hsel(1 to NAHBSLV-1) <= (others => '0'); -- we use only slave 0
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ahbsi.hsel(0) <= scmo.rd or scmo.wr; -- slave select
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ahbsi.hsel(0) <= scmo.rd or scmo.wr; -- slave select
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-- do we need to store the addrsss in a register?
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-- do we need to store the addrsss in a register?
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ahbsi.haddr(MEM_ADDR_SIZE-1+2 downto 2) <= scmo.address; -- address bus (byte)
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ahbsi.haddr(SC_ADDR_SIZE-1+2 downto 2) <= scmo.address; -- address bus (byte)
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ahbsi.haddr(1 downto 0) <= (others => '0');
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ahbsi.haddr(1 downto 0) <= (others => '0');
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ahbsi.haddr(31 downto MEM_ADDR_SIZE+2) <= (others => '0');
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ahbsi.haddr(31 downto SC_ADDR_SIZE+2) <= (others => '0');
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ahbsi.hwrite <= scmo.wr; -- read/write
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ahbsi.hwrite <= scmo.wr; -- read/write
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ahbsi.htrans <= HTRANS_NONSEQ; -- transfer type
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ahbsi.htrans <= HTRANS_NONSEQ; -- transfer type
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ahbsi.hsize <= "010"; -- transfer size 32 bits
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ahbsi.hsize <= "010"; -- transfer size 32 bits
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ahbsi.hburst <= HBURST_SINGLE; -- burst type
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ahbsi.hburst <= HBURST_SINGLE; -- burst type
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ahbsi.hwdata <= reg_wr_data; -- write data bus
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ahbsi.hwdata <= reg_wr_data; -- write data bus
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