all/system_top.v: drive unused gpio inputs with zero

The loopback on the unused gpio inputs consumes routing resources
while does not gives any value for the software.

Connect these lines to zero instead.

projects/ad9265_fmc/zc706/system_top.v

@@ -113,7 +113,7 @@ ad_iobuf #(.DATA_WIDTH(15)) iobuf_gpio_bd (
   .dio_t (gpio_t[14:0]),
   .dio_p (gpio_bd));
 
-assign gpio_i[63:15] = gpio_o[63:15];
+assign gpio_i[63:15] = 'h0;
 
 ad9265_spi i_spi (
     .spi_csn(spi0_csn[1:0]),

projects/ad9434_fmc/zc706/system_top.v

@@ -99,7 +99,7 @@ module system_top (
 
   // assignments
 
-  assign gpio_i[63:15] = gpio_o[63:15];
+  assign gpio_i[63:15] = 'h0;
 
   // instantiations
 

projects/ad9467_fmc/kc705/system_top.v

@@ -133,8 +133,8 @@ module system_top (
      .dio_o (gpio_i[16:0]),
      .dio_p (gpio_bd));
 
-  assign gpio_i[63:32] = gpio_o[63:32];
-  assign gpio_i[31:17] = gpio_o[31:17];
+  assign gpio_i[63:32] = 'h0;
+  assign gpio_i[31:17] = 'h0;
 
   system_wrapper i_system_wrapper (
       .ddr3_addr (ddr3_addr),

projects/ad9467_fmc/zed/system_top.v

@@ -115,7 +115,7 @@ wire            iic_mux_sda_t_s;
     .dio_o ({gpio_i[31:0]}),
     .dio_p (gpio_bd));
 
-  assign gpio_i[63:32] = gpio_o[63:32];
+  assign gpio_i[63:32] = 'h0;
 
    ad_iobuf #(.DATA_WIDTH(2)) i_iobuf_iic_scl (
     .dio_t ({iic_mux_scl_t_s,iic_mux_scl_t_s}),

projects/ad9739a_fmc/zc706/system_top.v

@@ -118,7 +118,7 @@ module system_top (
     .dio_o (gpio_i[14:0]),
     .dio_p (gpio_bd));
 
-  assign gpio_i[63:15] = gpio_o[63:15];
+  assign gpio_i[63:15] = 'h0;
 
   system_wrapper i_system_wrapper (
     .ddr_addr (ddr_addr),

projects/adrv9009/zcu102/system_top.v

@@ -115,8 +115,8 @@ module system_top (
   wire                    tx_sync;
   wire                    sysref;
 
-  assign gpio_i[94:60] = gpio_o[94:60];
-  assign gpio_i[31:21] = gpio_o[31:21];
+  assign gpio_i[94:60] = 'h0;
+  assign gpio_i[31:21] = 'h0;
 
   assign sysref_out = 0;
 
@@ -199,7 +199,7 @@ module system_top (
               adrv9009_gpio_16,     // 33
               adrv9009_gpio_18}));  // 32
 
-  assign gpio_i[ 7: 0] = gpio_o[ 7: 0];
+  assign gpio_i[ 7: 0] = 'h0;
   assign gpio_i[20: 8] = gpio_bd_i;
   assign gpio_bd_o = gpio_o[ 7: 0];
 

projects/adrv9361z7035/ccbob_cmos/system_top.v

@@ -128,7 +128,7 @@ module system_top (
 
   // board gpio - 31-0
 
-  assign gpio_i[31:20] = gpio_o[31:20];
+  assign gpio_i[31:20] = 'h0;
 
   ad_iobuf #(.DATA_WIDTH(20)) i_iobuf_bd (
     .dio_t (gpio_t[19:0]),
@@ -138,8 +138,8 @@ module system_top (
 
   // ad9361 gpio - 63-32
 
-  assign gpio_i[63:52] = gpio_o[63:52];
-  assign gpio_i[50:47] = gpio_o[50:47];
+  assign gpio_i[63:52] = 'h0;
+  assign gpio_i[50:47] = 'h0;
 
   ad_iobuf #(.DATA_WIDTH(16)) i_iobuf (
     .dio_t ({gpio_t[51], gpio_t[46:32]}),

projects/adrv9361z7035/ccbob_lvds/system_top.v

@@ -132,7 +132,7 @@ module system_top (
 
   // board gpio - 31-0
 
-  assign gpio_i[31:20] = gpio_o[31:20];
+  assign gpio_i[31:20] = 'h0;
 
   ad_iobuf #(.DATA_WIDTH(20)) i_iobuf_bd (
     .dio_t (gpio_t[19:0]),
@@ -142,8 +142,8 @@ module system_top (
 
   // ad9361 gpio - 63-32
 
-  assign gpio_i[63:52] = gpio_o[63:52];
-  assign gpio_i[50:47] = gpio_o[50:47];
+  assign gpio_i[63:52] = 'h0;
+  assign gpio_i[50:47] = 'h0;
 
   ad_iobuf #(.DATA_WIDTH(16)) i_iobuf (
     .dio_t ({gpio_t[51], gpio_t[46:32]}),

projects/adrv9361z7035/ccbox_lvds/system_top.v

@@ -159,9 +159,9 @@ module system_top (
 
   // gpio[31:20] controls misc stuff (keep as io)
 
