- added models

git-svn-id: http://moon:8086/svn/vhdl/trunk@1290 cc03376c-175c-47c8-b038-4cd826a8556b
2015-06-10 19:27:35 +00:00
parent 8eb6b3ff9e
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+-------------------------------------------------------------------------------
+--                                                                           --
+-- This is a data generator for the testbench for Micron's Synchronous       --
+-- DRAM. This generator reads a text file line-by-line and generates         --
+-- a file of test vectors that is then read by the testbench and             --
+-- applied to the part.                                                      --
+--                                                                           --
+-- This VHDL program creates a text file of test vectors that is used by the --
+-- test bench. Place your commands in a file (a copy of VEC_GEN.VHD) and run --
+-- VEC_GEN.VHD in your VHDL simulator (make sure you have compiled this      --
+-- package prior to running the program VEC_GEN.VHD). This will produce the  --
+-- vectors that are required to run the included testbench. Change the name  --
+-- of the vector file to save your vectors in separate files. The default    --
+-- file name for the output vectors generated from this pacakage is          --
+-- "test.txt."                                                               --
+--                                                                           --
+-- Now compile and run the testbench program embedtb.vhd. The testbench uses --                     
+-- the default test.txt as input vectors.                                    --
+--                                                                           --
+--                                                                           --
+-- Copyright 1997 Micron Technology, Inc.                                    --
+--                                                                           --
+-------------------------------------------------------------------------------
+
+LIBRARY work;
+LIBRARY ieee;
+USE ieee.std_logic_1164.all;
+USE std.textio.all;
+USE work.io_utils.all;
+
+
+PACKAGE generate_vectors IS
+
+    CONSTANT set_up : TIME;
+    CONSTANT hold : TIME;
+    CONSTANT cycle_start : TIME;   
+
+    SIGNAL cycle : INTEGER := 0;
+    SIGNAL sim_time : TIME := 0 ns;
+    FILE output_file:TEXT IS OUT "test.txt";   
+    PROCEDURE write(col_address : IN INTEGER; bank : IN BIT;
+                   first_data : IN INTEGER; dqm : IN BIT_VECTOR(1 DOWNTO 0); cke : IN BIT);
+    PROCEDURE read(col_address : IN INTEGER; bank : IN BIT; dqm : IN BIT_VECTOR(1 DOWNTO 0); cke : IN BIT);
+    PROCEDURE active(row_address : IN INTEGER; bank : IN BIT; data_bus : IN INTEGER; dqm : IN BIT_VECTOR(1 DOWNTO 0); cke : IN BIT);
+    PROCEDURE precharge(bank : IN BIT; address : IN INTEGER; data_bus: IN INTEGER; dqm : IN BIT_VECTOR(1 DOWNTO 0); cke : IN BIT);
+    PROCEDURE nop(data_bus : IN INTEGER; dqm : IN BIT_VECTOR(1 DOWNTO 0); cke : IN BIT; cs : IN BIT);                  
+    PROCEDURE burst_term(data_bus : IN INTEGER; dqm : IN BIT_VECTOR(1 DOWNTO 0); cke : IN BIT);
+    PROCEDURE auto_refresh;
+    PROCEDURE next_cycle(SIGNAL clk : IN BIT);
+    PROCEDURE load_array(load : IN BIT);
+    PROCEDURE load_mode_reg(op_code : IN INTEGER; cke : IN BIT);
+    PROCEDURE unload_array(row_start : IN INTEGER; row_end : IN INTEGER; bank : IN BIT); 
+
+END generate_vectors;
+
+
+PACKAGE BODY generate_vectors IS
+   
+    CONSTANT set_up : TIME := 3 ns;
+    CONSTANT hold : TIME := 1 ns;
+    CONSTANT cycle_start : TIME := 0 ns;
+
+
+PROCEDURE write(col_address : IN INTEGER; bank : IN BIT; first_data : IN INTEGER; 
+                 dqm : IN BIT_VECTOR(1 DOWNTO 0); cke : IN BIT) IS
+
+VARIABLE l : LINE;
+
+BEGIN
+
+IF cycle = 0 THEN   
+   write(l, cycle_start, left, 4, ns);
+ELSE
+   write(l, now-set_up, left, 4, ns);
+END IF;      
