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[/] [w11/] [tags/] [w11a_V0.74/] [rtl/] [w11a/] [sys_conf.vhd] - Rev 2
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-- $Id: sys_conf.vhd 314 2010-07-09 17:38:41Z mueller $ -- -- Copyright 2007-2008 by Walter F.J. Mueller <W.F.J.Mueller@gsi.de> -- -- This program is free software; you may redistribute and/or modify it under -- the terms of the GNU General Public License as published by the Free -- Software Foundation, either version 2, 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 complete details. -- ------------------------------------------------------------------------------ -- Package Name: sys_conf -- Description: Default definitions for pdp11core (for simple test benches) -- -- Dependencies: - -- Tool versions: xst 8.1, 8.2, 9.1, 9.2; ghdl 0.18-0.25 -- Revision History: -- Date Rev Version Comment -- 2008-02-23 118 1.0 Initial version ------------------------------------------------------------------------------ library ieee; use ieee.std_logic_1164.all; use work.slvtypes.all; package sys_conf is constant sys_conf_bram_awidth : integer := 15; -- 32 kB BRAM constant sys_conf_mem_losize : integer := 8#000777#;-- 32 kByte -- constant sys_conf_bram_awidth : integer := 14; -- 16 kB BRAM -- constant sys_conf_mem_losize : integer := 8#000377#;-- 16 kByte end package sys_conf; -- Note: mem_losize holds 16 MSB of the PA of the addressable memory -- 2 211 111 111 110 000 000 000 -- 1 098 765 432 109 876 543 210 -- -- 0 000 000 011 111 111 000 000 -> 00037777 --> 14bit --> 16 kByte -- 0 000 000 011 111 111 000 000 -> 00077777 --> 15bit --> 32 kByte -- 0 011 111 111 111 111 000 000 -> 03777777 --> 20bit --> 1 MByte -- 1 110 111 111 111 111 000 000 -> 16777777 --> 22bit --> 4 MByte -- upper 256 kB excluded for 11/70 UB
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