-  assign gpio_i[31:29] = gpio_o[31:29];
+  assign gpio_i[31:29] = 'h0;
   assign gpio_i[28:28] = imu_ready;
-  assign gpio_i[27:27] = gpio_o[27:27];
+  assign gpio_i[27:27] = 'h0;
 
   // rtc int gpio - 26
 
@@ -193,7 +193,7 @@ module system_top (
 
   // gpio[19:16] controls adp5061 (keep as io)
 
-  assign gpio_i[19] = gpio_o[19];
+  assign gpio_i[19] = 'h0;
 
   ad_iobuf #(.DATA_WIDTH(3)) i_iobuf_adp5061 (
     .dio_t (gpio_t[18:16]),
@@ -210,7 +210,7 @@ module system_top (
   assign oled_dc = gpio_o[11];
   assign oled_rst = gpio_o[10];
   assign imu_rstn = gpio_o[9];
-  assign gpio_i[11:9] = gpio_o[11:9];
+  assign gpio_i[11:9] = 'h0;
 
   ad_iobuf #(.DATA_WIDTH(1)) i_iobuf_imu_sync (
     .dio_t (gpio_t[8]),
@@ -230,14 +230,14 @@ module system_top (
   assign switch_led_r = gpio_o[2];
   assign switch_led_g = gpio_o[1];
   assign switch_led_b = gpio_o[0];
-  assign gpio_i[3:0] = gpio_o[3:0];
+  assign gpio_i[3:0] = 'h0;
 
   // unused gpio - 63:30
 
-  assign gpio_i[63] = gpio_o[63];
-  assign gpio_i[62] = gpio_o[62];
-  assign gpio_i[61] = gpio_o[61];
-  assign gpio_i[60] = gpio_o[60];
+  assign gpio_i[63] = 'h0;
+  assign gpio_i[62] = 'h0;
+  assign gpio_i[61] = 'h0;
+  assign gpio_i[60] = 'h0;
 
   // tsw-part-2 gpio - 59:57
 
@@ -259,7 +259,7 @@ module system_top (
 
   // unused gpio - 55:53
 
-  assign gpio_i[55:53] = gpio_o[55:53];
+  assign gpio_i[55:53] = 'h0;
 
   // rf & clock-select gpio - 52:51
 

projects/adrv9361z7035/ccfmc_lvds/system_top.v

@@ -227,7 +227,7 @@ module system_top (
 
   // board gpio - 31-0
 
-  assign gpio_i[31:21] = gpio_o[31:21];
+  assign gpio_i[31:21] = 'h0;
 
   ad_iobuf #(.DATA_WIDTH(21)) i_iobuf_bd (
     .dio_t (gpio_t[20:0]),
@@ -237,7 +237,7 @@ module system_top (
 
   // unused gpio - 63-61
 
-  assign gpio_i[63:61] = gpio_o[63:61];
+  assign gpio_i[63:61] = 'h0;
 
   // rf & ad9517 gpio - 60:56
 
@@ -253,7 +253,7 @@ module system_top (
 
   // unused gpio - 55:53
 
-  assign gpio_i[55:53] = gpio_o[55:53];
+  assign gpio_i[55:53] = 'h0;
 
   // rf & clock-select gpio - 52:51
 
@@ -266,7 +266,7 @@ module system_top (
 
   // unused gpio - 50:47
 
-  assign gpio_i[50:47] = gpio_o[50:47];
+  assign gpio_i[50:47] = 'h0;
 
   // ad9361 gpio - 46:32
 

projects/adrv9364z7020/ccbob_cmos/system_top.v

@@ -112,7 +112,7 @@ module system_top (
 
   // board gpio - 31-0
 
-  assign gpio_i[31:11] = gpio_o[31:11];
+  assign gpio_i[31:11] = 'h0;
 
   ad_iobuf #(.DATA_WIDTH(11)) i_iobuf_bd (
     .dio_t (gpio_t[10:0]),
@@ -122,8 +122,8 @@ module system_top (
 
   // ad9361 gpio - 63-32
 
-  assign gpio_i[63:52] = gpio_o[63:52];
-  assign gpio_i[50:47] = gpio_o[50:47];
+  assign gpio_i[63:52] = 'h0;
+  assign gpio_i[50:47] = 'h0;
 
   ad_iobuf #(.DATA_WIDTH(16)) i_iobuf (
     .dio_t ({gpio_t[51], gpio_t[46:32]}),

projects/adrv9364z7020/ccbob_lvds/system_top.v

@@ -116,7 +116,7 @@ module system_top (
 
   // board gpio - 31-0
 
-  assign gpio_i[31:11] = gpio_o[31:11];
+  assign gpio_i[31:11] = 'h0;
 
   ad_iobuf #(.DATA_WIDTH(11)) i_iobuf_bd (
     .dio_t (gpio_t[10:0]),
@@ -126,8 +126,8 @@ module system_top (
 
   // ad9361 gpio - 63-32
 
-  assign gpio_i[63:52] = gpio_o[63:52];
-  assign gpio_i[50:47] = gpio_o[50:47];
+  assign gpio_i[63:52] = 'h0;
+  assign gpio_i[50:47] = 'h0;
 
   ad_iobuf #(.DATA_WIDTH(16)) i_iobuf (
     .dio_t ({gpio_t[51], gpio_t[46:32]}),

projects/adrv9364z7020/ccbox_lvds/system_top.v

@@ -157,9 +157,9 @@ module system_top (
 
   // gpio[31:20] controls misc stuff (keep as io)
 
