diff options
Diffstat (limited to 'testsuite/vests/vhdl-93/ashenden/compliant/ch_18_fg_18_09.vhd')
| -rw-r--r-- | testsuite/vests/vhdl-93/ashenden/compliant/ch_18_fg_18_09.vhd | 115 |
1 files changed, 115 insertions, 0 deletions
diff --git a/testsuite/vests/vhdl-93/ashenden/compliant/ch_18_fg_18_09.vhd b/testsuite/vests/vhdl-93/ashenden/compliant/ch_18_fg_18_09.vhd new file mode 100644 index 000000000..c121b6926 --- /dev/null +++ b/testsuite/vests/vhdl-93/ashenden/compliant/ch_18_fg_18_09.vhd @@ -0,0 +1,115 @@ + +-- Copyright (C) 1996 Morgan Kaufmann Publishers, Inc + +-- This file is part of VESTs (Vhdl tESTs). + +-- VESTs is free software; you can redistribute it and/or modify it +-- under the terms of the GNU General Public License as published by the +-- Free Software Foundation; either version 2 of the License, or (at +-- your option) any later version. + +-- VESTs 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 more details. + +-- You should have received a copy of the GNU General Public License +-- along with VESTs; if not, write to the Free Software Foundation, +-- Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + +-- --------------------------------------------------------------------- +-- +-- $Id: ch_18_fg_18_09.vhd,v 1.3 2001-10-26 16:29:36 paw Exp $ +-- $Revision: 1.3 $ +-- +-- --------------------------------------------------------------------- + +library bv_utilities; + +use bv_utilities.bv_arithmetic.all, std.textio.all; + +architecture file_loaded of memory is +begin + + mem_behavior : process is + + constant high_address : natural := mem_size - 1; + + type memory_array is + array (natural range 0 to high_address / 4) of dlx_bv_word; + + variable mem : memory_array; + + -- . . . -- other variables as in architecture preloaded + + procedure load is + + file binary_file : text open read_mode is load_file_name; + variable L : line; + variable ch : character; + variable line_number : natural := 0; + variable addr : natural; + variable word : dlx_bv_word; + + procedure read_hex_natural(L : inout line; n : out natural) is + variable result : natural := 0; + begin + for i in 1 to 8 loop + read(L, ch); + if '0' <= ch and ch <= '9' then + result := result*16 + character'pos(ch) - character'pos('0'); + elsif 'A' <= ch and ch <= 'F' then + result := result*16 + character'pos(ch) - character'pos('A') + 10; + elsif 'a' <= ch and ch <= 'f' then + result := result*16 + character'pos(ch) - character'pos('a') + 10; + else + report "Format error in file " & load_file_name + & " on line " & integer'image(line_number) severity error; + end if; + end loop; + n := result; + end read_hex_natural; + + procedure read_hex_word(L : inout line; word : out dlx_bv_word) is + variable digit : natural; + variable r : natural := 0; + begin + for i in 1 to 8 loop + read(L, ch); + if '0' <= ch and ch <= '9' then + digit := character'pos(ch) - character'pos('0'); + elsif 'A' <= ch and ch <= 'F' then + digit := character'pos(ch) - character'pos('A') + 10; + elsif 'a' <= ch and ch <= 'f' then + digit := character'pos(ch) - character'pos('a') + 10; + else + report "Format error in file " & load_file_name + & " on line " & integer'image(line_number) + severity error; + end if; + word(r to r+3) := natural_to_bv(digit, 4); + r := r + 4; + end loop; + end read_hex_word; + + begin + while not endfile(binary_file) loop + readline(binary_file, L); + line_number := line_number + 1; + read_hex_natural(L, addr); + read(L, ch); -- the space between addr and data + read_hex_word(L, word); + mem(addr / 4) := word; + end loop; + end load; + + procedure do_write is -- . . . -- as in architecture preloaded + + procedure do_read is -- . . . -- as in architecture preloaded + + begin + load; -- read binary memory image into memory array + -- . . . -- as in architecture preloaded + end process mem_behavior; + + end architecture file_loaded; |