vlsi:icc:reverse-blockage

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+====== Add Reverse Blockage ======
+Add tap cell not support add to a specified area. As a wrok around, we can block all other area except the blockage.
+The following script is used to create reverse hard blockages.
+<code tcl>
+proc remove_reverse_hard_blockage { } {
+  remove_placement_blockage tap_blockage_*
+}
+proc add_reverse_hard_blockage { llx lly rtx rty } {
+  set core_bbox [ get_attribute [get_core_area] bbox ]
+  set core_llx [ lindex $core_bbox 0 0 ]
+  set core_lly [ lindex $core_bbox 0 1 ]
+  set core_rtx [ lindex $core_bbox 1 0 ]
+  set core_rty [ lindex $core_bbox 1 1 ]
+  create_placement_blockage \
+    -type hard \
+    -name tap_blockage_l  \
+    -bbox "$core_llx $core_lly $llx $core_rty"
+  create_placement_blockage \
+    -type hard \
+    -name tap_blockage_b  \
+    -bbox "$core_llx $core_lly $core_rtx $lly"
+  create_placement_blockage \
+    -type hard \
+    -name tap_blockage_r  \
+    -bbox "$rtx $core_lly $core_rtx $core_rty"
+  create_placement_blockage \
+    -type hard \
+    -name tap_blockage_t  \
+    -bbox "$core_llx $rty $core_rtx $core_rty"
+}
+</code>

vlsi/icc/reverse-blockage.txt · 最后更改: 2011/07/12 04:59 (外部编辑)