-  assign gpio_i[31:29] = gpio_o[31:29];
+  assign gpio_i[31:29] = 'h0;
   assign gpio_i[28:28] = imu_ready;
-  assign gpio_i[27:27] = gpio_o[27:27];
+  assign gpio_i[27:27] = 'h0;
 
   // rtc int gpio - 26
 
@@ -171,7 +171,7 @@ module system_top (
 
   // unused gpio - 25:24
 
-  assign gpio_i[25:24] = gpio_o[25:24];
+  assign gpio_i[25:24] = 'h0;
 
   // misc gpio - 23:20
 
@@ -186,7 +186,7 @@ module system_top (
 
   // gpio[19:16] controls adp5061 (keep as io)
 
-  assign gpio_i[19] = gpio_o[19];
+  assign gpio_i[19] = 'h0;
 
   ad_iobuf #(.DATA_WIDTH(3)) i_iobuf_adp5061 (
     .dio_t (gpio_t[18:16]),
@@ -203,7 +203,7 @@ module system_top (
   assign oled_dc = gpio_o[11];
   assign oled_rst = gpio_o[10];
   assign imu_rstn = gpio_o[9];
-  assign gpio_i[11:9] = gpio_o[11:9];
+  assign gpio_i[11:9] = 'h0;
 
   ad_iobuf #(.DATA_WIDTH(1)) i_iobuf_imu_sync (
     .dio_t (gpio_t[8]),
@@ -223,14 +223,14 @@ module system_top (
   assign switch_led_r = gpio_o[2];
   assign switch_led_g = gpio_o[1];
   assign switch_led_b = gpio_o[0];
-  assign gpio_i[3:0] = gpio_o[3:0];
+  assign gpio_i[3:0] = 'h0;
 
   // unused gpio - 63:30
 
-  assign gpio_i[63] = gpio_o[63];
-  assign gpio_i[62] = gpio_o[62];
-  assign gpio_i[61] = gpio_o[61];
-  assign gpio_i[60] = gpio_o[60];
+  assign gpio_i[63] = 'h0;
+  assign gpio_i[62] = 'h0;
+  assign gpio_i[61] = 'h0;
+  assign gpio_i[60] = 'h0;
 
   // tsw-part-2 gpio - 59:57
 
@@ -252,7 +252,7 @@ module system_top (
 
   // unused gpio - 55:53
 
-  assign gpio_i[55:53] = gpio_o[55:53];
+  assign gpio_i[55:53] = 'h0;
 
   // rf & clock-select gpio - 52:51
 

projects/adrv9371x/a10gx/system_top.v

@@ -136,10 +136,10 @@ module system_top (
 
   // gpio (ad9371)
 
-  assign gpio_i[63:61] = gpio_o[63:61];
+  assign gpio_i[63:61] = 'h0;
 
   assign dac_fifo_bypass = gpio_o[60];
-  assign gpio_i[60:60] = gpio_o[60];
+  assign gpio_i[60:60] = 'h0;
 
   assign ad9528_reset_b = gpio_o[59];
   assign ad9528_sysref_req = gpio_o[58];
@@ -149,11 +149,11 @@ module system_top (
   assign ad9371_rx2_enable = gpio_o[54];
   assign ad9371_test = gpio_o[53];
   assign ad9371_reset_b = gpio_o[52];
-  assign gpio_i[59:52] = gpio_o[59:52];
+  assign gpio_i[59:52] = 'h0;
 
   assign gpio_i[51:51] = ad9371_gpint;
 
-  assign gpio_i[50:32] = gpio_o[50:32];
+  assign gpio_i[50:32] = 'h0;
 
   // board stuff
 
@@ -163,9 +163,9 @@ module system_top (
 
   assign ddr3_a[14:12] = 3'd0;
 
-  assign gpio_i[31:27] = gpio_o[31:27];
+  assign gpio_i[31:27] = 'h0;
   assign gpio_i[26:16] = gpio_bd_i;
-  assign gpio_i[15: 0] = gpio_o[15:0];
+  assign gpio_i[15: 0] = 'h0;
 
   assign gpio_bd_o = gpio_o[15:0];
 

projects/adrv9371x/a10soc/system_top.v

@@ -175,10 +175,10 @@ module system_top (
 
   // gpio (ad9371)
 
-  assign gpio_i[63:61] = gpio_o[63:61];
+  assign gpio_i[63:61] = 'h0;
 
   assign dac_fifo_bypass = gpio_o[60];
-  assign gpio_i[60:60] = gpio_o[60];
+  assign gpio_i[60:60] = 'h0;
 
   assign ad9528_reset_b = gpio_o[59];
   assign ad9528_sysref_req = gpio_o[58];
@@ -188,19 +188,19 @@ module system_top (
   assign ad9371_rx2_enable = gpio_o[54];
   assign ad9371_test = gpio_o[53];
   assign ad9371_reset_b = gpio_o[52];
-  assign gpio_i[59:52] = gpio_o[59:52];
+  assign gpio_i[59:52] = 'h0;
 
   assign gpio_i[51:51] = ad9371_gpint;
 
