diff --git a/fuzzers/050-pip-seed/generate.py b/fuzzers/050-pip-seed/generate.py
index 0c4d3fbf..06bcdc92 100644
--- a/fuzzers/050-pip-seed/generate.py
+++ b/fuzzers/050-pip-seed/generate.py
@@ -16,6 +16,10 @@ print("Loading tags from design.txt.")
 with open("design.txt", "r") as f:
     for line in f:
         tile, pip, src, dst, pnum, pdir = line.split()
+
+        if not tile.startswith('INT_'):
+            continue
+
         _, pip = pip.split(".")
         _, src = src.split("/")
         _, dst = dst.split("/")
diff --git a/fuzzers/050-pip-seed/generate.tcl b/fuzzers/050-pip-seed/generate.tcl
index 391fafed..d63927ee 100644
--- a/fuzzers/050-pip-seed/generate.tcl
+++ b/fuzzers/050-pip-seed/generate.tcl
@@ -34,29 +34,5 @@ route_design
 
 write_checkpoint -force design.dcp
 
-proc write_txtdata {filename} {
-    puts "FUZ([pwd]): Writing $filename."
-    set fp [open $filename w]
-    set all_pips [lsort -unique [get_pips -of_objects [get_nets -hierarchical]]]
-    # FIXME: getting IOB. Don't think this works correctly
-    set tiles [get_tiles [regsub -all {CLBL[LM]} [get_tiles -of_objects [get_sites -of_objects [get_pblocks roi]]] INT]]
-    set ntiles [llength $tiles]
-    set tilei 0
-    foreach tile $tiles {
-        incr tilei
-        if {($tilei % 10) == 0 } {
-            puts "FUZ([pwd]): Dumping pips from tile $tile ($tilei / $ntiles)"
-        }
-        foreach pip [filter $all_pips "TILE == $tile"] {
-            set src_wire [get_wires -uphill -of_objects $pip]
-            set dst_wire [get_wires -downhill -of_objects $pip]
-            set num_pips [llength [get_nodes -uphill -of_objects [get_nodes -of_objects $dst_wire]]]
-            set dir_prop [get_property IS_DIRECTIONAL $pip]
-            puts $fp "$tile $pip $src_wire $dst_wire $num_pips $dir_prop"
-        }
-    }
-    close $fp
-}
-
 write_bitstream -force design.bit
-write_txtdata design.txt
+write_pip_txtdata design.txt
diff --git a/fuzzers/051-pip-imuxlout-bypalts/generate.sh b/fuzzers/051-pip-imuxlout-bypalts/generate.sh
deleted file mode 100644
index d6bf8b49..00000000
--- a/fuzzers/051-pip-imuxlout-bypalts/generate.sh
+++ /dev/null
@@ -1,9 +0,0 @@
-#!/bin/bash
-
-source ${XRAY_GENHEADER}
-
-${XRAY_VIVADO} -mode batch -source ../generate.tcl
-
-${XRAY_BITREAD} -F $XRAY_ROI_FRAMES -o design.bits -z -y design.bit
-python3 ../generate.py
-
diff --git a/fuzzers/051-pip-imuxlout-bypalts/generate.tcl b/fuzzers/051-pip-imuxlout-bypalts/generate.tcl
index d35bb827..64f2865d 100644
--- a/fuzzers/051-pip-imuxlout-bypalts/generate.tcl
+++ b/fuzzers/051-pip-imuxlout-bypalts/generate.tcl
@@ -141,25 +141,6 @@ for {set idx 0} {$idx < [llength $todo_lines]} {incr idx} {
     }
 }
 
