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[/] [open8_urisc/] [trunk/] [VHDL/] [o8_cpu.vhd] - Diff between revs 263 and 264

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Rev 263 Rev 264
Line 253... Line 253... 
-- Seth Henry      06/09/20 Added ability to use unsigned index offsets for
 
-- Seth Henry      06/09/20 Added ability to use unsigned index offsets for
 
--                           LDO/STO. Also pipelined the address calculation
 
--                           LDO/STO. Also pipelined the address calculation
 
--                           for indexed instructions, reducing the final
 
--                           for indexed instructions, reducing the final
 
--                           address generator to a multiplexor fed only by
 
--                           address generator to a multiplexor fed only by
 
--                           registers.
 
--                           registers.
 
 
 
-- Seth Henry      07/10/20 Fixed a bug in the LDO/LDX logic where the register
 
 
 
--                           pair wasn't being incremented properly due to a
 
 
 
--                           missing UPP2 signal to the ALU.
 
 
 
 
 
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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