-  assign gpio_i[50:32] = gpio_o[50:32];
+  assign gpio_i[50:32] = 'h0;
   
   // board stuff (max-v-u21)
 
-  assign gpio_i[31:14] = gpio_o[31:14];
+  assign gpio_i[31:14] = 'h0;
   assign gpio_i[13:13] = sys_ddr_cal_success;
   assign gpio_i[12:12] = sys_ddr_cal_fail;
   assign gpio_i[11: 4] = gpio_bd_i;
-  assign gpio_i[ 3: 0] = gpio_o[3:0];
+  assign gpio_i[ 3: 0] = 'h0;
 
   assign gpio_bd_o = gpio_o[3:0];
 

projects/adrv9371x/kcu105/system_top.v

@@ -224,8 +224,8 @@ module system_top (
     .dio_o (gpio_i[16:0]),
     .dio_p (gpio_bd));
 
-  assign gpio_i[31:17] = gpio_o[31:17];
-  assign gpio_i[63:60] = gpio_o[63:60];
+  assign gpio_i[31:17] = 'h0;
+  assign gpio_i[63:60] = 'h0;
 
   system_wrapper i_system_wrapper (
     .dac_fifo_bypass (gpio_o[60]),

projects/adrv9371x/zc706/system_top.v

@@ -233,8 +233,8 @@ module system_top (
     .dio_o (gpio_i[14:0]),
     .dio_p (gpio_bd));
 
-  assign gpio_i[31:15] = gpio_o[31:15];
-  assign gpio_i[63:60] = gpio_o[63:60];
+  assign gpio_i[31:15] = 'h0;
+  assign gpio_i[63:60] = 'h0;
 
   system_wrapper i_system_wrapper (
     .dac_fifo_bypass (gpio_o[60]),

projects/adrv9371x/zcu102/system_top.v

@@ -179,10 +179,10 @@ module system_top (
               ad9371_gpio_16,       // 33
               ad9371_gpio_18}));    // 32
 
-  assign gpio_i[ 7: 0] = gpio_o[ 7: 0];
+  assign gpio_i[ 7: 0] = 'h0;
   assign gpio_i[20: 8] = gpio_bd_i;
-  assign gpio_i[31:21] = gpio_o[31:21];
-  assign gpio_i[94:60] = gpio_o[94:60];
+  assign gpio_i[31:21] = 'h0;
+  assign gpio_i[94:60] = 'h0;
 
   assign gpio_bd_o = gpio_o[ 7: 0];
 

projects/adv7511/zc702/system_top.v

@@ -87,7 +87,7 @@ module system_top (
     .dio_o (gpio_i[15:0]),
     .dio_p ({gpio_bd[7:4], gpio_bd[15:8], gpio_bd[3:0]}));
 
-  assign gpio_i[63:16] = gpio_o[63:16];
+  assign gpio_i[63:16] = 'h0;
 
   system_wrapper i_system_wrapper (
     .ddr_addr (ddr_addr),

projects/adv7511/zc706/system_top.v

@@ -89,7 +89,7 @@ module system_top (
     .dio_o(gpio_i[14:0]),
     .dio_p(gpio_bd));
 
-  assign gpio_i[63:15] = gpio_o[63:15];
+  assign gpio_i[63:15] = 'h0;
 
   system_wrapper i_system_wrapper (
     .ddr_addr (ddr_addr),

projects/adv7511/zed/system_top.v

@@ -95,7 +95,7 @@ module system_top (
   wire    [ 1:0]  iic_mux_sda_o_s;
   wire            iic_mux_sda_t_s;
 
-  assign gpio_i[63:32] = gpio_o[63:32];
+  assign gpio_i[63:32] = 'h0;
 
   // instantiations
 

projects/cn0363/zed/system_top.v

@@ -111,8 +111,8 @@ module system_top (
   assign gain1_o = gpio_o[33];
 
   assign gpio_i[34] = spi_sdi; // Interrupt
-  assign gpio_i[33] = gpio_o[33];
-  assign gpio_i[32] = gpio_o[32];
+  assign gpio_i[33] = 'h0;
+  assign gpio_i[32] = 'h0;
   assign led_clk_o = excitation;
 
   ad_iobuf #(

projects/daq2/a10gx/system_top.v

@@ -155,21 +155,21 @@ module system_top (
 
   // gpio in & out are separate cores
 
-  assign gpio_i[63:44] = gpio_o[63:44];
+  assign gpio_i[63:44] = 'h0;
   assign dac_fifo_bypass = gpio_o[44];
   assign gpio_i[43:43] = trig;
 
-  assign gpio_i[42:40] = gpio_o[42:40];
+  assign gpio_i[42:40] = 'h0;
   assign adc_pd = gpio_o[42];
   assign dac_txen = gpio_o[41];
   assign dac_reset = gpio_o[40];
 
-  assign gpio_i[39:39] = gpio_o[39];
+  assign gpio_i[39:39] = 'h0;
 
-  assign gpio_i[38:38] = gpio_o[38];
+  assign gpio_i[38:38] = 'h0;
   assign clkd_sync = gpio_o[38];
 
