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[/] [open8_urisc/] [trunk/] [VHDL/] [o8_sys_timer.vhd] - Diff between revs 246 and 273

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Rev 246 Rev 273
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-- ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-- ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-- (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
-- (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
-- THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-- THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
--
--
-- VHDL Units :  o8_sys_timer
-- VHDL Units :  o8_sys_timer
-- Description:  Provides an 8-bit microsecond resolution timer for generating
-- Description:  Provides an 8-bit milli/microsecond resolution timer for
--            :   periodic interrupts for the Open8 CPU.
--            :   generating periodic interrupts for the Open8 CPU.
--
--
--
--
-- Revision History
-- Revision History
-- Author          Date     Change
-- Author          Date     Change
------------------ -------- ---------------------------------------------------
------------------ -------- ---------------------------------------------------
Line 33... Line 33...
-- Seth Henry      12/19/19 Renamed Tmr_Out to Interrupt
-- Seth Henry      12/19/19 Renamed Tmr_Out to Interrupt
-- Seth Henry      04/09/20 Modified timer update logic to reset the timer on
-- Seth Henry      04/09/20 Modified timer update logic to reset the timer on
--                           interval write.
--                           interval write.
-- Seth Henry      04/16/20 Modified to use Open8 bus record
-- Seth Henry      04/16/20 Modified to use Open8 bus record
-- Seth Henry      05/18/20 Added write qualification input
-- Seth Henry      05/18/20 Added write qualification input
 
-- Seth Henry      11/01/20 Changed description to note different resolutions
 
 
library ieee;
library ieee;
use ieee.std_logic_1164.all;
use ieee.std_logic_1164.all;
  use ieee.std_logic_unsigned.all;
  use ieee.std_logic_unsigned.all;
  use ieee.std_logic_arith.all;
  use ieee.std_logic_arith.all;

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