diff options
Diffstat (limited to 'zpu/hdl/zy2000/zpu_config.vhd')
-rw-r--r-- | zpu/hdl/zy2000/zpu_config.vhd | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/zpu/hdl/zy2000/zpu_config.vhd b/zpu/hdl/zy2000/zpu_config.vhd new file mode 100644 index 0000000..c0df294 --- /dev/null +++ b/zpu/hdl/zy2000/zpu_config.vhd @@ -0,0 +1,20 @@ +library ieee; +use ieee.std_logic_1164.all; +use ieee.std_logic_unsigned.all; + +package zpu_config is + -- generate trace output or not. + constant Generate_Trace : boolean := false; + constant wordPower : integer := 5; + -- during simulation, set this to '0' to get matching trace.txt + constant DontCareValue : std_logic := '0'; + -- Clock frequency in MHz. + constant ZPU_Frequency : std_logic_vector(7 downto 0) := x"40"; + -- This is the msb address bit. bytes=2^(maxAddrBitIncIO+1) + constant maxAddrBitIncIO : integer := 27; + + -- start byte address of stack. + -- point to top of RAM - 2*words + constant spStart : std_logic_vector(maxAddrBitIncIO downto 0) := x"1fffff8"; + +end zpu_config; |