-proc write_txtdata {filename tiles} {
-    puts "Writing $filename."
-    set fp [open $filename w]
-    set all_pips [lsort -unique [get_pips -of_objects [get_nets -hierarchical]]]
-    if {$all_pips != {}} {
-        puts "Dumping pips."
-        foreach tile $tiles {
-            foreach pip [filter $all_pips "TILE == $tile"] {
-                set src_wire [get_wires -uphill -of_objects $pip]
-                set dst_wire [get_wires -downhill -of_objects $pip]
-                set num_pips [llength [get_nodes -uphill -of_objects [get_nodes -of_objects $dst_wire]]]
-                set dir_prop [get_property IS_DIRECTIONAL $pip]
-                puts $fp "$tile $pip $src_wire $dst_wire $num_pips $dir_prop"
-            }
-        }
-    }
-    close $fp
-}
-
 route_design
 write_checkpoint -force design.dcp
 write_bitstream -force design.bit
@@ -172,4 +153,4 @@ if {[info exists ::env(QUICK) ] && "$::env(QUICK)" == "Y"} {
     set tiles [get_tiles [regsub -all {CLBL[LM]} [get_tiles -of_objects [get_sites -of_objects [get_pblocks roi]]] INT]]
 }
 
-write_txtdata design.txt $tiles
+write_pip_txtdata design.txt
diff --git a/fuzzers/052-pip-clkin/generate.py b/fuzzers/052-pip-clkin/generate.py
index b42f1f80..3fe41e6f 100644
--- a/fuzzers/052-pip-clkin/generate.py
+++ b/fuzzers/052-pip-clkin/generate.py
@@ -1,6 +1,6 @@
 #!/usr/bin/env python3
 
-import os, re
+import re
 
 from prjxray.segmaker import Segmaker
 
@@ -14,6 +14,10 @@ print("Loading tags from design.txt.")
 with open("design.txt", "r") as f:
     for line in f:
         tile, pip, src, dst, pnum, pdir = line.split()
+
+        if not tile.startswith('INT_'):
+            continue
+
         _, pip = pip.split(".")
         _, src = src.split("/")
         _, dst = dst.split("/")
diff --git a/fuzzers/052-pip-clkin/generate.sh b/fuzzers/052-pip-clkin/generate.sh
deleted file mode 100644
index d6bf8b49..00000000
--- a/fuzzers/052-pip-clkin/generate.sh
+++ /dev/null
@@ -1,9 +0,0 @@
-#!/bin/bash
-
-source ${XRAY_GENHEADER}
-
-${XRAY_VIVADO} -mode batch -source ../generate.tcl
-
-${XRAY_BITREAD} -F $XRAY_ROI_FRAMES -o design.bits -z -y design.bit
-python3 ../generate.py
-
diff --git a/fuzzers/052-pip-clkin/generate.tcl b/fuzzers/052-pip-clkin/generate.tcl
index 8ffbaf76..fbca2ec0 100644
--- a/fuzzers/052-pip-clkin/generate.tcl
+++ b/fuzzers/052-pip-clkin/generate.tcl
@@ -96,26 +96,7 @@ for {set idx 0} {$idx < [llength $todo_lines]} {incr idx} {
     }
 }
 
-proc write_txtdata {filename} {
-    puts "Writing $filename."
-    set fp [open $filename w]
-    set all_pips [lsort -unique [get_pips -of_objects [get_nets -hierarchical]]]
-    if {$all_pips != {}} {
-        puts "Dumping pips."
-        foreach tile [get_tiles [regsub -all {CLBL[LM]} [get_tiles -of_objects [get_sites -of_objects [get_pblocks roi]]] INT]] {
-            foreach pip [filter $all_pips "TILE == $tile"] {
-                set src_wire [get_wires -uphill -of_objects $pip]
-                set dst_wire [get_wires -downhill -of_objects $pip]
-                set num_pips [llength [get_nodes -uphill -of_objects [get_nodes -of_objects $dst_wire]]]
-                set dir_prop [get_property IS_DIRECTIONAL $pip]
-                puts $fp "$tile $pip $src_wire $dst_wire $num_pips $dir_prop"
-            }
-        }
-    }
-    close $fp
-}
-
 route_design
 write_checkpoint -force design.dcp
 write_bitstream -force design.bit
-write_txtdata design.txt
+write_pip_txtdata design.txt
diff --git a/fuzzers/053-pip-ctrlin/generate.py b/fuzzers/053-pip-ctrlin/generate.py
index c101ef32..7dae573b 100644
--- a/fuzzers/053-pip-ctrlin/generate.py
+++ b/fuzzers/053-pip-ctrlin/generate.py
@@ -1,6 +1,6 @@
 #!/usr/bin/env python3
 
