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Diffstat (limited to 'testsuite/vests/vhdl-ams/ashenden/compliant/packages/cpu_types.vhd')
-rw-r--r-- | testsuite/vests/vhdl-ams/ashenden/compliant/packages/cpu_types.vhd | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/testsuite/vests/vhdl-ams/ashenden/compliant/packages/cpu_types.vhd b/testsuite/vests/vhdl-ams/ashenden/compliant/packages/cpu_types.vhd new file mode 100644 index 000000000..10d497c63 --- /dev/null +++ b/testsuite/vests/vhdl-ams/ashenden/compliant/packages/cpu_types.vhd @@ -0,0 +1,51 @@ + +-- 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 + +-- code from book + +package cpu_types is + + constant word_size : positive := 16; + constant address_size : positive := 24; + + subtype word is bit_vector(word_size - 1 downto 0); + subtype address is bit_vector(address_size - 1 downto 0); + + type status_value is ( halted, idle, fetch, mem_read, mem_write, + io_read, io_write, int_ack ); + +end package cpu_types; + +-- end code from book + + + +package cpu_types_test is + + constant status : + -- code from book + work.cpu_types.status_value + -- end code from book + := + -- code from book + work.cpu_types.status_value'(work.cpu_types.fetch) + -- end code from book + ; + +end package cpu_types_test; |