Finding the prefix used for caravel subcells in the user GDS.
User prefix is E7_
Replacing cell caravel in the user GDS file.
Reading GDS file for alternate cell caravel
Cell caravel found at position 235669746
Cell caravel ends at position 247680056
Reading GDS file for original source ./gds/caravel_00010022.gds
Cell caravel found at position 2418870732
Cell caravel ends at position 2430880584
Cell caravel checksum is 12009824
Info:  Structure caravel matches checksum 12009824
Info:  Structure caravel at 2418870732 to 2430880584 will be replaced by alternate data.
Prefixing caravel subcells in the user GDS
Running:  /usr/share/pdk/bin/change_gds_string.py user_id_textblock E7_user_id_textblock copyright_block E7_copyright_block open_source E7_open_source storage E7_storage sky130_fd_sc_hvl__lsbufhv2lv_1_wrapped E7_sky130_fd_sc_hvl__lsbufhv2lv_1_wrapped user_id_programming E7_user_id_programming simple_por E7_simple_por gpio_control_block E7_gpio_control_block mgmt_core E7_mgmt_core mgmt_protect E7_mgmt_protect chip_io E7_chip_io user_project_wrapper E7_user_project_wrapper ./gds/caravel_00010022_b.gds -debug -verbatim
Original data length = 2430881306
Replaced b'open_source\x00' with b'E7_open_source'
Replaced b'user_id_textblock\x00' with b'E7_user_id_textblock'
Replaced b'copyright_block\x00' with b'E7_copyright_block'
Replaced b'storage\x00' with b'E7_storage'
Replaced b'sky130_fd_sc_hvl__lsbufhv2lv_1_wrapped' with b'E7_sky130_fd_sc_hvl__lsbufhv2lv_1_wrapped\x00'
Replaced b'user_id_programming\x00' with b'E7_user_id_programming'
Replaced b'simple_por' with b'E7_simple_por\x00'
Replaced b'gpio_control_block' with b'E7_gpio_control_block\x00'
Replaced b'gpio_control_block' with b'E7_gpio_control_block\x00'
Replaced b'mgmt_core\x00' with b'E7_mgmt_core'
Replaced b'gpio_control_block' with b'E7_gpio_control_block\x00'
Replaced b'gpio_control_block' with b'E7_gpio_control_block\x00'
Replaced b'mgmt_protect' with b'E7_mgmt_protect\x00'
Replaced b'gpio_control_block' with b'E7_gpio_control_block\x00'
Replaced b'gpio_control_block' with b'E7_gpio_control_block\x00'
Replaced b'gpio_control_block' with b'E7_gpio_control_block\x00'
Replaced b'gpio_control_block' with b'E7_gpio_control_block\x00'
Replaced b'gpio_control_block' with b'E7_gpio_control_block\x00'
Replaced b'gpio_control_block' with b'E7_gpio_control_block\x00'
Replaced b'gpio_control_block' with b'E7_gpio_control_block\x00'
Replaced b'gpio_control_block' with b'E7_gpio_control_block\x00'
Replaced b'gpio_control_block' with b'E7_gpio_control_block\x00'
Replaced b'gpio_control_block' with b'E7_gpio_control_block\x00'
Replaced b'gpio_control_block' with b'E7_gpio_control_block\x00'
Replaced b'gpio_control_block' with b'E7_gpio_control_block\x00'
Replaced b'gpio_control_block' with b'E7_gpio_control_block\x00'
Replaced b'gpio_control_block' with b'E7_gpio_control_block\x00'
Replaced b'gpio_control_block' with b'E7_gpio_control_block\x00'
Replaced b'gpio_control_block' with b'E7_gpio_control_block\x00'
Replaced b'gpio_control_block' with b'E7_gpio_control_block\x00'
Replaced b'gpio_control_block' with b'E7_gpio_control_block\x00'
Replaced b'gpio_control_block' with b'E7_gpio_control_block\x00'
Replaced b'gpio_control_block' with b'E7_gpio_control_block\x00'
Replaced b'gpio_control_block' with b'E7_gpio_control_block\x00'
Replaced b'gpio_control_block' with b'E7_gpio_control_block\x00'
Replaced b'gpio_control_block' with b'E7_gpio_control_block\x00'
Replaced b'gpio_control_block' with b'E7_gpio_control_block\x00'
Replaced b'gpio_control_block' with b'E7_gpio_control_block\x00'
Replaced b'gpio_control_block' with b'E7_gpio_control_block\x00'
Replaced b'gpio_control_block' with b'E7_gpio_control_block\x00'
Replaced b'gpio_control_block' with b'E7_gpio_control_block\x00'
Replaced b'gpio_control_block' with b'E7_gpio_control_block\x00'
Replaced b'gpio_control_block' with b'E7_gpio_control_block\x00'
Replaced b'gpio_control_block' with b'E7_gpio_control_block\x00'
Replaced b'gpio_control_block' with b'E7_gpio_control_block\x00'
Replaced b'gpio_control_block' with b'E7_gpio_control_block\x00'
Replaced b'gpio_control_block' with b'E7_gpio_control_block\x00'
Replaced b'chip_io\x00' with b'E7_chip_io'
Replaced b'user_project_wrapper' with b'E7_user_project_wrapper\x00'
Finished.