-import os, re
+import re
 
 from prjxray.segmaker import Segmaker
 
@@ -14,6 +14,10 @@ print("Loading tags from design.txt.")
 with open("design.txt", "r") as f:
     for line in f:
         tile, pip, src, dst, pnum, pdir = line.split()
+
+        if not tile.startswith('INT_'):
+            continue
+
         _, pip = pip.split(".")
         _, src = src.split("/")
         _, dst = dst.split("/")
diff --git a/fuzzers/053-pip-ctrlin/generate.sh b/fuzzers/053-pip-ctrlin/generate.sh
deleted file mode 100644
index d6bf8b49..00000000
--- a/fuzzers/053-pip-ctrlin/generate.sh
+++ /dev/null
@@ -1,9 +0,0 @@
-#!/bin/bash
-
-source ${XRAY_GENHEADER}
-
-${XRAY_VIVADO} -mode batch -source ../generate.tcl
-
-${XRAY_BITREAD} -F $XRAY_ROI_FRAMES -o design.bits -z -y design.bit
-python3 ../generate.py
-
diff --git a/fuzzers/053-pip-ctrlin/generate.tcl b/fuzzers/053-pip-ctrlin/generate.tcl
index cd521eed..66f3f5f2 100644
--- a/fuzzers/053-pip-ctrlin/generate.tcl
+++ b/fuzzers/053-pip-ctrlin/generate.tcl
@@ -61,26 +61,7 @@ for {set idx 0} {$idx < [llength $todo_lines]} {incr idx} {
     route_via $mynet "$tile/$src_wire $tile/$dst_wire"
 }
 
-proc write_txtdata {filename} {
-    puts "Writing $filename."
-    set fp [open $filename w]
-    set all_pips [lsort -unique [get_pips -of_objects [get_nets -hierarchical]]]
-    if {$all_pips != {}} {
-        puts "Dumping pips."
-        foreach tile [get_tiles [regsub -all {CLBL[LM]} [get_tiles -of_objects [get_sites -of_objects [get_pblocks roi]]] INT]] {
-            foreach pip [filter $all_pips "TILE == $tile"] {
-                set src_wire [get_wires -uphill -of_objects $pip]
-                set dst_wire [get_wires -downhill -of_objects $pip]
-                set num_pips [llength [get_nodes -uphill -of_objects [get_nodes -of_objects $dst_wire]]]
-                set dir_prop [get_property IS_DIRECTIONAL $pip]
-                puts $fp "$tile $pip $src_wire $dst_wire $num_pips $dir_prop"
-            }
-        }
-    }
-    close $fp
-}
-
 route_design
 write_checkpoint -force design.dcp
 write_bitstream -force design.bit
-write_txtdata design.txt
+write_pip_txtdata design.txt
diff --git a/fuzzers/055-pip-gnd/generate.py b/fuzzers/055-pip-gnd/generate.py
index fd499ecd..adc9946a 100644
--- a/fuzzers/055-pip-gnd/generate.py
+++ b/fuzzers/055-pip-gnd/generate.py
@@ -16,6 +16,10 @@ print("Loading tags from design.txt.")
 with open("design.txt", "r") as f:
     for line in f:
         tile, pip, src, dst, pnum, pdir = line.split()
+
+        if not tile.startswith('INT_'):
+            continue
+
         _, pip = pip.split(".")
         _, src = src.split("/")
         _, dst = dst.split("/")
diff --git a/fuzzers/055-pip-gnd/generate.tcl b/fuzzers/055-pip-gnd/generate.tcl
index a0b1ee42..136ca2c8 100644
--- a/fuzzers/055-pip-gnd/generate.tcl
+++ b/fuzzers/055-pip-gnd/generate.tcl
@@ -62,26 +62,7 @@ for {set idx 0} {$idx < [llength $todo_lines]} {incr idx} {
     route_via $mynet "$tile/$src_wire $tile/$dst_wire"
 }
 