-  assign gpio_i[37:37] = gpio_o[37];
+  assign gpio_i[37:37] = 'h0;
   assign gpio_i[36:36] = adc_fdb;
   assign gpio_i[35:35] = adc_fda;
   assign gpio_i[34:34] = dac_irq;
@@ -183,9 +183,9 @@ module system_top (
 
   assign ddr3_a[14:12] = 3'd0;
 
-  assign gpio_i[31:27] = gpio_o[31:27];
+  assign gpio_i[31:27] = 'h0;
   assign gpio_i[26:16] = gpio_bd_i;
-  assign gpio_i[15: 0] = gpio_o[15:0];
+  assign gpio_i[15: 0] = 'h0;
 
   assign gpio_bd_o = gpio_o[15:0];
 

projects/daq2/a10soc/system_top.v

@@ -190,22 +190,22 @@ module system_top (
 
   // gpio in & out are separate cores
 
-  assign gpio_i[63:45] = gpio_o[63:45];
+  assign gpio_i[63:45] = 'h0;
   assign dac_fifo_bypass = gpio_o[44];
-  assign gpio_i[44:44] = gpio_o[44];
+  assign gpio_i[44:44] = 'h0;
   assign gpio_i[43:43] = trig;
 
-  assign gpio_i[42:40] = gpio_o[42:40];
+  assign gpio_i[42:40] = 'h0;
   assign adc_pd = gpio_o[42];
   assign dac_txen = gpio_o[41];
   assign dac_reset = gpio_o[40];
 
-  assign gpio_i[39:39] = gpio_o[39];
+  assign gpio_i[39:39] = 'h0;
 
-  assign gpio_i[38:38] = gpio_o[38];
+  assign gpio_i[38:38] = 'h0;
   assign clkd_sync = gpio_o[38];
 
-  assign gpio_i[37:37] = gpio_o[37];
+  assign gpio_i[37:37] = 'h0;
   assign gpio_i[36:36] = adc_fdb;
   assign gpio_i[35:35] = adc_fda;
   assign gpio_i[34:34] = dac_irq;
@@ -213,9 +213,9 @@ module system_top (
  
   // board stuff (max-v-u21)
 
-  assign gpio_i[31:12] = gpio_o[31:12];
+  assign gpio_i[31:12] = 'h0;
   assign gpio_i[11: 4] = gpio_bd_i;
-  assign gpio_i[ 3: 0] = gpio_o[3:0];
+  assign gpio_i[ 3: 0] = 'h0;
 
   assign gpio_bd_o = gpio_o[3:0];
 

projects/daq2/kc705/system_top.v

@@ -228,10 +228,10 @@ module system_top (
     .dio_o (gpio_i[16:0]),
     .dio_p (gpio_bd));
 
-  assign gpio_i[63:44] = gpio_o[63:44];
-  assign gpio_i[39] = gpio_o[39];
-  assign gpio_i[37] = gpio_o[37];
-  assign gpio_i[31:17] = gpio_o[31:17];
+  assign gpio_i[63:44] = 'h0;
+  assign gpio_i[39] = 'h0;
+  assign gpio_i[37] = 'h0;
+  assign gpio_i[31:17] = 'h0;
 
   system_wrapper i_system_wrapper (
     .ddr3_addr (ddr3_addr),

projects/daq2/kcu105/system_top.v

@@ -210,10 +210,10 @@ module system_top (
     .dio_o (gpio_i[16:0]),
     .dio_p (gpio_bd));
 
-  assign gpio_i[63:44] = gpio_o[63:44];
-  assign gpio_i[39] = gpio_o[39];
-  assign gpio_i[37] = gpio_o[37];
-  assign gpio_i[31:17] = gpio_o[31:17];
+  assign gpio_i[63:44] = 'h0;
+  assign gpio_i[39] = 'h0;
+  assign gpio_i[37] = 'h0;
+  assign gpio_i[31:17] = 'h0;
 
   system_wrapper i_system_wrapper (
     .c0_ddr4_act_n (ddr4_act_n),

projects/daq2/vc707/system_top.v

@@ -222,10 +222,10 @@ module system_top (
     .dio_o (gpio_i[20:0]),
     .dio_p (gpio_bd));
 
-  assign gpio_i[63:44] = gpio_o[63:44];
-  assign gpio_i[39] = gpio_o[39];
-  assign gpio_i[37] = gpio_o[37];
-  assign gpio_i[31:21] = gpio_o[31:21];
+  assign gpio_i[63:44] = 'h0;
+  assign gpio_i[39] = 'h0;
+  assign gpio_i[37] = 'h0;
+  assign gpio_i[31:21] = 'h0;
 
   system_wrapper i_system_wrapper (
     .ddr3_addr (ddr3_addr),

projects/daq2/zc706/system_top.v

@@ -229,10 +229,10 @@ module system_top (
     .dio_o (gpio_i[14:0]),
     .dio_p (gpio_bd));
 
-  assign gpio_i[63:44] = gpio_o[63:44];
-  assign gpio_i[39] = gpio_o[39];
-  assign gpio_i[37] = gpio_o[37];
-  assign gpio_i[31:15] = gpio_o[31:15];
+  assign gpio_i[63:44] = 'h0;
+  assign gpio_i[39] = 'h0;
+  assign gpio_i[37] = 'h0;
+  assign gpio_i[31:15] = 'h0;
 
   system_wrapper i_system_wrapper (
     .ddr3_addr (ddr3_addr),

projects/daq2/zcu102/system_top.v

@@ -154,16 +154,16 @@ module system_top (
   assign clkd_sync = gpio_o[38];
   assign gpio_bd_o = gpio_o[7:0];
 