+
+write(l, Cke, right, 4); --Cke
+write(l, 0, right, 4); --Cs
+write(l, 1, right, 4); --Ras
+write(l, 0, right, 4); --Cas
+write(l, 0, right, 4); --We
+write(l, dqm, right, 4); --Dqm
+write(l, bank, right, 4); --Ba
+write(l, col_address, right, 6); --address
+write(l, first_data, right, 6); --first data location
+--write(l, 0, right, 4); --load
+--write(l, 0, right, 4); --unload
+--write(l, 0, right, 6); --row_address_start
+--write(l, 0, right, 6); --row_address_end
+writeline(output_file,l); --write vector to file
+
+END;
+
+PROCEDURE read(col_address : IN INTEGER; bank : IN BIT; dqm : IN BIT_VECTOR(1 DOWNTO 0); cke : IN BIT) IS
+ 
+VARIABLE l : LINE;
+
+BEGIN
+
+IF cycle = 0 THEN   
+   write(l, cycle_start, left, 4, ns);
+ELSE
+   write(l, now-set_up, left, 4, ns);
+END IF;
+   
+write(l, Cke, right, 4); --Cke
+write(l, 0, right, 4); --Cs
+write(l, 1, right, 4); --Ras
+write(l, 0, right, 4); --Cas
+write(l, 1, right, 4); --We
+write(l, dqm, right, 4); --Dqm
+write(l, bank, right, 4); --Ba
+write(l, col_address, right, 6); --address
+write(l, -100, right, 6); --first data location
+--write(l, 0, right, 4); --load
+--write(l, 0, right, 4); --unload
+--write(l, 0, right, 6); --row_address_start
+--write(l, 0, right, 6); --row_address_end
+writeline(output_file,l); --write vector to file
+
+END;
+
+PROCEDURE active(row_address : IN INTEGER; bank : IN BIT; data_bus : IN INTEGER; dqm : IN BIT_VECTOR(1 DOWNTO 0); cke : IN BIT) IS
+
+VARIABLE l : LINE;
+
+BEGIN
+
+IF cycle = 0 THEN   
+   write(l, cycle_start, left, 4, ns);
+ELSE
+   write(l, now-set_up, left, 4, ns);
+END IF;
+   
+write(l, Cke, right, 4); --Cke
+write(l, 0, right, 4); --Cs
+write(l, 0, right, 4); --Ras
+write(l, 1, right, 4); --Cas
+write(l, 1, right, 4); --We
+write(l, dqm, right, 4); --Dqm
+write(l, bank, right, 4); --Ba
+write(l, row_address, right, 6); --address
+write(l, data_bus, right, 6); --first data location
+--write(l, 0, right, 4); --load
+--write(l, 0, right, 4); --unload
+--write(l, 0, right, 6); --row_address_start
+--write(l, 0, right, 6); --row_address_end
+writeline(output_file,l); --write vector to file
+
+END;
+
+PROCEDURE precharge(bank : IN BIT; address : IN INTEGER; data_bus: IN INTEGER; dqm : IN BIT_VECTOR(1 DOWNTO 0); cke : IN BIT) IS
+
+VARIABLE l : LINE;
+
+BEGIN
+
+IF cycle = 0 THEN   
+   write(l, cycle_start, left, 4, ns);
+ELSE
+   write(l, now-set_up, left, 4, ns);
+END IF;
+   
+write(l, Cke, right, 4); --Cke
+write(l, 0, right, 4); --Cs
+write(l, 0, right, 4); --Ras
+write(l, 1, right, 4); --Cas
+write(l, 0, right, 4); --We
+write(l, dqm, right, 4); --Dqm
+write(l, bank, right, 4); --Ba
+write(l, address, right, 6); --address
+write(l, data_bus, right, 6); --first data location
+--write(l, 0, right, 4); --load
+--write(l, 0, right, 4); --unload
+--write(l, 0, right, 6); --row_address_start
+--write(l, 0, right, 6); --row_address_end
+writeline(output_file,l); --write vector to file
+
+END;
+
+PROCEDURE nop(data_bus : IN INTEGER; dqm : IN BIT_VECTOR(1 DOWNTO 0); cke : IN BIT; cs : IN BIT) IS
+         
+
+VARIABLE l : LINE;
+VARIABLE col_address : INTEGER := 0;
+VARIABLE bank : BIT := '0';
+
+BEGIN
+
+IF cycle = 0 THEN   
+   write(l, cycle_start, left, 4, ns);
+ELSE
+   write(l, now-set_up, left, 4, ns);
+END IF;
+   
+write(l, cke, right, 4); --Cke
+write(l, cs, right, 4); --Cs
+write(l, 1, right, 4); --Ras
+write(l, 1, right, 4); --Cas
+write(l, 1, right, 4); --We
+write(l, dqm, right, 4); --Dqm
+write(l, bank, right, 4); --Ba
+write(l, col_address, right, 6); --address
+write(l, data_bus, right, 6); --first data location
+--write(l, 0, right, 4); --load
+--write(l, 0, right, 4); --unload
+--write(l, 0, right, 6); --row_address_start
+--write(l, 0, right, 6); --row_address_end
+writeline(output_file,l); --write vector to file
+
+END;
+
+
+PROCEDURE burst_term(data_bus : IN INTEGER; dqm : IN BIT_VECTOR(1 DOWNTO 0); cke : IN BIT) IS
+
+VARIABLE l : LINE;