-proc write_txtdata {filename} {
-    puts "Writing $filename."
-    set fp [open $filename w]
-    set all_pips [lsort -unique [get_pips -of_objects [get_nets -hierarchical]]]
-    if {$all_pips != {}} {
-        puts "Dumping pips."
-        foreach tile [get_tiles [regsub -all {CLBL[LM]} [get_tiles -of_objects [get_sites -of_objects [get_pblocks roi]]] INT]] {
-            foreach pip [filter $all_pips "TILE == $tile"] {
-                set src_wire [get_wires -uphill -of_objects $pip]
-                set dst_wire [get_wires -downhill -of_objects $pip]
-                set num_pips [llength [get_nodes -uphill -of_objects [get_nodes -of_objects $dst_wire]]]
-                set dir_prop [get_property IS_DIRECTIONAL $pip]
-                puts $fp "$tile $pip $src_wire $dst_wire $num_pips $dir_prop"
-            }
-        }
-    }
-    close $fp
-}
-
 route_design
 write_checkpoint -force design.dcp
 write_bitstream -force design.bit
-write_txtdata design.txt
+write_pip_txtdata design.txt
diff --git a/fuzzers/056-pip-rem/generate.sh b/fuzzers/056-pip-rem/generate.sh
deleted file mode 100644
index 83dbeca4..00000000
--- a/fuzzers/056-pip-rem/generate.sh
+++ /dev/null
@@ -1,10 +0,0 @@
-#!/bin/bash
-
-FUZDIR=$PWD
-source ${XRAY_GENHEADER}
-
-${XRAY_VIVADO} -mode batch -source $FUZDIR/generate.tcl
-
-${XRAY_BITREAD} -F $XRAY_ROI_FRAMES -o design.bits -z -y design.bit
-python3 $FUZDIR/generate.py
-
diff --git a/fuzzers/056-pip-rem/generate.tcl b/fuzzers/056-pip-rem/generate.tcl
index 05aba756..0539ef48 100644
--- a/fuzzers/056-pip-rem/generate.tcl
+++ b/fuzzers/056-pip-rem/generate.tcl
@@ -105,25 +105,6 @@ proc route_todo {} {
     }
 }
 
-proc write_txtdata {filename} {
-    puts "Writing $filename."
-    set fp [open $filename w]
-    set all_pips [lsort -unique [get_pips -of_objects [get_nets -hierarchical]]]
-    if {$all_pips != {}} {
-        puts "Dumping pips."
-        foreach tile [get_tiles [regsub -all {CLBL[LM]} [get_tiles -of_objects [get_sites -of_objects [get_pblocks roi]]] INT]] {
-            foreach pip [filter $all_pips "TILE == $tile"] {
-                set src_wire [get_wires -uphill -of_objects $pip]
-                set dst_wire [get_wires -downhill -of_objects $pip]
-                set num_pips [llength [get_nodes -uphill -of_objects [get_nodes -of_objects $dst_wire]]]
-                set dir_prop [get_property IS_DIRECTIONAL $pip]
-                puts $fp "$tile $pip $src_wire $dst_wire $num_pips $dir_prop"
-            }
-        }
-    }
-    close $fp
-}
-
 proc run {} {
     build_basic
     route_todo
@@ -131,7 +112,7 @@ proc run {} {
 
     write_checkpoint -force design.dcp
     write_bitstream -force design.bit
-    write_txtdata design.txt
+    write_pip_txtdata design.txt
 }
 