-  assign gpio_i[94:44] = gpio_o[94:44];
+  assign gpio_i[94:44] = 'h0;
   assign gpio_i[43:43] = trig;
-  assign gpio_i[42:37] = gpio_o[42:37];
+  assign gpio_i[42:37] = 'h0;
   assign gpio_i[36:36] = adc_fdb;
   assign gpio_i[35:35] = adc_fda;
   assign gpio_i[34:34] = dac_irq;
   assign gpio_i[33:32] = clkd_status;
-  assign gpio_i[31:21] = gpio_o[31:21];
+  assign gpio_i[31:21] = 'h0;
   assign gpio_i[20: 8] = gpio_bd_i;
-  assign gpio_i[ 7: 0] = gpio_o[7:0];
+  assign gpio_i[ 7: 0] = 'h0;
 
   system_wrapper i_system_wrapper (
     .gpio_i (gpio_i),

projects/daq3/a10gx/system_top.v

@@ -149,12 +149,12 @@ module system_top (
 
   // gpio in & out are separate cores
 
-  assign gpio_i[63:40] = gpio_o[63:40];
+  assign gpio_i[63:40] = 'h0;
   assign dac_fifo_bypass = gpio_o[41];
   assign sysref = gpio_o[40];
   assign gpio_i[39:39] = trig;
 
-  assign gpio_i[38:37] = gpio_o[38:37];
+  assign gpio_i[38:37] = 'h0;
   assign adc_pd = gpio_o[38];
   assign dac_txen = gpio_o[37];
 
@@ -171,9 +171,9 @@ module system_top (
 
   assign ddr3_a[14:12] = 3'd0;
 
-  assign gpio_i[31:27] = gpio_o[31:27];
+  assign gpio_i[31:27] = 'h0;
   assign gpio_i[26:16] = gpio_bd_i;
-  assign gpio_i[15: 0] = gpio_o[15:0];
+  assign gpio_i[15: 0] = 'h0;
 
   assign gpio_bd_o = gpio_o[15:0];
 

projects/daq3/kcu105/system_top.v

@@ -213,8 +213,8 @@ module system_top (
     .dio_o (gpio_i[16:0]),
     .dio_p (gpio_bd));
 
-  assign gpio_i[63:40] = gpio_o[63:40];
-  assign gpio_i[31:17] = gpio_o[31:17];
+  assign gpio_i[63:40] = 'h0;
+  assign gpio_i[31:17] = 'h0;
 
   system_wrapper i_system_wrapper (
     .c0_ddr4_act_n (ddr4_act_n),

projects/daq3/zc706/system_top.v

@@ -233,8 +233,8 @@ module system_top (
     .dio_o (gpio_i[14:0]),
     .dio_p (gpio_bd));
 
-  assign gpio_i[63:40] = gpio_o[63:40];
-  assign gpio_i[31:15] = gpio_o[31:15];
+  assign gpio_i[63:40] = 'h0;
+  assign gpio_i[31:15] = 'h0;
 
   system_wrapper i_system_wrapper (
     .ddr3_addr (ddr3_addr),

projects/daq3/zcu102/system_top.v

@@ -159,16 +159,16 @@ module system_top (
   assign clkd_sync = gpio_o[38];
   assign gpio_bd_o = gpio_o[7:0];
 
-  assign gpio_i[94:44] = gpio_o[94:44];
+  assign gpio_i[94:44] = 'h0;
   assign gpio_i[43:43] = trig;
-  assign gpio_i[42:37] = gpio_o[42:37];
+  assign gpio_i[42:37] = 'h0;
   assign gpio_i[36:36] = adc_fdb;
   assign gpio_i[35:35] = adc_fda;
   assign gpio_i[34:34] = dac_irq;
   assign gpio_i[33:32] = clkd_status;
-  assign gpio_i[31:21] = gpio_o[31:21];
+  assign gpio_i[31:21] = 'h0;
   assign gpio_i[20: 8] = gpio_bd_i;
-  assign gpio_i[ 7: 0] = gpio_o[7:0];
+  assign gpio_i[ 7: 0] = 'h0;
 
   system_wrapper i_system_wrapper (
     .gpio_i (gpio_i),

projects/fmcadc2/vc707/system_top.v

@@ -172,8 +172,8 @@ module system_top (
     .dio_o (gpio_i[20:0]),
     .dio_p (gpio_bd));
 
-  assign gpio_i[63:34] = gpio_o[63:34];
-  assign gpio_i[31:21] = gpio_o[31:21];
+  assign gpio_i[63:34] = 'h0;
+  assign gpio_i[31:21] = 'h0;
 
   ad_sysref_gen i_sysref (
     .core_clk (rx_clk),

projects/fmcadc2/zc706/system_top.v

@@ -180,8 +180,8 @@ module system_top (
     .dio_o (gpio_i[14:0]),
     .dio_p (gpio_bd));
 