+VARIABLE col_address : INTEGER := 0;
+
+BEGIN
+
+IF cycle = 0 THEN   
+   write(l, cycle_start, left, 4, ns);
+ELSE
+   write(l, now-set_up, left, 4, ns);
+END IF;
+   
+write(l, cke, right, 4); --Cke
+write(l, 0, right, 4); --Cs
+write(l, 1, right, 4); --Ras
+write(l, 1, right, 4); --Cas
+write(l, 0, right, 4); --We
+write(l, dqm, right, 4); --Dqm
+write(l, 0, right, 4); --Ba
+write(l, col_address, right, 6); --address
+write(l, data_bus, right, 6); --first data location
+--write(l, 0, right, 4); --load
+--write(l, 0, right, 4); --unload
+--write(l, 0, right, 6); --row_address_start
+--write(l, 0, right, 6); --row_address_end
+writeline(output_file,l); --write vector to file
+
+END;
+
+PROCEDURE auto_refresh IS
+    VARIABLE l : LINE;
+    VARIABLE dqm : BIT_VECTOR(1 DOWNTO 0) := "00";
+BEGIN
+    IF cycle = 0 THEN   
+        write(l, cycle_start, left, 4, ns);
+    ELSE
+        write(l, now-set_up, left, 4, ns);
+    END IF;
+    write(l, 1, right, 4); --Cke
+    write(l, 0, right, 4); --Cs
+    write(l, 0, right, 4); --Ras
+    write(l, 0, right, 4); --Cas
+    write(l, 1, right, 4); --We
+    write(l, dqm, right, 4); --Dqm
+    write(l, 0, right, 4); --Ba
+    write(l, 0, right, 6); --address
+    write(l, -100, right, 6); --first data location
+    --write(l, 0, right, 4); --load
+    --write(l, 0, right, 4); --unload
+    --write(l, 0, right, 6); --row_address_start
+    --write(l, 0, right, 6); --row_address_end
+    writeline(output_file,l); --write vector to file
+END;
+
+
+PROCEDURE next_cycle(SIGNAL clk : IN BIT) IS
+
+BEGIN
+
+WAIT UNTIL clk = '1';
+
+END;
+
+PROCEDURE load_array(load : IN BIT) IS
+
+VARIABLE l : LINE;
+VARIABLE dqm : BIT_VECTOR(1 DOWNTO 0) := "00";
+
+BEGIN
+
+IF cycle = 0 THEN   
+   write(l, cycle_start, left, 4, ns);
+ELSE
+   write(l, now-set_up, left, 4, ns);
+END IF;
+
+write(l, 1, right, 4); --Cke
+write(l, 0, right, 4); --Cs
+write(l, 1, right, 4); --Ras
+write(l, 1, right, 4); --Cas
+write(l, 1, right, 4); --We
+write(l, dqm, right, 4); --Dqm
+write(l, 0, right, 4); --Ba
+write(l, 0, right, 6); --address
+write(l, -100, right, 6); --first data location
+--write(l, 1, right, 4); --load
+--write(l, 0, right, 4); --unload
+--write(l, 0, right, 6); --row_address_start
+--write(l, 0, right, 6); --row_address_end
+writeline(output_file,l); --write vector to file
+
+END;
+
+PROCEDURE unload_array(row_start : IN INTEGER; row_end : IN INTEGER; bank : IN BIT) IS
+
+VARIABLE l : LINE;
+VARIABLE dqm : BIT_VECTOR(1 DOWNTO 0) := "00";
+
+BEGIN
+
+IF cycle = 0 THEN   
+   write(l, cycle_start, left, 4, ns);
+ELSE
+   write(l, now-set_up, left, 4, ns);
+END IF;
+
+write(l, 1, right, 4); --Cke
+write(l, 0, right, 4); --Cs
+write(l, 1, right, 4); --Ras
+write(l, 1, right, 4); --Cas
+write(l, 1, right, 4); --We
+write(l, dqm, right, 4); --Dqm
+write(l, bank, right, 4); --Ba
+write(l, 0, right, 6); --address
+write(l, -100, right, 6); --first data location
+--write(l, 0, right, 4); --load
+--write(l, 1, right, 4); --unload
+--write(l, row_start, right, 6); --row_address_start
+--write(l, row_end, right, 6); --row_address_end
+writeline(output_file,l); --write vector to file
+
+END;
+
+PROCEDURE load_mode_reg(op_code : IN INTEGER; cke : IN BIT) IS
+
+VARIABLE l : LINE;
+VARIABLE dqm : BIT_VECTOR(1 DOWNTO 0) := "00";
+
+BEGIN
+
+IF cycle = 0 THEN   
+   write(l, cycle_start, left, 4, ns);
+ELSE
+   write(l, now-set_up, left, 4, ns);
+END IF;
+
+write(l, cke, right, 4); --Cke
+write(l, 0, right, 4); --Cs
+write(l, 0, right, 4); --Ras
+write(l, 0, right, 4); --Cas
+write(l, 0, right, 4); --We
+write(l, dqm, right, 4); --Dqm
+write(l, 0, right, 4); --Ba
+write(l, op_code, right, 6); --address
+write(l, -100, right, 6); --first data location
+--write(l, 0, right, 4); --load
+--write(l, 0, right, 4); --unload
+--write(l, 0, right, 6); --row_address_start
+--write(l, 0, right, 6); --row_address_end
+writeline(output_file,l); --write vector to file
+
+END;
+
+END generate_vectors;
+