Finding the prefix used for caravel subcells in the user GDS.
User prefix is 66_
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_00010003.gds
Cell caravel found at position 2964238396
Cell caravel ends at position 2976248248
Cell caravel checksum is 12009824
Info:  Structure caravel matches checksum 12009824
Info:  Structure caravel at 2964238396 to 2976248248 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 66_user_id_textblock copyright_block 66_copyright_block open_source 66_open_source storage 66_storage sky130_fd_sc_hvl__lsbufhv2lv_1_wrapped 66_sky130_fd_sc_hvl__lsbufhv2lv_1_wrapped user_id_programming 66_user_id_programming simple_por 66_simple_por gpio_control_block 66_gpio_control_block mgmt_core 66_mgmt_core mgmt_protect 66_mgmt_protect chip_io 66_chip_io user_project_wrapper 66_user_project_wrapper ./gds/caravel_00010003_b.gds -debug -verbatim
Original data length = 2976248970
Replaced b'open_source\x00' with b'66_open_source'
Replaced b'user_id_textblock\x00' with b'66_user_id_textblock'
Replaced b'copyright_block\x00' with b'66_copyright_block'
Replaced b'storage\x00' with b'66_storage'
Replaced b'sky130_fd_sc_hvl__lsbufhv2lv_1_wrapped' with b'66_sky130_fd_sc_hvl__lsbufhv2lv_1_wrapped\x00'
Replaced b'user_id_programming\x00' with b'66_user_id_programming'
Replaced b'simple_por' with b'66_simple_por\x00'
Replaced b'gpio_control_block' with b'66_gpio_control_block\x00'
Replaced b'gpio_control_block' with b'66_gpio_control_block\x00'
Replaced b'mgmt_core\x00' with b'66_mgmt_core'
Replaced b'gpio_control_block' with b'66_gpio_control_block\x00'
Replaced b'gpio_control_block' with b'66_gpio_control_block\x00'
Replaced b'mgmt_protect' with b'66_mgmt_protect\x00'
Replaced b'gpio_control_block' with b'66_gpio_control_block\x00'
Replaced b'gpio_control_block' with b'66_gpio_control_block\x00'
Replaced b'gpio_control_block' with b'66_gpio_control_block\x00'
Replaced b'gpio_control_block' with b'66_gpio_control_block\x00'
Replaced b'gpio_control_block' with b'66_gpio_control_block\x00'
Replaced b'gpio_control_block' with b'66_gpio_control_block\x00'
Replaced b'gpio_control_block' with b'66_gpio_control_block\x00'
Replaced b'gpio_control_block' with b'66_gpio_control_block\x00'
Replaced b'gpio_control_block' with b'66_gpio_control_block\x00'
Replaced b'gpio_control_block' with b'66_gpio_control_block\x00'
Replaced b'gpio_control_block' with b'66_gpio_control_block\x00'
Replaced b'gpio_control_block' with b'66_gpio_control_block\x00'
Replaced b'gpio_control_block' with b'66_gpio_control_block\x00'
Replaced b'gpio_control_block' with b'66_gpio_control_block\x00'
Replaced b'gpio_control_block' with b'66_gpio_control_block\x00'
Replaced b'gpio_control_block' with b'66_gpio_control_block\x00'
Replaced b'gpio_control_block' with b'66_gpio_control_block\x00'
Replaced b'gpio_control_block' with b'66_gpio_control_block\x00'
Replaced b'gpio_control_block' with b'66_gpio_control_block\x00'
Replaced b'gpio_control_block' with b'66_gpio_control_block\x00'
Replaced b'gpio_control_block' with b'66_gpio_control_block\x00'
Replaced b'gpio_control_block' with b'66_gpio_control_block\x00'
Replaced b'gpio_control_block' with b'66_gpio_control_block\x00'
Replaced b'gpio_control_block' with b'66_gpio_control_block\x00'
Replaced b'gpio_control_block' with b'66_gpio_control_block\x00'
Replaced b'gpio_control_block' with b'66_gpio_control_block\x00'
Replaced b'gpio_control_block' with b'66_gpio_control_block\x00'
Replaced b'gpio_control_block' with b'66_gpio_control_block\x00'
Replaced b'gpio_control_block' with b'66_gpio_control_block\x00'
Replaced b'gpio_control_block' with b'66_gpio_control_block\x00'
Replaced b'gpio_control_block' with b'66_gpio_control_block\x00'
Replaced b'gpio_control_block' with b'66_gpio_control_block\x00'
Replaced b'gpio_control_block' with b'66_gpio_control_block\x00'
Replaced b'gpio_control_block' with b'66_gpio_control_block\x00'
Replaced b'chip_io\x00' with b'66_chip_io'
Replaced b'user_project_wrapper' with b'66_user_project_wrapper\x00'
Finished.