-  assign gpio_i[63:34] = gpio_o[63:34];
-  assign gpio_i[31:15] = gpio_o[31:15];
+  assign gpio_i[63:34] = 'h0;
+  assign gpio_i[31:15] = 'h0;
 
   ad_sysref_gen i_sysref (
     .core_clk (rx_clk),

projects/fmcadc4/zc706/system_top.v

@@ -197,8 +197,8 @@ module system_top (
     .dio_o (gpio_i[14:0]),
     .dio_p (gpio_bd));
 
-  assign gpio_i[63:38] = gpio_o[63:38];
-  assign gpio_i[31:15] = gpio_o[31:15];
+  assign gpio_i[63:38] = 'h0;
+  assign gpio_i[31:15] = 'h0;
 
   system_wrapper i_system_wrapper (
     .ddr3_addr (ddr3_addr),

projects/fmcjesdadc1/kc705/system_top.v

@@ -134,8 +134,8 @@ module system_top (
     .dio_o (gpio_i[16:0]),
     .dio_p (gpio_bd));
 
-  assign gpio_i[63:32] = gpio_o[63:32];
-  assign gpio_i[31:17] = gpio_o[31:17];
+  assign gpio_i[63:32] = 'h0;
+  assign gpio_i[31:17] = 'h0;
 
   fmcjesdadc1_spi i_fmcjesdadc1_spi (
     .spi_csn (spi_csn[0]),

projects/fmcjesdadc1/vc707/system_top.v

@@ -131,8 +131,8 @@ module system_top (
     .dio_o (gpio_i[20:0]),
     .dio_p (gpio_bd));
 
-  assign gpio_i[63:32] = gpio_o[63:32];
-  assign gpio_i[31:21] = gpio_o[31:21];
+  assign gpio_i[63:32] = 'h0;
+  assign gpio_i[31:21] = 'h0;
 
   fmcjesdadc1_spi i_fmcjesdadc1_spi (
     .spi_csn (spi_csn_0),

projects/fmcjesdadc1/zc706/system_top.v

@@ -120,8 +120,8 @@ module system_top (
     .dio_o (gpio_i[14:0]),
     .dio_p (gpio_bd));
 
-  assign gpio_i[63:32] = gpio_o[63:32];
-  assign gpio_i[31:15] = gpio_o[31:15];
+  assign gpio_i[63:32] = 'h0;
+  assign gpio_i[31:15] = 'h0;
 
   assign spi_adc_clk = spi_clk;
   assign spi_clk_clk = spi_clk;

projects/fmcomms2/kc705/system_top.v

@@ -158,8 +158,8 @@ module system_top (
     .dio_o (gpio_i[16:0]),
     .dio_p (gpio_bd));
 
-  assign gpio_i[63:47] = gpio_o[63:47];
-  assign gpio_i[31:17] = gpio_o[31:17];
+  assign gpio_i[63:47] = 'h0;
+  assign gpio_i[31:17] = 'h0;
 
   system_wrapper i_system_wrapper (
     .ddr3_addr (ddr3_addr),

projects/fmcomms2/kcu105/system_top.v

@@ -130,9 +130,9 @@ module system_top (
     .dio_o (gpio_i[16:0]),
     .dio_p (gpio_bd));
 
-  assign gpio_i[63:40] = gpio_o[63:40];
+  assign gpio_i[63:40] = 'h0;
   assign gpio_i[39:32] = gpio_status;
-  assign gpio_i[31:17] = gpio_0[31:17];
+  assign gpio_i[31:17] = 'h0;
 
   system_wrapper i_system_wrapper (
     .c0_ddr4_act_n (ddr4_act_n),

projects/fmcomms2/vc707/system_top.v

@@ -148,8 +148,8 @@ module system_top (
     .dio_o (gpio_i[20:0]),
     .dio_p (gpio_bd));
 
-  assign gpio_i[63:47] = gpio_o[63:47];
-  assign gpio_i[31:21] = gpio_o[31:21];
+  assign gpio_i[63:47] = 'h0;
+  assign gpio_i[31:21] = 'h0;
 
   system_wrapper i_system_wrapper (
     .ddr3_addr (ddr3_addr),

projects/fmcomms2/zc702/system_top.v

@@ -137,10 +137,10 @@ module system_top (
     .dio_o ({gpio_i[15:12], gpio_i[7:0]}),
     .dio_p ({gpio_bd[7:4], gpio_bd[11:8], gpio_bd[3:0]}));
 
-  assign gpio_i[63:51] = gpio_o[63:51];
-  assign gpio_i[48:47] = gpio_o[48:47];
-  assign gpio_i[31:16] = gpio_o[31:16];
-  assign gpio_i[11: 8] = gpio_o[11 :8];
+  assign gpio_i[63:51] = 'h0;
+  assign gpio_i[48:47] = 'h0;
+  assign gpio_i[31:16] = 'h0;
+  assign gpio_i[11: 8] = 'h0;
 
   system_wrapper i_system_wrapper (
     .ddr_addr (ddr_addr),

projects/fmcomms2/zc706/system_top.v

@@ -159,9 +159,9 @@ module system_top (
     .dio_o (gpio_i[14:0]),
     .dio_p (gpio_bd));
 
