Finding the prefix used for caravel subcells in the user GDS.
User prefix is 5Q_
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_0001000e.gds
Cell caravel found at position 2930911966
Cell caravel ends at position 2942921818
Cell caravel checksum is 12009824
Info:  Structure caravel matches checksum 12009824
Info:  Structure caravel at 2930911966 to 2942921818 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 5Q_user_id_textblock copyright_block 5Q_copyright_block open_source 5Q_open_source storage 5Q_storage sky130_fd_sc_hvl__lsbufhv2lv_1_wrapped 5Q_sky130_fd_sc_hvl__lsbufhv2lv_1_wrapped user_id_programming 5Q_user_id_programming simple_por 5Q_simple_por gpio_control_block 5Q_gpio_control_block mgmt_core 5Q_mgmt_core mgmt_protect 5Q_mgmt_protect chip_io 5Q_chip_io user_project_wrapper 5Q_user_project_wrapper ./gds/caravel_0001000e_b.gds -debug -verbatim
Original data length = 2942922540
Replaced b'open_source\x00' with b'5Q_open_source'
Replaced b'user_id_textblock\x00' with b'5Q_user_id_textblock'
Replaced b'copyright_block\x00' with b'5Q_copyright_block'
Replaced b'storage\x00' with b'5Q_storage'
Replaced b'sky130_fd_sc_hvl__lsbufhv2lv_1_wrapped' with b'5Q_sky130_fd_sc_hvl__lsbufhv2lv_1_wrapped\x00'
Replaced b'user_id_programming\x00' with b'5Q_user_id_programming'
Replaced b'simple_por' with b'5Q_simple_por\x00'
Replaced b'gpio_control_block' with b'5Q_gpio_control_block\x00'
Replaced b'gpio_control_block' with b'5Q_gpio_control_block\x00'
Replaced b'mgmt_core\x00' with b'5Q_mgmt_core'
Replaced b'gpio_control_block' with b'5Q_gpio_control_block\x00'
Replaced b'gpio_control_block' with b'5Q_gpio_control_block\x00'
Replaced b'mgmt_protect' with b'5Q_mgmt_protect\x00'
Replaced b'gpio_control_block' with b'5Q_gpio_control_block\x00'
Replaced b'gpio_control_block' with b'5Q_gpio_control_block\x00'
Replaced b'gpio_control_block' with b'5Q_gpio_control_block\x00'
Replaced b'gpio_control_block' with b'5Q_gpio_control_block\x00'
Replaced b'gpio_control_block' with b'5Q_gpio_control_block\x00'
Replaced b'gpio_control_block' with b'5Q_gpio_control_block\x00'
Replaced b'gpio_control_block' with b'5Q_gpio_control_block\x00'
Replaced b'gpio_control_block' with b'5Q_gpio_control_block\x00'
Replaced b'gpio_control_block' with b'5Q_gpio_control_block\x00'
Replaced b'gpio_control_block' with b'5Q_gpio_control_block\x00'
Replaced b'gpio_control_block' with b'5Q_gpio_control_block\x00'
Replaced b'gpio_control_block' with b'5Q_gpio_control_block\x00'
Replaced b'gpio_control_block' with b'5Q_gpio_control_block\x00'
Replaced b'gpio_control_block' with b'5Q_gpio_control_block\x00'
Replaced b'gpio_control_block' with b'5Q_gpio_control_block\x00'
Replaced b'gpio_control_block' with b'5Q_gpio_control_block\x00'
Replaced b'gpio_control_block' with b'5Q_gpio_control_block\x00'
Replaced b'gpio_control_block' with b'5Q_gpio_control_block\x00'
Replaced b'gpio_control_block' with b'5Q_gpio_control_block\x00'
Replaced b'gpio_control_block' with b'5Q_gpio_control_block\x00'
Replaced b'gpio_control_block' with b'5Q_gpio_control_block\x00'
Replaced b'gpio_control_block' with b'5Q_gpio_control_block\x00'
Replaced b'gpio_control_block' with b'5Q_gpio_control_block\x00'
Replaced b'gpio_control_block' with b'5Q_gpio_control_block\x00'
Replaced b'gpio_control_block' with b'5Q_gpio_control_block\x00'
Replaced b'gpio_control_block' with b'5Q_gpio_control_block\x00'
Replaced b'gpio_control_block' with b'5Q_gpio_control_block\x00'
Replaced b'gpio_control_block' with b'5Q_gpio_control_block\x00'
Replaced b'gpio_control_block' with b'5Q_gpio_control_block\x00'
Replaced b'gpio_control_block' with b'5Q_gpio_control_block\x00'
Replaced b'gpio_control_block' with b'5Q_gpio_control_block\x00'
Replaced b'gpio_control_block' with b'5Q_gpio_control_block\x00'
Replaced b'gpio_control_block' with b'5Q_gpio_control_block\x00'
Replaced b'gpio_control_block' with b'5Q_gpio_control_block\x00'
Replaced b'chip_io\x00' with b'5Q_chip_io'
Replaced b'user_project_wrapper' with b'5Q_user_project_wrapper\x00'
Finished.