 run
diff --git a/fuzzers/057-pip-bi/Makefile b/fuzzers/057-pip-bi/Makefile
index 1664b3ad..0052906d 100644
--- a/fuzzers/057-pip-bi/Makefile
+++ b/fuzzers/057-pip-bi/Makefile
@@ -1,5 +1,4 @@
 MAKETODO_FLAGS=--re ".*"
-TODO_N=5
 export FUZDIR=$(shell pwd)
 PIPLIST_TCL=$(FUZDIR)/bipiplist.tcl
 PIP_TYPE?=bipips_int
diff --git a/fuzzers/057-pip-bi/generate.sh b/fuzzers/057-pip-bi/generate.sh
deleted file mode 100644
index 08385103..00000000
--- a/fuzzers/057-pip-bi/generate.sh
+++ /dev/null
@@ -1,11 +0,0 @@
-#!/bin/bash
-
-source ${XRAY_GENHEADER}
-
-while ! ${XRAY_VIVADO} -mode batch -source ../generate.tcl; do
-	rm -rf design*
-done
-
-${XRAY_BITREAD} -F $XRAY_ROI_FRAMES -o design.bits -z -y design.bit
-python3 ../generate.py
-
diff --git a/fuzzers/060-bram-cascades/generate.sh b/fuzzers/060-bram-cascades/generate.sh
deleted file mode 100644
index c83a1b3c..00000000
--- a/fuzzers/060-bram-cascades/generate.sh
+++ /dev/null
@@ -1,14 +0,0 @@
-#!/bin/bash
-
-set -ex
-
-FUZDIR=$PWD
-source ${XRAY_GENHEADER}
-
-echo '`define SEED 32'"'h$(echo $1 | md5sum | cut -c1-8)" > setseed.vh
-
-${XRAY_VIVADO} -mode batch -source $FUZDIR/generate.tcl | tee vivado_stdout.log | grep "FUZ[^:]\+:"
-
-${XRAY_BITREAD} -F $XRAY_ROI_FRAMES -o design.bits -z -y design.bit
-python3 $FUZDIR/generate.py
-
diff --git a/fuzzers/int_generate.py b/fuzzers/int_generate.py
index d073b949..b19c3ec4 100644
--- a/fuzzers/int_generate.py
+++ b/fuzzers/int_generate.py
@@ -41,6 +41,10 @@ print("Loading tags from %s." % args.design)
 with open(args.design, "r") as f:
     for line in f:
         tile, pip, src, dst, pnum, pdir = line.split()
+
+        if not tile.startswith('INT_'):
+            continue
+
         _, pip = pip.split(".")
         _, src = src.split("/")
         _, dst = dst.split("/")
diff --git a/utils/utils.tcl b/utils/utils.tcl
index fd98035c..cead2bab 100644
--- a/utils/utils.tcl
+++ b/utils/utils.tcl
@@ -108,3 +108,26 @@ proc lintersect {lst1 lst2} {
 proc putl {lst} {
     foreach line $lst {puts $line}
 }
+
+proc write_pip_txtdata {filename} {
+    puts "FUZ([pwd]): Writing $filename."
+    set fp [open $filename w]
+    set nets [get_nets -hierarchical]
+    set nnets [llength $nets]
+    set neti 0
+    foreach net $nets {
+        incr neti
+        if {($neti % 100) == 0 } {
+            puts "FUZ([pwd]): Dumping pips from net $net ($neti / $nnets)"
+        }
+        foreach pip [get_pips -of_objects $net] {
+            set tile [get_tiles -of_objects $pip]
+            set src_wire [get_wires -uphill -of_objects $pip]
+            set dst_wire [get_wires -downhill -of_objects $pip]
+            set num_pips [llength [get_nodes -uphill -of_objects [get_nodes -of_objects $dst_wire]]]
+            set dir_prop [get_property IS_DIRECTIONAL $pip]
+            puts $fp "$tile $pip $src_wire $dst_wire $num_pips $dir_prop"
+        }
+    }
+    close $fp
+}