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author | Tristan Gingold | 2013-12-20 04:48:54 +0100 |
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committer | Tristan Gingold | 2013-12-20 04:48:54 +0100 |
commit | 6c3f709174e8e4d5411f851cedb7d84c38d3b04a (patch) | |
tree | bd12c79c71a2ee65899a9ade9919ec2045addef8 /testsuite/vests/vhdl-ams/ashenden/compliant/digital-modeling/microprocessor.vhd | |
parent | bd4aff0f670351c0652cf24e9b04361dc0e3a01c (diff) | |
download | ghdl-6c3f709174e8e4d5411f851cedb7d84c38d3b04a.tar.gz ghdl-6c3f709174e8e4d5411f851cedb7d84c38d3b04a.tar.bz2 ghdl-6c3f709174e8e4d5411f851cedb7d84c38d3b04a.zip |
Import vests testsuite
Diffstat (limited to 'testsuite/vests/vhdl-ams/ashenden/compliant/digital-modeling/microprocessor.vhd')
-rw-r--r-- | testsuite/vests/vhdl-ams/ashenden/compliant/digital-modeling/microprocessor.vhd | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/testsuite/vests/vhdl-ams/ashenden/compliant/digital-modeling/microprocessor.vhd b/testsuite/vests/vhdl-ams/ashenden/compliant/digital-modeling/microprocessor.vhd new file mode 100644 index 0000000..14bf0b9 --- /dev/null +++ b/testsuite/vests/vhdl-ams/ashenden/compliant/digital-modeling/microprocessor.vhd @@ -0,0 +1,55 @@ + +-- Copyright (C) 2002 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 + +entity reg is + port ( d : in bit_vector(7 downto 0); + q : out bit_vector(7 downto 0); + clk : in bit ); +end entity reg; + +-------------------------------------------------- + +-- not in book + +entity microprocessor is +end entity microprocessor; + +-- end not in book + +architecture RTL of microprocessor is + + signal interrupt_req : bit; + signal interrupt_level : bit_vector(2 downto 0); + signal carry_flag, negative_flag, overflow_flag, zero_flag : bit; + signal program_status : bit_vector(7 downto 0); + signal clk_PSR : bit; + -- . . . + +begin + + PSR : entity work.reg + port map ( d(7) => interrupt_req, + d(6 downto 4) => interrupt_level, + d(3) => carry_flag, d(2) => negative_flag, + d(1) => overflow_flag, d(0) => zero_flag, + q => program_status, + clk => clk_PSR ); + -- . . . + +end architecture RTL; |