-  assign gpio_i[63:51] = gpio_o[63:51];
-  assign gpio_i[48:47] = gpio_o[48:47];
-  assign gpio_i[31:15] = gpio_o[31:15];
+  assign gpio_i[63:51] = 'h0;
+  assign gpio_i[48:47] = 'h0;
+  assign gpio_i[31:15] = 'h0;
 
   ad_iobuf #(.DATA_WIDTH(1)) i_iobuf_tdd_sync (
     .dio_t (tdd_sync_t),

projects/fmcomms2/zcu102/system_top.v

@@ -81,9 +81,9 @@ module system_top (
   assign gpio_ctl = gpio_o[43:40];
   assign gpio_bd_o = gpio_o[20:13];
 
-  assign gpio_i[95:40] = gpio_o[95:40];
+  assign gpio_i[95:40] = 'h0;
   assign gpio_i[39:32] = gpio_status;
-  assign gpio_i[31:13] = gpio_o[31:13];
+  assign gpio_i[31:13] = 'h0;
   assign gpio_i[12: 0] = gpio_bd_i;
 
   assign spi_csn = spi0_csn[0];

projects/fmcomms2/zed/system_top.v

@@ -144,8 +144,8 @@ module system_top (
               gpio_status,
               gpio_bd}));
 
-  assign gpio_i[63:51] = gpio_o[63:51];
-  assign gpio_i[48:47] = gpio_o[48:47];
+  assign gpio_i[63:51] = 'h0;
+  assign gpio_i[48:47] = 'h0;
 
    ad_iobuf #(.DATA_WIDTH(2)) i_iobuf_iic_scl (
     .dio_t ({iic_mux_scl_t_s,iic_mux_scl_t_s}),

projects/fmcomms5/zc702/system_top.v

@@ -217,8 +217,8 @@ module system_top (
   assign spi_clk = spi0_clk;
   assign spi_mosi = spi0_mosi;
   assign spi0_miso = spi_miso;
-  assign gpio_i[63:60] = gpio_o[63:60];
-  assign gpio_i[45:44] = gpio_o[45:44];
+  assign gpio_i[63:60] = 'h0;
+  assign gpio_i[45:44] = 'h0;
 
   system_wrapper i_system_wrapper (
     .ddr_addr (ddr_addr),

projects/fmcomms5/zc706/system_top.v

@@ -212,9 +212,9 @@ module system_top (
   assign spi_clk = spi0_clk;
   assign spi_mosi = spi0_mosi;
   assign spi0_miso = spi_miso;
-  assign gpio_i[63:60] = gpio_o[63:60];
-  assign gpio_i[45:44] = gpio_o[45:44];
-  assign gpio_i[15] = gpio_o[15];
+  assign gpio_i[63:60] = 'h0;
+  assign gpio_i[45:44] = 'h0;
+  assign gpio_i[15] = 'h0;
 
   system_wrapper i_system_wrapper (
     .ddr_addr (ddr_addr),

projects/fmcomms5/zcu102/system_top.v

@@ -167,12 +167,12 @@ module system_top (
   assign gpio_ctl_0 = gpio_o[41:38];
   assign gpio_bd_o = gpio_o[20:13];
   assign gpio_i[12: 0] = gpio_bd_i;
-  assign gpio_i[21:13] = gpio_o[21:13];
+  assign gpio_i[21:13] = 'h0;
   assign gpio_i[29:22] = gpio_status_0;
   assign gpio_i[37:30] = gpio_status_1;
-  assign gpio_i[63:38] = gpio_o[63:38];
+  assign gpio_i[63:38] = 'h0;
   assign gpio_i[64] = gpio_ad5355_lock;
-  assign gpio_i[94:65] = gpio_o[94:65];
+  assign gpio_i[94:65] = 'h0;
 
   assign spi_ad9361_0 = spi0_csn[0];
   assign spi_ad9361_1 = spi0_csn[1];

projects/imageon/zed/system_top.v

@@ -100,7 +100,7 @@ module system_top (
   wire    [ 1:0]  iic_mux_sda_o_s;
   wire            iic_mux_sda_t_s;
 
-  assign gpio_i[63:34] = gpio_o[63:34];
+  assign gpio_i[63:34] = 'h0;
 
   // instantiations
 

projects/motcon2_fmc/zed/system_top.v

@@ -174,8 +174,8 @@ module system_top (
   assign pwm_m2_dh_o    = 1'b0;
   assign pwm_m2_dl_o    = 1'b0;
 
-  assign gpio_i[63:35]  = gpio_o[63:35];
-  assign gpio_i[32]     = gpio_o[32];
+  assign gpio_i[63:35]  = 'h0;
+  assign gpio_i[32]     = 'h0;
 
   // instantiations
 

projects/pluto/system_top.v

@@ -92,7 +92,7 @@ module system_top (
   wire    [16:0]  gpio_o;
   wire    [16:0]  gpio_t;
 
-  assign gpio_i[16:15] = gpio_o[16:15];
+  assign gpio_i[16:15] = 'h0;
   // instantiations
 
   ad_iobuf #(.DATA_WIDTH(15)) i_iobuf (

projects/sidekiqz2/system_top.v

@@ -102,7 +102,7 @@ module system_top (
               gpio_ctl,           // 11: 8
               gpio_status}));     //  7: 0
 
-  assign gpio_i[18:17] = gpio_o[18:17];
+  assign gpio_i[18:17] = 'h0;
 
   system_wrapper i_system_wrapper (
     .ddr_addr (ddr_addr),