changed c_tech_ddr4_max to use a dual rank DDR4 as single rank (see

CS1_n, CKE1, ODT1 in tech_ddr_arria10.vhd)

libraries/technology/ddr/tech_ddr_pkg.vhd

@@ -81,7 +81,8 @@ PACKAGE tech_ddr_pkg IS
   CONSTANT c_tech_ddr3_4g_single_rank_800m_master : t_c_tech_ddr := ("DDR3",  800,  TRUE, "SINGLE", 16, 16, 10, 3, 64, 8,  8, 0,  0, 2, 1,  1, 0,   1,  14,  4,  2,    4,  64,   7);
   CONSTANT c_tech_ddr3_4g_single_rank_800m_slave  : t_c_tech_ddr := ("DDR3",  800, FALSE, "SINGLE", 16, 16, 10, 3, 64, 8,  8, 0,  0, 2, 1,  1, 0,   1,  14,  4,  2,    4,  64,   7);
   
-  CONSTANT c_tech_ddr4_max                        : t_c_tech_ddr := ("none", 1600,  TRUE, "DUAL  ", 17, 15, 10, 2, 72, 9,  0, 9,  2, 1, 1,  1, 0,   1,   0,  8,  3,    8,  64,   7);  -- maximum ranges for record field definitions
+--CONSTANT c_tech_ddr4_max                        : t_c_tech_ddr := ("none", 1600,  TRUE, "DUAL  ", 17, 15, 10, 2, 72, 9,  0, 9,  2, 1, 1,  1, 0,   1,   0,  8,  3,    8,  64,   7);  -- maximum ranges for record field definitions
+  CONSTANT c_tech_ddr4_max                        : t_c_tech_ddr := ("none", 1600,  TRUE, "DUAL  ", 17, 15, 10, 2, 72, 9,  0, 9,  2, 2, 2,  2, 1,   2,   0,  8,  3,    8,  64,   7);  -- maximum ranges for record field definitions
   
   CONSTANT c_tech_ddr4_sim_4k                     : t_c_tech_ddr := ("DDR4", 1600,  TRUE, "DUAL  ", 10,  1, 10, 2, 72, 9,  0, 9,  2, 1, 1,  1, 0,   1,   0,  8,  3,    8,  64,   7);  -- use a_row to set nof ctrl addr = 2**(cs_w + ba + a_row + a_col + bg_w - rsl_w)
   CONSTANT c_tech_ddr4_sim_8k                     : t_c_tech_ddr := ("DDR4", 1600,  TRUE, "DUAL  ", 10,  2, 10, 2, 72, 9,  0, 9,  2, 1, 1,  1, 0,   1,   0,  8,  3,    8,  64,   7);  -- use a_row to set nof ctrl addr = 2**(cs_w + ba + a_row + a_col + bg_w - rsl_w)